®
SUNLINE 2000
SINGLE PACKAGE HEAT PUMPS
Supersedes: 511.06-N5Y (1298)
511.06-N5Y (500)
035-16197
INSTALLATION INSTRUCTION
MODELS B*CH 036 AND 048 (STYLE B)
AND MODELS B*CH 060A (STYLE A)
(10 SEER - w/Belt-Drive Option)
(* = 3 or 5)
GENERAL
Replacement Parts:
YORK Model BCH units are single package heat pumps
designed for outdoor installation on a rooftop or a slab.
Supplemental electric heaters are available as field-installed
accessories.
• Refer to Parts Manual for complete listing of replacement
parts on this equipment.
All forms referenced in this instruction may be ordered from:
The units are completely assembled on rigid, permanently
attached base rails.All piping, refrigerant charge, and electrical
wiring is factory-installed and tested. The units require only
electric power and duct connections at the point of installation.
Standard Register
Norman, OK 73069
Toll Free: Tel. 877-318-9675/Fax. 877-379-7920
The supplemental electric heaters have nickel-chrome
elements and utilize single point power connection.
APPROVALS
Design certified by U.L. and C.G.A. as follows:
INSPECTION
1. For use as a heat pump only unit or a heat pump unit with
supplemental electric heat.
As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier’s freight bill.A separate
request for inspection by the carrier’s agent should be made in
writing. Refer to Form 50.15-NM for additional information.
2. For outdoor installation only.
3. For installation on combustible material.
LIMITATIONS
REFERENCE
Additional information on the design, installation, operation and
service of this equipment is available in the following reference
forms:
CAUTION
THIS PRODUCT MUST BE INSTALLED IN STRICT COMPLIANCE WITH
THE ENCLOSED INSTALLATION INSTRUCTIONS AND ANY APPLICABLE
LOCAL, STATE, AND NATIONAL CODES INCLUDING, BUT NOT LIMITED
TO, BUILDING, ELECTRICAL, AND MECHANICAL CODES.
• 55.70-N1
-General Installation
-Pre-start & Post-start Check List
• 55.70-N2
• 530.18-N1.2V -Economizer Accessory
• 530.18-N1.13V -Man. Outdoor Air Damper Accy 0-35%
• 530.18-N1.14V -Man. Outdoor Air Damper Accy 0-100%
• 530.18-N1.12V -Motorized Outdoor Air Damper Accy.
• 530.18-N7.1V -Electric Heater Accessory
WARNING
INCORRECT INSTALLATION MAY CREATE A CONDITION WHERE THE
OPERATION OF THE PRODUCT COULD CAUSE PERSONAL INJURY
OR PROPERTY DAMAGE.
• 530.18-N7.2V -Fuse Block Accessory
Installer should pay particular attention to the words: NOTE, CAUTION and WARNING. Notes are intended to clarify or make
the installation easier. Cautions are given to prevent equipment damage. Warnings are given to alert installer that personal injury
and/or equipment damage may result if installation procedure is not handled properly.
511.06-N5Y
INSTALLATION
These units must be installed in accordance with the current
edition of the following national and local safety codes:
WARNING: The unit should not be installed in an area where mud
or ice could cause personal injury. Remember that
condensate will drip from the outdoor coil during heat
and defrost cycles and that this condensate will freeze
when the temperature of the outdoor air is below 32°F.
In U.S.A.:
1. National Electrical Code ANSI/NFPA No. 70.
2. Local electric utility requirements.
In Canada:
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig the
unit by attaching chain or cable slings to the lifting holes
provided in the base rails. Spreaders, whose length exceeds
the largest dimension across the unit, MUST be used across
the top of the unit.
1. Canadian Electrical Code C22.1
2. Canadian Installation Codes CAN/CGA-B149.1 and .2.
Refer to Table 1 for Unit Application Data.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS WEIGHT
IS DISTRIBUTED EQUALLY ON THE CABLES SO THAT IT
WILL LIFT EVENLY.
If components are to be added to a unit to meet local codes, they
are to be installed at the dealer’s and / or the customer’s expense.
Size of unit for proposed installation should be based on heat
loss / heat gain calculation made according to the methods of
Air Conditioning Contractors of America (ACCA).
Units may also be moved or lifted with a forklift. Slotted
openings in the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 42".
LOCATION
Remove the nesting brackets from the four corners on top of
the unit. All screws that are removed when taking these
brackets off must be replaced on the unit.
TABLE 1 - UNIT APPLICATION DATA
208/230V
460V
575V
187 / 253
414 / 506
518 / 630
Voltage Variation
Min. / Max.*
Refer to Table 3 for unit weights and to Figure 1 for approximate
center of gravity.
Wet Bulb Temperature (°F) of Air
on Indoor Coil, Min. / Max.
Dry Bulb Temperature (°F) of Air
on Outdoor Coil, Min. / Max.
Minimum Dry Bulb Temperature
(°F) of Air on Outdoor Coil
57 / 72
45 / 120
-10
Cooling
Heating
CLEARANCES
All units require certain clearances for proper operation and
APPROXINATE
CENTER OF
GRAVITY
*Rated in accordance with ARI Standard 110, utilization range "A".
Use the following guidelines to select a suitable location for
these units.
FRONT
1. Unit is designed for outdoor installation only.
403⁄4“
821⁄4“
193⁄4“
2. Outdoor coil must have an unlimited supply of air.
447⁄8“
3. For ground level installation, a level pad or slab should be
used.The thickness and size of the pad or slab used should
meet local codes and unit weight. Do not tie the slab to the
building foundation.
FIG. 1 - CENTER OF GRAVITY
service. Refer to Figure 6 for the clearances required for
combustible construction, servicing, and proper unit operation.
4. Roof structures must be able to support the weight of the unit
and its options and / or accessories. Unit must be installed on
a solid level roof curb or appropriate angle iron frame.
WARNING:Do not permit overhanging structures or shrubs to
obstruct outdoor air discharge outlet.
CAUTION: If a unit is to be installed on a roof curb or special frame
other than a YORK roof curb, gasketing must be applied to
all surfaces that come in contact with the unit underside.
