FOR YOUR SAFETY
If you smell gas:
1. Open windows.
®
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Leave the building.
Combat
Cabinet Heaters
6. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier’s
instructions.
7. If you cannot reach your gas
supplier, call the Fire Department.
Installation, Commissioning,
Operation & Service Manual
WARNING
OIL-FIRED:
Model POP-ECA
015 to 0100
Fire Hazard
GAS-FIRED:
Model PGP-ECA
015 to 0100
Do not store or use petrol or other
flammable vapours and liquids in the
vicinity of this or any other appliance.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
damage.
Installer
WARNING
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or property
damage. Read the installation, operation and service
manual thoroughly before installing or servicing
this equipment.
Owner
Keep this manual in a safe place in order to provide
your serviceman with necessary information.
Installation must be done by a registered installer/
contractor qualified in the installation and service of
gas/oil-fired heating equipment or your fuel supplier.
Roberts-Gordon Europe Limited
Unit A, Kings Hill Business Park
Darlaston Road, Wednesbury
West Midlands,WS10 7SH UK
Telephone: +44 (0)121 506 7700
Fax: +44 (0)121 506 7701
Service Telephone: +44 (0)121 506 7709
Service Fax: +44 (0)121 506 7702
E-mail: [email protected]
Quality in Any Language™
© Copyright 2008 Roberts-Gordon LLC
P/N X523 Rev G 10/08
E-mail: [email protected]
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TABLE OF CONTENTS
SECTION 1: Heater Safety......................................................2
SECTION 2: Installer Responsibility .....................................2
2.1 Clearances to Combustibles........................................2
2.2 Corrosive Chemicals....................................................2
2.3 National Standards and Applicable Codes ..................2
SECTION 3: Critical Considerations .....................................3
3.1 Basic Information.........................................................3
3.2 Location and Suspension ............................................3
3.3 Minimum Required Installation Clearances .................3
3.4 Clearances to Combustibles........................................3
9.11 CCH Wiring Diagram Gas Models 60-100
(floor standing) .........................................................28
9.12 CCH Wiring Diagram Oil Models 60-100
(floor standing) .........................................................29
9.13 CCH Wiring Diagram Gas Models 60-100
(horizontal mounting) ...............................................30
9.14 CCH Wiring Diagram Oil Models 60-100
(horizontal mounting) ...............................................31
9.15 Final Connections to Ecoflam HIGH/LOW or
Modulating Burners (all models) ..............................32
3.5 Ventilation ....................................................................3 SECTION 10: Commissioning ..............................................33
3.6 Fuel Supply..................................................................3
3.7 Electrical Supply..........................................................3
3.8 Flue..............................................................................3
SECTION 4: Specifications ....................................................5
4.1 PGP & POP Internal Heaters.......................................5
4.2 PGP & POP External Heaters .....................................6
4.3 Air Outlet and Flue Arrangements ...............................7
4.4 General Technical Data Table (all models)
10.1 Pre-Commission Checks..........................................33
10.2 Commissioning the Burner (gas heaters).................34
10.3 Control - Gas-Fired Heaters .....................................35
10.4 Gas Valves ...............................................................37
10.5 Combustion Testing (all models) ..............................37
10.6 Commissioning the Burner (Oil Heaters)..................38
10.7 Control - Oil-Fired Heaters .......................................38
10.8 Turning Off the Heater (all models) ..........................39
10.9 External Controls......................................................39
10.10 Instruction to the User ............................................39
Appliance Category II 2H/L 3B/P .......................................8
4.5 Technical Data - Ecoflam ON/OFF Burners
(all models - burner reference "C")..............................8 SECTION 11: User Instructions............................................40
4.6 Technical Data - Ecoflam Modulating Burners
(all models - burner reference "H")..............................9
4.7 Technical Data - Ecoflam Oil-Fired Burners
11.1 User Instructions.......................................................40
11.2 Common User Controls (all models).........................40
11.3 Lighting Instructions (all models) ..............................41
11.4 Simple Fault Finding (all models)..............................41
(burner reference "G") ............................................... 10
SECTION 5: Heater Installation............................................ 11 SECTION 12: Servicing.........................................................43
5.1 General...................................................................... 11
5.2 Handling .................................................................... 11
SECTION 6: Flue Installation ............................................... 13
6.1 Flue Installation.......................................................... 13
SECTION 7: Air Supply......................................................... 15
12.1 Servicing Instructions...............................................43
12.2 Burner Maintenance.................................................43
12.3 Fan/Motor Assembly Maintenance (all models) .......43
12.4 Heat Exchanger Maintenance..................................43
12.5 Thermal Insulation ...................................................43
7.1 Air Supply................................................................... 15 SECTION 13: Conversion Between FUELS.........................44
7.2 Isolated Equipment Rooms ........................................ 15
13.1 General ....................................................................44
7.3 Building Ventilation..................................................... 15
13.2 Burner Conversion ...................................................44
7.4 Distribution Ducting .................................................... 15 SECTION 14: Troubleshooting .............................................45
7.5 Return Air Ducting...................................................... 15
SECTION 8: Fuel Piping........................................................ 16
8.1 Connections............................................................... 16
8.2 Fuel Oil Supply .......................................................... 17
SECTION 9: Wiring and Electrical Information................... 19
9.1 Electrical Supply........................................................ 19
9.2 Remote Controls........................................................ 19
9.3 CCH Wiring Diagram Gas Models 15-30
14.1 General ....................................................................45
14.2 Troubleshooting for Oil Burners
(see manufacture’s instructions) ..............................46
14.3 Troubleshooting for Gas Burners
(see manufacturer’s instructions).............................47
14.4 Troubleshooting for Flame Supervision System .......48
14.5 Troubleshooting for Solenoid Valves Circuit .............49
14.6 Troubleshooting for Main Fan Circuit (1 Ø)...............49
14.7 Troubleshooting for Main Fan (3 Ø)..........................50
SECTION 15: Removal and Replacement Parts..................51
15.1 Burner Components ..............................................51
15.2 Direct On-Line Main Fan Starter and
(floor standing)...........................................................20
9.4 CCH Wiring Diagram Oil Models 15-30
(floor standing)...........................................................21
9.5 CCH Wiring Diagram Gas Models 15-30
(horizontal mounting).................................................22
9.6 CCH Wiring Diagram Oil Models 15-30
Thermal Overload Unit (3 Ø) ...................................51
15.3 Control Circuit Fuse
(horizontal mounting).................................................23
9.7 CCH Wiring Diagram Gas Models 40-50
(floor standing)...........................................................24
9.8 CCH Wiring Diagram Oil Models 40-50
(10 or 5 A, 1-1/4" long sand filled)............................51
15.4 Combination Fan/Limit Thermostat..........................51
15.5 Main Fan Motor (3 Ø Belt Drive) ..............................51
15.6 Main Fan Units.........................................................51
(floor standing)...........................................................25 SECTION 16: Parts List.........................................................53
9.9 CCH Wiring Diagram Gas Models 40-50
16.1 Spare Parts List........................................................53
(horizontal mounting).................................................26
9.10 CCH Wiring Diagram Oil Models 40-50
(horizontal mounting) ...............................................27
Roberts-Gordon LLC
© 2008
All rights reserved. No part of this work covered by the copyrights herein may be reproduced
or copied in any form or by any means - graphic, electronic, or mechanical, including
photocopying, recording, taping or information storage and retrieval systems - without the
written permission of Roberts-Gordon LLC.
Printed in U.K.
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TABLE OF FIGURES
Figure 1: Installation Clearances and Clearances to
Combustibles.............................................................4
Figure 2: Typical Installation of a Gas Fired Cabinet Heater... 11
Figure 3: Typical Installation of a Oil-Fired Cabinet Heater..... 12
Figure 4: Flue Termination ...................................................... 13
Figure 5: Offset Flues with 135° bends ................................... 13
Figure 6: Guy Wire.................................................................. 14
Figure 7: Socket Direction....................................................... 14
Figure 8: Flue and Roof Detail ................................................ 14
Figure 9: Flue and Heater Spigot Joint Detail ......................... 14
Figure 10: Gas Connection ..................................................... 16
Figure 11: B. M. Oil Lifter......................................................... 17
Figure 12: Pressurised System Installation - Duplex System .. 18
Figure 13: Combination Thermostat (all models)....................34
Figure 14: Gas-Fired Heater Control Box Sequence...............35
Figure 15: Motor Starter (models 040 -100 and Thermal
Overload (models 060 - 100) .................................36
Figure 16: Gas Train Circuit for Dungs Gas Valves
(all models) ............................................................36
Figure 17: Dungs Gas Valve ...................................................37
Figure 18: Oil-Fired Heaters Control Box Sequence ...............38
Figure 19: Heater Operating Sequence ..................................40
Figure 20: Fan/Limit Thermostat.............................................40
Figure 21: Belt Tension ...........................................................43
Figure 22: Combination Fan/Limit Thermostat........................52
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Product Approval
ROBERTS GORDON® appliances have been tested and CE certified as complying with the essential
requirements of the Gas Appliance Directive, the Low Voltage Directive, the Electromagnetic
Compatibility Directive and the Machinery Directive for use with natural gas and LPG when installed,
commissioned and maintained in accordance with these instructions.
These instructions refer to gas appliances designed to operate in the European Union.
Appliances designed for other countries (Non-European Union) are available on request.
Oil-fired versions are constructed to the same basic design criteria to burn fuel oil as specified below,
but no similar testing is available for these products at the time of writing. Oil-fired appliances should be
operated in accordance with local rules and laws.
Oil heaters are supplied as standard for use with Gas Oil, also known as 35-second Oil, Red Diesel,
Class D or Class A2. They are also available to order for Kerosine, also known as 28-second Oil or
Class C2.
These appliances must be installed in accordance with the local and national codes in force and used
only in a sufficiently ventilated space, as specified in these instructions.
Before installation, check that the local gas distribution systems, nature of gas and pressure, and
adjustment of the appliance are compatible.
1
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
SECTION 1: HEATER SAFETY
Your Safety Is Important to Us!
This symbol is used throughout the
clearances to combustibles. Affix the tag on a wall
near the heater.
manual to notify you of possible fire,
electrical or burn hazards. Please pay
special attention when reading and
2.2 Corrosive Chemicals
following the warnings in these sections.
Installation, Service and Annual Inspection of heater
must be done by a registered installer/contractor
qualified in the installation and service of gas/oil-
fired heating equipment.
CAUTION
Do not use heater in an area containing corrosive
chemicals.
Corrosive chemicals will damage the burner and
heat exchanger parts.
Read this manual carefully before installation,
operation, or service of this equipment.
Burner manufacturers manual is also provided to
give detailed instructions on the operation of the
burner. The settings for use of the burner with the
heater are shown in these instructions.
Failure to follow these instructions can result in
property damage.
Roberts-Gordon cannot be responsible for ensuring
that all appropriate safety measures are undertaken
prior to installation; this is entirely the responsibility
of the installer. It is essential that the contractor, the
sub-contractor or the owner identifies the presence
This heater is designed for heating non-residential
indoor spaces. Do not install in residential spaces.
These instructions, the layout drawing, local codes
and ordinances, and applicable standards that apply of combustible materials, corrosive chemicals or
to gas piping, electrical wiring, venting, etc., must be halogenated hydrocarbons* anywhere on the
thoroughly understood before proceeding with the
installation.
premises.
* Halogenated Hydrocarbons are a family of chemical
compounds characterized by the presence of halogen
elements (fluorine, chlorine, bromine, etc.). These com-
pounds are frequently used in refrigerants, cleaning
agents, solvents, etc. If these compounds enter the air
supply of the burner, the lifespan of the heater compo-
nents will be greatly reduced. Warranty will be invalid if
the heater is exposed to halogenated hydrocarbons.
SECTION 2: INSTALLER RESPONSIBILITY
• To install the heater, as well as the fuel and
electrical supplies, in accordance with applicable
specifications and codes. Roberts-Gordon
recommends the installer contact a local
building inspector, Fire Officer or insurance
company for guidance.
• To use the information given in this manual
together with the local and national codes to
perform the installation.
• To install the heater in accordance with the
Clearances to Combustibles of this heater.
• To furnish all needed materials not furnished
as standard equipment.
• To plan location of supports, flues and air
intakes.
• To provide access to burners for servicing.
• To provide the owner with a copy of this
installation, commissioning, operation and
service manual.
• To never use heater as support for ladder or
other access equipment and never hang or
suspend anything from heater.
2.3 National Standards and Applicable Codes
All appliances must be installed in accordance with
the latest revision of applicable standards and local
and national codes. This refers also to the electric,
gas and venting installation. NOTE: Additional
standards for installations in Public Garages, Aircraft
Hangars, etc. may be applicable.
The main relevant regulations for installation within
the UK are:
• Gas safety (installation and use) regulations,
1984 and amendments - 1996.
• BS6230 - Specification for the installation of gas
fired forced convection air heaters for commer-
cial and industrial space heating of rated input
exceeding 60kW. (This standard also applies to
oil-fired heaters, except for the fuel supply).
• BS6230 - Parts 2 & 3, fire precautions in the
design and construction of buildings.
• BS6891 - Low pressure installation pipes.
• BS5410 - Codes of practice for oil firing. Part 2
installation of 44 kW and above output capacity
for space heaters, hot water and steam supply
purposes.
• To ensure that there is sufficient ventilation in the
area to comply with the requirements of
all relevant local and national codes.
• Institute of Gas Engineers document IGE/UP/2.
• Building regulations.
• IEE regulations.
• Health and safety at work acts.
• Requirements of local authority, fire officer and
insurance company.
