INSTALLATION INSTRUCTIONS
WALL MOUNTED
P ACKAGE AIR CONDITIONERS
MODELS
W17A2 W17L2
W18A2 W18L2
W24A2 W24L2
W30A2 W30L2
W36A2 W36L2
W42A2 W42L2
W48A2 W48L2
W60A2 W60L2
W70A2 W70L2
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual : 2100-581B
Supersedes: 2100-581A
File: Volume III Tab 16
Date: 11-25-13
Manual 2100-581B
Page 1 of 26
Contents
Getting Other Information and Publications 3
Wall Mount General Information
Wall Mount Model Nomenclature
Shipping Damage
General .................................................................4
Duct Work
Filters .................................................................5
Fresh Air Intake
Condensate Drain
Installation Instructions
Wall Mounting Information
Mounting the Unit
Clearances Required
Minimum Clearances
Wiring – Main Power
Wiring – Low Voltage Wiring
Figures
Figure 1 Fresh Air Damper Assembly .....................5
Figure 2 Unit Dimensions .......................................7
Figu r e 3 A Mounting Instructions ...............................8
Figure 3B Mounting Instructions - W17 – 36 ................9
Figure 3C
Figure 4 Electric Heat Clearance ......................... 11
Figure 5 Wall Mounting Instructions .....................12
Figure 6 Wall Mounting Instructions .....................12
Figure 7 Common Wall Mounting Installations .....13
Figure 8 Fan Blade Setting ...................................18
.................................................................5
Mounting Instructions - W42, 48, 60, 70 ....10
.....................................................4
.........................................................5
....................................................5
......................................................6
................................................6
................................................6
...............................................14
..............................4
........................................6
...................................14
Start Up
General ...............................................................15
Topping Off System Charge
Safety Practices
Important Installer Note
High Pressure Switch
Three Phase Scroll Compressor
Phase Monitor
Condenser Fan Operation
Service Hints
Sequence of Operation
Compressor Control Module
Adjustments
Pressure Service Ports
Troubleshooting
Fan Blade Setting Dimensions
R-410A Refrigerant Charge
Removal of Fan Shroud
Tables
Table 1 Fan Blade Dimensions ...........................18
Table 2 Cooling Pressure ....................................19
Table 3 Electrical Specications W**A ................20
Table 4 Electrical Specications W**L ................21
Table 5 Recommended Airow ...........................22
Table 6 Indoor Blower Performance ...................22
Table 7 Maximum ESP Electric Heat Only ..........22
Table 8 Electric Heat ...........................................23
Table 9A Optional Accessories — Right Hand ......24
Table 9B Optional Accessories — Left Hand ............25
Table 10 Vent & Control Options ...........................26
......................................................15
.........................................................16
...........................................................16
............................................................17
....................................15
...........................................16
..............................................16
.............................16
......................................16
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...................................17
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................................18
....................................18
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Manual 2100-581B
Page 2 of 26
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help you install the air
conditioner or heat pump. You can usually nd these
at your local library or purchase them directly from the
publisher. Be sure to consult current edition of each
standard.
National Electrical Code .......................ANSI/NFPA 70
Standard for the Installation ............... ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for W arm Air .......................ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for ......................... ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential ...............ACCA Manual D
Winter and Summer Air Conditioning and Equipment
Selection
FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: (202) 483-9370
Fax: (202) 234-4721
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
ASHRAE American Society of Heating, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
Manual 2100-581B
Page 3 of 26
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
W 42 A 2 – A 10 X X X X X A
MODEL NUMBER
CAPACITY
17 - 1½ Ton
18 - 1½ Ton
24 - 2 Ton
30 - 2
½ T on
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton
70 - 6 Ton
NOTE: Vent options X, B and M are without exhaust capability. May require separate eld supplied barometric relief in building.
A - Right Hand Air Conditioner
L - Left Hand Air Conditioner
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate
M - Motorized Fresh Air Damper
V - Commercial Ventilator - Motorized with Exhaust
R - Energy Recovery Ventilator - Motorized with Exhaust
(See Spec. Sheet S3397)
S - Economizer - S
W - Economizer - Equipment Building
T - Economizer - Equipment Building
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
REVISIONS
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
chool Versions, Enthalpy
, Enthalpy
, DB Temp.
KW
COLOR OPTIONS
X - Beige (Standard)
1 - White
4 - Buckeye Gray
5 - Desert Brown
6 - Dark Bronze
A - Aluminum
S - Stainless Steel
FILTER OPTIONS
X - One Inch Throwaway (Standard)
W - One Inch Washable
P - T wo Inch Pleated
OUTLET OPTIONS
X - Front (Standard)
T - Top Outlet (W30A, W36A Only)
These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly “Starting
Procedure” and any tags and/or labels attached to the
equipment.
CONTROL MODULES
(See Spec. Sheet S3397)
COIL OPTIONS
X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
and Condenser
While these instructions are intended as a general
GENERAL
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.
These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.
recommended guide, they do not supersede any
national and/or local codes in any way. Authorities
having jurisdiction should be consulted before the
installation is made. See Page 3 for information on
codes and standards.
Size of unit for a proposed installation should be based
on heat loss calculation made according to methods
of Air Conditioning Contractors of America (ACCA).
The air duct should be installed in accordance with the
Standards of the National Fire Protection Association
for the Installation of Air Conditioning and Ventilating
Systems of Other Than Residence Type, NFPA No.
90A, and Residence Type Warm Air Heating and Air
Conditioning Systems, NFPA No. 90B. Where local
regulations are at a variance with instructions, installer
should adhere to local codes.
Manual 2100-581B
Page 4 of 26
DUCT WORK
FILTERS
All duct work, supply and return, must be properly sized
for the design airow requirement of the equipment.
Air Conditioning Contractors of America (ACCA) is an
excellent guide to proper sizing. All duct work or portions
thereof not in the conditioned space should be properly
insulated in order to both conserve energy and prevent
condensation or moisture damage.
Refer to Maximum ESP of operation Electric Heat Table 7.
Design the duct work according to methods given by the Air
Conditioning Contractors of America (ACCA). When duct
runs through unheated spaces, it should be insulated with a
minimum of one inch of insulation. Use insulation with a
vapor barrier on the outside of the insulation. Flexible joints
should be used to connect the duct work to the equipment in
order to keep the noise transmission to a minimum.
Models W17 - W24 as approved for zero inch clearance to
the supply duct. For model series W30, W36, W42, W48,
W60 and W70 a 1/4 inch clearance to combustible material
for the rst three feet of duct attached to the outlet air frame
is required. See Wall Mounting Instructions and Figures 3
and 4 for further details.
Ducts through the walls must be insulated and all joints taped
or sealed to prevent air or moisture entering the wall cavity.
Some installations may not require any return air duct. A
metallic return air grille is required with installations not
requiring a return air duct. The spacing between louvers on
the grille shall not be larger than 5/8 inch.
