Bard w17a2 User Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE 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.	Manual :	2100-581B
	Bryan, Ohio 43506	Supersedes:	2100-581A
	Since 1914...Moving ahead just as planned.	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...............................	4
Shipping Damage......................................................	4
General ..................................................................	4
Duct Work..................................................................	5
Filters ..................................................................	5
Fresh Air Intake.........................................................	5
Condensate Drain .....................................................	5
Installation Instructions
Wall Mounting Information.........................................	6
Mounting the Unit......................................................	6
Clearances Required.................................................	6
Minimum Clearances.................................................	6
Wiring – Main Power...............................................	14
Wiring – Low Voltage Wiring....................................	14

Figures
Figure 1	Fresh Air Damper Assembly.....................	5
Figure 2	Unit Dimensions........................................	7
Figure 3A	Mounting Instructions................................	8
Figure 3B	Mounting Instructions - W17 – 36.................	9
Figure 3C	Mounting Instructions - W42, 48, 60, 70.....	10
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

Start Up
General ................................................................	15
Topping Off System Charge....................................	15
Safety Practices.......................................................	15
Important Installer Note...........................................	16
High Pressure Switch..............................................	16
Three Phase Scroll Compressor.............................	16
Phase Monitor.........................................................	16
Condenser Fan Operation.......................................	16
Service Hints...........................................................	16
Sequence of Operation............................................	17
Compressor Control Module....................................	17
Adjustments.............................................................	17
Pressure Service Ports............................................	17
Troubleshooting
Fan Blade Setting Dimensions................................	18
R-410A Refrigerant Charge.....................................	18
Removal of Fan Shroud...........................................	18

Tables
Table	1	Fan Blade Dimensions............................	18
Table	2	Cooling Pressure....................................	19
Table	3	Electrical Specifications W**A.................	20
Table	4	Electrical Specifications W**L.................	21
Table	5	Recommended Airflow............................	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		OptionalAccessories — Left Hand.............	25
Table	10	Vent & Control Options...........................	26

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 find 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 Warm 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: [phone]
	Fax: [phone]

ANSI	American National Standards Institute
	11 West Street, 13th Floor
	New York, NY 10036
	Telephone: [phone]
	Fax: [phone]

ASHRAE American Society of Heating, Refrigeration

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305

Telephone: [phone]

Fax: [phone]

NFPA	National Fire Protection Association
	Batterymarch Park
	P.O. Box 9101
	Quincy, MA 02269-9901
	Telephone: [phone]
	Fax: [phone]

Manual	2100-581B
Page	3 of 26

WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

W 42 A 2 – A 10

MODEL NUMBER

CAPACITY

17- 1½ Ton

18- 1½ Ton

24- 2 Ton

30- 2½ Ton

36- 3 Ton

42- 3½ Ton

48- 4 Ton

60- 5 Ton

70- 6 Ton

REVISIONS

KW

VOLTS & PHASE

A - 230/208/60/1

B - 230/208/60/3

C - 460/60/3

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 - School Versions, Enthalpy

W - Economizer - Equipment Building, Enthalpy

T - Economizer - Equipment Building, DB Temp.

X

X

X

X

X

A

CONTROL MODULES

(See Spec. Sheet S3397)

COIL OPTIONS

COLOR OPTIONS

X - Standard

X - Beige (Standard)

1

- Phenolic Coated Evaporator

1

- White

2 - Phenolic Coated Condenser

4

- Buckeye Gray

3 - Phenolic Coated Evaporator

5

- Desert Brown

and Condenser

6

- Dark Bronze

OUTLET OPTIONS

A - Aluminum

S - Stainless Steel

X - Front (Standard)

T - Top Outlet (W30A, W36A Only)

FILTER OPTIONS

X

- One Inch Throwaway (Standard)

W - One Inch Washable

P

- Two Inch Pleated

NOTE: Vent options X, B and M are without exhaust capability. May require separate field supplied barometric relief in 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.

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.

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.

While these instructions are intended as a general 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

All duct work, supply and return, must be properly sized for the design airflow 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 first 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 filter grille, filters must be of sufficient size to allow a maximum velocity of 400 fpm.