2.1 Clearances to Combustibles
In all situations, clearances to combustibles must be
maintained. Caution must be used when running the
heater near combustible materials such as wood,
paper, rubber, etc. A wall tag is on the back cover of
this manual as a permanent reminder of the safety
instructions and the importance of the required
2
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SECTION 3: CRITICAL CONSIDERATIONS
SECTION 3: CRITICAL CONSIDERATIONS
3.1 Basic Information
3.7 Electrical Supply
Cabinet heaters are supplied with burners suitable
for on/off operation as standard. As an option, oil-
A permanent 230 V, 50 Hz, 1 Ø is required on
models 15 to 30 and 400 V, 50 Hz, 3 Ø and neutral
fired burners are available with two-stage operation required on models 40 to 100 (special version PGP
and gas-fired burners are available with full
modulation.
and POP 040 and 050 models are available as belt
drive). The heater also requires suitable energy
controls in accordance with Section 9.
ON/OFF control, temperature control, time control,
and frost protection are available as a remote
control, which needs to be site wired for proper
operation of the heater. Alternatively, any remote
energy controls may be used which must be wired in
accordance with Section 9.3 through Section 9.10.
3.2 Location and Suspension
All models:
• Are designed to be installed indoors within the
heated space. Special versions are available for
installation outdoors.
• Are designed for floor standing vertical installa-
tion.
• Must be installed in a manner which allows all
the upper panels and either of the lower side
panels to be removed to provide access to all
serviceable components.
• Must be placed on a firm, level, non-combustible
surface that can support its weight. See Page 5,
Section 4.1 for weight details.
3.8 Flue
Choose heater siting to allow for the proper location
of the flue. Each heater must be fitted with an
individual and correctly sized sealed flue system
(See Page 13, Section 6).
Horizontal models:
• Special versions supplied with steel channels to
support the heater are available and may be
mounted horizontally. When installed horizon-
tally, the heater will normally lie on its left side
when viewed from the burner. The same clear-
ances and comments on panels must be used,
except for the side the heater lies on.
3.3 Minimum Required Installation Clearances
Clearances around the heater and flue must be as
indicated on Page 4, Figure 1 and Page 13, Figure 4
through Figure 5 to ensure access for servicing, and
correct operation.
3.4 Clearances to Combustibles
Clearances must be as indicated on Page 4, Figure
1. If no clearances to combustibles are indicated,
then installation clearances apply.
3.5 Ventilation
It is important to ensure adequate air circulation
around the heater to supply air for combustion,
ventilation and distribution in accordance with local
and national codes.
3.6 Fuel Supply
It is important that the fuel supply pipe is sized
correctly to provide the inlet pressure as stated on
the heater data plate. The fuel supply pipe and
electrical connections must not support any of the
heater's weight.
3
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
WARNING
Fire Hazard
Some objects will catch fire or explode when
placed close to heater.
Keep all flammable objects, liquids and
vapours the required distance away from the
heater.
Failure to follow these instructions can result
in death, injury or property damage.
Figure 1: Installation Clearances and Clearances to Combustibles
.6 m
.6 m
4 m
.6 m
*.6 m
*.6 m
The flue pipe must have clearance from combustibles by 5 cm.
If installed where individuals can come in contact with the pressure relief door or other hot components,
adequate guarding must be provided.
All distances are minimum clearance requirements for service access, air flow and safety.
*A service clearance of 1m is required on one side to allow for fan replacement.
4
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SECTION 4: SPECIFICATIONS
SECTION 4: SPECIFICATIONS
4.1 PGP & POP Internal Heaters
Front View
(all models)
Rear View
(all models)
Side View
Side View
(Models 060 - 0100)
(Models 015 - 050)
D
D
E
C
G
G
G
108
70
38
A
70
38
38
F
B
H
38
38
F
B
38
Dimension Data - PGP & POP Internal Heaters
Model 015/020
030
040
050
060/070/080
0100
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
724
29
857
34
1740
69
1267
50
1988
78
781
31
457
18
648
26
724
29
857
34
1740
69
1267
50
2058
81
781
31
457
18
648
26
857
34
857
34
1930
76
1337
53
2235
88
781
31
560
22
781
31
1016
40
1016
40
1930
76
1496
59
2235
88
940
37
560
22
781
31
1016
40
1676
66
1930
76
2156
85
2235
88
1600
63
560
22
1016
40
1994
79
1930
76
2496
98
2235
88
1918
76
559
22
A
B
C
D
E
Width
Depth, Cabinet Only
Height, Cabinet Only
Depth, Overall
Height, Including Heads
Left/Right Air Inlet Spigot - Depth
Left/Right Air Inlet Spigot - Height
Rear Air Inlet Spigot - Depth
Rear Air Inlet Spigot - Height
Flue Diameter*
F
G
H
J
NA
NA
NA
NA
mm
(in)
mm
(in)
361
14
178
7
361
14
178
7
446
18
178
7
446
18
178
7
229
9
229
9
Weight
kg
200
200
245
270
440
530
NOTES: Horizontal cabinet heaters are designed to lie on their left side as standard.
For vertical models, add 54 mm (2 in) to the right side of the cabinet for the fan/limit thermostat.
For horizontal models, add 54 mm (2 in) to the top of the cabinet for the fan/limit thermostat.
*All heaters must be connected to a suitable flue constructed of single wall stainless steel.
5
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
4.2 PGP & POP External Heaters
Front View
Side View
Rear View
F
D
H
275
G
P
J
50
C
C
L
M
70
38
108
38
A
N
B
38
E
38
K
A
Dimension Data - PGP & POP External Heaters
Model
015/020/030
040
050
060/070/080
0100
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
724
29
857
34
1740
69
1396
55
373
15
840
33
857
34
857
34
1930
76
1498
59
474
19
973
38
857
34
1016
40
1930
76
1657
65
474
19
973
38
1016
40
1676
66
1930
76
2483
98
639
25
1132
45
1016
40
1994
79
1930
76
2800
110
639
25
1132
45
A
B
C
D
E
Width
Depth, Cabinet Only
Height, Cabinet Only
Depth Overall
External Heater Housing
Width Overall
F
mm
(in)
mm
(in)
mm
(in)
476
19
648
26
178
7
476
19
781
31
178
7
610
24
781
31
178
7
1238
49
940
37
229
9
1524
60
940
37
229
9
G
H
J
Air Outlet Spigot - Depth
Air Outlet Spigot - Width
Flue Diameter
mm
(in)
mm
(in)
mm
(in)
mm
(in)
648
26
178
7
457
18
781
31
781
31
178
7
560
22
781
31
781
31
178
7
560
22
940
37
K
L
Rear Return/Fresh Air Inlet - Width
Rear Return/Fresh Air Inlet - Height
Left/Right Return Fresh Air Inlet - Height
Left/Right Return Fresh Air Inlet - Width
Rear of Heater to Air Outlet Spigot*
NA
NA
229
9
560
22
1600
63
96
4
229
9
560
22
1918
76
96
4
M
N
P
mm
(in)
401
16
401
16
426
17
NOTE: *For Models 060-0100, the circular flue spigot is at the front of the heater, with the rectangular air outlet spigot at the rear.
COMBAT® external cabinet heaters are designed to be sited externally, with heat ducted into the building. These models
are fitted with a special metal rain drip cover, and all cabinet joints are silicone sealed to ensure that the heaters are
weatherproof.
6
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SECTION 4: SPECIFICATIONS
4.3 Air Outlet and Flue Arrangements
4.3.1 Vertical and Horizontal Heaters - Free Blowing (top view)
0100
060/070/080
015/020
030
040
050
229
165
165
203
184
284
NOTE: Models 015-020 are fitted with 229 mm (9") diameter discharge heads as standard.
Models 030-0100 are fitted with 356 mm (14") diameter discharge heads as standard.
4.3.2 Vertical and Horizontal Heaters - Air Outlet Spigots (top view)
050
015/020/030
040
060/070/080
K
0100
38
K
38
38
38
38
38
100
368
100
100
343
100
100
L
L
L
L
L
38
38
38
38
38
38
400
38
K
38
K
38
K
432
Outlet Spigot Dimensions
Model
015/020/030
040
050
060/070/080
0100
mm
(in)
mm
(in)
648
26
476
19
781
31
476
19
781
31
610
24
940
37
1238
49
940
37
1524
60
K
L
Spigot width
Spigot Depth
7
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
4.4 General Technical Data Table (all models)
Appliance Category II 2H/L 3B/P
Model
015
020
030
040
050
060
070
080
0100
Electrical Supply*
Main Fan Motor Type
Motor Size
230 V / 50 Hz / 1 Ø
Direct Drive
400 V / 50 Hz / 3 Ø
Belt Drive
2.2
(kW)
0.75
2.2
1.5
4.0
2 A x
2 A x
Motor Pulley
Fan Pulley
(PCD)
NA
2 A x 95 mm
80 mm
106 mm
2 A x
180 mm
10.2
3.5
11044
6500
2 A x
180 mm
2 A x
2 A x
180 mm 180 mm
(PCD)
NA
28
6.3
5097
3000
Start Current
Run Current
Airflow
(Amps)
(Amps)
24
5.3
3398
2000
24
5.3
3398
2000
21
6.2
6796
4000
21
6.2
8495
5000
30
5.1
30
5.1
35
9.6
17330
10200
3
12443
7500
12443
7500
(m /h)
3
Free Blowing
(ft /min)
NOTE: *Models 40 & 50 are available with 230 V 1 Ø electrical supply as an extra cost option.
A permanent uninterrupted electrical supply is required for all models.
When reading the following data tables, ensure that you are using the correct table for the burner and gas valve
installed. The data tables include a burner reference letter that can be found on the heater data plate. Refer to the
burner manufacturer’s instructions and the specific instructions supplement where applicable. The burner settings
shown in the instructions must be used for burner settings.
4.5 Technical Data - Ecoflam ON/OFF Burners (all models - burner reference "C")
Model
Gross Heat Input
Net Heat Input
015
55.5
189.4
50.0
170.6
020
73.3
250.1
66.0
225.2
030
93.2
318.0
84.0
286.6
040
129.9
443.2
117.0
399.2
050
162.0
552.7
146.0
498.2
060
208.0
709.7
187.4
639.4
070
242.0
825.7
218.0
743.8
080
275.2
939.0
248.0
846.2
0100
348.5
1189.1
314.0
1071.4
(kW)
(Btu/h) x (1000)
(kW)
(Btu/h) x (1000)
(kW)
(Btu/h) x (1000)
47.4
161.7
61.2
208.8
78.4
267.5
110.2
376.0
134.5
458.9
177.7
606.3
205.3
700.5
230.4
786.1
293.4
1001.1
Heat Output
Pressure Switch Setting
Flue Static Pressure
Gas Connection
(mbar)
(mbar)
(in)
1.5
4.5
-0.09
4.0
-0.30
6.5
-0.05
5.0
-0.25
6.5
-0.17
1 1/4"
7.5
0.10
7.0
0.45
-0.05
-0.05
3/4"
Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min 17 mbar (6.8 in WG) Max 25 mbar (10 in WG)
Main Burner Gas Pressure
Start Gas Pressure
mbar
mbar
4.0
NA
5.3
187
2.7
NA
7.0
247
4.2
NA
8.9
314
4.8
1.8
12.4
438
7.7
2.8
15.4
546
5.2
0.9
19.8
701
7.1
1.1
23.1
816
9.5
1.7
26.2
928
10.0
3.4
33.2
1175
3
(m /h)
Gas Rate
3
(ft /h)
Start Gas Orifice
Burner Type
(mm dia)
5.0
6.0
7.0
7.0
7.0
AZUR 60 BLU 120 BLU 120 BLU 170 BLU 250R BLU 250
BLU 250 BLU 250S BLU 350
Burner Head
Burner Head Setting
Air Setting
S
0
2.6
S
10
4.2
S
11
6
S
15
2.2
S
14
3.5
S
24
2.9
S
24
3.6
S
24
1.4
S
21
1.6
(mm)
MBDLE
405
NA
MBDLE
407
MBDLE
410
S.I.T. 0 832 051
MBDLE
412
Valve Type Main Gas
Valve Type Start Gas
LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 in WG) Min 25 mbar (10 in WG) Max 45 mbar (18 in WG)
Main Burner Gas Pressure
Start Gas Pressure
mbar
mbar
(m /h)
(kg/h)
4.2
NA
2.1
3.9
3.3
NA
2.8
5.1
4.6
NA
3.5
6.5
4.8
1.6
4.9
9.1
7.5
2.5
6.1
11.3
5.8
0.8
7.8
14.5
7.8
1.0
9.1
16.9
12.0
1.5
10.4
19.2
7.6
3.1
13.1
24.3
3
Gas Rate
Start Gas Orifice
Main Gas Orifice
(mm dia)
(mm dia)
5.0
14.5
6.0
14.5
7.0
14.5
7.0
14.5
7.0
14.5
8.5
10.0
10.0
AZUR
60 AH
BLU
120 AH
BLU
120 AH
BLU
170 AH
BLU
250R AH
BLU
250 AH
BLU
250 AH
BLU
250S AH
BLU
350 AH
Burner Type
Burner Head
Burner Head Setting
Air Setting
S
0
3.0
S
10
4.8
S
13
6.6
S
15
2.6
S
14
4.5
S
24
3.1
S
24
4.2
S
24
1.6
LPG
20
1.8
(mm)
MBDLE
405
NA
MBDLE
407
MBDLE
MBDLE
412
Valve Type Main Gas
Valve Type Start Gas
410
S.I.T. 0 832 051
NOTE: For adjustment of head setting, see Ecoflam Instructions
8
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SECTION 4: SPECIFICATIONS
4.6 Technical Data - Ecoflam Modulating Burners (all models - burner reference "H")
Model
015
020
030
040
050
060
070
080
0100
(kW)
55.5
73.3
93.2
129.9
443.2
117.0
399.2
90.9
310.2
81.9
279.5
110.2
376.0
162.0
552.7
146.0
498.2
113.4
386.9
102.2
348.7
134.5
458.9
94
321
208.0
709.7
187.4
639.4
145.6
496.8
131.2
447.7
177.7
606.3
124
423
242.0
825.7
218.0
743.8
169.4
578.0
152.6
520.7
205.3
700.5
144
491
275.2
939.0
248.0
846.2
192.6
657.2
173.6
592.3
230.4
694.0
161
549
348.5
Maximum Gross Heat Input
Maximum Net Heat Input
Minimum Gross Heat Input
Minimum Net Heat Input
Maximum Heat Output
Minimum Heat Output
(Btu/h) x (1000)
189.4
250.1
318.0
1189.1
(kW)
(Btu/h) x (1000)
(kW)
(Btu/h) x (1000)
(kW)
(Btu/h) x (1000)
(kW)
(Btu/h) x (1000)
50.0
170.6
38.9
132.7
35.0
119.4
47.4
161.7
66.0
225.2
51.3
175.0
46.2
157.6
61.2
208.8
84.0
286.6
65.2
222.5
58.8
200.6
78.4
267.5
314.0
1071.4
244.0
832.5
219.8
750.0
293.4
1001.1
205
699
(kW)
(Btu/h) x (1000)
33
113
43
147
55
188
77
263
Pressure Switch Setting
Flue Static Pressure
Gas Connection
(mbar)
(mbar)
(in)
1.5
-0.05
1.0
-0.30
1.5
-0.25
2.0
0.10
2.5
0.45
-0.05
-0.09
-0.05
-0.17
1 1/4"
3/4"
Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min 17 mbar (6.8 in WG) Max 25 mbar (10 in WG)
Main Burner Gas Pressure
Min. Burner Gas Pressure
Start Gas Pressure
(mbar)
(mbar)
(mbar)
4.9
3.2
NA
5.3
187
2.4
2.8
NA
7.0
247
3.3
2.4
NA
8.9
314
4.1
2.3
1.1
12.4
438
6.7
3.7
1.8
15.4
544
5.2
2.5
0.6
19.8
699
6.7
3.4
0.7
23.1
816
8.0
4.3
0.9
26.2
925
8.6
5.4
1.0
33.2
1172
3
(m /h)
Maximum Gas Rate
Minimum Gas Rate
3
(ft /h)
3
(m /h)
3.8
134
5.0
177
6.3
222
8.8
311
11.0
388
14.2
501
16.5
583
18.7
660
23.7
837
3
(ft /h)
Start Gas Orifice
(mm dia)
NA
NA
NA
7.0
Burner Type
Burner Head
AZUR 60 BLU 120 BLU 120 BLU 170 BLU 250R BLU 250
BLU 250
S
BLU 250 BLU 350
S
0.0
20°
33°
0-1, 5
S
S
S
15.0
S
14
18°
32°
S
S
S
Burner Head Setting
Low Flame Air Orange Cam
High Flame Air Red Cam
Gas Valve Setting
Valve Type Main Gas
Valve Type Start Gas
(mm)
**
**
8.0
13°
40°
0-1
10.0
22°
80°
T.O.