Any grille that meets with 5/8 inch louver criteria may be
used. It is recommended that Bard Return Air Grille Kit
RG2 through RG5 or RFG2 through RFG5 be installed
when no return duct is used. Contact distributor or factory
for ordering information. If using a return air lter grille,
lters must be of sufcient size to allow a maximum
velocity of 400 fpm.
A 1-inch throwaway lter is standard with each unit.
The lter slides into position making it easy to service.
This lter can be serviced from the outside by removing
the lter access panel. A 1-inch washable lter and
2-inch pleated lter are also available as optional
accessories. The internal lter brackets are adjustable
to accommodate the 2-inch lter by bending two (2)
tabs down on each side of the lter support bracket.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service door.
If the unit is equipped with a fresh air damper assembly,
the assembly is shipped already attached to the unit.
The damper blade is locked in the closed position.
To allow the damper to operate, the maximum and
minimum blade position stops must be installed. See
Figure 1.
All capacity, efciency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efciency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
CONDENSATE DRAIN
A plastic drain hose extends from the drain pan at
the top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected to a
drain system of some type, it must be an open or vented
type system to assure proper drainage.
NOTE: If no return air duct is used, applicable installation
codes may limit this cabinet to installation only in a
single story structure.
FIGURE 1
FRESH AIR DAMPER
Manual 2100-581B
Page 5 of 26
INSTALLATION INSTRUCTIONS
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure 3.
2. On wood frame walls, the wall construction must be
strong and rigid enough to carry the weight of the
unit without transmitting any unit vibration.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the
weight of the installed unit.
MOUNTING THE UNIT
WARNING
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the rst 3 feet of duct can result in
re causing damage, injury or death.
1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached
to skid for shipping, is provided for ease of
installation, but is not required.
2. The unit itself is suitable for 0 inch clearance,
but the supply air duct ange and the rst 3 feet
of supply air duct require a minimum of 1/4 inch
clearance to combustible material for model series
W30, W36, W42, W48, W60 and W70. However,
it is generally recommended that a 1-inch clearance
is used for ease of installation and maintaining the
required clearance to combustible material. See
Figure 3 for details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 3.
4. Mount bottom mounting bracket.
5. Hook top rain ashing, attached to front - right of
supply ange for shipping, under back bend of top.
Clearances Required for Service Access
and Adequate Condenser Airow
LEFT
MODELS
W17A, W18A, W24A, W30A, W36A 15" 20" 10'
W17L, W18L, W24L, W30L, W36L 20" 15" 10'
W42A, W48A, W60A, W70A 20" 20" 10'
W42L, W48L, W60L, W70L 20" 20" 10'
NOTE: For side by side installation of two (2) W**A models there
must be 20" between units. This can be reduced to 15" by using a
W**L model (left side compressor and controls) for the left unit and
WA (right side compressor and controls) for right unit.
See W**A Specication S3397 & W**L Specication S3400.
RIGHT
SIDE
SIDE
DISCHARGE
SIDE
6. Position unit in opening and secure with 5/16 lag
bolts; use 7/8 inch diameter at washers on the lag
bolts.
7. Secure rain ashing to wall and caulk across entire
length of top. See Figure 3.
8. For additional mounting rigidity, the return air
and supply air frames or collars can be drilled
and screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.
9. On side-by-side installations, maintain a minimum
of 20 inches clearance on right side to allow access
to control panel and heat strips, and to allow proper
airow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
Minimum Clearances Required to
Combustible Materials
MODELS
W17A, L / W18A, L / W24A, L 0" 0"
W30A, L / W36A, L 1/4" 0"
W42A, L / W48A, L
W60A, L / W70A, L
SUPPL Y AIR DUCT
FIRST THREE FEET
1/4" 0"
CABINET
Manual 2100-581B
Page 6 of 26
3"
11"
7.88
1.00
31.88
Heat
models.
Electric
Hood for
ECONWMT
MIS-2487 G
1
1
1
Condenser
Filter Access Panel
Front View
Air Outlet
Standard
flush vent
door for
non-ERV/
Econ.
models
Ventilation Air
5.88
F
W
G
Low Voltage
Electrical
Entrance
High Voltage
Side View
Drain
Electrical
Cond.
Air
Inlet
Heater
Access
Panel
4° Pitch
Built In
Rain Hood
Disconnect
Access Panel
(Lockable)
Entrance
C. Breaker/
Hood for ERV and
ECONWMS models
only
C
I
D
J
H
A
2.13
K
Mounting
Supply Air Opening
Side Wall
Brackets
Location
Shipping
Return Air Opening
(Built In)
Optional
Electrical
Entrances
Top Rain
Flashing
Bottom Installation
Bracket
Back View
P
M
O
E
R
S
S
S
S
S
T
.44
N
Q
B
L
FIGURE 2
Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)
MODEL
W17A, L
W18A, L
W24A, L
W30A, L
W36A, L
W42A, L
W48A, L
W60A, L
W70A, L
WIDTH
DEPTH
(W)
33.300 17.125 70.563 7.88 19.88 11.88 19.88 35.00 11.00 25.75 20.56 26.75 28.06 29.25 27.00 2.63 34.13 22.06 10.55 4.19 12.00 5.00
38.200 17.125 70.563 7.88 27.88 13.88 27.88 40.00 11.00 25.75 17.93 26.75 28.75 29.25 27.00 2.75 39.19 22.75 9.14 4.19 12.00 5.00
42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 13.63 31.66 30.00 32.68 26.94 34.69 32.43 3.37 42.88 23.88 10.00 1.44 16.00 1.88
HEIGHT
(D)
All dimensions are in inches. Dimensional drawings are not to scale.
W**A
RIGHT
UNIT
SUPPLY RETURN
(H)
A B C B E F G I J K L M N O P Q R S T
j Optional top outlet (factory installed only) for W30A and W36A models only.
W**L
LEFT
UNIT
Manual 2100-581B
Page 7 of 26
MIS-3157
WALL STRUCTURE
FOAM AIR SEAL
SUPPLIED
RAIN FLASHING
SEAL WITHBEAD
FIGURE 3A
OF CAULKING ALONG
TOP
ENTIRE LENGTH OF TOP.
WALL
MOUNTING INSTRUCTIONS
W17A2, W17L2, W18A2, W18L2, W24A2, W24L2
"7
1
16
DUCT
SUPPLY AIR
PANEL
HEATER ACCESS
8"
NOTES:
SILICONE CAULKING BE PLACED BEHIND
THE SIDEMOUNTING FLANGES AND UNDER
IT IS RECOMMENDED THAT A BEAD OF
RETURN AIR
OPENING
"
1
2
20
12"
1"
"
1
8
3
4"
Typ.
CONTROLS AND HEATER ACCESS
TOP FLASHING AT TIME OF INSTALLATION.
IS ON OPPOSITE (LEFT) SIDE.
W**A UNIT SHOWN,W**L UNIT
Manual 2100-581B
Page 8 of 26
20"
Supply Opening
"
1
16
7
"
13
16
3
12"
12"
20"
Return Opening
12"
12"
1"
3"
7
12"
4"
Typ.