DUCTWORK
Ductwork should be designed and sized according to the
methods in Manual Q of the Air Conditioning Contractors of
America (ACCA).
5. Maintain level tolerance to 1/2" maximum across the entire
length or width of the unit.
A closed return duct system shall be used. This shall not
preclude use of economizers or outdoor fresh air intake. The
supply and return air duct connections at the unit should be
made with flexible joints to minimize the transmission of noise.
6. Elevate the unit sufficiently to prevent any blockage of the
air entrances by snow in areas where there will be snow
accumulation. Check the local weather bureau for the ex-
pected snow accumulation in your area.
The supply and return air duct systems should be designed for
the CFM and static requirements of the job. They should NOT
be sized to match the dimensions of the duct connections on
the unit.
OUTDOOR COIL CONDENSATE DRAINAGE PRECAUTION
Condensate will drain from the outdoor coil during the heating
and defrost cycles. Normally this condensate may be allowed
to drain directly onto the ground/roof. A gravel bed is
recommended to prevent mud splashing.
CAUTION: When fastening ductwork to the side duct flanges
on the unit, insert the screws through the duct
flanges only.DO NOT insert the screws through the
Unitary Products Group
3
511.06-N5Y
casing.
Figure 6. Several existing screws at the top of the unit and one
approximately midway down from the top will be used for
mounting the bracket. Screws should be loosened only - NOT
REMOVED. Mounting holes in the bracket have elongated
keyways allowing easy installation. Re-tighten screws after
bracket is in place to ensure panels will remain leak tight.
Outdoor ductwork must be insulated and water-
proofed.
Refer to Figure 6 for information concerning side and bottom
supply and return air duct openings.
FILTERS
COMPRESSORS
1" filters are supplied with each unit. 2" replacement filters may
be used with no modification to the filter racks. Filters must
always be installed ahead of the evaporator coil and must be
kept clean or replaced with same size and type. Dirty filters will
reduce the capacity of the unit and will result in frosted coils or
safety shutdown. Minimum filter area and required sizes are
shown in Table 3.
On some units the compressor is mounted on springs which
have been tightened down for shipment only.
After this unit is installed, back out the compressor bolts until
the sleeve clears the top grommet.
CAUTION: Do Not loosen compressor mounting bolts.
CONDENSATE DRAIN
THERMOSTAT
Plumbing must conform to local codes. Use a sealing
compound on male pipe threads.Install a condensate drain line
from the 3/4" PVC female connection on the unit to spill into an
open drain.
The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure, or heat from electrical fixtures or
appliances. Follow manufacturer’s instructions enclosed with
thermostat for general installation procedure. Color coded
insulated wires (#18 AWG) should be used to connect
thermostat to unit. See Figure 3 for wiring details.
NOTE: The condensate drain line MUST be trapped to provide
proper drainage. See Figure 2.
SERVICE ACCESS
NOTE: On units with economizer, remove jumper "J1" from
terminals 8 and 10 on plug connector J3/P7 on the
relay board in the unit control box. Refer to the unit
wiring labels located on the inside of the control box
access panel.
An "Emergency Heat" position is provided with the thermostat.
In the "Emergency Heat" position, the thermostat will allow
electric resistance heat only. The compressor will be locked
out. A pilot light on the thermostat will indicate that the switch
is on "EM HT".
POWER AND CONTROL WIRING
Field wiring to the unit must conform to provisions of the National
Electrical Code (NEC) ANSI/NFPA No. 70 (in U.S.A.), current
Canadian Electrical Code (CEC) C22.1 (in Canada) and/or local
ordinances.The unit must be electrically grounded in accordance
with the NEC and CEC (as specified above) and/or local codes.
Voltage tolerances which must be maintained at the compressor
terminals during starting and running conditions are indicated on
the unit Rating Plate and Table 1.
FIG. 2 - RECOMMENDED DRAIN PIPING
Access to all serviceable components is provided by the
following removable panels:
• Compressor compartment
• Heater compartment
• Blower compartment
• Main control box
The wiring harness furnished with this unit is an integral part
of a UL and C.G.A. design certified unit. Field alteration to
comply with electrical codes should not be required.
• Filter compartment
• Motor Access (on units w/belt-drive option)
Refer to Figure 6 for location of these access panels.
A disconnect switch should be field provided for the unit. The
switch must be separate from all other circuits. Refer to Figure
6 for installation location.If any of the wire supplied with the unit
must be replaced, replacement wire must be of the type shown
on the wiring diagram.
BLOWER SPEED SELECTION
Three blower motor speeds are available on the direct-drive
units. The speed selection for the direct-drive units is
determined by the CFM and ESP requirements of the
applications. All units with belt-drive option have an adjustable
motor pulley to achieve the above conditions.
Electrical lines must be sized properly to carry the load. USE
COPPER CONDUCTORS ONLY. Each unit must be wired with
a separate branch circuit fed directly from the meter panel and
properly protected.
All direct-drive units are shipped with the black wire (labeled
#8) connected to the high speed tap on the blower motor. If a
lower blower speed is desired, this wire should be moved to the
medium or low speed tap on the motor.
CAUTION: When connecting electrical power and control wir-
ing to the unit, waterproof type connectors MUST
BE USED so that water or moisture cannot be
drawn into the unit during normal operation. The
above waterproofing conditions will also apply
when installing a field-supplied disconnect switch.
DISCONNECT SWITCH BRACKET FOR UNITS
WITH OPTIONAL BELT-DRIVE BRACKET
A special bracket for mounting a field-supplied disconnect
switch is provided in each unit ordered with an optional
belt-drive supply air blower. The bracket is shipped inside the
blower compartment taped to the top of the blower housing.
Install the bracket on the left hand side of the unit as shown in
Refer to Figure 3 for typical field wiring and to the appropriate
unit wiring diagram for control circuit and power wiring
information. Refer to Tables 9 and 10 for electrical data.
4
Unitary Products Group
511.06-N5Y
ELECTRIC HEATERS
TABLE 2 - AIR FLOW LIMITATIONS
NOMINAL
HEATER
SIZE
UNIT MODEL SIZE, NOMINAL TONS
Supplemental electric heaters may be ordered as a
field-installed accessory. Refer to Form 530.18-N7.1V for
installation instruction. These UL and C.G.A.approved heaters
are located within the central compartment of the unit (see
Figure 6 for access panel) with the heating elements extending
into the supply air chamber.
