®
Combat UHA - Series
Axial Fan Tubular Unit Heaters
UHA Models 30 - 125
UHA Models 150 - 400
n Reduce dirt build-up on burners and
extend life of heat exchanger with
separated combustion units.
n Reliable ignition with direct spark
ignition burners.
n Minimize summer heat build-up
n Installation and operation flexibilty
with rear or top air and flue connections
(Models UHA 30 - 125 only).
with remote fan operation.
n Longer life and less maintenance with
optional stainless steel heat exchangers.
n Ideal for smaller spaces with low profile
design (Models UHA 30 - 125 only).
n Variable air throw direction with adjustable
horizontal louvers and optional adjustable
vertical louvers.
1.800.828.7450
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Combat UHA 150 - UHA 400 Clearance and Dimension Data
Clearances to Combustibles - Standard UHA Range (Models 150 - 400)
Above Heater Below Heater To Side of Heater
6" 3" 6"
To Rear of Heater
24" Airflow Clearance
To Front of Heater
Access Side Door
31" Access Clearance
To Flue
118"
2"
Dimension Data - Standard UHA Range (Models 150 - 400)
Model
150
175
200
225
250
300
350
400
'A' Width
[in]
[in]
43
27
43
27
43
43
43
50
50
50
'B' Height
35.25
35.25
35.25
43.5
43.5
43.5
'C' Depth
[in]
[in]
[in]
30
17.6
9.5
30
17.6
9.5
32
17.6
17
32
17.6
17
32
17.6
17
30
30
30
'D' Support Spacing
'F' Center of Flue
24.7
13.6
24.7
13.6
24.7
13.6
'G' Flue Center to Air Intake Center [in]
6
6
6
6
6
7
7
7
'H' Position of Flue
[in]
[in]
[in]
4.5
4.5
4.75
4.75
4.75
4.9
4.9
4.9
'J' Gas Inlet Position
5.9
3.4
5.9
3.4
5.9
3.4
5.9
3.4
5.9
3.4
8.7
6.2
8.7
6.2
8.7
6.2
'K' Electrical Supply Position
Maximum Recommended
Mounting Height to Heater Base
20
20
25
25
25
30
30
30
[ft]
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Combat UHA-Series Technical Data
Model
30
30
45
45
60
60
75
75
100
100
82
125
150
175
200
225
250
300
350
400
Total Input
[Btu/h] x [1000]
[Btu/h] x [1000]
125
150
175
200
225
250
300
350
385
Total Output
Efficiency
24.6
36.9
49.2
61.5
102.5 123 143.5 164 184.5 205
246 288.6 315.7
82% - All Models
Number of Burners
Gas Connection
Inlet Pressure
2
3
4
5
6
7
7
8
9
10
¾
11
¾
12
¾
14
¾
14
¾
[in]
3
3
/8
/8
½
½
½
½
½
½
½
[in wc] NG Min.
LPG Propane Min.
NG & LP Propane Max.
5 - All Models
12 - All Models
14 - All Models
Electrical Supply
115 V / 60 Hz / 1 Ø - All Models
Full Load Amps @ 115 V
3.0
3.0
4.1
4.1
5.8
5.8
7.1
7.1
10.6
10.6
10.6
11.6
11.6
11.6
Air Volume
[CFM]
[ft]
691
12
691
12
1376 1376 1902 1902 2245 2245 3716 3716 3716 4663 4663 4663
Recommended Maximum
Mounting Height
15
15
20
20
20
20
25
25
25
30
30
30
Number of Axial Fans
1
1
1
1
1
1
1
1
1
1
1
2
2
2
Axial Fan Diameter
[in]
10
10
16
16
16
16
16
16
19.7
19.7
19.7
16
16
16
Horsepower
.06
1.8
.06
1.8
.08
2.6
.08
2.6
.2
.2
.2
.2
.3
.3
.3
.4
.4
.4
Fan Motor Amps @ 115 V
Fan Motor RPM
Fan Motor Type
Flue Size
4.3
4.3
4.3
4.3
4.7
4.7
4.7
8.6
8.6
8.6
1630 1630 1030 1030 1175 1175 1200 1200 1085 1085 1100 1155 1155 1155
SP
SP
SP
SP
PSC
PSC
PSC
PSC
PSC
PSC
PSC
PSC
PSC
PSC
[in]
[in]
[lb]
4 - All Models
Combustion Air Size
Weight
4
4
4
4
4
4
4
4
4
4
4
5
5
5
65
70
85
90
105
110
205
225
255
265
270
355
375
375
Important Notice
The equipment described in this Data Sheet is suitable for most commercial and industrial heating applications. However, in certain environments,
particularly where there is a chlorinated atmosphere (e.g. near degreasing plant or other solvent processes) or a particularly dusty atmosphere, specialist
advice should be sought at the design stage. Roberts-Gordon reserves the right to alter product specification details without notice.
Installation Code and Annual Inspections:
All installations and service of ROBERTS GORDON® products must be performed by a contractor qualified in the installation and service of products 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® products and perform service where necessary, using only replacement parts sold and sup-
plied by Roberts-Gordon, LLC.
Further Information: Applications, engineering and detailed guidance on systems design, installation and product performance is available through
ROBERTS GORDON® representatives. Please contact us for any further information you may require, including the Installation, Operation and Service Manual.
This product is not for residential use.
This document is intended to assist licensed professionals in the exercise of their professional judgement.
Roberts-Gordon, LLC
1250 William Street
P.O. Box 44
Buffalo, NY 14240-0044 USA
Telephone: 716.852.4400
Fax: 716.852.0854
European Office:
Roberts Gordon Europe Limited
Telephone: +44(0) 1902 494425
Fax: +44(0) 1902 403200
Toll Free: 800.828.7450
© 2006 Roberts-Gordon, LLC 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 written
permission of Roberts-Gordon, LLC.
Printed in U.S.A.
UHASNA
5M 1106 Rev. A
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