"
8
2" 2"
Wall Opening andHole Location View Right Side View
5"
MIS-3158
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
1/4" CLEARANCE ONALL
MATERIALS
WALL STRUCTURE
FOAM AIR SEAL
SUPPLIED
RAIN FLASHING
SEAL WITHBEAD
FIGURE 3B
W30A2, W30L2, W36A2, W36L2
OF CAULKING ALONG
ENTIRE LENGTH OF TOP.
MOUNTING INSTRUCTIONS
EDCBA
17 5/83 11/165 3/88 3/8
TOP
16 7/84 7/164 5/89 7/829 7/8
SUPPLY AIR
DUCT
NOTES:
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
RETURN AIR
OPENING
TOP FLASHING AT TIME OF INSTALLATION.
THE SIDEMOUNTING FLANGES AND UNDER
W*R UNIT SHOWN,W*L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
Right Side View
PANEL
HEATER ACCESS
WALL
B
E
14"
"
7
8
"
11
16
REQUIRED DIMENSIONS TO MAINTAIN
28 3/8
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN
RECOMMENDED 1" CLEARANCE FROM
COMBUSTIBLE MATERIALS
C
A
C
4"
"
Typ.
1
8
3
"
7
28"
Supply Opening
D
12"
12"
Return Opening
12"
12"
8
"
7
8
2
"
7
8
12"
4"
Typ.
Wall Opening andHole Location View
" 4
11
16
"
1
4
16
5
Manual 2100-581B
Page 9 of 26
D
16"
16"
16"
16"
16"
1
7
8
"
6
1
2
" 6
1
2
"
2
1
8
"
7
8
"
1"
3"
4"
Typ.
4"
Typ.
6
1
2
"
30"
E
16"
A CC
3
1
8
"
B
Wall Opening and HoleLocation View
RETURN AIR
1
REQUIRED DIMENSIONSTO MAINTAIN
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONSTO MAINTAIN
29
DUCT
COMBUSTIBLE MATERIALS
A B C DE
30 1/2
10 1/2
6 1/4 11/4 29 3/4
32 12 5 1/2
2
NOTES:
WALL STRUCTURE
1
SUPPLY AIR
IT IS RECOMMENDED THAT A BEAD OF
OPENING
Right Side View
RAIN FLASHING
SILICONE CAULKING BE PLACED BEHIND
RECOMMENDED 1" CLEARANCE FROM
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
TOP.
PANEL
HEATER ACCESS
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
WALL
1/4" CLEARANCE ON ALL
MATERIALS
Supply Opening
FOAM AIR SEAL
SUPPLIED
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP
1
Return Opening
MIS-416 E
Dimension is 21" on 95" tall units.
2
Dimension is 10" on T48H1 & T60H1.
2
Dimension is 6" on T48H1 & T60H1.
3
3
FIGURE 3C
Manual 2100-581B
Page 10 of 26
MOUNTING INSTRUCTIONS
W42A2, W42L2, W48A2, W48L2, W60A2, W60L2, W70A2, W70L2
FIGURE 4
ELECTRIC HEAT CLEARANCE
W30A2, W30L2, W36A2, W36L2, W42A2, W42L2, W48A2, W48L2, W60A2, W60L2, W70A2, W70L2
NOTE 1: SIDE SECTION VIEW OF SUPPLY AIR
DUCT FOR WALL MOUNTED UNIT SHOWING 1/4
INCH CLEARANCE TO COMBUSTIBLE SURFACES.
WARNING
A minimum of 1/4 inch clearance must be maintained between
the supply air duct and combustible materials. This is required for
the rst 3 feet of ducting.
It is important to insure that the 1/4 inch minimum spacing is
maintained at all points.
Failure to do this could result in overheating the combustible
material and may result in a re causing damage, injury or death.
Manual 2100-581B
Page 11 of 26
FIGURE 5
DUCT
OPENING
RETURN AIR
SUPPLY AIR
WOOD FRAME WALL INSTALLATION
OPENING
WALL BEFORE
MOUNT ON UNIT
OPENING
BEFORE INSTALLATION
BOTTOM MOUNTING
CONCRETE BLOCKWALL INSTALLATION
BRACKET. MOUNT ON
OPENING
WOOD OR STEEL SIDING
OPENING
INSTALLING UNIT.
RETURN AIR
WALL STRUCTURE
RETURN AIR
SUPPLY AIR
FACTORY SUPPLIED
RAIN FLASHING.
SUPPLY AIR
MIS-548 A
SIDE VIEW
I
A
C
K
E + 1.000
B
1.000
SUPPLY DUCT
OVER FRAME
INTERIOR FINISHED WALL
ALL AROUND DUCT
FRAMING MATERIAL
EXTERIOR FINISH WALL
OPENING
FOR ACTUAL DIMENSIONS.
2 x 4'S, 2 x 6'S &/OR
STRUCTURAL STEEL
ATTACH TO TOP
1.000" CLEARANCE
1.000" CLEARANCE
PLATE OF WALL
C
SEE UNIT DIMENSIONS, FIGURE 2,
OPENING
RETURN DUCT
2 x 6
ATTACH TO BOTTOM
OVER FRAME
PLATE OF WALL
L
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
MIS-549 B
ALL AROUND DUCT
WALL MOUNTING INSTRUCTIONS
SEE FIGURE 3 – MOUNTING INSTRUCTIONS
FIGURE 6
WALL MOUNTING INSTRUCTIONS
Manual 2100-581B
Page 12 of 26
FIGURE 7
LOWERED
RAISED FLOOR
RAFTERS
SUPPLY AIR
CEILING SURFACE
WALL SLEEVE
RETURN AIR
CLOSET WALL
GRILLE
FLASHING
RETURN AIR
FLASHING
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
SURFACE
RAFTERS
FINISHED CEILING
SUPPLY AIR DUCT
WALL
OPENING W/ GRILLE
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
CEILING
RAIN
RETURN AIR
SLEEVE
WALL
SUPPLY AIR DUCT
RAFTERS
RAFTERS
RETURN AIR
OPENING W/ GRILLE
RAIN
FALSE WALL INSTALLATION
DUCTED SUPPLY
GRILLE
OUTSIDE
SPACE
FALSE WALL
RETURN AIR GRILLE
OUTSIDE
OR BELOW CEILING RAFTERS AS SHOWN
FINISHED CEILING SURFACE
RAIN
FLASHING
RAIN
FLASHING
RETURN ATUNITNO DUCT
WALL
SUPPLY AIR DUCT
CLOSET INSTALLATION
RETURN AIR
FINISHED
FINISHED CEILING SURFACE
MIS-550 B
FREE AIRFLOW
OUTSIDE
WALL
OUTSIDE
WALL
SUPPLY AIR DUCT
W/ GRILLE
COMMON WALL MOUNTING INSTALLATIONS
Manual 2100-581B
Page 13 of 26
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information
and maximum fuse or “HACR” type circuit breaker
size. Each outdoor unit is marked with a “Minimum
Circuit Ampacity”. This means that the eld wiring
used must be sized to carry that amount of current.