22°
35°
25°
30°
30°
0-1, 4
55°
60°
MBDLE 407
NA
MBDLE 412
S.I.T. 0 832 051
LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 in WG) Min 25 mbar (10 in WG) Max 45 mbar (18 in WG)
Main Burner Gas Pressure
Min. Burner Gas Pressure
Start Gas Pressure
(mbar)
(mbar)
(mbar)
4.3
2.3
NA
2.09
3.87
5.7
2.9
NA
2.76
5.11
4.7
1.4
NA
3.51
6.49
3.1
1.6
1.1
4.89
9.05
5.9
2.0
1.7
6.10
11.29
5.3
2.3
0.6
7.83
14.49
7.2
2.5
0.7
9.11
16.86
9.0
3.2
0.7
10.36
19.18
6.4
2.0
1.5
13.12
24.29
3
(m /h)
Maximum Gas Rate
Minimum Gas Rate
(kg/h)
3
1.46
2.71
1.93
3.58
2.46
4.55
3.42
6.34
4.27
7.90
5.48
10.15
6.38
11.80
7.25
13.42
9.18
17.00
(m /h)
(kg/h)
Start Gas Orifice
Main Gas Orifice
(mm dia)
(mm dia)
NA
8.5
NA
NA
7.0
10.0
14.5
NA
Burner Type
Burner Head
AZUR 60 BLU 120 BLU 120 BLU 170 BLU 250R BLU 250
BLU 250
S
BLU 250 BLU 350
S
0.0
20°
S
8.0
13°
S
S
15.0
S
14
18°
32°
S
S
S
Burner Head Setting
Low Flame Air Orange Cam
High Flame Air Red Cam
Gas Valve Setting
Valve Type Main Gas
Valve Type Start Gas
(mm)
**
**
10.0
22°
80°
T.O.
22°
35°
25°
33°
40°
30°
30°
55°
60°
0-1, 4
0, 3-0, 9
0-1, 1
0-1, 4
0-1, 5
0-0, 85
MBDLE 407
NA
MBDLE 412
S.I.T. 0 832 051
NOTE: The air setting is a guide only. The final setting is subject to combustion testing.
When setting the minimum firing rate, a check must be made following the setting of the burner combustion. The
check is made by running the heater on low fire for a minimum of 15 minutes at the full transport air rate and at typical
ambient conditions. During the test, check that the flue gas temperature does not fall below 125° C. Should the flue
gas temperature fall below 100° C, then the low fire gas setting must be increased to a value that will achieve 125° C
flue gas temperature; otherwise condensation may form in the heat exchanger and flue, causing rapid corrosion and
short operational life.
NOTE: For adjustment of head setting, see Ecoflam Instructions.
9
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
4.7 Technical Data - Ecoflam Oil-Fired Burners (burner reference "G")
Model
Gross Heat Input
Heat Output
015
55.5
189.4
47.4
161.8
020
73.3
250.1
61.2
208.9
030
93.2
318.0
78.4
267.4
040
129.9
443.2
110.2
375.9
050
162.0
552.7
134.5
458.8
060
208.0
709.7
177.7
606.5
070
242.0
825.7
205.3
700.3
080
275.2
939.0
230.4
786.2
0100
348.5
1189.1
293.4
1001.0
(kW)
(Btu/h) x (1000)
(kW)
(Btu/h) x (1000)
Burner Type
Minor 8
Minor 12
Minor 20
Minor 30
Major 30
Oil Pump Connections
(in)
3/8
Light Fuel Oil (Gas Oil) Data
Nozzle Size
Angle & Type
Make
Head Setting
Air Setting
*US (gal/h)
1.00
1.50
1.75
60S
Danfoss
14
5.5
12.4
180
2.50
3
11.7
170
12.09
2.66
3.50
4.00
5.00
5.00
6.2
13.0
188
25.62
5.63
7.00
60A
Delavan
(mm)
(number)
(Bar)
8
4.2
12.1
175
5.17
1.14
0
8.5
10.3
150
6.82
1.50
(full back)
3.7
11.0
160
19.36
4.26
(fixed)
1.8
11.0
160
32.44
7.14
4
10.0
145
15.08
3.32
4
10.0
145
22.53
4.96
Burner Fuel Pressure
Fuel Consumption
2
(lbf/in )
(L/h)
*UK (gal/h)
8.68
1.91
Maximum Oil Pressure to
Pump Inlet
(Bar)
.21
3
2
(lbf/in )
Kerosene Data
Nozzle Size
Angle & Type
Make
Head Setting
Air Setting
*US (gal/h)
1.25
1.75
2.50
3.00
3
9.7
140
12.81
2.82
4.00
5.00
6.00
4.5
8.3
120
23.87
5.25
6.50
6
9.3
135
27.14
5.97
8.50
60B
60S
Danfoss
(mm)
(number)
(Bar)
8
4
8.6
125
5.47
1.20
0
6.6
9.7
140
7.23
1.59
14
6
8.3
120
9.19
2.02
(full back)
3.7
9.0
130
20.52
4.51
(fixed)
1.4
8.3
120
34.37
7.56
4
8.3
120
15.98
3.51
Burner Fuel Pressure
Fuel Consumption
2
(lbf/in )
(L/h)
*UK (gal/h)
NOTE: For adjustment of head setting, see Ecoflam Instructions.
* Nozzle sizes are quoted in US gal/h. Fuel consumption is quoted in imperial gal/h.
10
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SECTION 5: HEATER INSTALLATION
SECTION 5: HEATER INSTALLATION
5.1 General
should be placed on a firm, level, non-combustible
surface that can support its weight. See Page 5,
Section 4.1 for weight details.
Heaters are designed for floor standing vertical
installation. Special versions supplied with steel
channels to support the heater are available and
may be mounted horizontally. When installed
horizontally, the heater will normally lie on its left
side when viewed from the burner. The heater
5.2 Handling
All cabinet heaters are supplied secured to a
wooden pallet and shrink wrapped. Use the pallet to
support the heater during handling and installation.
Figure 2: Typical Installation of a Gas Fired Cabinet Heater
Flues up to 200 mm dia. are
fitted with Bird Screens, over
200 mm with a Rain Cap.
1 m
Minimum
Lead Roof Plate
Flue
Air
Distribution
Heads
Roof
Building Ventilation
Electric Supply
Gas Isolating Valve
Union
Connection
11
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
Figure 3: Typical Installation of a Oil-Fired Cabinet Heater
Flues up to 200 mm dia. are
fitted with Bird Screens, over
200 mm with a Rain Cap.
1 m
Minimum
Lead Roof Plate
Flue
Air
Distribution
Heads
Roof
Fusible
Link
Gauge
Vent Filler
Building Ventilation
Electric Supply
Fuel
Tank
Fire Valve
Gate Valve
Plugged Drain Valve
Manual Isolating Fuel Filter
Valve
12
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SECTION 6: FLUE INSTALLATION
SECTION 6: FLUE INSTALLATION
6.1 Flue Installation
Figure 6 through Page 14, Figure 9. The joints
between the flue and the roof or wall must be
properly sealed. If the flue passes through a wall or
ceiling of combustible material it must be enclosed
by a sleeve of non-combustible material and be
separated from the sleeve by at least a 25 mm air
gap.
WARNING
Fire Hazard
Some objects will catch fire or explode when
placed close to heater.
Flues must be adequately supported so that the
heater does not bear the weight of the flue.
For straight and offset flue termination See Page 13,
Figure 4 and Figure 5.
Keep all flammable objects, liquids and
vapours the required distance away from the
heater.
90° bends and horizontal pipe must not be used
in flues except for the immediate connection to
horizontally mounted heaters (1 m max). 135°
bends are used to offset the flue as in Figure 5.
If condensation is likely to occur in the flue, then
provision should be made for drainage.
Failure to follow these instructions can result
in death, injury or property damage.
Flues must be correctly sized for the model. See
Page 5, Section 4.1. Flues should be assembled as
on Page 13, Figure 4 and Figure 5 and Page 14,
Figure 4: Flue Termination
Figure 5: Offset Flues with 135° bends
Flues up to 200 mm dia. are fitted
with Bird Screens, over 200 mm
with a Rain Cap.
Minimum Total
1m +
(0.5m for each 135° bend) +
(1m for each 0.33m of flue
running in the 135° direction)
1 m
Minimum
above roof
*1 m
Minimum
1 m
Minimum
Nearby
Structure
Roof
Use adequate
*Less than
2.5 m
support to
prevent heater
from carrying
the weight of
the flue.
Roof
135°
Use adequate
support to
prevent heater
from carrying
the weight of
the flue.
*If the point
of roof
intersection
is within 2.5 m
of a nearby
structure, the
flue must
terminate
at least
1 m above
that structure.
Wall
Wall
13
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
Figure 6: Guy Wire
Figure 8: Flue and Roof Detail
Screws,
four typical.
Over 2 m
use Guy Wires
Roof
Clamp ring
Rain Collar
Roof Plate
Heat Sealed
Flash Band
Wall
Use adequate
support to
Secure Bolts
prevent heater
from carrying
the weight of
the flue.
Stainless Steel
Roof Tidy Plate
Figure 7: Socket Direction
Figure 9: Flue and Heater Spigot Joint Detail
If it is necessary to cut any section of flue, the
cut is made at the bottom of the lowest section
where it connects to the heater.
Masterflash
Soaker Flashing
or Rain Collar.
Male spigot
facing up.
Screws
Tidy
Plate
Fire
Cement
Heat
Resistant
Rope
Heater
Spigot
Metal Sleeve
Conversion Collar -
last joint below
the roof line.
Clamp Ring
14
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SECTION 7: AIR SUPPLY
SECTION 7: AIR SUPPLY
7.1 Air Supply
It is important to ensure adequate air supply at all
times for both combustion and heating requirements
in accordance with BS 6230 for UK installations and
the latest revisions of applicable standards and local
and national codes.
The main fan requires a minimum free air return
path of 1 m2 per 197 kW of heater output or 0.33 m2,
whichever is greater.
NOTE: When heaters are installed in the horizontal
mode and connected to distribution ducting and/or
inlet ducting, then the natural convected air flow
through the heater, before the main fan turns on may
be disrupted.
7.2 Isolated Equipment Rooms
Ventilation must prevent the temperature of isolated
equipment room from exceeding 32°C as well as
prevent any negative air pressure within the room.
Any isolated equipment room containing air heaters
will require permanent air vents direct to outside air
in compliance with local codes.
Where natural ventilation is used, suitable
permanent openings at low and high levels,
communicating directly with the outside air, must be
provided.
To ensure correct operation of the fan under these
circumstances, in all COMBAT® cabinet heaters
designed for horizontal mounting, the main fan will
operate in conjunction with the burner sequence by
the use of a time delay or direct acting relay.