FILTERS

A 1-inch throwaway filter is standard with each unit. The filter slides into position making it easy to service. This filter can be serviced from the outside by removing the filter access panel. A 1-inch washable filter and 2-inch pleated filter are also available as optional accessories. The internal filter brackets are adjustable to accommodate the 2-inch filter by bending two (2) tabs down on each side of the filter 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, efficiency and cost of operation information is based upon the fresh air blank-off plate in place and is recommended for maximum energy efficiency.

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

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 flange and the first 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 flashing, attached to front - right of supply flange for shipping, under back bend of top.

Clearances Required for Service Access and Adequate Condenser Airflow

	MODELS	LEFT	RIGHT	DISCHARGE
		SIDE	SIDE	SIDE
	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 Specification S3397 & W**L Specification S3400.

WARNING

Failure to provide the 1/4 inch clearance between the supply duct and a combustible surface for the first 3 feet of duct can result in fire causing damage, injury or death.

6.Position unit in opening and secure with 5/16 lag bolts; use 7/8 inch diameter flat washers on the lag bolts.

7.Secure rain flashing 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 airflow to the outdoor coil. Additional clearance may be required to meet local or national codes.

Minimum Clearances Required to Combustible Materials

	MODELS	SUPPLY AIR DUCT	CABINET
		FIRST THREE FEET
	W17A, L / W18A, L / W24A, L	0"	0"
	W30A, L / W36A, L	1/4"	0"
	W42A, L / W48A, L	1/4"	0"
	W60A, L / W70A, L

Manual	2100-581B
Page	6 of 26

FIGURE 2

Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)

	MODEL	WIDTH	DEPTH	HEIGHT	SUPPLY		RETURN
		(W)	(D)	(H)	A	B	C	B	E	F	G	I	J	K	L	M	N	O	P	Q	R	S	T
	W17A, L
	W18A, L	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
	W24A, L
	W30A, L	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
	W36A, L
	W42A, L
	W48A, L	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
	W60A, L
	W70A, L

All dimensions are in inches. Dimensional drawings are not to scale.

			Built In	D				E
				1				O
W**A			Rain Hood	7.88
								31.88 1
			4° Pitch			1
RIGHT	W		Heater		1.00				.44
UNIT			Access		2.13
			Panel				Side Wall	Supply Air Opening		R
			Electric		A
			Heat				Mounting
			C. Breaker/				Brackets
							(Built In)			S
			Disconnect					B
		Access Panel			I		Top Rain
			(Lockable)
		Hood for ERV and					Flashing			S
		ECONWMS models					Shipping
		only					Location
5.88	Filter Access Panel				C	H	Optional	Return Air Opening
		Standard	3"				Electrical			S
F	Ventilation Air	flush vent					Entrances
		door for
		non-ERV/
		Econ.								S
		models	11"
					K
G	Condenser	Hood for	Low Voltage	Cond.			L
					J
			Electrical
	Air Outlet	ECONWMT	Entrance	Air			M			S
		models.	High Voltage	Inlet			P
			Electrical
			Entrance							T
	Front View			Side View	Drain		N	Back View	Bottom Installation
							Q		Bracket	MIS-2487 G

jOptional top outlet (factory installed only) for W30A and W36A models only.

W**L

LEFT

UNIT

Manual	2100-581B
Page	7 of 26

Page	Manual
26 of 8	581B-2100

FIGURE 3A

W17A2, W17L2, W18A2, W18L2, W24A2, W24L2

MOUNTING INSTRUCTIONS

3	13	"	7	1	"	20"	7	1	"
	16			16				16
						Supply Opening			8"
		12"
									20 1	"
		12"							2
		12"				Return Opening			12"
		12"				20"

12"	3"	3	81	"
	1"	4"		1"
87 "		Typ.
5"
	4"
2"	Typ.	2"

WallOpening andHoleLocationView

SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF TOP.	RAIN FLASHING
	SUPPLIED
TOP	FOAM AIR SEAL
		WALL STRUCTURE
WALL
HEATER ACCESS	SUPPLY AIR
PANEL	DUCT
	RETURN AIR
	OPENING
		NOTES:
		IT IS RECOMMENDED THAT A BEAD OF
		SILICONE CAULKING BE PLACED BEHIND
		THE SIDE MOUNTING FLANGES AND UNDER
		TOP FLASHING AT TIME OF INSTALLATION.
		W**A UNIT SHOWN, W**L UNIT
		CONTROLS AND HEATER ACCESS
		IS ON OPPOSITE (LEFT) SIDE.
	Right SideView	MIS-3157