VOLTAGE1
3
4
5
MINIMUM SUPPLY AIR CFM
KW
5
7
10
15
20
30
5
7
10
15
20
30
1,100
1,100
1,200
1,200
1,3002
–
1,300
1,300
1,300
1,300
1,3002
–
1,600
1,600
1,600
1,600
1,600
1,600
208 /
230-1-60
Fuses are supplied, where required, by the factory. Some KW
sizes require fuses and others do not. Refer to the electric
heater accessory installation instruction for the heater electrical
data.
1,100
1,100
1,200
1,200
1,3002
–
1,300
1,300
1,300
1,300
1,300
–
1,600
1,600
1,600
1,600
1,600
1,600
208 /
230-3-60
The minimum air flow limitations across these heaters are listed
in Table 2.
7
1,100
1,200
1,200
1,300
–
1,200
1,200
1,300
–
1,300
1,300
1,300
1,300
–
1,300
1,300
1,400
–
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,600
1,800
10
15
20
30
10
15
20
30
460-3-60
575-3-60
1208/230 and 460 volt heaters are UL approved.
208/230 and 575 volt heaters are CGA approved.
2
CGA minimum is 1,400 CFM.
CONTROL WIRING
124-volt thermostat with subbase;
-2TH11704024 for manual changeover.
-2TH11704124 for automatic changeover.
Only required on units with supplemental electric heat.
2
TO REMOTE SENSOR
2TH04702224 IF USED
1Electronic progammable thermostat 2ET04700324 with subbase for either
manual or automatic changeover.
2
Only required on units with economizer. Remove jumper L2 from terminals
4 and 9 on jumper plug P7. The outdoor air intake dampers will return to their
fully closed position when the thermostat switches to the “unoccupied” mode.
Second stage cooling may be used on units with economizer. Remove jumper
3
J1 from terminals 8 and 10 on jumper plug connector P7.
Only required on units with supplemental electric heat.
4
POWER WIRING
REFER TO ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, THE WIRING AND THE
OVERCURRENT PROTECTION.
REFER TO ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, THE WIRING AND THE
OVERCURRENT PROTECTION.
FIG. 3 - TYPICAL FIELD WIRING
Unitary Products Group
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511.06-N5Y
OPTIONAL ECONOMIZER RAIN HOOD
flange and tighten. Attach the two side plates to the unit
panel by using two self-drilling screws for each side plate
at dimples (D) provided in the panel.
The following procedure should be used when assembling an
economizer rain hoodontoaunit.RefertoFigure4.Theoutdoor
and return air dampers, damper actuator, the linkage and all
the controls are factory mounted as part of the economizer
option.
6. Position fillpiece at bottom of hood, between the two side
plates but do not secure at this time. (Slotted openings
MUST be downward for drainage).After fillpiece is properly
positioned, note where contact is made with the unit panel.
Remove fillpiece and apply gasket material to this area to
provide a seal. Reposition fillpiece and secure with 2
screws.
All of the hood components, including the filters, the gasketing
and the hardware for assembling are locatedabove thetop filter
racks within the filter section. The outdoor air sensor is in the
bag of parts located at the bottom of the return air section.
1. With filter section access panel removed, take out hood
components, filters and sensor described above. Remove
and discard outdoor air opening cover on back unit (Upper
right hand corner).
7. Install the two filters into the hood assembly, sliding down
along retainers on side plates, into fillpiece at bottom of
hood.
2. Remove the 1/2" knockout (A) in the units rear panel
(located to the right side of the outdoor air opening). Insert
the two loose wires from inside the unit, into the 1/2"
bushing provided. Insert wires and bushing into knockout.
Snap bushing into place.
NOTE: Install filters so that "Air Flow" arrows point toward the
unit.
8. Install filter cover over the end of the hood with one screw
(center of hood), securing filters into position.
3. Mount the outdoor air sensor to the rear panel, just below
the knockout described in Step 2.Secure with two self-drill-
ing screws at dimples (B) provided in the panel.
CAUTION: When proceeding with steps 9 and 10, extreme
care must be exercised while turning both the set
point and minimum position adjusting screws to
prevent twisting them off.
NOTE: Sensor must be positioned so that the sensing ports
are at the top (louvers pointing downward) and terminal
connections to the right.
9. The enthalpy set point for the dampers may now be set by
selecting the desired set-point from graph in Figure 5. For
a single enthalpy economizer, carefully turn the set-point
adjusting screw to the "A", "B", "C" or "D" setting corre-
sponding to the lettered curve. For a dual enthalpy econo-
mizer, carefully turn the set-point adjusting screw fully
clockwise past the "D" setting.
4. Connect the two wires, indicated in Step 2, to the sensor as
follows:
• Wire #73 to terminal (+)
• Wire #74 to terminal (S)
10. To check that the damper blades move smoothly without
binding, carefully turn the minimum position adjusting
screw fully clockwise and then energize and de-energize
terminals "R" to "G". With terminals "R" to "G" energized,
turn the minimum position screw counterclockwise until the
desired minimum position has been attained.
5. Assemble the LH and RH side plates to the top cover (2
screws each side) to form the hood. Apply gasketing to the
flange surface on each side plate. Extend gasketing 1/4"
beyond top and bottom of each flange to insure adequate
corner sealing. Secure this assembly to the unit back panel
(upper right hand corner). First, remove screw (C) on unit
top cover. Then slip flange of hood cover in under flange of
unit top cover, replace screw (C), engaging hole (E) in hood
11. Replace the filter section access panel.
OUTDOOR AIR
OPENING COVER
C
HOOD
COVER
FILTER
COVER
D
D
OUTDOOR AIR
SENSOR
D
E
GASKETED
A
FLANGE
GASKET
B
D
L. H. SIDE
PLATE
FILTER SECTION
ACCESS PANEL
GASKETED
FLANGE
FILTERS
SIDE DUCT
APPLICATION SHOWN
R. H.
SIDE
PLATE
FILLPIECE
FIG. 4 - ECONOMIZER RAIN HOOD ASSEMBLY (OPTION)
6
Unitary Products Group
511.06-N5Y
FIG. 5 - ENTHALPY SET POINT ADJUSTMENT
TABLE 3 - PHYSICAL DATA
BCH
048
WEIGHTS (LBS)
3 Ton
MODELS
036
060
555
12 x 10 12 x 10
Basic Unit
4 Ton
5 Ton
595
620
CENTRIFUGAL BLOWER (Dia. x Wd. in.)