It is strongly recommended that when any heater is
connected to installation ducting, a similar approach
to the fan control is used. Any such control must be
in parallel with the fan thermostat so that the fan
"run on" feature is still able to operate (See Page 22,
Section 9.5).
Where mechanical ventilation is used, extract rate
must be 5% - 10% less than the inlet rate. The
mechanical ventilation must be interlocked with the
burner on the heater.
7.2.1 Heaters Installed Within the Heated Space
Where the volume of the heated space is greater
than 4.7 m3 per kilowatt of total rated heat input and
the air change rate is at least 0.5/h, additional high
and low level ventilation will not be required.
For a building having an air change rate less than
0.5/h, ventilation will be necessary in accordance
with local and national codes.
7.3 Building Ventilation
Where ventilation is required, air must be taken from
an outside point where it is not likely to be
contaminated or obstructed.
7.4 Distribution Ducting
Duct should be full size for at least twice the minor
dimension before change of direction or reduction of
area.
7.5 Return Air Ducting
In installations employing recirculation or fresh air
ducting, this ducting shall comply with the following:
1. There shall be an unobstructed air path con-
nected directly to the heater.
2. The return air or fresh air shall be connected by
ducting directly to the air inlet on the heater.
3. Where automatic or manual dampers are pro-
vided for operational adjustment in these ducts,
they shall be proved in the correct position dur-
ing the operation of the burner.
15
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
SECTION 8: FUEL PIPING
8.1 Connections
Connect the heater to the gas supply, ensuring that
WARNING
the final connections are as follows:
• Gas supply pipe is run in medium or heavy
gauge tubing in compliance with local and
national codes.
• The gas supply pipe is adequately sized to carry
the total volume of gas for the complete
installation.
Fire Hazard
Connect gas supply according to Figure 10.
Gas can leak if not installed properly.
• An isolating valve and union connection should
be used and fitted into the supply adjacent to the
heater.
Failure to follow these instructions can result in
death, injury or property damage.
IMPORTANT - The complete installation must be
purged and tested for gas soundness in accordance
with local and national codes.
It is important that the gas supply pipe and the
electrical connections do not support any of the
heater’s weight.
A gas meter is connected to the service pipe by the
Gas Supply Company. Any existing meter should be
checked, preferably by the company, to ensure that
the meter is adequate for the rate of gas supply
required.
Installation pipes must be fitted in accordance with
local and national codes. Pipe work from the meter
to the heater(s) must be of adequate size. Pipes of
smaller size than the heater inlet gas connection
should not be used.
Figure 10: Gas Connection
Medium or Heavy
Gauge Tubing
Gas Connector
Gas Isolating Valve
Union
Connection
Drip Leg
16
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SECTION 8: FUEL PIPING
8.2 Fuel Oil Supply
8.2.4 B. M. Oil Lifter
8.2.1 Fuel Storage Tank
Where a gravity feed system cannot be used, a B.
M. oil lifter may be used for small installations up to
the equivalent of a single model 050 on minimum lift
or a single model 020 on maximum lift.
The fuel output from the oil lifter is gravity fed.
The B. M. oil lifter requires a constant 230 V 50 Hz
1 Ø electrical supply. The maximum pipe size to be
used on the suction side is 1/4" ID, 5/16" OD (8
mm). For maximum loading of oil lifters See Page 17,
Figure 11. Consult the manufacturer’s information
regarding the need to prime these devices.
The fuel storage tank should be located outside the
building as close as possible to the heater. The tank
must be installed per local and national codes.
8.2.2 Fuel Pipes
The fuel pipes must be sized to ensure an adequate
supply of oil to the entire installation. Galvanised
pipe must not be used for oil installations. The fuel
pipe must terminate at each heater with an isolating
manual valve, a fire valve and a fuel filter. See Page
12, Figure 3. The fusible link of the fire valve should
be installed 100 mm (4 in) above the burner.
The heater’s oil burner pump inlet is provided with a
flexible oil line which should be used for the final
connection. When making the final connection to the
heater, do not block any of the removable panels of
the heater. All COMBAT® oil-fired cabinet heaters are
supplied with burner pumps fitted for one pipe
systems.
8.2.5 Pressurised Systems
See Page 18, Figure 12. For larger installations, a
pressurised system may be used. In this type of
system the pump draws fuel from the tank, then
pushes it through the installation under pressure.
The pressure is controlled at the pump by a
pressure relief valve at approximately 0.8 BAR (12
psi). When a presurised system is used, a pressure
reducing valve set at approximately 0.3 BAR (5 psi)
should be installed on the fuel inlet to each heater
after the manual isolating valve. This protects the oil
pump from the danger of possible over pressure
under fault conditions.
8.2.3 Gravity Feed Systems
The simplest installation is a gravity feed system.
This system relies on the head of the fuel to push
the fuel through the system. See Page 12, Figure 3.
The electrical supply for the pump installation will
depend upon the type of pumps chosen, but will
normally be set to run continuously.
Figure 11: B. M. Oil Lifter
Total Suction Length in Feet
8mm (5/16”) O.D. Copper Tube
6
25
5
4
3
2
1
0
20
15
10
5
33’
65’
99’
132’
165’
240 V
0
Oil Lifter
0
5
10 15 20 25
Lift in Feet
0 1 2 3 4 5 6 7
Lift in Metres
8
Oil
Heater
Air Vent
Technical Data
Filler Pipe
Maximum Lift.............
Maximum Capacity....
Actual Capacity..........
8 m
20 L/h
10 - 20 L/h
Dependant upon vertical lift and suction
line length.
Storage Tank
50 mm
17
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
Figure 12: Pressurised System Installation - Duplex System
Pressure Gauge
Relief Valve
Check
Check
Valve
Valve
Stop
Stop
Valve
Pressure
Reducing
Valve
Valve
No. 1
Pump
No. 2
Pump
For
Fuel Tanks
above
Pump Set
Stop
Valve
Stop
Valve
Burner
Pressure
Reducing
Valve
Duplex Pump Set
Check
Valve
Burner
Storage Tank
Below Ground
(The system shown has one pump for run and the
other for standby. The valves allow the standby pump
to be removed for maintenance while the system is still running).
18
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.1 Electrical Supply
9.2.2 Positioning Room Thermostats or
Roberts-Gordon Control
A 230 V 50 Hz 1 Ø supply is required for all heater
Models 015 to 030 connected to the heater terminals
L1, N and Earth.
A room thermostat or Roberts-Gordon control
should be mounted on a wall or column at a height
of approximately 1.5-1.8 metres from the floor to
measure the ambient temperature. It should be clear
of both cold draughts and the direct path of warm air
from the heater.
Standard models 040 to 0100 and all High Flow
models require a 400 V 50 Hz 3 Ø and neutral
supply connected to the heater terminals L1, L2, L3,
N and Earth.
9.2.3 Remote Frost Thermostat
When required, connect to terminals 2 and 3 in the
main terminal block.
Locate the thermostat within the heated space
adjacent to the most vulnerable equipment that
requires protection.
See Page 20, Section 9.3 through Page 27, Section
9.10.
All heaters and controls must be correctly earthed.
All external wiring must comply with the relevant IEE
and local regulations and be carried out by a
qualified electrician.
It is important that "L and N" polarity is correct for
these heaters, as incorrect polarity may prevent the
burner control box from operating properly. It is also
important that the voltage between N and earth is at
0 V and can never exceed 15 V.
9.2.4 Controls for High/Low Burner Operation
For heaters with a high/low burner, the controls will
need to provide two stage signal to operate these
burners. This is best provided by a two stage
thermostat.
The thermostat may control the heater outlet
temperature if the heater is designed for a duct
distribution system or the room temperature.
The site wiring will be across terminals 2 and 3 for
any time control and the on/off function of the burner
(stage two), and across terminals 7 and 8 for the
high fire (first stage) setting.
An isolator with a contact separation of at least 3
mm on all poles should be installed adjacent to the
heater, but not attached to it, to disconnect all
supplies to the heater and where necessary to
isolate the remote control panel.
The final connection to the heater should be made in
metal sleeved flexible cable or flexible conduit to the
main terminal block under the front lower panel of
the heater using 1 sq. mm cable. Model 0100 and
High Flow models with 5.5kW or 7.5kW motors use
1.5 sq. mm cable. Cable entry is provided into the
rear horizontal frame of the cabinet.
The burner will then operate as follows:
Temp. from cold up to
the 1st set point..................... Full fire at max. rate
Temp. above 1st set point
WARNING
up to 2nd set point.................Low fire at min. rate
Temp. above 2nd set point ...............................Off.
9.2.5 Controls for Fully Modulating Burners
For heaters that incorporate a fully modulating
burner, a special temperature control is provided
with the heater. On-site wiring of the temperature
sensor is required with any time control.
The heater will normally be controlled by the
temperature of the air in the outlet duct, but it is
possible to control on room temperature.
The position of the sensor in the outlet duct is
determined on site. Using a themometer, select a
position in the outlet duct approximately 1 m from
the heater, across the cross section of the duct that
provides a reasonable average of the temperatures
found. Mount the sensor at this position for best
results.
Electrical Shock Hazard
Disconnect electrical power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
9.2 Remote Controls
The heater is designed to be operated by controls
installed remotely from the heater. See Page 20,
Section 9.3. through Page 27, Section 9.10.
When operating at reduced heat input, the leaving
air temperature may be low when controlled on room
temperature.
The time control and any other on/off controls will be
across terminals 2 and 3. The sensor will be
connected to terminals 8 and 9.
9.2.1 Burner Controls (Thermostat)
Controls to operate the burner must be voltage free
contacts connected between terminals 2 & 3 of the
main terminal block.
The operation will occur in the following sequence:
1. The burner will fire. When the burner sequence
reaches the release to modulation stage, the
control will begin to monitor the outlet
temperature.
19
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
2. The control will then adjust the burner input
If a switch is required to turn on the main fan for
continuously to attempt to maintain the
temperature set on the control.
ventilation, this must be voltage free, from external
sources, and may be connected between terminals
L1 & 1 for models 015 to 030 and terminals 2 & 1 for
all other models.
3. If the temperature continues to rise with the
burner operating at minimum fire, the control
will turn off the burner until the temperature falls
again, and the burner will restart.
9.3 CCH Wiring Diagram Gas Models 15-30 (floor standing)
GAS BURNER 7 WAY PLUG
PACKAGED
BURNER
Blue
FAN / LIMIT STAT
Red / White
FAN
LIMIT
Note: Remote fan control
carries full load of fan motor
7 amp inductive
TIME/TEMPERATURE
CONTROLS
4
3
2
Red / White
10 A
Red / White
FAN CONTROL
1
Brown
Red
L
1
L
2
MAIN
FAN
L
230 V 50 Hz
1 PH SUPPLY
3
MOTOR
Blue
N
Blue
1 mm2 Ø Red Tri Rated Flex Cable
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with
the heater must be replaced with
wiring material having a temperature
rating of at least 105°C and 600 V.
20
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.4 CCH Wiring Diagram Oil Models 15-30 (floor standing)
OIL BURNER 6 WAY PLUG
PACKAGED
BURNER
Blue
FAN / LIMIT STAT
Red / White
FAN
LIMIT
Note: Remote fan control
carries full load of fan motor
7 amp inductive
TIME/TEMPERATURE
CONTROLS
4
3
2
Red / White
10 A
Red / White
FAN CONTROL
1
Brown
Red
L
1
L
2
MAIN
FAN
L
230 V 50 Hz
1 PH SUPPLY
3
MOTOR
Blue
N
Blue
1 mm2 Ø Red Tri Rated Flex Cable
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with
the heater must be replaced with
wiring material having a temperature
rating of at least 105°C and 600 V.
21
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
9.5 CCH Wiring Diagram Gas Models 15-30 (horizontal mounting)
GAS BURNER 7-WAY PLUG
FOR GAS BURNER
T1 IS NOT USED
B4 = BURNER RUN TO R1 COIL
ALL OTHER WIRES SAME AS OIL
BURNER
PACKAGED
BURNER
Blue
LOCKOUT SIGNAL
R1 COIL 240v
LOCKOUT RESET SIGNAL
OUTPUTS
FROM
BURNER
7
2
BURNER RUN SIGNAL
1
3
Red / White
8
7
6
REMOTE LOCKOUT
RESET
N
5
FOR BURNERS WITH
LANDIS & STEFA
CONTROL BOX
(GAS-FIRED)
REMOTE LOCKOUT
LAMP 230V
FAN / LIMIT STAT
Red / White
LIMIT
FAN
4
3
2
Red / White
10 A
TIME/TEMPERATURE
CONTROLS
Red / White
1
FAN CONTROL
(OPTIONAL)
Brown
L
1
Red
1 mm2 Ø RED TRI RATED FLEX CABLE
L
2
3
MAIN FAN
MOTOR
230 V 50 Hz
1 PH SUPPLY
L
Blue
N
Blue
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with
the heater must be replaced with
wiring material having a temperature
rating of at least 105°C and 600 V.
22
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.6 CCH Wiring Diagram Oil Models 15-30 (horizontal mounting)
OIL BURNER 6-WAY PLUG
PACKAGED
BURNER
Red / White
Blue
BURNER RUN SIGNAL
R1 COIL 240v
LOCKOUT RESET SIGNAL
OUTPUTS
FROM
BURNER
7
2
LOCKOUT SIGNAL
1
3
8
7
6
REMOTE LOCKOUT
RESET
N
5
REMOTE LOCKOUT
LAMP 230V
FOR BURNERS WITH
SATRONIC CONTROL BOX
(OIL-FIRED)
FAN / LIMIT STAT
Red / White
LIMIT
FAN
4
3
Red / White
10 A
TIME/TEMPERATURE
CONTROLS
Red / White
2
1
FAN CONTROL
Brown
(OPTIONAL)
L
Red
1
1 mm2 Ø RED TRI RATED FLEX CABLE
L
2
MAIN FAN
MOTOR
230 V 50 Hz
1 PH SUPPLY
L
3
Blue
N
Blue
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with
the heater must be replaced with wiring
material having a temperature rating of
at least 105°C and 600 V.