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26 of 9	581B-2100

									FIGURE 3B
								W30A2, W30L2, W36A2, W36L2
								MOUNTING INSTRUCTIONS
		A	B	C	D			E	SEAL WITH BEAD
REQUIRED DIMENSIONS TO MAINTAIN									OF CAULKING ALONG
									ENTIRE LENGTH OF TOP.	RAIN FLASHING
1/4" MIN. CLEARANCE FROM		28 3/8	8 3/8	5 3/8	3 11/16		17 5/8
										SUPPLIED
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN			9 7/8	4 5/8	4 7/16		16 7/8		TOP	FOAM AIR SEAL
RECOMMENDED 1" CLEARANCE FROM 29 7/8
COMBUSTIBLE MATERIALS											WALL STRUCTURE
								WALL
											1/4" CLEARANCE ON ALL
											FOUR SIDES OF SUPPLY
											AIR DUCT IS REQUIRED
											FROM COMBUSTABLE
	C	A		C							MATERIALS
D		Supply Opening			B				HEATER ACCESS	SUPPLY AIR
12"									PANEL	DUCT
					E
12"
12"		Return Opening			14"					RETURN AIR
										OPENING
12"		28"
			3 1	"
		2 87 "	8	4"			7				NOTES:
12"	87 "							"
		7		Typ.			8				IT IS RECOMMENDED THAT A BEAD OF
5 1	"	8 "									SILICONE CAULKING BE PLACED BEHIND
											THE SIDE MOUNTING FLANGES AND UNDER
16		4"									TOP FLASHING AT TIME OF INSTALLATION.
4	11	Typ.			11	"					W*R UNIT SHOWN, W*L UNIT
	16 "				4 16						CONTROLS AND HEATER ACCESS
											IS ON OPPOSITE (LEFT) SIDE.
	WallOpening andHoleLocationView									Right SideView	MIS-3158

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of 10	2100
26	581B-

FIGURE 3C

W42A2, W42L2, W48A2, W48L2, W60A2, W60L2, W70A2, W70L2

MOUNTING INSTRUCTIONS

					SEAL WITH BEAD
					OF CAULKING ALONG	RAIN FLASHING
					ENTIRE LENGTH OF
A	B	C	D	E	TOP.	SUPPLIED

REQUIRED DIMENSIONS TO MAINTAIN		30 1/2	10 1/2		6 1/4	1 1/4		29 3/4	TOP	FOAM AIR SEAL
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN		32	12		5 1/2	2		29		WALL STRUCTURE
RECOMMENDED 1" CLEARANCE FROM
COMBUSTIBLE MATERIALS										1/4" CLEARANCE ON ALL
									WALL
										FOUR SIDES OF SUPPLY
										AIR DUCT IS REQUIRED
	C	A			C					FROM COMBUSTABLE
D									HEATER ACCESS	MATERIALS
									PANEL
	Supply Opening					B				SUPPLY AIR
										DUCT
16"
16"						E
16"
	Return Opening					16"				RETURN AIR
										OPENING
16" 1	6 21 "	30"
					1					NOTES:
16" 1		3"		3			87	"		IT IS RECOMMENDED THAT A BEAD OF
	1"		4"		8 "					SILICONE CAULKING BE PLACED BEHIND
			Typ.							THE SIDE MOUNTING FLANGES AND UNDER
										TOP FLASHING AT TIME OF INSTALLATION.
2 1 87 "	4"					1	"
	Typ.				6 21 "	2 8		3
	6 21 "
1	Dimension is 21" on 95" tall units.
2	Dimension is 10" on T48H1 & T60H1.
3	Dimension is 6" on T48H1 & T60H1.

Wall Opening and Hole Location View	Right Side View
	MIS-416 E

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 first 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 fire causing damage, injury or death.

Manual	2100-581B
Page	11 of 26

FIGURE 5

WALL MOUNTING INSTRUCTIONS

	SEE FIGURE 3 – MOUNTING INSTRUCTIONS		WALL STRUCTURE
			FACTORY SUPPLIED
			RAIN FLASHING.
			MOUNT ON UNIT
			BEFORE INSTALLATION
	SUPPLY AIR	SUPPLY AIR	SUPPLY AIR
	OPENING	OPENING	DUCT
	RETURN AIR	RETURN AIR	RETURN AIR
			OPENING
	OPENING	OPENING

BOTTOM MOUNTING

WOOD OR STEEL SIDING

BRACKET. MOUNT ON

WALL BEFORE

INSTALLING UNIT.