SUPPLY AIR
12 x 10
1
1.5
3
15
5.1
1
3
FAN MOTOR HP (Direct-Drive Units)
BLOWER
⁄
⁄
2
1.5
4
1.5
FAN MOTOR HP (Belt-Drive Units)
OPTIONS / ACCESSORIES
5 - 7 KW
ROWS DEEP
4
16
4.3
3
15
5.1
18
23
28
50
5
INDOOR
Electric Heat
(Nominal KW)
FINS PER INCH
COIL
10 - 15 KW
20 - 30 KW
FACE AREA (Sq. Ft.)
22
22
24
PROPELLER DIA. (in.)
OUTDOOR
Economizer
Belt-Drive Blower
Motorized Outdoor
Air Damper
Barometric Relief/Fixed
1
1
1
FAN MOTOR HP
FAN
⁄
3
⁄
2
⁄
2
NOM. CFM TOTAL
4,300
4,200
4,500
ROWS DEEP
1
20
1
20
1
20
17.1
2
1
26
OUTDOOR
FINS PER INCH
COIL
FACE AREA (Sq. Ft.)
17.1
17.1
10
92
Outdoor Air Intake Damper
Roof Mounting Curb
AIR
FILTERS
(SEE NOTE)
QUANTITY PER UNIT (15" x 20" x 1")
QUANTITY PER UNIT (14" X 25" X 1")
TOTAL FACE AREA (sq. ft.)
2
1
6.3
2
1
6.3
6.3
CHARGE
REFRIGERANT 22 (lbs./oz.)
7/12
1
8/4
1
8/4
1
COMPRESSOR HERMETIC, RECIPRICATING (Qty)
NOTE: Filter racks are adapted for 1" or 2" thick filters.
Unitary Products Group
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511.06-N5Y
(Direct-Drive Units)
FIELD-SUPPLIED
DISCONNECT SWITCH
BLOWER
ACCESS
LOCATION
FILTER ACCESS
CONTROL
BOX ACCESS
OUTDOOR
COIL
COMPRESSOR
ACCESS
325⁄8
FRONT VIEW
ELECTRIC
HEAT
ACCESS
821⁄4
3⁄4“ PVC FEMALE
COND. DRAIN
(See Detail ”A")
21⁄2
447⁄8
A, B
WIRING ENTRY
(See Detail “B”)
DUCT COVERS - Units are shipped with all air duct
openings covered.
For side duct applications;
1.Remove and discard the supply and return air duct
covers.
111⁄2
2.Connect ductwork to duct flanges on the rear of the
unit.
For bottom duct applications;
1. Remove the side supply air duct cover to gain
access to the bottom supply air knockout panel.
2. Remove and discard the bottom knockout panel.
3. Replace the side duct cover.
4. With filter section access panel removed from the
unit, remove and discard the bottom return air
knockout panel.
171⁄2
53⁄8
61⁄2
171⁄2
81⁄8
63⁄4
77⁄8
UNIT BASE WITH RAILS
BOTTOM SUPPLY &
RETURN AIR OPENINGS
(SEE NOTE)
Shown separately to illustrate bottom
duct openings and power connection
locations.
NOTE: For curb-mounted units, refer to the duct
hanger dimensions of the curb for the proper size
of the supply and return air duct connections.
B - POWER WIRING ENTRY
A - CONTROL WIRING ENTRY
5. Replace the filter access panel.
83⁄8
CLEARANCES
Front
24"
12" (Less Economizer)
36" (With Economizer or
Fixed Air/Motorized
Damper)
All dimensions are in inches. They are sub-
ject to change without notice. Certified di-
mensions will be provided upon request.
111⁄2
Back
3
111⁄2
Left Side
(Filter Access)
Right Side (OD Coil)
Below Unit1
Above Unit2
24" (Less Economizer)
36" (With Economizer)
24"
20"
72" (For Outdoor Air
Discharge)
UTILITIES ENTRY DATA
KNOCKOUT
45⁄8
HOLE
SIZE
USED FOR
(DIA.)
Control Wiring
(Side or Bottom)**
Power Wiring
(Side or Bottom)
A
B
7/8" *
2" *
171⁄2
7
7
⁄
8
NOTE:
Units and ductwork are approved for zero clearance to combustible
materials when equipped with electric heaters.
61⁄2
171⁄2
REAR VIEW
SIDE SUPPLY AND RETURN
AIR OPENINGS
*Knockouts in the bottom of the unit can be located
by the slice in the insulation.
1
Units may be installed on combustible floors made from wood or
class A, B or C roof covering material. (Applicable in USA only).
Units must be installed oudoors. Overhanging structures or shrubs
should not obstruct the outdoor coil nor the fan outlet.