23
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
9.7 CCH Wiring Diagram Gas Models 40-50 (floor standing)
GAS BURNER 7-WAY PLUG
FAN / LIMIT STAT
PACKAGED
BURNER
LIMIT
FAN
TIME/TEMPERATURE
CONTROLS
Red / White
4
3
Red / White
10 A
Red / White
2
1
FAN CONTROL
Red
L
CONTACTOR
1
Red / White
Red
Red
L
2
MAIN
Black
400 V 50 Hz
FAN
3 PH SUPPLY
L
Brown
Red
3
MOTOR
Grey
C1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with
the heater must be replaced with wiring
material having a temperature rating of
at least 105°C and 600 V.
24
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.8 CCH Wiring Diagram Oil Models 40-50 (floor standing)
OIL BURNER 6-WAY PLUG
FAN / LIMIT STAT
PACKAGED
BURNER
LIMIT
FAN
TIME/TEMPERATURE
CONTROLS
Red / White
4
Red / White
3
10 A
Red / White
2
1
FAN CONTROL
Red
L
CONTACTOR
1
Red / White
Red
Red
L
2
MAIN
FAN
Black
400 V 50 Hz
3 PH SUPPLY
L
Brown
Red
3
MOTOR
Grey
C1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with
the heater must be replaced with wiring
material having a temperature rating of
at least 105°C and 600 V.
25
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
9.9 CCH Wiring Diagram Gas Models 40-50 (horizontal mounting)
FOR GAS BURNER
T1 IS NOT USED
B4 = BURNER RUN TO R1 COIL
ALL OTHER WIRES SAME AS OIL
BURNER
GAS BURNER 7-WAY PLUG
PACKAGED
BURNER
LOCKOUT SIGNAL
Red / White
LOCKOUT RESET SIGNAL
BURNER RUN SIGNAL
OUTPUTS
FROM
BURNER
R1 COIL 240v
2
7
3
1
8
7
6
REMOTE LOCKOUT
RESET
N
5
FOR BURNERS WITH
LANDIS & STEFA
CONTROL BOX
(GAS FIRED)
REMOTE LOCKOUT
LAMP 230V
FAN / LIMIT STAT
Red / White
LIMIT
FAN
4
3
2
Red / White
TIME/TEMPERATURE
CONTROLS
Red / White
FAN CONTROL
(OPTIONAL)
10 A
1
Red
L
1
CONTACTOR
Red / White
Red
Red
Red
L
2
MAIN
FAN
400 V 50 Hz
Black
3 PH SUPPLY
L
Brown
Grey
3
MOTOR
R1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with the
heater must be replaced with wiring material
having a temperature rating of at least 105°C
and 600 V.
26
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.10 CCH Wiring Diagram Oil Models 40-50 (horizontal mounting)
OIL BURNER 6-WAY PLUG
PACKAGED
Red / White
BURNER
BURNER RUN SIGNAL
LOCKOUT RESET SIGNAL
OUTPUTS
FROM
BURNER
LOCKOUT SIGNAL
R1 COIL 240v
2
7
3
1
8
7
6
REMOTE LOCKOUT
RESET
FOR BURNERS WITH
SATRONIC CONTROL BOX
(OIL FIRED)
REMOTE LOCKOUT
LAMP 230V
N
5
FAN / LIMIT STAT
Red / White
LIMIT
FAN
4
3
2
Red / White
TIME/TEMPERATURE
CONTROLS
Red / White
FAN CONTROL
(OPTIONAL)
10 A
1
L
Red
CONTACTOR
1
Red / White
Red
Red
Red
L
2
MAIN
FAN
400 V 50 Hz
3 PH SUPPLY
Black
L
Brown
Grey
3
MOTOR
R1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with the
heater must be replaced with wiring material
having a temperature rating of at least 105°C
and 600 V.
27
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
9.11 CCH Wiring Diagram Gas Models 60-100 (floor standing)
GAS BURNER 7-WAY PLUG
FAN / LIMIT STAT
PACKAGED
BURNER
LIMIT
FAN
TIME/TEMPERATURE
Red / White
4
3
CONTROLS
Red / White
10 A
Red / White
2
1
Red
FAN CONTROL
L
1
CONTACTOR
Red / White
Red
Red
L
2
MAIN
400 V 50 Hz
Black
Brown
Grey
FAN
3 PH SUPPLY
L
Red
3
MOTOR
R1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with the
heater must be replaced with wiring material
having a temperature rating of at least 105°C
and 600 V.
28
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.12 CCH Wiring Diagram Oil Models 60-100 (floor standing)
OIL BURNER 6-WAY PLUG
FAN / LIMIT STAT
PACKAGED
BURNER
LIMIT
FAN
TIME/TEMPERATURE
4
CONTROLS
Red / White
Red / White
3
10 A
Red / White
2
1
Red
FAN CONTROL
L
1
CONTACTOR
Red / White
Red
Red
L
2
MAIN
400 V 50 Hz
Black
FAN
3 PH SUPPLY
L
Brown
Red
3
MOTOR
Grey
R1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with the
heater must be replaced with wiring material
having a temperature rating of at least 105°C
and 600 V.
29
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
9.13 CCH Wiring Diagram Gas Models 60-100 (horizontal mounting)
FOR GAS BURNER
T1 IS NOT USED
B4 = BURNER RUN TO R1 COIL
ALL OTHER WIRES SAME AS OIL
BURNER
GAS BURNER 7-WAY PLUG
Red / White
PACKAGED
BURNER
Blue
LOCKOUT SIGNAL
Blue
LOCKOUT RESET SIGNAL
OUTPUTS
FROM
BURNER
Red / White
R1 COIL 240v
BURNER RUN SIGNAL
7
2
Red / White
3
1
8
7
REMOTE LOCKOUT
RESET
6
N
5
FOR BURNERS WITH
REMOTE LOCKOUT
LAMP 230 V
LANDIS & STEFA
CONTROL BOX
(GAS-FIRED)
FAN / LIMIT STAT
Red / White
FAN
LIMIT
4
3
2
Red / White
TIME/TEMPERATURE
CONTROLS
10 A
Red / White
FAN CONTROL
(OPTIONAL)
1
Red
L
1
CONTACTOR
Red / White
Red
Red
Red
L
2
MAIN
400 V 50 Hz
3 PH SUPPLY
Black
FAN
L
Brown
3
MOTOR
Grey
R1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with the
heater must be replaced with wiring material
having a temperature rating of at least 105°C
and 600 V.
30
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SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.14 CCH Wiring Diagram Oil Models 60-100 (horizontal mounting)
OIL BURNER 6-WAY PLUG
Red / White
PACKAGED
BURNER
Blue
BURNER RUN SIGNAL
Red / White
LOCKOUT RESET SIGNAL
OUTPUTS
FROM
BURNER
R1 COIL 240v
Red / White
LOCKOUT SIGNAL
7
2
Red / White
3
1
8
7
6
REMOTE LOCKOUT
RESET
FOR BURNERS WITH
SATRONIC CONTROL BOX
(OIL-FIRED)
REMOTE LOCKOUT
LAMP 230V
N
5
FAN / LIMIT STAT
Red / White
FAN
LIMIT
4
3
2
Red / White
TIME/TEMPERATURE
CONTROLS
10 A
Red / White
FAN CONTROL
(OPTIONAL)
1
Red
L
1
CONTACTOR
Red / White
Red
Red
Red
L
2
MAIN
400 V 50 Hz
3 PH SUPPLY
Black
FAN
L
Brown
3
MOTOR
Grey
R1
Blue
N
Blue
1 mm2 Ø RED TRI RATED FLEX CABLE
MAIN TERMINALS
IN CONTROL PANEL
NOTE:
Any of the original wire supplied with the
heater must be replaced with wiring material
having a temperature rating of at least 105°C
and 600 V.
31
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
9.15 Final Connections to Ecoflam HIGH/LOW or Modulating Burners (all models)
32
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SECTION 10: COMMISSIONING
SECTION 10: COMMISSIONING
Installation, service, commissioning and annual
inspection of the heater must be done by a
contractor qualified in the installation and service of
gas or oil-fired heating equipment. Read this manual
carefully before installation, commissioning,
operation or service of this equipment.
2. Check the correct fuse size is fitted in the local
supply isolator. See Page 8, Section 4.4.
10.1.3 Polarity Test - 1 Ø
L
230v 50Hz AC
V
WARNING
0v
N
V
(must be less than 15v)
Supply
Earth
Terminal
Electrical Shock Hazard
Less Than
0.1 ohm
Use extreme caution while commissioning.
Failure to follow these instructions can result in
death or electrical shock.
ohm
10.1.4 Polarity Test - 3 Ø
10.1 Pre-Commission Checks
Voltage between each phase L1, L2 and L3 and
Earth or Neutral should be approximately 230 V.
Voltage between any 2 phases should be
approximately 400 V. Test Neutral to Earth as single
phase.
All pre-commission checks must be carried out
before lighting the heater.
Ensure that the heater and all controls are suitable
for the fuel, pressure and electrical supply to which
they are to be connected.
10.1.5 Fan Rotation Check
10.1.1 Louvers
Switch on the electricity supply at the isolator and
the manual switch to "fan on" (if no remote fan switch
is installed, press the white button on the fan/limit
thermostat). On 3 Ø heaters, check the rotation of
the main fan. Rotation should be clockwise looking
at the drive end. If rotation is not correct, turn off the
isolator and change over any two of the incoming
supply phases and recheck. It will be necessary to
remove the lower front or right side panel to see fan
rotation.
Where fitted, the air delivery louvers need to be set
during commissioning to give the required air
distribution.
WARNING
10.1.6 Fan Motor Overload Check
On 3 Ø belt drive heaters, check the correct settings
of the fan motor overload. This should be 0.2 A
above the rated current on the heater data plate.
See Page 8, Section 4.4.
Cut Hazard
Turn off fuel and electrical supply before maintenance.
Fan can start automatically at any time.
10.1.7 Mechanical Checks
1. Check that the flue is installed in accordance
with these instructions and local regulations.
Failure to follow these instructions can result in severe
injury or product damage.
2. Check that the settings of the Combination Fan/
Limit thermostat are correct - See Page 34,
Figure 13.
10.1.2 Electrical Checks
All pre-commission checks must be carried out
before commissioning the heater.
1. Check that all site wiring is connected in
accordance with the appropriate wiring dia-
grams on Page 20, Section 9.3 through Page
32, Section 9.15.
33
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
Figure 13: Combination Thermostat (all models)
See Page 34, Section 10.2.5 and repeat until
the burner fires.
Set Point 3
10.2.4 Initial Setting
Limit
1 2 0
Set to 110°C
NOTE: Skip this step for models 015 to 030.
Once firing, the start gas pressure should be set to
the value given in the Data Tables for the burner
type and the model concerned (see the burner
reference letter on data plate). This is carried out by
turning the governor adjusting screw (accessed
under the black push-on cover) clockwise to
increase pressure, or counter clockwise to decrease
pressure.
80
60
40
C°
20
Set Point 1
Fan Off
Set to 38°C
Set Point 2
Fan On
Set to 60-65°C
10.2.5 Set Gas Rate
10.2 Commissioning the Burner (gas heaters)
1. Switch off and refit the main gas valve plug
(removed earlier to allow the main gas valve to
operate).
High/Low and modulating burners have additional
specific requirements. Follow the manufacturer’s
instructions using the data provided on Page 8,
Section 4.4 through Page 10, Section 4.7.
2. Switch on again and allow the burner to fire and
to settle for a few minutes.
10.2.1 Gas Supply
3. Adjust the main gas burner pressure to the
value given in the relevant Data Table for the
model concerned using the Main Gas Regula-
tor (accessed under the swivel cover). See
Page 37, Figure 17.
All aspects of the gas installation, including the gas
meter, must be inspected, tested for soundness and
purged in accordance with local and national codes.
Ensure that the air is fully purged from the heater
inlet pipe up to the main gas valve inlet test nipple.
10.2.2 Before Operating the Heater
The results of setting the gas flow rate by using
burner pressure only can lead to quite wide
variations in heat input due to the nature of the
burners used.
Ensure the burner head, air damper and pressure
switch settings are adjusted for the correct burner in
accordance with the Data Tables on Page 8, Section
4.4 through Page 10, Section 4.7 (see the burner
reference letter on data plate).
To ensure that all the controls are in safe working
order, operate the heater for the first time with the
isolating gas valve turned off.
NOTE: If the correct burner pressure cannot be
reached, then check the inlet pressure to the valve,
with the burner firing. See Technical Data Tables on
Page 8, Section 4.5 for inlet pressure requirements.
1. Turn off the gas isolating valve
Do not continue to adjust the regulator if the
pressure is not changing.
2. Using the installed external control, turn on the
burner. The automatic sequence will now begin
as described on Page 35, Figure 14.
There will be no ignition of the burner and lockout
will occur, which proves the controls are operating
correctly.
If the inlet pressure is too low to allow the correct
burner pressure setting, then the gas inlet pressure
must be corrected before completing the
commissioning.
10.2.6 Check Gas Rate
10.2.3 Fire the Burner for Dungs Combination
Gas Valves
1. Open the gas isolating valve.
It is important to check that the gas rate set during
the commissioning is within 5% of the required
flow rate.
This may be achieved by checking the gas flow to
the heater wherever possible by using the gas meter
and timing the flow through the meter. The results
should be compared with the required flow rate for
the model given in the Data Tables, adjusting the
burner pressure to correct for any error.
Checking the gas rate must be carried out with all
other appliances including any pilots, turned off.