Depending on the installed KW of electric heat, there
may be two eld power circuits required. If this is the
case, the unit serial plate will so indicate. All models
are suitable only for connection with copper wire. Each
unit and/or wiring diagram will be marked “Use Copper
Conductors Only”. These instructions must be adhered
to. Refer to the National Electrical Code (NEC) for
complete current carrying capacity data on the various
insulation grades of wiring material. All wiring must
conform to NEC and all local codes.
The electrical data lists fuse and wire sizes (75° C
copper) for all models including the most commonly
used heater sizes. Also shown are the number of eld
power circuits required for the various models with
heaters.
The unit rating plate lists a “Maximum Time Delay
Relay Fuse” or “HACR” type circuit breaker that is to
be used with the equipment. The correct size must be
used for proper circuit protection and also to assure that
there will be no nuisance tripping due to the momentary
high starting current of the compressor motor.
WIRING – LOW VOLTAGE WIRING
All 230/208V, 1 phase and 3 phase equipment have
dual primary voltage transformers. All equipment
leaves the factory wired on 240V tap. For 208V
operation, reconnect from 240V to 208V tap. The
acceptable operating voltage range for the 240 and
208V taps are:
TAP RANGE
240 253 – 216
208 220 – 187
NOTE: Thevoltageshouldbemeasuredattheeld
power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).
For wiring size and connections, refer to Wiring
Manual 2100-507.
The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect. To
convert for the locking capability, bend the tab located
in the bottom left-hand corner of the disconnect
opening under the disconnect access panel straight
out. This tab will now line up with the slot in the door.
When shut, a padlock may be placed through the hole
in the tab preventing entry.
See “Start Up” section for important information on
three phase scroll compressor start ups.
See Tables 3 & 4 for Electrical Specications.
Manual 2100-581B
Page 14 of 26
START UP
THESE UNITS REQUIRE R-410A
REFRIGERANT AND POL YOL
ESTER OIL.
GENERAL:
1. Use separate service equipment to avoid cross
contamination of oil and refrigerants.
2. Use recovery equipment rated for R-410A
refrigerant.
3. Use manifold gauges rated for R-410A (800 psi/250
psi low).
4. R-410A is a binary blend of HFC-32 and HFC-125.
5. R-410A is nearly azeotropic - similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.
6. R-410A operates at 40-70% higher pressure than
R-22, and systems designed for R-22 cannot
withstand this higher pressure.
7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.
8. R-410A compressors use polyolester oil.
9. Polyol Ester oil is hygroscopic; it will rapidly
absorb moisture and strongly hold this moisture in
the oil.
10. A liquid line dryer must be used - even a deep
vacuum will not separate moisture from the oil.
11. Limit atmospheric exposure to 15 minutes.
12. If compressor removal is necessary, always plug
compressor immediately after removal. Purge with
small amount of nitrogen when inserting plugs.
TOPPING OFF SYSTEM CHARGE
If a leak has occurred in the system, Bard
Manufacturing recommends reclaiming, evacuating
(see criteria above), and charging to the nameplate
charge. If done correctly, topping off the system charge
can be done without problems.
With R-410A, there are no signicant changes in the
refrigerant composition during multiple leaks and
recharges. R-410A refrigerant is close to being an
azeotropic blend (it behaves like a pure compound
or single component refrigerant). The remaining
refrigerant charge, in the system, may be used after
leaks have occurred and then “top-off” the charge by
utilizing the pressure charts on the inner control panel
cover as a guideline.
REMEMBER: When adding R-410A refrigerant,
it must come out of the charging cylinder/tank as a
liquid to avoid any fractionation, and to ensure optimal
system performance. Refer to instructions for the
cylinder that is being utilized for proper method of
liquid extraction.
WARNING
Failure to conform to these practices
could lead to damage, injury or death.
SAFETY PRACTICES:
1. Never mix R-410A with other refrigerants.
2. Use gloves and safety glasses, Polyol Ester oils can
be irritating to the skin, and liquid refrigerant will
freeze the skin.
3. Never use air and R-410A to leak check; the
mixture may become ammable.
4. Do not inhale R-410A – the vapor attacks the
nervous system, creating dizziness, loss of
coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimate death
can result from breathing this concentration.
5. Do not burn R-410A. This decomposition
produces hazardous vapors. Evacuate the area if
exposed.
6. Use only cylinders rated DOT4BA/4BW 400.
7. Never ll cylinders over 80% of total capacity.
8. Store cylinders in a cool area, out of direct
sunlight.
9. Never heat cylinders above 125°F.
10. Never trap liquid R-410A in manifold sets, gauge
lines or cylinders. R-410A expands signicantly
at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.
Manual 2100-581B
Page 15 of 26
START UP (Continued)
IMPORTANT INSTALLER NOTE
For improved start up performance wash the indoor coil
with a dish washing detergent.
HIGH PRESSURE SWITCH
All W**A/W**L wall mounted air conditioner series
models are supplied with a remote reset for the high and
low pressure switch. If tripped, this pressure switch may
be reset by turning the thermostat off then back on again.
THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in
either direction depending upon phasing of the power.
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verication of proper rotation must be made.
Verication of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.
Verication of proper rotation must be made at the
time the equipment is put into service. If improper
rotation is corrected at this time, there will be no
negative impact on the durability of the compressor.
However, reverse operation for over one hour may have
a negative impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for an extended period of time, the
compressor’s internal protector will trip.
All three phase compressors are wired identically
internally. As a result, once the correct phasing
is determined for a specic system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
PHASE MONITOR
All units with three phase scroll compressors are
equipped with a 3 phase line monitor to prevent
compressor damage due to phase reversal.
The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct the green LED will light.
If phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit
factory wires as damage may occur.
CONDENSER FAN OPERATION
NOTE: Certain models may be equipped with a low
ambient control (LAC), and if so equipped, the
condenser fan motor will have delayed start
until system refrigerant operating pressure
builds up. After starting, the fan motor may
or may not cycle depending upon ambient
conditions. This is normal operation.
Applies to W42, W48, W60 and W70 models only. The
condenser fan motor on 230/208 volt, one and three
phase, 60 HZ units is a two-speed motor that comes
factory wired on high speed for peak performance. If
ambient conditions permit, it can be reconnected to
low speed (red wire) for lower sound level. See wiring
diagram.
50 HZ models must have fan wired on low speed.
These models are factory wired on low speed.
SERVICE HINTS
1. Caution owner/operator to maintain clean air
lters at all times. Also, not to needlessly close off
supply and return air registers. This reduces airow
through the system, which shortens equipment
service life as well as increasing operating costs.
2. Check all power fuses or circuit breakers to be sure
they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airow circulation is essential.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
Manual 2100-581B
Page 16 of 26
SEQUENCE OF OPERATION
COOLING – Circuit R-Y makes at thermostat pulling
in compressor contactor, starting the compressor and
outdoor motor. (See NOTE under Condenser Fan
Operation if equipped with Low Ambient Control.) The
G (indoor motor) circuit is automatically completed
by the thermostat on any call for cooling operation or
can be energized by manual fan switch on subbase for
constant air circulation. On a call for heating, circuit
R-W1 make at the thermostat pulling in heat contactor
for the strip heat and blower operation. On a call for
second stage heat, R-W2 makes bringing on second heat
contactor, if so equipped.