**Do not remove the 2" knockout ring.
2
AIR FLOW LEGEND
RETURN AIR
SUPPLY AIR
307⁄8
3
⁄ “ CONDENSATE
4
DRAIN
101⁄4
(must be trapped)
271⁄2
OUTDOOR AIR
193⁄4
191⁄8
31⁄2
81⁄4
B
OUTDOOR AIR
(Economizer)
A
DIMENSION "A"
FIXED
OUTDOOR
AIR DAMPER
191⁄2
447⁄8
447⁄8
DETAIL “B”
12
"A"
43⁄8
DETAIL “A”
MOTORIZED
DAMPER
1
16 ⁄
UNIT WITH ECONOMIZER RAIN HOOD
2
UNIT WITH FIXED OUTDOOR
AIR/MOTORIZED DAMPER RAIN HOOD
FIG. 6 - DIMENSIONS & CLEARANCES - 3, 4 & 5 TONS
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Unitary Products Group
511.06-N5Y
TABLE 4 - SUPPLY AIR PERFORMANCE - 3 & 4 Ton Units w/Belt-Drive Blower
3 TON - SIDE DUCT CONNECTIONS @230/460/575 Volts
Available External Static Pressure - IWG*
MODEL AIR FLOW
0.20
0.30
0.40
0.50
0.60
0.70
0.80
BCH
CFM
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
2000
1900
1800
1700
1600
1500
1400
1300
1200
843
817
790
-
-
-
-
-
-
860
775
700
-
-
-
-
-
-
880
854
828
802
-
-
-
-
-
925
850
760
670
-
-
-
-
-
919
893
867
840
818
-
-
-
-
1005
920
840
745
665
-
-
-
-
956
930
906
881
858
842
833
-
1065
995
905
815
740
695
650
-
993
970
944
920
898
882
867
858
847
1145
1065
980
900
820
755
705
665
640
1030
1008
985
961
940
922
904
893
880
1195
1125
1040
970
890
835
765
725
680
1067
1046
1025
1001
980
962
942
932
916
1235
1170
1100
1030
950
895
820
785
730
036
-
-
Available External Static Pressure - IWG*
1.10 1.20 1.30
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
MODEL AIR FLOW
0.90
1.00
1.40
1.50
BCH
CFM
2000
1900
1800
1700
1600
1500
1400
1300
1200
1103
1085
1064
1040
1020
1003
982
1270
1210
1145
1075
1005
945
880
835
780
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1102
1081
1060
1044
1024
1010
992
1180
1115
1050
995
920
870
815
1121
1100
1086
1067
1053
1034
1140
1085
1035
965
920
855
036
-
1107
1099
1080
1000
960
905
970
953
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
*INCLUDES ALLOWANCES FOR A WET INDOOR COIL AND 1" FILTERS. REFER TO TABLE 7 FOR RESISTANCE VALUES ON APPLICATIONS OTHER THAN HEAT PUMP UNITS
WITH SIDE DUCT AIRFLOWS.
4 TON - SIDE DUCT CONNECTIONS @ 230/460/575 Volts
Available External Static Pressure - IWG*
MODEL AIR FLOW
0.20
0.30
0.40
0.50
0.60
0.70
0.80
BCH
CFM
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
2000
1900
1800
1700
1600
1500
1400
1300
1200
843
817
790
-
-
-
-
-
-
860
775
700
-
-
-
-
-
-
880
854
828
802
-
-
-
-
-
925
850
760
670
-
-
-
-
-
919
893
867
840
818
-
-
-
-
1005
920
840
745
665
-
-
-
-
956
930
906
881
858
842
833
-
1065
995
905
815
740
695
650
-
993
970
944
920
898
882
867
858
847
1145
1065
980
900
820
755
705
665
640
1030
1008
985
961
940
922
904
893
880
1195
1125
1040
970
890
835
765
725
680
1067
1046
1025
1001
980
962
942
932
916
1235
1170
1100
1030
950
895
820
785
730
048
-
-
Available External Static Pressure - IWG*
1.10 1.20 1.30
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
MODEL AIR FLOW
0.90
1.00
1.40
1.50
BCH
CFM
2000
1900
1800
1700
1600
1500
1400
1300
1200
1103
1085
1064
1040
1020
1003
982
1270
1210
1145
1075
1005
945
880
835
780
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1102
1081
1060
1044
1024
1010
992
1180
1115
1050
995
920
870
815
1121
1100
1086
1067
1053
1034
1140
1085
1035
965
920
855
048
-
1107
1099
1080
1000
960
905
970
953
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
*INCLUDES ALLOWANCES FOR A WET INDOOR COIL AND 1" FILTERS. REFER TO TABLE 7 FOR RESISTANCE VALUES ON APPLICATIONS OTHER THAN HEAT PUMP UNITS
WITH SIDE DUCT AIRFLOWS.
Unitary Products Group
9
511.06-N5Y
TABLE 5 - SUPPLY AIR PERFORMANCE - 5 Ton
w/Belt-Drive Blower
5 TON - SIDE DUCT CONNECTIONS @ 230/460/575 Volts
Available External Static Pressure - IWG*
0.40 0.50 0.60
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
MODEL AIR FLOW
0.20
0.30
0.70
0.80
BHN
CFM
2500
2400
2300
2200
2100
2000
1900
1800
1700
1600
1500
1059
1032
1005
980
930
877
-
-
-
-
-
1560
1405
1260
1160
1060
950
-
-
-
-
-
1077
1054
1024
1002
957
908
-
-
-
-
-
1590
1470
1275
1170
1070
975
-
-
-
-
-
1095
1074
1049
1022
983
941
894
855
-
1630
1525
1370
1190
1080
1000
885
815
-
1114
1094
1069
1044
1010
976
940
903
884
864
-
1650
1560
1440
1250
1100
1020
940
860
815
770
-
1134
1116
1090
1066
1039
1009
980
950
925
908
882
1660
1595
1475
1350
1160
1050
980
905
850
805
740
1158
1140
1116
1090
1064
1040
1014
988
1685
1620
1505
1410
1260
1100
1020
940
1181
1167
1142
1117
1092
1070
1047
1022
1001
987
1720
1640
1535
1440
1340
1225
1095
970
060
964
948
926
880
835
780
910
870
830
-
-
-
-
965
Available External Static Pressure - IWG*
1.10 1.20 1.30
RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts RPM Watts
MODEL AIR FLOW
0.90
1.00
1.40
1.50
BCH
CFM
2500
2400
2300
2200
2100
2000
1900
1800
1700
1600
1500
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1193
1170
1148
1121
1100
1079
1058
1035
1020
1004
1665
1580
1480
1385
1285
1180
1060
960
1202
1180
1155
1133
1110
1090
1071
1056
1038
1620
1530
1425
1340
1240
1135
1030
965
1190
1169
1143
1122
1103
1088
1070
1475
1385
1280
1190
1100
1035
925
-
060
1205
1178
1158
1134
1118
1101
1445
1330
1240
1140
1065
980
-
-
1222
1196
1164
1145
1130
1375
1295
1175
1105
1045
1197
1170
1158
1205
1130
1075
-
-
900
860
1198
1184
1150
1110
880
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
*INCLUDES ALLOWANCES FOR A WET INDOOR COIL AND 1" FILTERS. REFER TO TABLE 7 FOR RESISTANCE VALUES ON APPLICATIONS OTHER THAN HEAT PUMP UNITS
WITH SIDE DUCT AIRFLOWS.