CONCRETE BLOCK WALL INSTALLATION

WOOD FRAME WALL INSTALLATION

SIDE VIEW

MIS-548 A

FIGURE 6

WALL MOUNTING INSTRUCTIONS

		ATTACH TO TOP
		PLATE OF WALL
		1.000" CLEARANCE
		ALL AROUND DUCT
		INTERIOR FINISHED WALL
		OVER FRAME
		1.000" CLEARANCE
		ALL AROUND DUCT
		EXTERIOR FINISH WALL
		OVER FRAME
	FRAMING MATERIAL
	2 x 4'S, 2 x 6'S &/OR	ATTACH TO BOTTOM
	STRUCTURAL STEEL
		PLATE OF WALL
	MIS-549 B

SEE UNIT DIMENSIONS, FIGURE 2,

FOR ACTUAL DIMENSIONS.

E + 1.000

B

		1.000
SUPPLY DUCT		A
OPENING
		I
RETURN DUCT		C
OPENING
		K
2 x 6	C
		L

THIS STRUCTURAL MEMBER

LOCATED TO MATCH STUD

SPACING FOR REST OF WALL.

A SECOND MEMBER MAY BE

REQUIRED FOR SOME WALLS.

Manual	2100-581B
Page	12 of 26

FIGURE 7

COMMON WALL MOUNTING INSTALLATIONS

SUPPLY DUCT MAY BE LOCATED IN AN ATTIC

OR BELOW CEILING RAFTERS AS SHOWN

RAIN		RAIN
FLASHING	RAFTERS
		FLASHING	RAFTERS
	FINISHED CEILING SURFACE		SUPPLY AIR DUCT
	SUPPLY AIR DUCT		FINISHED CEILING SURFACE
	W/ GRILLE
	RETURN AIR		RETURN AIR
			OPENING W/ GRILLE
	OPENING W/ GRILLE
OUTSIDE		OUTSIDE
WALL
		WALL

FREE AIR FLOW	DUCTED SUPPLY
NO DUCT	RETURN AT UNIT

SUPPLY DUCT MAYBE LOCATED IN AN ATTIC			SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
			OR BELOW CEILING RAFTERS AS SHOWN
RAIN		RAIN
FLASHING
	RAFTERS	FLASHING	RAFTERS
	SUPPLY AIR DUCT		SUPPLY AIR DUCT
	FINISHED		LOWERED	SUPPLY AIR
			CEILING
	CEILING SURFACE			GRILLE
	RETURN AIR			FINISHED CEILING
				SURFACE
	SPACE		CLOSET WALL
	WALL SLEEVE		WALL
	FALSE WALL
			SLEEVE
OUTSIDE	RETURN AIR GRILLE	OUTSIDE	RAISED FLOOR	RETURN AIR
			RETURN AIR	GRILLE
WALL		WALL

FALSE WALL INSTALLATION

CLOSET INSTALLATION

MIS-550 B

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 field wiring used must be sized to carry that amount of current. Depending on the installed KW of electric heat, there may be two field 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 field 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.

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 Specifications.

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: The voltage should be measured at the field 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.

Manual	2100-581B
Page	14 of 26

START UP

THESE UNITS REQUIRE R-410A REFRIGERANT AND POLYOL 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 significant 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 flammable.

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 fill 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 significantly 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, verification of proper rotation must be made. Verification 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.

Verification 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 specific system or installation,

connecting properly phased power leads to the same Fusite terminal should maintain proper rotation direction.

The direction of rotation of the compressor may be changed by reversing any two line connections to the unit.

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 filters at all times. Also, not to needlessly close off

supply and return air registers. This reduces airflow 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 airflow circulation is essential.

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.

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

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.

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 out and cut in settings are fixed by specific air conditioner unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.

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 Table 2.

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 specific 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

TABLE 1

FAN BLADE DIMENSION

	Model	Dimension
		A
	W17A2 / W17L2
	W18A2 / W18L2	1.00"
	W24A2 / W24L2
	W30A2 / W30L2	1.25"
	W36A2 / W36L2
	W42A2 / W42L2
	W48A2 / W48L2	1.75"
	W60A2 / W60L2
	W70A2 / W70L2

R-410A

REFRIGERANT CHARGE

This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity.