Alarm Relay Output
Alarm terminal is output connection for applications
where alarm relay is employed. This terminal is
powered whenever the compressor is locked out due to
HPC or LPC sequences as described.
NOTE: Both high and low pressure switch controls are
inherently automatic reset devices. The high
pressure switch and low pressure switch cut
outandcutinsettingsarexedbyspecicair
conditioner unit model. The lockout features,
both soft and manual, are a function of the
Compressor Control Module.
COMPRESSOR CONTROL MODULE
The compressor control module is standard on all
models covered by this manual. The compressor
control module is an anti-short cycle/lockout timer with
high and low pressure switch monitoring and alarm
relay output.
Adjustable Delay On Make And Break Timer
On initial power up or anytime power is interrupted to
the unit, the delay on make period begins, which will
be 2 minutes plus 10% of the delay on break setting.
When the delay on make is complete and the high
pressure switch and low pressure switch is closed, the
compressor contactor is energized. Upon shutdown, the
delay on break timer starts and prevents restart until the
delay on break and delay on make periods have expired.
During routine operation of the unit with no power
interruptions, the compressor will operate on demand
with no delay.
High Pressure Switch and Lockout Sequence
If the high pressure switch opens, the compressor
contactor will de-energize immediately. The lockout
timer will go into a soft lockout and stay in soft lockout
until the high pressure switch closes and the delay on
break time has expired. If the high pressure switch
opens again in this same operating cycle, the unit will
go into manual lockout condition and the alarm relay
circuit will energize. Recycling the wall thermostat
resets the manual lockout.
Low Pressure Switch, Bypass, and Lockout
Sequence
ADJUSTMENTS
Adjustable Delay on Make and Delay on Break
Timer
The potentiometer is used to select Delay on Break time
from 30 seconds to 5 minutes. Delay on Make (DOM)
timing on power-up and after power interruptions is
equal to 2 minutes plus 10% of Delay on Break (DOB)
setting:
0.5 minute (30 seconds) DOB = 123 second DOM
1.0 minute (60 seconds) DOB = 126 second DOM
2.0 minute (120 seconds) DOB = 132 second DOM
3.0 minute (180 seconds) DOB = 138 second DOM
4.0 minute (240 seconds) DOB = 144 second DOM
5.0 minute (300 seconds) DOB = 150 second DOM
During routine operation of the unit with no power
interruptions the compressor will operate on demand
with no delay.
Typical Settings for Dual Unit Installation:
Unit 1: DOB set at 2 minutes, and DOM is 132 seconds
Unit 2: DOB set at 4 minutes, and DOM is 144 seconds
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on
all units so that the system operating pressures can be
observed. A pressure table can be found later in the
manual covering all models. It is imperative to match
the correct pressure table to the unit by model number.
See T able 2.
If the low pressure switch opens for more than 120
seconds, the compressor contactor will de-energize
and go into a soft lockout. Regardless the state of the
low pressure switch, the contactor will reenergize after
the delay on make time delay has expired. If the low
pressure switch remains open, or opens again for longer
than 120 seconds, the unit will go into manual lockout
condition and the alarm relay circuit will energize.
Recycling the wall thermostat resets the manual lockout.
Manual 2100-581B
Page 17 of 26
TROUBLESHOOTING
FAN BLADE SETTING DIMENSIONS
Shown in Figure 8 is the correct fan blade setting for
proper air delivery across the outdoor coil. Refer to
Table 1 for unit specic dimension.
Any service work requiring removal or adjustment
in the fan and/or motor area will require that the
dimensions below be checked and blade adjusted in or
out on the motor shaft accordingly.
FIGURE 8
FAN BLADE SETTING
AIRFLOW
"A"
MIS-1724
R-410A
REFRIGERANT CHARGE
This unit was charged at the factory with the quantity of
refrigerant listed on the serial plate. AHRI capacity and
efciency ratings were determined by testing with this
refrigerant charge quantity.
The following pressure tables show nominal pressures
for the units. Since many installation specic situations
can affect the pressure readings, this information should
only be used by certied technicians as a guide for
evaluating proper system performance. They shall not
be used to adjust charge. If charge is in doubt, reclaim,
evacuate and recharge the unit to the serial plate charge.
REMOVAL OF FAN SHROUD
1. Disconnect all power to the unit.
2. Remove the screws holding both grilles, one on
each side of unit, and remove grilles.
3. Remove screws holding fan shroud to condenser
and bottom. Nine (9) screws.
4. Unwire condenser fan motor.
5. Slide complete motor, fan blade, and shroud
assembly out the left side of the unit.
TABLE 1
FAN BLADE DIMENSION
Model
W17A2 / W17L2
W18A2 / W18L2
W24A2 / W24L2
W30A2 / W30L2
W36A2 / W36L2
W42A2 / W42L2
W48A2 / W48L2
W60A2 / W60L2
W70A2 / W70L2
6. Service motor/fan as needed.
7. Reverse steps to reinstall.
Dimension
A
1.00"
1.25"
1.75"
Manual 2100-581B
Page 18 of 26
TABLE 2
COOLING PRESSURE TABLE
Air Temperature Entering Outdoor Coil °F
Model
W17A/L
W18A/L
W24A/L
W30A/L
W36A/L
W42A/L
W48A/L
W60A/L
W70A/L
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon rated CFM (airow) across the evaporator coil. If there is any doubt as to correct operating charge
being in the system, the charge should be removed, system evacuated and recharged to serial plate charge weight.
NOTE:
Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check
condenser fan wiring. See “Condenser Fan Operation”.