TABLE 6 - SUPPLY AIR PERFORMANCE - 3, 4 & 5 Ton w/Direct-Drive Blower
230 / 460 / 575 VOLTS - SIDE DUCT APPLICATIONS
Available External Static Pressure - IWG*
MODEL
BCH
MOTOR
SPEED
0.20
CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts CFM Watts
1720 825 1665 795 1600 765 1540 735 1490 700 1380 670
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
HI
-
-
-
-
-
-
036
048
060
MED
LOW
HI
MED
LOW
HI
1660 850 1630 820 1590 780 1550 750 1500 720 1450 690 1400 665 1360 650 1270 610
1470 750 1440 725 1410 700 1370 675 1330 650 1290 625 1250 610 1220 600 1130 560
-
-
-
-
2000 1010 1950 975 1905 945 1840 910 1770 825 1660 825 1530 775
1810 910 1780 880 1740 850 1700 825 1665 800 1620 775 1560 740 1480 700 1390 660
1635 810 1610 780 1580 760 1555 740 1540 730 1510 715 1460 690 1400 660 1300 615
-
-
-
-
2500 1400 2420 1350 2340 1300 2260 1250 2160 1190 2060 1135 1925 1065
MED
LOW
2390 1350 2350 1300 2300 1255 2245 1210 2190 1165 2130 1120 2065 1075 1990 1030 1900 970
2270 1320 2230 1270 2190 1220 2145 1170 2090 1110 2030 1070 1960 1020 1890 970 1810 920
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
*INCLUDES ALLOWANCES FOR A WET INDOOR COIL AND 1" FILTERS. REFER TO TABLE 7 FOR RESISTANCE VALUES ON APPLICATIONS OTHER THAN HEAT PUMP UNITS
WITH SIDE DUCT AIRFLOWS.
TABLE 7 - STATIC RESISTANCES*
EXTERNAL STATIC PRESSURE DROP
RESISTANCE, IWG
DESCRIPTION
CFM
1800
0.13
0.08
0.11
0.10
1000
0.07
0.04
0.06
0.06
1200
0.08
0.05
0.07
0.07
1400
0.09
0.06
0.08
0.08
1600
0.11
0.07
0.09
0.09
2000
0.15
0.10
0.13
0.11
2200
0.17
0.12
0.15
0.12
2400
0.20
0.14
0.17
0.14
2600
0.23
0.16
0.20
0.16
Economizer1, 2
5 - 15 KW
20 - 30 KW
Electric Heaters1
Bottom Duct Connections1
1Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
2
The pressure thru the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than 0.25 IWG, the unit will deliver less CFM
during full economizer operation.
10
Unitary Products Group
511.06-N5Y
TABLE 8 - MOTOR AND DRIVE DATA w/Belt-Drive Blower
ADJUSTABLE
MOTOR PULLEY
FIXED
BLOWER PULLEY
MOTOR*
BELT
BLOWER
MODEL
RANGE
(RPM)
PITCH
BORE
DIA.
(in.)
PITCH
BORE
DIA.
(in.)
PITCH
LENGTH
(in.)
FRAME SERVICE
DESIG-
NATION
HP
RPM
SIZE
FACTOR
(in.)
(in.)
BCH 036
BCH 048
BCH 060
790 - 1120 1-1/2
790 - 1120 1-1/2
850 - 1220 1-1/2
1725
1725
1725
56
56
56
1.15
1.15
1.15
2.4 - 3.4
2.4 - 3.4
2.4 - 3.4
7/8
7/8
7/8
5.7
5.7
5.2
1
1
1
37.3
37.3
37.3
A36
A36
A36
*All motors have solid bases and are inherently protected. These motors can be selected to operate into their service factor because they are located in the moving air, upstream of any
heating device.
TABLE 9 - ELECTRICAL DATA w/Direct-Drive Blower Motor
VOLTAGE
LIMITATIONS
(SEE NOTE 1)
SUPPLY
AIR
BLOWER
MOTOR,
FLA
MAX.
FUSE
SIZE,
MAX.
HACR
BREAKER
SIZE,
OUTDOOR
FAN
MOTOR,
FLA
COMPRESSOR
MINIMUM
CIRCUIT
MODEL
BCH
POWER
SUPPLY
AMPACITY (SEE NOTE 2)
AMPS
MIN.
MAX.
RLA
LRA
AMPS
208/230-1-60
208/230-3-60
460-3-60
187
187
414
518
187
187
414
518
187
187
414
518
253
253
504
630
253
253
504
630
253
253
504
630
19.0
11.9
5.9
105
85
42
1.7
1.7
1.0
1.0
2.3
2.3
1.4
1.4
2.3
2.3
1.4
1.4
4.4
4.4
2.2
2.2
5.0
5.0
2.2
2.2
6.6
6.6
3.3
3.3
29.9
21.0
10.6
10.2
36.1
25.7
13.2
11.6
49.0
33.0
17.2
14.6
45
30
15
15
50
40
20
15
80
50
25
20
45
30
15
15
50
40
20
15
80
50
25
20
036
048
060
575-3-60
4.8
34
208/230-1-60
208/230-3-60
460-3-60
23.1
14.7
7.7
105
130
64
575-3-60
6.4
52
208/230-1-60
208/230-3-60
460-3-60
32.1
19.3
10.0
7.9
169
137
62
575-3-60
50
NOTES:
1. Rated in accordance wtih ARI Standard 110, utilizatin range "A".
2. Dual element, time delay type.
TABLE 10 - ELECTRICAL DATA w/Belt-Drive Blower Motor
VOLTAGE
SUPPLY
AIR
BLOWER
MOTOR,
FLA
MAX.