1. After burner pressure adjustment, allow the
heater to operate for at least 15 minutes and
then re-check settings.
2. Connect a suitable pressure gauge to the
burner pressure test point.
3. On models 040 or larger, to ensure that start
gas only may pass to the burner, remove the
gas valve electrical plug for the main gas valve.
4. Reset the lockout button of the control box and
the burner should now fire. If lockout should
occur when the start gas valve energises (or
the main gas valve for models up to 030),
repeat 3 or 4 times. If after several attempts the
burner does not fire, then turn the start gas
governor adjusting screw (or main gas gover-
nor for models 015 to 030) 3 turns clockwise.
2. Remove the manometer and refit all covers to
the valve and tighten the screw of the outlet
pressure tap.
34
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SECTION 10: COMMISSIONING
3. Check gas flow rate at gas meter.
NOTE: If the pressure switch contacts (normally
closed) are open, the heater will not start.
10.3 Control - Gas-Fired Heaters
For High/Low and modulating burners, follow the
general sequence as described below and also
have extra functional stages related to air damper
positions. Refer to the burner manufacturers
instructions for further detail. Gas burners have only
one pressure switch, which is configured to cover
combustion air and reaction to increases in
combustion chamber pressure.
2. The combustion air fan turns on and the pres-
sure switch contacts close within the next 5
seconds to indicate sufficient combustion air or
lockout will occur.
3. The sequence continues with a purge period
with the burner fan running.
4. The electrical ignition switches ON at the end
of the purge period.
10.3.1 Description of Gas-Fired Heater Control
The gas fired burner fitted to all COMBAT® cabinet
heaters is controlled by a full sequence plug-in
control. This control ensures the safe start and stop
sequence and also monitors the safe presence of a
flame and burner air pressure.
5. The start gas valve opens (main gas valve for
015 - 030) and once a flame has been estab-
lished, this remains open until close down. The
flame probe is now continuously monitoring for
the safe presence of flame.
Models 015 - 030 are wired for direct ignition of the
main flame. All other models are wired for ignition of
a start gas flame as the first stage and then the main
gas flame as the second stage.
6. Five seconds later, the electric ignition turns off,
leaving the start gas flame to be proved as sta-
ble.
10.3.2 Sequence of Operation
1. With the external controls on calling for heat,
and the pressure switch at rest, the burner fan
will switch on after the control does a "self
check".
7. The start gas runs for ten seconds, then the
main gas valve opens. The control is now in its
normal run position
Figure 14: Gas-Fired Heater Control Box Sequence
Thermostat
Motor
Pressure Switch
Transformer
Gas Valve
Ionization Probe
+
30 s
3 s
+
2 s
Necessary Input Signal
Output Signal of the Device
10.3.3 Motor Starter and Thermal Overload
10.3.4 Burners
On belt-driven models, the motor is controlled by a
direct on-line contactor starter fitted with thermal
overload protection. If the thermal overload
operates, the main fan will not run. To reset, press
the reset button on the overload unit.
For details of the packaged burners, see the
manufacturer’s instructions and Page 8, Section 4.5
through Page 9, Section 4.6. When reading the data
tables, ensure that the correct table for the burner
and gas valve installed is being used. The data
NOTE: For models with a 5.5 kW motor or larger, the tables are listed under a burner reference letter
direct on-line starter will be replaced by a automatic which can be found on the heater data plate.
starter.
The overload should be set to indicate
approximately 0.2 A above the normal running
current of the heater. See Page 8, Section 4.4.
35
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
Figure 15: Motor Starter (models 040 -100 and Thermal Overload (models 060 - 100)
Wire Connecting
Overload Switch to Coil
Line Connections
Contactor
Load Connections
Thermal
Overload
Overload
Reset Button
Overload
Overload Scale
Overload
Connection (motor current amps) Adjusting Level
Figure 16: Gas Train Circuit for Dungs Gas Valves (all models)
Models 15 to 30 - All types of valve
To Burner
Models 40 to 100 - All types of valve
Automatic
To Burner
Burner
Flange
Regulator
Gas Valves
1
1
Union
Automatic
Gas Valve &
Regulator
Automatic
Gas Valve
2
2
TP3
TP3
TP1
TP2
TP1
TP2
Gas
Inlet
Gas
Inlet
T
T
T
NOTE: Orifice plate
fitted into union
between valve and
burner where required.
1
Automatic
Gas Valve &
Regulator
Automatic
Gas Valve
NOTE: Orifice plate
fitted into union
between valve and
burner for models
1
TP1 = Inlet Pressure
TP2 = Pressure between Main Gas Valves
TP3 = Valve Outlet Pressure
40/50, and burner flange
for models 60 and over.
1 = Start Gas
2 = Main Gas
Burner Pressure TP on Burner
36
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SECTION 10: COMMISSIONING
Figure 17: Dungs Gas Valve
10.4 Gas Valves
Dungs Combination Gas Valve
All model 015 - 030 gas-fired burners operate as
direct main flame ignition and have no separate start
gas train. All other models operate with a first stage
start gas flame supplied from a start gas train
containing a start gas pressure regulator and two
safety shut-off valves, for all gas types.
appliances and need no further adjustment. When
replacing a gas valve, ensure that this device is set
in the fully open position by releasing the locking
screw and turning the "V MAX" fully counter-
clockwise towards the "+" and then retightening the
locking screw.
10.4.4 Rate of Opening
The main gas is released at the second stage, and
the combination main gas valve block contains a
main burner pressure regulator and two safety shut-
off valves, for all gas types. See Page 37, Figure 17.
For high/low or modulating burners, the Dungs gas
valve has extra features because it is an air/gas ratio
control valve. Please refer to the manufacturer’s
instructions for setting the controls.
The slow opening adjustment can be seen on Page
37, Figure 17. This device is a hydraulic damper
which slows down the rate of opening of the second
main gas valve to give a smooth main gas ignition.
This is preset at the factory at the slowest setting
and will need no further adjustment. If a new valve is
fitted, then remove the plastic screw on top and with
a small screwdriver turn the "V Start" screw fully
clockwise towards the "-" and refit the plastic cover.
10.4.1 Start Gas Valves
10.5 Combustion Testing (all models)
Where fitted, the start gas valve train is fitted with a
pressure regulator and two start gas safety shut off
valves. The start gas regulator is used to adjust the
burner firing rate during the start gas phase of these
models.
Combustion quality must be tested to prove correct
heater operation. Incorrect results will indicate faults
with the installation or appliance.
Combustion testing must be carried out with all
covers in place. The flue gas is sampled in the flue,
within 1 meter of the heater. The values of CO2
should be between 9.5% and 10.0% for natural gas
and 11% for LPG, depending upon the model.
The CO will be up to 80 ppm (0.008%) dry, air free,
depending upon the model. Temperature rise of the
flue gases above ambient should be approximately
160°C to 180°C. Seal the test hole in the flue after
testing.
To alter combustion performance, open/close the
combustion air damper to reduce or increase these
values. Once adjusted to the optimum combustion
setting, lock the air damper into position. Repeat the
steps in Section 10.2.6.
10.4.2 Main Gas Valves
See Page 37, Figure 17 for the position of the burner
pressure regulator. This must be used to set the
burner pressure indicated in the data tables in
Section 4.
For high/low or modulating burners, the Dungs gas
valve has extra features because it is an air/gas ratio
control valve. Please refer to the manufacturer’s
instructions for setting the controls.
10.4.3 Throughput Adjuster
These valves have a throughput adjuster fitted to the
second main gas valve. See Page 37, Figure 17.
This will be factory set at fully open on new
37
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
10.5.1 Pressure Switch
10.6 Commissioning the Burner (Oil Heaters)
Check all valves between the fuel tank and the
heater are open, including the fire valve.
WARNING
Ensure that oil is available at the heater inlet and
that the air has been vented from the fuel pipe
installation. Vent the air by opening the bleed screw
on top of the fuel filter. On pressurised systems,
check that the installation is running at the correct
pressure. B.M. oil lifters will need priming.
10.6.1
Electrical Shock Hazard
Ensure that the burner head and air damper settings
are adjusted for the correct burner and that the
correct atomising nozzle is fitted. See Page 10,
Section 4.7 and the burner reference number on the
data plate.
Use extreme caution while commissioning.
Failure to follow these instructions can result in
death or electrical shock.
Setting of the pressure switch must only be
carried out as part of a complete commission
which includes combustion testing.
10.6.2 Preparation for Burner Pressure Test
Attach a pressure gauge 0-15 BAR (0 - 200 psi) to
the burner pump pressure test port. (See
manufacturer’s information). A test manifold gives
you the facility for the connection of the pressure
gauge and the venting of the pump.
Remove the cover of the pressure switch. With the
burner firing, turn the pressure switch dial to the
setting indicated for that model and burner. See
Page 8, Section 4.5 through Page 9, Section 4.6.
10.7 Control - Oil-Fired Heaters
For High/Low oil burners, follow the general
sequence as described below and also have extra
functional stages related to air damper positions.
Refer to the burner manufacturer’s instructions for
further detail.
10.5.2 Complete the Commissioning
Ensure that all covers are fitted correctly and all test
points are properly sealed.
10.7.1 Description of Oil Fired Heater Control
10.5.3 High/Low and Modulating Burners
The oil fired burners fitted to the heater are
controlled by a fully automatic control and
photoelectric flame monitor unit. This control
ensures the safe start,
ignition and stop sequence and also monitors the
flame. If the flame should fail the control will go into
"lockout". The button on ther front of the control will
illuminate to indicate lockout. Press the button to
reset the control to restart the burner firing cycle.
After setting the minimum burner input and
combustion, the following check must be made:
Run the heater on low fire for a minimum of 15
minutes. Check the flue gas temperature. If the flue
gas temperature falls below 125° C, increase the low
fire gas setting until the temperature reaches 125° C,
otherwise condensation may form.
Figure 18: Oil-Fired Heaters Control Box Sequence
38
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SECTION 10: COMMISSIONING
10.7.2 Sequence of Operation
The operating sequence is as follows:
pump at the same time by loosening the pump vent
port (pump must be running). If the burner goes into
"lockout" before the pump has vented, wait one
minute, then reset the control box and repeat 10.7.5
until all the air has been vented from the pump and
the burner fires.
With the external controls on and calling for heat,
the burner fan and electric ignition will switch on.
After a combustion air purge of approximately twelve
seconds, the oil solenoid valve will open and the
burner will fire. After another five seconds, the
electric ignition is turned off and the burner will go
into its normal run position. The photo cell
continuously monitors the safe presence of the
flame. When the temperature control is satisfied, the
control box will turn off all its outputs simultaneously
and return to the rest position for the beginning of
the next sequence.
NOTE: The burner plug and socket may be used to
turn off the burner during commissioning.
10.7.6 Adjust Burner Oil Pressure
Adjust the burner oil pressure to the value in the
data table for the burner reference letter and burner
manufacturer’s information for details of the burner
oil pump. When completed, turn off burner and
remove test gauge and refit plug.
10.7.3 Fault Display Messages
10.7.7 Set Combustion Air
On burner failure, the red LED is permanently
illuminated for a period of approximately 10
seconds, followed by a brief “dark phase”, then one
of the following flash-codes will indicate the cause of
the fault. See Table 1 and Table 2. This indication
will repeat as long as the lockout reset button is not
reset.
The combustion air must be set. Measure the
emissions in the flue at a point within one metre from
the outlet of the heater and adjust for the highest
carbon dioxide (CO2) levels obtainable, usually 10.5
- 11.0%, while making little or no smoke (smoke
number 0-1). The test must be carried out with all
covers fitted and after the heater has been running
for 15 minutes.
Table 1: Fault Display
Flash-Code Key Message
10.7.8 Complete the Commissioning
Flash-Code
Pre-ignition
tv1
Safety Time
tv2
l l l l .
Test the burner for correct start and stop operation
several times. Check that all safety devices operate
correctly. Inspect the heater for any oil leaks and
repair where necessary.
Short Pulse l
l l .
Long Pulse l
Delay Time to Valve V2
tv2
Running
Low Mains Voltage
l l l .
Short Pause .
Long Pause _
10.8 Turning Off the Heater (all models)
l _
l l l _
Set the external controls to the “off” position and the
main burner will stop. The fans will run until they are
stopped automatically by the fan thermostat.
Table 2: Error Diagnosis
Do not use Electrical Isolator for control of
heater. The Electrical Isolator will switch off the
fan. The heat exchanger could be damaged. The
Warranty will not cover damage to the heat
exchanger if operated improperly.
Error Message
Flash-Code
Possible Fault
Within lockout safety time,
no flame established.
Stray light during monitor
phase, detector may be
faulty.
Lockout
l l l l l
Stray Light
l l l l l
Flash-Code for Manual Lockout
10.9 External Controls
Manual/External
Lockout
l l l l l _ l l l l l
External controls may include a time switch, room
thermostat and frost thermostat. Operate each
control to ensure that they function correctly. Set the
time switch (if fitted) and room thermostat to the
user’s requirements.
10.7.4 Fault Conditions
If at any stage during normal running the photo
electric cell fails to detect the flame, the control will
switch off and make an instant restart attempt. If the 10.10 Instruction to the User
flame signal is still missing, “lockout” will occur.
Explain the controls of the heater to the user,
including how to turn it on and off, using the controls
fitted on site.
If the flame is not detected by the photo cell during a
normal start, there will be no restart attempt and
“lockout” will occur in approximately 17 seconds
after the start.
Give this manual to the user.
If a flame is detected during the first 12 seconds
(purge), the solenoid valve will not open and the
control will “lockout”. For the control sequence, see
Page 38, Figure 18.
Ensure that the user is shown and understands the
importance of maintaining clearances to
combustibles; the user instructions on Page 40,
Section 11 through Page 41, Section 11.4; and all
warnings defined in this manual.