Return Air Temp
(DB/WB)
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
75/62
80/67
85/72
Pressure 75 80 85 90 95 100 105 110 115 120
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
Low Side
High Side
124
321
133
329
138
341
127
318
136
326
141
337
119
340
127
349
131
361
122
335
130
344
135
356
120
339
128
348
132
360
123
320
132
328
137
339
117
355
125
364
129
377
122
346
131
355
136
367
118
349
126
358
130
371
126
340
135
349
140
361
129
339
138
348
143
360
121
361
129
370
134
383
124
358
133
367
138
380
122
366
130
375
135
388
124
342
133
351
138
363
119
378
127
388
131
402
124
371
133
380
138
393
121
371
129
381
134
394
128
362
137
371
142
384
131
362
140
371
145
384
122
383
131
393
136
407
127
381
136
391
141
405
124
392
133
402
138
416
126
367
135
376
140
389
121
403
129
413
134
427
126
396
135
406
140
420
122
395
131
405
136
419
130
384
139
394
144
408
133
385
142
395
147
409
124
407
133
417
138
432
129
406
138
416
143
431
126
418
135
429
140
444
128
391
137
401
142
415
123
427
132
438
137
453
128
421
137
432
142
447
123
419
132
430
137
445
132
409
141
419
146
434
135
409
144
419
149
434
127
432
136
443
141
459
131
431
140
442
145
457
129
446
138
457
143
473
130
416
139
427
144
442
125
454
134
466
139
482
130
447
139
458
144
474
125
444
134
455
139
471
133
434
142
445
147
461
137
434
146
445
151
461
129
459
138
471
143
487
133
456
142
468
147
484
130
473
139
485
144
502
132
443
141
454
146
470
127
482
136
494
141
511
131
473
140
485
145
502
127
470
136
482
141
499
135
461
144
473
149
490
138
459
148
471
153
487
131
488
140
500
145
518
135
483
144
495
149
512
132
501
141
514
146
532
134
469
143
481
148
498
129
510
138
523
143
541
133
499
142
512
147
530
129
497
138
510
143
528
137
490
146
503
151
521
140
486
150
498
155
515
133
518
142
531
147
550
137
509
146
522
151
540
134
529
143
543
148
562
136
496
145
509
150
527
131
539
140
553
145
572
135
526
144
539
149
558
131
525
140
538
145
557
138
521
148
534
153
553
143
513
153
526
158
544
135
550
144
564
149
584
137
536
147
550
152
569
135
558
144
572
149
592
137
526
147
539
152
558
133
570
142
585
147
605
137
553
146
567
151
587
132
553
141
567
146
587
140
553
150
567
155
587
145
541
155
555
160
574
137
583
146
598
151
619
139
565
149
579
154
599
136
586
145
601
150
622
139
554
149
568
154
588
135
603
144
618
149
640
138
580
148
595
153
616
134
583
143
598
148
619
Manual 2100-581B
Page 19 of 26
TABLE 3
Electrical Specications — W**A Series
No.
Field
Power
Circuits
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1
1
1
1
1 or 2
1 or 2
1
1
1
1
1
1
1
1
1
1
1 or 2
1 or 2
1
1
1
1
1
1
1
1
1
1
1 or 2
1 or 2
1
1
1
2
1
1
1
1
1
1
1 or 2
1 or 2
1
1
1
2
1
1
1
Minimum
Circuit
Ampacity
16
30
46
56
21
25
30
46
56
15
22
9
11
24
32
47
58
84
18
24
33
51
11
12
17
26
29
32
47
58
84
23
24
33
51
11
12
16
26
32
32
58
84
110
24
33
51
60
12
17
26
39
39
58
84
110
27
33
51
60
13
17
26
42
42
60
86
112
28
35
53
N/A
15
18
27
56
56
59
85
111
38
38
53
N/A
19
19
27
A05
A08
A10
A04
A05
A08
A10
B06
C06
A05*
A08
A10*
A15
B06
B09*
B15
C06
C09*
C15
A05*
A08
A10*
A15
B06*
B09*
B15
C06*
C09*
C15
A05
A10
A15
A20
B09
B15
B18
C09
C15
A05
A10
A15
A20
B09
B15
B18
C09
C15
A05
A10
A15
A20
B09
B15
B18
C09
C15
A05
A10
A15
A20
B09
B15
B18
C09
C15
Rated
Volts &
Phase
230/208-1
230/208-1
230/208-3
460-3
230/208-1
230/208-3
460-3
230/208-1
230/208-3
460-3
230/208-1
230/208-3
460-3
230/208-1
230/208-3
460-3
230/208-1
230/208-3
460-3
230/208-1
230/208-3
460-3
MODEL
W17, 18A2-A00,A0Z
W24A2-A00, A0Z
W24A2-B00, B0Z
W24A2-C00, C0Z
W30A2-A00*, A0Z*
W30A2-B00*, B0Z*
W30A2-C00*, C0Z*
W36A2-A00*, A0Z*
W36A2-B00*, B0Z*
W36A2-C00*, C0Z*
W42A2-A00, A0Z
W42A2-B00, B0Z
W42A2-C00, C0Z
W48A2-A00, A0Z
W48A2-B00, B0Z
W48A2-C00, C0Z
W60A2-A00, A0Z
W60A2-B00, B0Z
W60A2-C00, C0Z
W70A2-A00, A0Z
W70A2-B00, B0Z
W70A2-C00, C0Z
j Maximum size of the time delay fuse or HACR type circuit breaker for protection of eld wiring conductors.
Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.
These “Minimum Circuit Ampacity” values are to be used for sizing the eld power conductors. Refer to the National Electrical code (latest version), Article 310 for power conductor sizing.
Caution: When more than one eld power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310 regarding Ampacity
Adjustment Factors when more than three (3) current carrying conductors are in a raceway.
* Top outlet supply option is available only factory installed and only on the selected models.
IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the National
Electrical Code and all local codes.
Manual 2100-581B
Page 20 of 26
Single Circuit Dual Circuit
26
52
26
52
26
52
26
52
j Maximum
External Fuse
or Ckt. Breaker
60
30
60
60
60
30
60
60
60
30
60
60
60
30
60
60
j
Maximum
External
Fuse or
Ckt. Brkr.
20
30
50
60
30
30
30
50
60
20
25
15
15
35
35
50
60
90
20
25
35
60
15
15
20
30
35
35
50
60
90
30
30
35
60
15
15
20
30
50
50
60
90
125
35
35
60
60
15
20
30
50
50
60
90
125
40
40
60
60
20
20
30
60
60
60
90
125
40
40
60
N/A
20
20
30
60
60
60
90
125
60
60
60
N/A
30
30
35
Field
Power
Wire
Size
12
10
8
6
10
10
10
8
6
12
10
14
14
8
8
8
6
4
12
10
8
6
14
14
12
10
8
8
8
6
4
10
10
8
6
14
14
12
10
8
8
6
4
2
8
8
6
6
14
12
10
8
8
6
4
2
8
8
6
6
12
12
10
8
8
6
3
2
8
8
6
N/A
12
12
10
6
6
6
4
2
8
8
6
N/A
10
10
18
Minimum
Ground
Wire
12
10
10
10
10
10
10
10
10
12
10
14
14
10
10
10
10
8 58 26 60 30
12
10
10
10
14
14
12
10
10
10
10
10
8 58 26 60 30 6 10 10 10
10
10
10
10
14
14
12
10
10
10
10
8
6
10
10
10
10
14
12
10
10
10
10
8
6
10
10
10
10
12
12
10
10
10
10
8
6
10
10
10
N/A 35 28 40 30 8
12
12
10
10
10
10
8
6
10
10
10
N/A 38 28 60 30 8 10 10 10
10
10
10
Circuit
Ampacity
Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B
58
58
58
58
60
60
59
59
Field Power
Wire Size
6 10 10 10
6
10
6
6
6
10
6
6
6
10
6
6
10 10 10
6
10
6
6
Ground
Wire Size
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
TABLE 4
Electrical Specications — W**L Series
No.