FUSE
SIZE,
MAX.
HACR
BREAKER
SIZE,
OUTDOOR
FAN
MOTOR,
FLA
LIMITATIONS
(SEE NOTE 1)
COMPRESSOR
MINIMUM
CIRCUIT
MODEL
BCH
POWER
SUPPLY
AMPACITY (SEE NOTE 2)
AMPS
MIN.
MAX.
RLA
LRA
AMPS
208/230-1-60
208/230-3-60
460-3-60
187
187
414
518
187
187
414
518
187
187
414
518
253
253
504
630
253
253
504
630
253
253
504
630
19.0
11.9
5.9
105
85
42
1.7
1.7
1.0
1.0
2.3
2.3
1.4
1.4
2.3
2.3
1.4
1.4
5.3
5.3
3.1
3.1
8.6
5.2
2.6
2.0
8.6
6.0
3.0
2.4
34.8
21.9
11.5
11.1
39.7
25.9
13.6
11.4
51.0
32.4
16.9
13.7
45
30
15
15
50
40
20
15
80
50
25
20
45
30
15
15
50
40
20
15
80
50
25
20
036
048
060
575-3-60
4.8
34
208/230-1-60
208/230-3-60
460-3-60
23.1
14.7
7.7
105
130
64
575-3-60
6.4
52
208/230-1-60
208/230-3-60
460-3-60
32.1
19.3
10.0
7.9
169
137
62
575-3-60
50
NOTES:
1. Utilization Range “A” in accordance with ARI Standard 110.
2. Dual element, time delay type.
Unitary Products Group
11
511.06-N5Y
OPERATION
COOLING SYSTEM
250
The unit has an air-cooled condenser and is factory-charged
with Refrigerant-22.
200
150
100
T3 - 110 Minute Setting (Factory Set Point)
T2 - 80 Minute Setting
The compressor is hermetically sealed, internally sprung,
mounted on spring isolators and inherently (internally)
protected. If there is an abnormal temperature rise in the
compressor, the protector will open to shut down the
compressor.
PRELIMINARY OPERATION COOLING
50
0
After the installation has been completed, the crankcase heater
of the compressor must be energized for at least 4 hours before
starting the unit. After this initial warm-up, the compressor
should be given three false starts (energized just long enough
to make a few revolutions) with a 5 minute delay between each
start before being put into full time service.
T1 - 50 Minute Setting
60
20
40
50
10
0
30
-10
OUTDOOR AMBIENT, DEG. F
FIG. 7 - DEFROST INITIATION TIMES
NOTE: Prior to each cooling season, the crankcase heater
must be energized at least 10 hours before the system
is put into operation.
EXAMPLE: If the time is factory set on pin T-3 (110 minutes at
35°F outdoor) and the outdoor temperature climbs to 45°F, th e
time initiation cycle will decrease to every 100 minutes.
COOLING SEQUENCE OF OPERATION
If the outdoor temperature drops to 10°F where ice is less likely
to form, the 110 minute interval will extend to every 150
minutes.
When the thermostat calls for cooling, the compressor and the
outdoor fan motor will be energized through terminal "Y1" and
the supply air blower motor will be energized through terminal
"G" (if the fan switch on the subbase is set in the "AUTO"
position). The supply air blower motor will run continuously if
the fan switch is set in the "ON" position.
Two requirements must be met before a defrost cycle can be
initiated.
1. The defrost time cycle must be complete.
The reversing valve is energized thru the "O" circuit when the
subbase is in the cooling mode.
2. The liquid line temperature must be less than 28°F.
HEATING SEQUENCE OF OPERATION
Defrost will terminate when the liquid line sensor reaches 55°F
or after 10 minutes.
The following sequence of operation is based on using a
standard YORK heat pump thermostat with two heating stages.
The defrost time cycle will restart 10 minutes after the start of
the defrost cycle even though the liquid sensor terminated
defrost after 3 minutes.
FIRST STAGE HEAT
When the thermostat calls for heating, the compressor and the
outdoor fan motor will be energized through terminal "Y1" and
the supply air blower motor will be energized through terminal
"G" (if the fan switch on the subbase is set in the "AUTO"
position). The supply air blower motor will run continuously if
the fan switch is set in the "ON" position.
During troubleshooting, the defrost time can be reduced to 20
seconds by shorting out the SW1 test pegs on the module.The
pegs are 1/2" long, 3/16" apart and are mounted on a white
base. See Figure 8.
SECOND STAGE HEAT
T2 - 80 MINUTE SETTING
T3 - 110 MINUTE SETTING
If compressor operation can not satisfy the heating
requirements, second stage heat will energize supplemental
electric heat (if supplied) thru the "W1" circuit.
(Factory Set Point)
T1 - 50 MINUTE SETTING
DEFROST SEQUENCE OF OPERATION
SHORTING PEGS TO
OVERRIDE TIMER
FOR SERVICE
The BCH has a unique “ambient modified” time-temperature
defrost control that automatically adjusts to changes in the
outdoor temperature. The defrost control will shorten the
defrost initiation time periods above 35°F and will extend the
defrost initiation time periods below 35°F. The control is factory
set to defrost at 110 minutes (T3), but it can be field adjusted
to defrost at 80 minutes (T2) or 50 minutes (T1) in areas with
high humidity.
MOVABLE JUMPER
WIRE TO CHANGE
DEFROST TIMER
The curve in Figure 7 shows how defrost initiation times are
automatically compensated for changes in outdoor
temperature.
FIG. 8 - AMBIENT MODIFIED TIME/TEMPERATURE
CONTROL
12
Unitary Products Group
511.06-N5Y
OPTIONAL BELT-DRIVE BLOWER
LOCKOUT CONTROL
Any one of four conditions will put the system into a lock-out
condition during the heating or cooling mode:
All units with belt-drive blowers have single speed motors.The
variable pitch pulley on the blower motor can be adjusted to
obtain the desired supply air CFM. Refer to Table 8 for blower
motor drive data. The tension on the belts should be adjusted
as shown in Figure 9.
1.