The following pressure tables show nominal pressures for the units. Since many installation specific situations can affect the pressure readings, this information should only be used by certified 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.

6.Service motor/fan as needed.

7.Reverse steps to reinstall.

Manual	2100-581B
Page	18 of 26

TABLE 2

COOLING PRESSURE TABLE

Air Temperature Entering Outdoor Coil °F

	Model	Return Air Temp	Pressure	75	80	85	90	95	100	105	110	115	120
		(DB/WB)
		75/62	Low Side	124	126	128	130	132	133	135	137	138	140
			High Side	321	340	362	384	409	434	461	490	521	553
	W17A/L	80/67	Low Side	133	135	137	139	141	142	144	146	148	150
			High Side	329	349	371	394	419	445	473	503	534	567
		85/72	Low Side	138	140	142	144	146	147	149	151	153	155
			High Side	341	361	384	408	434	461	490	521	553	587
		75/62	Low Side	127	129	131	133	135	137	138	140	143	145
			High Side	318	339	362	385	409	434	459	486	513	541
	W18A/L	80/67	Low Side	136	138	140	142	144	146	148	150	153	155
			High Side	326	348	371	395	419	445	471	498	526	555
		85/72	Low Side	141	143	145	147	149	151	153	155	158	160
			High Side	337	360	384	409	434	461	487	515	544	574
		75/62	Low Side	119	121	122	124	127	129	131	133	135	137
			High Side	340	361	383	407	432	459	488	518	550	583
	W24A/L	80/67	Low Side	127	129	131	133	136	138	140	142	144	146
			High Side	349	370	393	417	443	471	500	531	564	598
		85/72	Low Side	131	134	136	138	141	143	145	147	149	151
			High Side	361	383	407	432	459	487	518	550	584	619
		75/62	Low Side	122	124	127	129	131	133	135	137	137	139
			High Side	335	358	381	406	431	456	483	509	536	565
	W30A/L	80/67	Low Side	130	133	136	138	140	142	144	146	147	149
			High Side	344	367	391	416	442	468	495	522	550	579
		85/72	Low Side	135	138	141	143	145	147	149	151	152	154
			High Side	356	380	405	431	457	484	512	540	569	599
		75/62	Low Side	120	122	124	126	129	130	132	134	135	136
			High Side	339	366	392	418	446	473	501	529	558	586
	W36A/L	80/67	Low Side	128	130	133	135	138	139	141	143	144	145
			High Side	348	375	402	429	457	485	514	543	572	601
		85/72	Low Side	132	135	138	140	143	144	146	148	149	150
			High Side	360	388	416	444	473	502	532	562	592	622
		75/62	Low Side	123	124	126	128	130	132	134	136	137	139
			High Side	320	342	367	391	416	443	469	496	526	554
	W42A/L	80/67	Low Side	132	133	135	137	139	141	143	145	147	149
			High Side	328	351	376	401	427	454	481	509	539	568
		85/72	Low Side	137	138	140	142	144	146	148	150	152	154
			High Side	339	363	389	415	442	470	498	527	558	588
		75/62	Low Side	117	119	121	123	125	127	129	131	133	135
			High Side	355	378	403	427	454	482	510	539	570	603
	W48A/L	80/67	Low Side	125	127	129	132	134	136	138	140	142	144
			High Side	364	388	413	438	466	494	523	553	585	618
		85/72	Low Side	129	131	134	137	139	141	143	145	147	149
			High Side	377	402	427	453	482	511	541	572	605	640
		75/62	Low Side	122	124	126	128	130	131	133	135	137	138
			High Side	346	371	396	421	447	473	499	526	553	580
	W60A/L	80/67	Low Side	131	133	135	137	139	140	142	144	146	148
			High Side	355	380	406	432	458	485	512	539	567	595
		85/72	Low Side	136	138	140	142	144	145	147	149	151	153
			High Side	367	393	420	447	474	502	530	558	587	616
		75/62	Low Side	118	121	122	123	125	127	129	131	132	134
			High Side	349	371	395	419	444	470	497	525	553	583
	W70A/L	80/67	Low Side	126	129	131	132	134	136	138	140	141	143
			High Side	358	381	405	430	455	482	510	538	567	598
		85/72	Low Side	130	134	136	137	139	141	143	145	146	148
			High Side	371	394	419	445	471	499	528	557	587	619

Low side pressure ± 4 PSIG High side pressure ± 10 PSIG

Tables are based upon rated CFM (airflow) 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: Pressuretablebasedonhighspeedcondenserfanoperation. Ifcondensingpressuresappearelevatedcheck condenser fan wiring. See “Condenser Fan Operation”.