Field
Power
Circuits
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1 or 2
1
1
1
1
1
1
1
1 or 2
1
1
1
1
Minimum
Circuit
Ampacity
16
30
46
56
21
30
46
56
15
22
9
11
24
32
47
58
84
18
33
51
11
17
26
29
32
58
84
23
33
51
11
16
26
32
32
58
84
24
33
51
12
17
26
39
39
58
84
27
33
51
13
17
26
42
42
60
86
28
35
53
15
18
27
56
56
59
85
38
38
53
19
19
27
A05
A08
A10
A05
A08
A10
B06
C06
A05*
A08
A10*
A15
B09*
B15
C09*
C15
A05*
A10*
A15
B09*
B15
C09*
C15
A05
A10
A15
B09
B15
C09
C15
A05
A10
A15
B09
B15
C09
C15
A05
A10
A15
B09
B15
C09
C15
A05
A10
A15
B09
B15
C09
C15
Rated
Volts &
Phase
230/208-1
230/208-1
230/208-3
460-3
230/208-1
230/208-311
460-3
230/208-1
230/208-311
460-3
230/208-1
230/208-311
460-3
230/208-1
230/208-311
460-3
230/208-1
230/208-311
460-3
230/208-1
230/208-311
460-3
MODEL
W17, 18L2-A00,A0Z
W24L2-A00, A0Z
W24L2-B00, B0Z
W24L2-C00, C0Z
W30L2-A00*, A0Z*
W30L2-B00*, B0Z*
W30L2-C00*, C0Z*
W36L2-A00*, A0Z*
W36L2-B00*, B0Z*
W36L2-C00*, C0Z*
W42L2-A00, A0Z
W42L2-B00, B0Z
W42L2-C00, C0Z
W48L2-A00, A0Z
W48L2-B00, B0Z
W48L2-C00, C0Z
W60L2-A00, A0Z
W60L2-B00, B0Z
W60L2-C00, C0Z
W70L2-A0Z
W70L2-B0Z
W70L2-C0Z
j Maximum size of the time delay fuse or HACR type circuit breaker for protection of eld wiring conductors.
Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.
These “Minimum Circuit Ampacity” values are to be used for sizing the eld power conductors. Refer to the National Electrical code (latest version), Article 310 for power conductor sizing.
Caution: When more than one eld power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310 regarding Ampacity
Adjustment Factors when more than three (3) current carrying conductors are in a raceway.
* Top outlet supply option is available only factory installed and only on the selected models.
IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the National
Electrical Code and all local codes.
Single Circuit Dual Circuit
j
Maximum
External
Fuse or
Ckt. Brkr.
20
30
50
60
30
30
50
60
20
25
15
15
35
35
50
60
90
20
35
60
15
20
30
35
35
60
90
30
35
60
15
20
30
50
50
60
90
35
35
60
15
20
30
50
50
60
90
40
40
60
20
20
30
60
60
60
90
40
40
60
20
20
30
60
60
60
90
60
60
60
30
30
35
Field
Power
Wire
Size
12
10
8
6
10
10
8
6
12
10
14
14
8
8
8
6
4
12
8
6
14
12
10
8
8
6
4
10
8
6
14
12
10
8
8
6
4
8
8
6
14
12
10
8
8
6
4
8
8
6
12
12
10
8
8
6
3
8
8
6
12
12
10
6
6
6
4
8
8
6
10
10
18
Minimum
Ground
Wire
12
10
10
10
10
10
10
10
12
10
14
14
10
10
10
10
8 58 26 60 30 6 10 10 10
12
10
10
14
12
10
10
10
10
8 58 26 60 30 6 10 10 10
10
10
10
14
12
10
10
10
10
8 58 26
10
10
10
14
12
10
10
10
10
8 58 26 60 30 6 10 10 10
10
10
10
12
12
10
10
10
10
8 60 26 60 30 6 10 10 10
10
10
10
12
12
10
10
10
10
8 59 26 60 30 6 10 10 10
10
10
10
10
10
10
Circuit
Ampacity
Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B
j Maximum
External Fuse
or Ckt. Breaker
60 30 6 10 10 10
Field Power
Wire Size
Ground
Wire Size
Manual 2100-581B
Page 21 of 26
TABLE 5
RECOMMENDED AIRFLOW
Model
Nominal
Rated
CFM *
Nominal
Rated
ESP *
Recommended
Airow Range
Factory Speed
Connection
W17A, W17L 600 .40 550 - 725 Low
W18A, W18L 550 .45 550 - 725 Low
W24A, W24L 800 .30 700 - 950 Single
W30A, W30L 1000 .30 850 - 1300 High
W36A, W36L 1100 .20 930 - 1350 High
W42A, W42L 1400 .45 1600 - 1150 High
W48A, W48L 1550 .30 1750 - 1285 High
W60A, W60L 1700 .40 1950 - 1375 High
W70A, W70L 1700 .20 1950 - 1375 High
* Rated CFM and ESP on factory speed connection.
TABLE 6
INDOOR BLOWER PERFORMANCE
Speed
ESP
(Inch
H20)
0.0
0.1
0.2
0.3
0.4
0.5
W17/18 W24 W30 W36 W42/48 W60 W70
High Low Single High Low High Low High Low High Low High Low
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
1045 1025 760 745 990 970 1370 1285 910 885 1415 1275 955 925 1850 1800 1605 1555 2080 2015 1505 1460 2050 1845 1490 1400
1010 970 730 715 945 925 1305 1225 885 860 1350 1215 945 915 1775 1725 1545 1500 2020 1960 1450 1405 1970 1770 1425 1340
940 905 700 685 890 870 1225 1135 850 815 1265 1125 925 900 1685 1640 1460 1415 1925 1865 1395 1355 1905 1700 1375 1295
860 830 670 655 820 800 1115 1020 790 755 1190 1060 875 850 1590 1550 1390 1345 1870 1815 1340 1300 1830 1645 1225 1150
780 750 610 595 735 720 1005 910 695 660 1085 975 780 755 1495 1460 1310 1270 1755 1705 1225 1185 1725 1550 1140 1070
665 640 485 455 605 590 865 775 590 560 970 865 640 615 1400 1365 1225 1185 1660 1610 1125 1085 1500 1350 1050 985
Coil
Dry
Coil
Wet
Coil
Dry
Coil
Wet
Coil
TABLE 7
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
Model
Outlet FRONT FRONT TOP FRONT FRONT
Speed Single High Low High Low High Low High Low
-A0Z
-A04
-A05
-A08
-A10
-A15
-A20
-B0Z
-B06
-B09
-B15
-B18
-C0Z
-C06
-C09
-C15
Values shown are for units equipped with standard 1-inch throwaway lter or 1-inch washable lter.
Derate ESP by .15 for 2-inch pleated lters.