The discharge line temperature reaches 255°F (215°F
reset) or,
2. The discharge pressure reaches 398 PSIG (310 PSIG
reset) or,
CAUTION
Procedure for adjusting belt tension:
1. Loosen nut (D) from the motor mount.
3.
The suction line freezestat equals 26°F (38°F reset) or,
2. Never loosen nuts (C) from each other while loosening nut (D).
3. Adjust the tension by turning bolt (B).
4. The low-pressure cut-out equals 7 PSIG (22 PSIG reset).
4. Do not loosen the four nuts (top and bottom) (A); unless additional tensioning
distance is required; immediately re-tighten these bolts if loosened.
5. Use a belt tension checker to apply a perpendicular force to one belt at the
midpoint of the span as shown. The deflection force should be applied
until a specific deflection distance of 4mm (5/32")is obtained. To determine
the deflection distance from normal position, use a straight edge from
sheave to sheave as a reference line. The recommended deflection force
is as follows:
A lock-out will energize the emergency heat light on the
thermostat andtheredLEDlightontheunitrelayboard.Turning
the thermostat switch to "Off" then back to "On", will reset the
system.
NOTICE TO OWNER:
SPAN LENGTH
DEFL FORCE
If a lockout occurs, check for the following problems before
calling a serviceman:
1. Dirty filters.
2. Snow accumulation.
3. Leaf or debris blockage.
(B)
(D)
(A)
(C)*
* NEVER LOOSEN
After eliminating the problem, attempt to restart the system as
follows:
Tension new belts at the max. deflection force recommended for the belt
section. Check the belt tension at least two times during the first 24 hours of
operation. Any re-tensioning should fall between the min. and max.
deflection force values.
• turn thesystem switchonthethermostattoits "OFF"position
for 10 seconds.
6. After adjusting, re-tighten nut (D) against the motor mount taking care not
to loosen nuts (C).
• turn it back to its original position.
If the unit doesn’t start, call a serviceman.
FIG. 9 - BELT ADJUSTMENT
NOTE: Models with an anti-recycle accessory will have a
5-minute delay before starting.
Start the supply air blower motor.Adjust the resistances in both
the supply and the return air duct systems to balance the air
distribution throughout the conditioned space. The job
specifications may require that this balancing be done by
someone other than the equipment installer.
CHECKING SUPPLY AIR CFM
The speed of the supply air blower will depend on the required
CFM, the unit accessories and the static resistances of both
the supply and the return air duct systems. With this
information, the speed for the supply air blower can be
To check the supply air CFM after the initial balancing has been
completed:
TABLE 11 - BELT-DRIVE SUPPLY AIR
Remove the (two) 5⁄16" dot plugs from the holes located on
the filter access panel side of the unit.
1.
MOTOR PULLEY ADJUSTMENT
BLOWER DRIVE RANGE (RPM)
TURNS
OPEN*
3 TON
4 TON
5 TON
2. Insert at least 8" of 1/4 inch tubing into each of these holes
for sufficient penetration into the air flow on both sides of
the indoor coil.
5
4
3
2
1
0
780
842
904
966
1028
1090
790
856
922
988
1054
1120
850
924
998
1072
1246
1220
NOTE: The tubes must be inserted and held in a position
perpendicular to the air flow so that velocity pressure
will not affect the static pressure readings.
*Pulley can be adjusted in half-turn increments.
3. Using an inclined manometer, determine the pressure drop
across a dry indoor coil. Since the moisture on an indoor
coil may vary greatly, measuring the pressure drop across
a wet coil under field conditions would be inaccurate. To
ensure a dry coil, the compressors should be de-energized
while the test is being run.
determined from the blower performance and static resistance
data on Tables 4 through 7.
Knowing the required blower RPM and the blower motor HP,
the speed setting for the supply air motor can be determined.
The setting (turns open) for the optional belt-drive supply air
pulley can be determined from Table 11.
4. Knowing the pressure drop across a dry coil, the actual CFM
through the unit can be determined from the curve in Figure 10.
Unitary Products Group
13
511.06-N5Y
0.5
0.4
0.3
0.2
0.1
0
WARNING:Failure to properly adjust the total system air quan-
tity can result in poor system performance.
060
048
036
After readings have been obtained, remove the tubes and seal
the drilled holes in the side panels. 5/16" dot plugs (P/N
029-13880) are available through normal parts ordering
procedures.
NOTE: DE-ENERGIZE THE COMPRESSORS BEFORE
TAKING ANY TEST MEASUREMENTS TO ENSURE
A DRY INDOOR COIL.
1000
1500
2000
NOMINAL CFM
2500
3000
FIG. 10 - PRESSURE DROP ACROSS A DRY INDOOR
COIL VS. SUPPLY AIR CFM
SECURE OWNER’S APPROVAL: When the system is functioning properly, secure the owner’s approval. Show him the location
of all disconnect switches and the thermostat. Teach him how to start and stop the unit and how to adjust temperature settings
within the limitations of the system.
MAINTENANCE
NORMAL MAINTENANCE
CAUTION: Prior to any of the following maintenance proce-
dures, shut off all power to the unit to prevent
personal injury.
OUTDOOR COIL - Dirt should not be allowed to accumulate
on the outdoor coil surface or other parts in the air circuit.
Cleaning should be as often as necessary to keep coil clean.
Use a brush, vacuum cleaner attachment, or other suitable
means. If water is used to clean coil, be sure power to the unit
is shut off prior to cleaning.
FILTERS - Inspect once a month. Replace disposable or clean
permanent type as necessary. DO NOT replace permanent
type with disposable.
NOTE: Exercise care when cleaning the coil so that the coil
fins are not damaged.
MOTORS - Indoor fan and outdoor fan motors are permanently
lubricated and require no maintenance.
Do not permit the outdoor air discharge to be ob-
structed by overhanging structures of shrubs.
14
Unitary Products Group
511.06-N5Y
Unitary Products Group
15
208/230/575 VOLT
MODELS ONLY
208/230/460 VOLT
MODELS ONLY
Unitary Products Group
5005 York Drive, Norman, Oklahoma 73069
Subject to change without notice. Printed in U.S.A.
Copyright by York International Corporation 2000. All Rights Reserved.
511.06-N5Y
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