10.7.5 Switching On
Turn on the heater with the external controls. (Heat
ON). If the "Lockout Reset" button is illuminated,
press to reset. The combustion air fan and electric
ignition should work immediately. Vent the burner oil
39
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
SECTION 11: USER INSTRUCTIONS
11.1 User Instructions
to low fire. If the temperature rises to the second set
point, the burner will turn off. The burner will come
on again at either High or Low fire, depending on the
thermostat set point.
The COMBAT® Cabinet heaters are fully automatic
and operate from the external controls fitted on site.
The only user controls at the heater are the:
Fan Run Button - See Page 40, Figure 20.
Burner lockout reset button - See Page 41, Section
11.2.2.
Set the two stage thermostat to the desired
temperature.
Modulating Operation
The on-site control for modulating burners is a
temperature controller that provides a varying output
signal dependant upon the ambient temperature to
the control. The burner firing rate will continuously
vary between the maximum and minimum setting. If
the temperature rises with the firing rate set to the
minimum, the burner will shut down. Set the
operating temperature according to the instructions
provided with the control.
Limit thermostat reset button - See Page 40, Figure
20.
WARNING
11.2 Common User Controls (all models)
11.2.1 Combination Fan/Limit Thermostat
The Combination Fan/Limit Thermostat is located at
the top right side of the heater.
Electrical Shock Hazard
This control ensures the heater does not blow cold
air in the normal heating cycle and protects the heat
exchanger against overheating.
Disconnect electrical power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
Figure 20: Fan/Limit Thermostat
If the air flow is reduced due to power failure, the
limit thermostat will cause the burner to lockout.
11.1.1 Heater Operation
When the heater has been switched on by the
remote controls installed on site, the main burner will
automatically turn on. The burner control will control
the safe ignition of the flame. When the heat
exchanger is sufficiently heated, the fan thermostat
turns on the main fan(s).
Red limit reset button
(Press to reset)
All heaters require a constant gas and electricity
supply, which must not be interrupted during the
normal operation of this heater.
NOTE: The fan will come on during burner firing for
horizontally mounted and high-flow heaters and
modulating burners.
White fan button
Pull out for normal operation.
Press in for constant fan.
The combination fan/limit thermostat is preset
during commissioning.
See Page 8, Section 4.4 and Page 34, Figure 13.
NOTE: To reset, the heat exchanger must be cool.
Figure 19: Heater Operating Sequence
ON
CLOSE
DOWN
Description
Combination Fan/Limit Thermostat
Part Number
THERMOSTAT
CALL FOR
HEAT
K017A
ON
BURNER
RUN
ON
2-3 MINUTES
RUN ON
FAN
11.1.2 Heater Operation (high/low or modulating)
The heater will operate as described in Section
11.1.1 with these added features:
High/Low Operation
A second limit thermostat or a two-stage thermostat
will be installed on site so that as the temperature
reaches the first set point, the firing rate will reduce
40
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SECTION 11: USER INSTRUCTIONS
11.4 Simple Fault Finding (all models)
Some possible reasons for the heater not operating
are:
1. Gas supply not turned ON.
2. Electricity supply not turned ON.
3. The time and/or temperature controls are not
ON.
4. The Limit Thermostat may have operated. This
may be caused by an interruption of the electri-
cal supply or failure of the distribution fan.
Explosion Hazard
If control locks out, do not make more than 3
attempts to restart the heater.
5. The burner supply plug has been discon-
nected.
Dangerous fuel mixtures can build up.
If the Limit Thermostat persistently operates, there
is a fault which must be investigated by a contractor
qualified in the installation and service of gas or oil-
fired heating equipment.
The fault must be traced and repaired by a
registered installer or service engineer.
Failure to follow these instructions can result in
death, injury or property damage.
NOTE: If the main fan runs continuously, the white
button (Figure 20) may have been pressed in - make
sure it is pulled out. Alternatively, if a remote fan
switch is fitted it may be in the ON position.
11.2.2 Burner Lockout Reset Button
The red warning light built into the burner control
box will illuminate when the control has gone to
lockout. This may be caused by flame failure. Wait
one minute then press the reset button.
11.4.1 Simple Fault Finding (burner faults)
If the burner fails to ignite for any reason, it will go to
lockout. This will be indicated by the red light on the
heater or at the remote indicator (if fitted).
1. Press in and release the lockout reset button on
the burner or, if fitted, the remote reset.
11.3 Lighting Instructions (all models)
11.3.1 To Turn On Heater
1. Ensure that the electrical and gas supplies to
the heater are on. Check that the on-site con-
trols are “ON”.
Lockout should not occur during normal operation of
the heater and indicates there is a fault condition
which must be corrected.
NOTE: The thermostat setting must be above the
ambient temperature for the heater to operate.
2. The automatic firing sequence will begin as
described on Page 40, Figure 19. The heater
will now operate automatically under the control
of the on-site controls. Following long shut
down periods, the control may go to lockout.
See Page 41, Section 11.2.2.
11.4.2 Simple Fault Finding (oil fired heaters)
Make sure the appliance fuel valve is open and
there is oil in the tank. If the fuel tank or lines have
run dry, the fuel system will need to be vented. For
venting oil-fired heaters, See Page 38, Section 10.6
through Section 10.7.5.
11.3.2 To Turn the Heater Off
Set the installed remote controls to the “OFF”
position or turn down the remote thermostat below
the ambient temperature.
The burner will turn off immediately.
The fan will continue to run for a few minutes.
To restart, turn the remote control to “ON".
If the heater will remain off for a long period of time,
when the main fan(s) have stopped, turn off the fuel
supply valve and main electrical isolator. To restart
open the fuel supply valve and follow the
instructions in Section 11.3.1.
41
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Leave the building.
6. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier’s
instructions.
7. If you cannot reach your gas
supplier, call the Fire Department.
WARNING
Fire Hazard
Do not store or use petrol or other
flammable vapours and liquids in the
vicinity of this or any other appliance.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
damage.
42
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SECTION 12: SERVICING
SECTION 12: SERVICING
12.1 Servicing Instructions
After commissioning, the heater will require
maintenance to be carried out annually. If the heater
is used in a dirty or dusty area, more frequent
maintenance may be necessary.
12.3 Fan/Motor Assembly Maintenance (all
models)
The main fan bearings are permanently sealed and
do not need lubrication. Before cleaning, turn off fuel
and electrical supply. Remove the heater side
panels and use a small brush or duster to clean the
fan blades from each side. Replace panels when
done.
Installation, Service and Annual Inspection of the
heater must be done by a contractor qualified
in the installation and service of gas or oil-fired
heating equipment.
Figure 21: Belt Tension
8 mm to 10 mm
WARNING
Fan
Pulley
Motor
Pulley
Check the condition and tension of the drive belts.
The condition is best inspected with the belts
removed. Check for chaffing or lateral cracks.
Replace belts as a matched pair as necessary.
Do not over-tighten belts, as this may cause bearing
damage.
Cut Hazard
Turn off fuel and electrical supply before maintenance.
Fan can start automatically at any time.
Failure to follow these instructions can result in severe
injury or product damage.
12.4 Heat Exchanger Maintenance
Ensure that the front collector box is clean and that
the turbulators fitted to the tubes are in good
condition.
Also inspect the joint between the heat exchanger
and the flue to ensure that it is still sealed.
NOTE 1: After any maintenance or repair work,
always test fire the heater in accordance with the
commissioning instructions on Page 33, Section 10
through Page 39, Section 10.10 to ensure all safety
systems are in working order before leaving the
heater to operate. Minor faults may be traced by
using the troubleshooting charts on Page 45,
Section 14 through Page 50, Section 14.7.
1. If maintenance is needed, remove the burner.
See Page 51, Section 15.1.
2. Remove the upper front panel.
3. Remove the front cover of the heat exchanger.
4. Remove and inspect the turbulators.
NOTE 2: Check all fuel pipes and pipe joints to
ensure there are no cracks or gas leaks. Any cracks
in the pipes or pipe joints must be repaired.
5. Clean out any deposits from flue ways and the
combustion chamber, using a vacuum cleaner
and brush. Inspect the combustion chamber
and heat exchanger for damage or corrosion.
NOTE 3: Inspect all suspended components and
hardware. Insure that they are in good condition,
properly tightened, and corrosion free.
6. Any damage must be referred to
Roberts-Gordon.
12.2 Burner Maintenance
1. See the manufacturer’s information for specific
instructions.
7. Replace components in reverse order to above
- replacing gasket material and any damaged
turbulators.
2. Clean the fan (and fuel filters, when fitted).
Inspect all components, including the flame
monitoring and ignition system, and correct
operation of fuel control valves.
8. Inspect and repair any damage to the seal
between the flue and the flue spigot.
12.5 Thermal Insulation
While the upper panels are removed for heat
3. For oil-fired burners it is recommended that the
atomising oil nozzle be replaced during the
annual service.
exchanger servicing, the thermal insulation fitted to
all the upper panels must be inspected. Insulation
should be sound, with the foil face in good condition.
If any thermal insulation is in poor condition, then it
must be replaced with new insulation material and
suitably sealed at the edges with adhesive foil tape.
43
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
SECTION 13: CONVERSION BETWEEN FUELS
13.1 General
All COMBAT® Cabinet heaters may be operated on
fuel oil, natural gas or propane gas, depending on
which burner type has been fitted. Any conversion
between fuels must be done by a contractor
qualified in the installation and service of gas or oil-
fired heating equipment. Conversion must be carried
out in accordance with the information provided to
maintain compliance with the CE product
certification.
13.2 Burner Conversion
Burners designed to operate on class D (35 sec)
fuel oil (Gas Oil) may be converted to operate on
kerosine (28 sec). This may shorten the life
expectancy of the fuel pump and fuel train
components.
Burners designed to burn natural gas may be
converted to burn LPG propane gas or vice versa.
For details of the changes necessary, please
contact Roberts-Gordon with the heater serial
number and burner type or consult the burner
manufacturer’s information.
Heaters designed to burn fuel oil may only be
converted to burn gas by replacing the complete
burner.
Heaters designed to burn gas may only be
converted to burn fuel oil by replacing the complete
burner.
44
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SECTION 14: TROUBLESHOOTING
SECTION 14: TROUBLESHOOTING
14.1 General
WARNING
Explosion Hazard
Installation must be done by a registered installer/
contractor qualified in the installation and service of
gas-fired heating equipment or your gas supplier.
Failure to follow these instructions can result in death,
injury or property damage.
START
Assuming fuel & electrical
supplies are ON
Is the 'lockout' button on the
Check if the control fuse in
the heater has blown.
Repair or Replace.
No
Does the burner fire?
No
Yes
burner alight?
Yes
No
Test burner as in
14.2 (oil-fired),
14.3 (gas-fired).
Check external controls are
ON and the fuse in the
burner is sound.
Yes
Press in the white button on
Use 14.6 or 14.7 to test fan.
Does the main fan run?
No
No
fan/limit thermostat.
Yes
See Figure 13 to check
thermostat settings.
Replace fan/limit
thermostat.
No
Yes
Check main fan for blockage
or belt tension and correct
rotation.
Does the burner stop after
running for several minutes
with controls still ON ?
Yes
Did burner 'lockout' ?
No
No
Yes
Check operation and setting
of fan/limit thermostat. Repair
or replace as necessary.
Test burner as in
14.2 (oil-fired),
14.3 (gas-fired).
No
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Heater Operating
TROUBLESHOOT ENDS.
No
For your safety and optimum heater performance, use only ROBERTS GORDON® replacement parts.
Conduct Commissioning procedure as shown on Page 33, Section 10.
45
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
14.2 Troubleshooting for Oil Burners (see manufacture’s instructions)
WARNING
Electrical Shock Hazard
Do not touch ignition components.
Voltage from ignition components is high.
Failure to follow these instructions can
result in death or electrical shock.
START
Assuming fuel & electrical
supplies are ON
Check if the control fuse in
the heater has blown.
Check supply to burner
Check control box.
Does the burner fire?
No
No
No
motor.
Yes
No
Yes
Repair or replace.
Yes
Does the burner control
box 'lockout' before 15
seconds?
Disconnect photo cell
and try again.
Control box faulty.
Repair or replace.
Yes
No
Yes
Use Section 14.4 to
trace fault.
No
Check ignition electrodes are
set as in the manufacturer's
instructions, the fuel supply
and nozzle.
Does the burner control
box 'lockout' after 15
seconds?
No
Did the burner fire?
Yes
Yes
No
Use Section 14.4 to
Check oil solenoid valve.
trace fault.
No
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Heater Operating
TROUBLESHOOT ENDS.
No
For your safety and optimum heater performance,
use only ROBERTS GORDON® replacement parts.
Conduct Commissioning procedure as shown
on Page 33, Section 10.
46
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SECTION 14: TROUBLESHOOTING
14.3 Troubleshooting for Gas Burners (see manufacturer’s instructions)
WARNING
Electrical Shock Hazard
Do not touch ignition components.
Voltage from ignition components is high.
START
Assuming fuel & electrical
supplies are ON.
Failure to follow these instructions can
result in death or electrical shock.
Is the pressure switch
at rest?
(no contact open)
See Section 10.5.1 for
setting.
Does the burner fan run?
No
No
Yes
Fault lies elsewhere.
Yes
Use Section 14.4 to check
the flame
Does the burner control
box 'lockout' before 10
seconds?
Yes
Yes
monitoring system.
No
Check combustion air fan is
clean. Check combustion
chamber is clean and sound.
Check flue is clean and
Does the burner control
box 'lockout' after 10
seconds?
Check settings
pressure switches.
No
sound. Check joint between
flue spigot and flue is sound.
No
Check ignition circuit, fuel
supply and gas solenoid
valves.
Does the burner fire?
No
Yes
No
Yes
Use Section 14.4 to check
the flame
Does 'lockout' occur?
monitoring system.