W17A/L,
W18A/L,
W24A/L
.50
.50
.50
.50
.50
.50
.50
.50
.50
.40
.50
.50
.50
.45
.50
.50
.50
.45
W30A/L, W36A/L W42A/L, W48A/L W60A/L, W70A/L
.50
.50
.50
.50
.50
.45
.50
.50
.50
.50
.50
.50
.50
.45
.35
.50
.50
.50
.35
.50
.50
.50
.50
.50
.50
.50
.45
.50
.50
.50
.50
.50
.40
.50
.30
.50
.45
.50
.40
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.40
.35
.45
.40
.50
.50
.50
.50
.50
.50
.50
.50
.50
.50
.40
.50
.50
.50
.50
.50
.50
.50
Manual 2100-581B
Page 22 of 26
TABLE 8
ELECTRIC HEAT
Models 240V-1 208V-1 240V-3 208V-3 460V-3
KW Amps BTUH Amps BTUH Amps BTUH Amps BTUH Amps BTUH
4 16.7 13650 14.4 10240
5 20.8 17065 18.1 12800
6 14.4 20500 12.5 15360 7.2 20500
8 33.3 27300 28.8 20475
9 21.7 30600 18.7 23030 10.8 30700
10 41.6 34130 36.2 25600
12 14.4 40950
15 62.5 51250 54.0 38400 36.2 51200 31.2 38400 18.0 51200
18 43.3 61430 37.5 46100
20 83.2 68260 72.1 51200
Manual 2100-581B
Page 23 of 26
OPTIONAL ACCESSORIES — RIGHT HAND
-A
-B
A2
A2
W24
W24
W17/18A2-A
EHWA02-A05 X X
EHW02A-A08 X X
EHWA02A-A10 X X
EHWA24-A04 X
EHWA24-B06 X
EHWH24B-C06 X
EHWA03-A05 X X
EHWA03-A08 X X
EHWA03-A10 X X
EHWA03-A15 X X
EHWA03-B06 X
EHW36A-B06 X
EHWA03-B09 X X
EHWA37-B15 X X
EHWC03A-C06 X X
EHWC03A-C09 X X
EHWA03A-C12 X X
EHWA03A-C15 X X
HEATER KITS
CIRCUIT BREAKER (WMCB) &
EHWA05-A05 X X
EHWA05-A10 X X X X
EHWA05-A15 X X X X
EHWA05-A20 X X X X
EHWA05-B09 X X
EHWA05-B15 X X X X
EHW05A-B18 X
EHWA05-B18 X X
EHWA05A-C09 X X X X
EHWA05A-C15 X X X X
EHWA60-A05 X X
EHW60A-B09 X
EHW70A-B09 X
EHW70A-B18 X
WMCB-01B X
WMCB-02A X
WMCB-02B X
WMCB-03A X
WMCB-04B X
WMCB-05A X X
WMCB-05B X X
WMCB-06B X
WMCB-08A X X
WMCB-09A X X
WMPD-01C X X X X X X X
PULL DISCONNECT (WMPD)
WMCB-08B X
-C
A2
W24
TABLE 9A
-A
-B
A2
A2
W30
W30
-C
A2
W30
-A
A2
W36
-B
A2
W36
-C
A2
W36
-A
A2
W42
-B
A2
W42
-C
A2
W42
-A
A2
W48
-B
A2
W48
-C
A2
W48
-A
A2
W60
-B
A2
W60
-C
A2
W60
-A
A2
W70
-B
A2
W70
-C
A2
W70
Manual 2100-581A
Page 24 of 26
OPTIONAL ACCESSORIES — LEFT HAND
-A
L2
W17/18L2-A
W24
EHWA02A-A05L X X
EHW02A-A08L X X
EHWA02-A10L X X
EHWA24-B06L X
EHWA03-A05L X X
EHWA03-A08L X
EHWA03-A10L X X
EHWA03-A15L X X
EHWA03-B09L X X
EHWA37-B15L X X
EHWC03-C09L X X
EHWA03-C15L X X
EHWA05-A05L X X X
HEATER KITS
CIRCUIT BREAKER (WMCB) &
EHWA05-A10L X X X X
EHWA05-A15L X X X X
EHWA05-B09L X X
EHWA05-B15L X X X X
EHWA05A-C09L X X X X
EHWA05A-C15L X X X X
EHWA60-A05L X
EHWA60-B09L X
EHW70A-B09L X
WMCB-01B X
WMCB-02A X
WMCB-02B X
WMCB-03A X
WMCB-04B X
WMCB-05A X X
WMCB-05B X X
WMCB-06B X
WMCB-08A X X
WMCB-09A X X
WMPD-01C X X X X X X
PULL DISCONNECT (WMPD)
WMCB-09B X
-B
L2
W24
TABLE 9B
-A
-B
L2
L2
W30
W30
-C
L2
W30
-A
L2
W36
-B
L2
W36
-C
L2
W36
-A
L2
W42
-B
L2
W42
-C
L2
W42
-A
L2
W48
-B
L2
W48
-C
L2
W48
-A
L2
W60
-B
L2
W60
-C
L2
W60
-A
L2
W70
-B
L2
W70
-C
L2
W70
Manual 2100-581B
Page 25 of 26
TABLE 10
VENT & CONTROL OPTIONS
Part Number Description
CMC-14 ODT X X X
CMC-15 Start Kit (230V 1-Phase) X X X
CMC-23 DDC X X
CMC-24 DDC X
CMC-28 LAC X X X
BFAD-2 Barometric Fresh Air Damper - Standard X
BOP-2 Blank Off Plate X
MFAD-2 Motorized Fresh Air Damper X
CRV-2 Commercial Ventilator - Spring Return X
ECONWMS-E2
ECONWMT-E2
ECONWMT-T2
ERVF-A2 Energy Recovery Ventilator - 230 Volt X
ERVF-C2 Energy Recovery Ventilator - 460 Volt X
BFAD-3 Barometric Fresh Air Damper - Standard X
BOP-3 Blank Off Plate X
MFAD-3 Motorized Fresh Air Damper X
CRVS-3 Commercial Ventilator - Spring Return X
CRVP-3 Commercial Ventilator - Power Return X
ECONWMS-E3
ECONWMT-E3
ECONWMT-T3
ERVF-A3 Energy Recovery Ventilator - 230 Volt X
ERVF-C3 Energy Recovery Ventilator - 460 Volt X
BFAD-5 Barometric Fresh Air Damper - Standard X
BOP-5 Blank Off Plate X
MFAD-5 Motorized Fresh Air Damper X
CRVS-5 Commercial Ventilator - Spring Return X
CRVP-5 Commercial Ventilator - Power Return X
ECONWMS-E5
ECONWMT-E5
ECONWMT-T5
ERVF-A5 Energy Recovery Ventilator - 230 Volt X
ERVF-C5 Energy Recovery Ventilator - 460 Volt X
Economizer - School Version, Enthalpy
Economizer - Bldg. Equipment, Enthalpy
Economizer - Bldg. Equipment, DB Temp.
Economizer - School Version, Enthalpy
Economizer - Bldg. Equipment, Enthalpy
Economizer - Bldg. Equipment, DB Temp.
Economizer - School Version, Enthalpy
Economizer - Bldg. Equipment, Enthalpy
Economizer - Bldg. Equipment, DB Temp.
W17, W18, W24
W30, W36
X
X
X
X
X
X
W42, W48, W60, W70
X
X
X
Manual 2100-581B
Page 26 of 26
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