No
Check main gas valves and
Does main gas fire?
wiring.
Yes
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Heater Operating
TROUBLESHOOT ENDS.
No
47
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
14.4 Troubleshooting for Flame Supervision System
The flame supervision system is different for gas-fired and oil-fired heaters but may be tested in a
similar way.
Gas-fired heaters use a rectification flame probe to monitor the flame.
Oil-fired heaters use a photo sensitive cell to monitor the flame.
To connect a suitable meter into the circuit to monitor the flame signal current, disconnect one of the
wires to the monitor (there is only one for gas-fired).
Connect a suitable DC ammeter between the terminal just disconnected and the wire taken from it.
Should the meter read backwards, then reverse its connections.
Readings should be approximately as follows(For further details see burner manufacturer’s
instructions):
Oil-Fired
Gas-Fired
Maximum flame Minimum flame Maximum flame Minimum flame
current with no
flame
current with
flame
current with no
flame
current with
flame
12 μ Amp
25 μ Amp
0.5 μ Amp
1.0 μ Amp
START
Connect a DC ammeter in
series with the flame monitor.
Turn on all controls and
ensure supply to burner
OIL-FIRED
Is there a stray light entering
the burner or is there a
flame?
Is there a current flowing
in excess of the max.
value for NO flame?
Repair or replace.
Yes
Yes
GAS-FIRED
Inspect and test the flame
probe and wiring for a short
circuit to earth.
No
OIL-FIRED
Clean or replace photo
electric cell as necessary.
GAS-FIRED
Does 'lockout' occur when
a flame is present?
Replace flame probe.
Check for it's correct position.
Check wiring to flame probe.
Check burner earth
connection.
No
Control box faulty.
Replace with correct type.
'Lockout' still occurs?
Yes
No
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Heater Operating
TROUBLESHOOT ENDS.
No
48
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14.5 Troubleshooting for Solenoid Valves Circuit
START
Is there pressure on the
outlet of the valve when the
valve should be closed?
Is there an electrical supply
to the valve terminals?
Fault lies elsewhere.
Investigate and correct.
Yes
Yes
No
Valve faulty.
Replace with correct type.
No
Is there an electrical supply
to the valve terminals?
Fault lies elsewhere.
Investigate and correct.
Does valve open at the
Yes
No
correct time?
No
Valve faulty.
Replace with correct type.
Yes
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Valve Operating
TROUBLESHOOT ENDS.
No
14.6 Troubleshooting for Main Fan Circuit (1 Ø)
START
Main fan will not operate
following warm up
period of heat exchanger.
Press in white button
of fan/limit thermostat
Re check supply to
terminals L1 to N.
Fault lies elsewhere.
No
No
No
and retest.
Check for 230 V
at terminals 1 to N.
Yes
Yes
Check the setting of the
fan thermostat as in
Figure 13.
Check calibration of the
fan thermostat.
The dial should indicate
the approximate
Yes
temperature of the
sampled air.
No
Fan thermostat faulty.
Replace and reset.
Yes
Check and test wiring to
motor. Does the motor run
now?
Motor faulty.
Replace complete fan unit.
No
Yes
No
Yes
Thermal overload in motor
is faulty.
Replace complete fan unit.
Motor stops after running
some time.
No
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Motor running.
TROUBLESHOOT ENDS.
For your safety and optimum heater performance, use only ROBERTS GORDON® replacement parts.
Conduct Commissioning procedure as shown on Page 33, Section 10.
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14.7 Troubleshooting for Main Fan (3 Ø)
START
Main fan will not operate
following warm up
period of heat exchanger.
Check for 400 V three phase
No
Fault lies elsewhere.
supply at main terminals.
Yes
Press in white button
of fan/limit thermostat
and retest.
Check for 230 V at terminals
No
Fault lies elsewhere.
No
1 to N
Yes
Check the setting of the
fan thermostat as in
Section 5.1.
Check calibration of the
fan thermostat.
The dial should indicate
the approximate
Yes
temperature of the
sampled air.
No
Fan thermostat faulty.
Replace and reset.
Yes
Reset thermal overload
and check setting. See
page 28, Section 10.1.6.
Check for 230 V at coil
No
terminals
of fan contactor.
Check for 400 V three phase
at input and output of
contactor.
Contactor or overload faulty.
Replace as necessary.
Does fan run now?
No
No
Yes
Check and test wiring to
motor.
Motor faulty.
Replace complete fan unit.
Yes
Thermal overload in motor
is faulty.
Replace complete fan unit.
(direct drive fans only)
Motor stops after running
Yes
some time.
No
If problems persist, contact
ROBERTS GORDON® at
Tel: +44 (0)121 506 7709
www.rg-inc.com
Motor running.
TROUBLESHOOT ENDS.
No
For your safety and optimum heater performance, use only ROBERTS GORDON® replacement parts.
Conduct Commissioning procedure as on Page 33, Section 10.
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SECTION 15: REMOVAL AND REPLACEMENT PARTS
SECTION 15: REMOVAL AND REPLACEMENT
PARTS
See warnings and notes on Page 43, Section 12
before removing or replacing parts.
a new fuse into the spring clips. To replace the
holder, remove the fuse, pull off the two tag
connectors from either end, and then unscrew the
central screw. Reverse these instructions to refit.
15.4 Combination Fan/Limit Thermostat
15.1 Burner Components
To gain access to the thermostat:
1. Loosen the cover retaining screw (on top) and
remove cover.
To remove the burner from the heater:
1. Unplug the burner electrical supply from the
heater.
2. Disconnect the electrical connections by push-
ing in with a small screwdriver and pulling out
the wiring. See Page 52, Figure 22.
2. Isolate the fuel supply at the inlet manual valve
and disconnect the inlet fuel pipe.
3. Unscrew the nuts holding the burner mounting
flange to the heater.
3. Unscrew the conduit bush and the two screws
and withdraw the unit from the cabinet.
4. Remove the burner from the heater, retaining
the gasket for reuse.
For removal of burner components, follow the
manufacturer’s instructions. To refit the burner,
reverse the instructions above. Fit the gasket
between the burner mounting flange and the heater.
Use a new gasket if necessary.
4. Reverse these instructions to refit. See Page
34, Figure 13 to set the new thermostat.
15.5 Main Fan Motor (3 Ø Belt Drive)
1. Disconnect electrical connections at contactor
and overloads. See Page 51, Section 15.2.
2. For Star/Delta starters, there are six wires
between the motor and the starter.
15.2 Direct On-Line Main Fan Starter and
Thermal Overload Unit (3 Ø)
3. Remove the left lower side panel to access the
motor.
This assembly comprises two parts, the contactor
and the overloads, which may be changed
seperately.
4. Unscrew the bolts securing the motor to the
mounting bracket. Lift the motor out.
15.2.1 The Contactor
5. Reverse these instructions to refit, tensioning
the belts as on Page 43, Figure 21 and ensur-
ing the pulleys are aligned.
To remove the contactor:
1. Remove the overloads as on Page 51, Section
15.2.2.
6. For Star/Delta starters, pay specific attention to
the six motor connections.
2. Remove the line connections to the top of the
contactor (noting the colour code) and the two
coil connections at the top rear of the contactor.
15.6 Main Fan Units
3. Unscrew the fixing screws to remove the con-
tactor from the panel.
Depending on the model of the heater, the main fan
unit will be direct drive (with integral motor) or belt
drive. Models 060-100 are belt drive, double fan
units. All the fans are secured to the base of the
heater by four bolts per fan case, and to the fan tray
by bolts through the outlet flange.
4. Reverse these instructions to refit. Check rota-
tion of the fan after working on the contactor.
15.2.2 The Overloads (models 060 to 100)
To remove the overloads:
To gain access to the fans:
1. Unscrew the motor connecting wires from their
terminals at the bottom of the assembly. Note
the colour code.
1. Remove the lower side panels of the heater.
For models 060-100 and High Flow models,
remove the upper side panels of the same side
and the vertical centre bar to allow the fans to
slide out of the cabinet.
2. Disconnect the overload circuit connections
near the overload reset button.
2. Disconnect the electrical connections. On
direct drive units, these will be at the terminal
block for single phase and at the contactor for
three phase.
3. Disconnect the overload fixing and connecting
screws from the bottom of the contactor.
4. Ensure that any replacement overload is of the
correct rating and that it is reset correctly. See
Page 33, Section 10.1.6.
3. Remove the screws. The fan will pull out of the
heater through the side.
15.3 Control Circuit Fuse (10 or 5 A, 1-1/4" long
sand filled)
4. Reverse these instructions to refit, tensioning
the belts as on Page 43, Figure 21.
The control fuse is removed by grasping the centre
and pulling it out of the spring clips. To replace, push
51
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COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
5. Check the correct rotation of the fan as on
Page 33, Section 10.1.5.
NOTE: The direct drive fan unit motor can only be
replaced as a complete fan/motor assembly.
Figure 22: Combination Fan/Limit Thermostat
WARNING
Fire Hazard
Break-off link must be removed from replacement
thermostat.
Heat exchanger damage may result.
Failure to follow these instructions can result in
death, injury, property damage or product damage.
Dial
Set Point 3 Limit Temp.
Set Point 2 Fan On
Set Point 1 Fan Off
Push Screwdriver in
and hold to release
Push in Lock
Wire to Controlled Equipment
Fan Terminals
Limit Stat
Manual
Reset Button
(Red)
Manual Fan Switch
(White)
Pull out for normal operation.
Push in for continuous fan.
Limit Terminals
ROBERTS GORDON®
thermostats do not have a
break-off link. Remove
break-off link if thermostat
was not provided by
Roberts-Gordon.
52
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SECTION 16: PARTS LIST
SECTION 16: PARTS LIST
The following items are recommended as spares
which may be required during routine service and
replacement of the air heater. There is also a list of
parts in the burner manufacturer’s manual which
relates to the parts required for the packaged burner
fitted to the heater.
16.1 Spare Parts List
Part No.
A 025
Description
DDC 1220 Direct Drive Fan
DDC 1500 Direct Drive Fan
BDC 1500 Belt Drive Fan
A49 Vee Belt
1
-
1
-
1
-
-
1
-
-
1
-
-
-
-
-
-
-
A 029
-
-
A 038
-
-
-
1
2
1
1
1
-
1
2
1
1
1
-
1
2
1
1
1
-
1
2
1
1
-
A 136
-
-
-
-
-
K 017
Combination Fan/Limit Thermostat
Motor Contactor
1
-
1
-
1
-
1
-
1
-
D 004A
D 020A
D 024A
Motor Overload 4.5/7.5 A
Motor Overload 6-10 A
-
-
-
-
-
-
-
-
-
-
1
53
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Attach this information to the wall near the ROBERTS GORDON®heater
®
Read the Installation, Commissioning, Operation and Service Manual thoroughly before installation, operation or service.
OPERATING INSTRUCTIONS
WARNING
1. STOP! Read all safety instructions on this information sheet.
2. Open the manual fuel valve in the heater supply line.
3. Turn on electric power to the heater.
4. Set the thermostat to desired setting (above ambient temperature).
The automatic starting sequence begins.
NOTE: Following long shutdown periods, the burner control may go
to ‘LOCKOUT’ during the start sequence. Push the reset button to
recommence firing. Contact service department if ‘LOCKOUT’
continues (see manual for details).
TO TURN OFF THE HEATER
Fire Hazard
1. Turn the thermostat/time switch to ‘OFF’. The burner will turn off
immediately, but fans will continue to cool theheat exchanger until
the fan thermostat switches off.
Some objects can catch fire or explode when placed
close to heater.
IF THE HEATER WILL NOT OPERATE, TO ENSURE YOUR SAFETY,
FOLLOW THESE INSTRUCTIONS TO SHUT DOWN YOUR HEATER
Keep all flammable objects, liquids and vapours the
required clearances to combustibles away from heater.
1. Set the thermostat to ‘OFF’ or the lowest setting.
2. Turn off electric power to the heater.
Failure to follow these instructions can result in death,
injury or property damage.
3. Turn off the manual fuel valve in the heater supply line.
4. Call your registered installer/contractor qualified in the
installation and service of gas or oil-fired heating equipment.
Installation Clearances
Clearances to Combustibles
.6 m
.6 m
.6 m
.6 m
4 m
.6 m
Roberts-Gordon Europe Limited
Unit A, Kings Hill Business Park
Darlaston Road, Wednesbury
West Midlands WS10 7SH UK
Telephone: +44(0)121 506 7700
Fax: +44(0)121 506 7701
Telephone: 716.852.4400
Fax: 716.852.0854
Toll Free: 800.828.7450
Roberts-Gordon, LLC
1250 William Street
P.O. Box 44
Service Telephone: +44(0)121 506 7709
Service Fax: +44(0)121 506 7702
E-mail: uksales@rg-inc.com
Buffalo, NY 14240-0044 USA
E-mail: export@rg-inc.com
Installation Code and Annual Inspections:
All installations and service of ROBERTS GORDON® equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Roberts-Gordon and
conform to all requirements set forth in the ROBERTS GORDON® manuals and all applicable governmental authorities pertaining to the installation, service and operation of the equipment. To help
facilitate optimum performance and safety, Roberts-Gordon recommends that a qualified contractor annually inspect your ROBERTS GORDON® equipment and perform service where necessary,
using only replacement parts sold and supplied by Roberts-Gordon.
For installations at elevations above 2000' (610 m), the appliance shall be derated 4% for each 1000' (305 m) of elevation above sea level.
Further Information: Applications, engineering and detailed guidance on systems design, installation and equipment performance is available through ROBERTS GORDON® representatives.
Please contact us for any further information you may require, including the Installation, Commissioning, Operation and Service Manual.
This product is not for residential use.
© 2007 Roberts-Gordon, LLC
Printed in U.S.A.
P/N 91040095
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