Manual	2100-581B
Page	19 of 26

TABLE 3

Electrical Specifications — W**A Series

			No.		Single Circuit						Dual Circuit
		Rated						 Minimum		 Maximum						
			Field		Maximum	Field		Circuit		External Fuse		Field Power			Ground
	MODEL	Volts &		Minimum
			Power		External	Power	Ground	Ampacity		or Ckt. Breaker		Wire Size			Wire Size
		Phase		Circuit
			Circuits		Fuse or	Wire	Wire
				Ampacity				Ckt. A	Ckt. B	Ckt. A	Ckt. B	Ckt. A		Ckt. B	Ckt. A		Ckt. B
					Ckt. Brkr.	Size
	W17, 18A2-A00,A0Z		1	16	20	12	12
	A05	230/208-1	1	30	30	10	10
	A08		1	46	50	8	10
	A10		1	56	60	6	10
	W24A2-A00, A0Z		1	21	30	10	10
	A04		1	25	30	10	10
	A05	230/208-1	1	30	30	10	10
	A08		1	46	50	8	10
	A10		1	56	60	6	10
	W24A2-B00, B0Z	230/208-3	1	15	20	12	12
	B06		1	22	25	10	10
	W24A2-C00, C0Z	460-3	1	9	15	14	14
	C06		1	11	15	14	14
	W30A2-A00*, A0Z*		1	24	35	8	10
	A05*		1	32	35	8	10
	A08	230/208-1	1	47	50	8	10
	A10*		1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	W30A2-B00*, B0Z*		1	18	20	12	12
	B06	230/208-3	1	24	25	10	10
	B09*		1	33	35	8	10
	B15		1	51	60	6	10
	W30A2-C00*, C0Z*		1	11	15	14	14
	C06	460-3	1	12	15	14	14
	C09*		1	17	20	12	12
	C15		1	26	30	10	10
	W36A2-A00*, A0Z*		1	29	35	8	10
	A05*		1	32	35	8	10
	A08	230/208-1	1	47	50	8	10
	A10*		1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	W36A2-B00*, B0Z*		1	23	30	10	10
	B06*	230/208-3	1	24	30	10	10
	B09*		1	33	35	8	10
	B15		1	51	60	6	10
	W36A2-C00*, C0Z*		1	11	15	14	14
	C06*	460-3	1	12	15	14	14
	C09*		1	16	20	12	12
	C15		1	26	30	10	10
	W42A2-A00, A0Z		1	32	50	8	10
	A05		1	32	50	8	10
	A10	230/208-1	1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	A20		1 or 2	110	125	2	6	58	52	60	60	6		6	10		10
	W42A2-B00, B0Z		1	24	35	8	10
	B09	230/208-3	1	33	35	8	10
	B15		1	51	60	6	10
	B18		1	60	60	6	10
	W42A2-C00, C0Z		1	12	15	14	14
	C09	460-3	1	17	20	12	12
	C15		1	26	30	10	10
	W48A2-A00, A0Z		1	39	50	8	10
	A05		1	39	50	8	10
	A10	230/208-1	1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	A20		1 or 2	110	125	2	6	58	52	60	60	6		6	10		10
	W48A2-B00, B0Z		1	27	40	8	10
	B09	230/208-3	1	33	40	8	10
	B15		1	51	60	6	10
	B18		1	60	60	6	10
	W48A2-C00, C0Z		1	13	20	12	12
	C09	460-3	1	17	20	12	12
	C15		1	26	30	10	10
	W60A2-A00, A0Z		1	42	60	8	10
	A05		1	42	60	8	10
	A10	230/208-1	1	60	60	6	10
	A15		1 or 2	86	90	3	8	60	26	60	30	6		10	10		10
	A20		1 or 2	112	125	2	6	60	52	60	60	6		6	10		10
	W60A2-B00, B0Z		1	28	40	8	10
	B09	230/208-3	1	35	40	8	10
	B15		1	53	60	6	10
	B18		2	N/A	N/A	N/A	N/A	35	28	40	30	8		10	10		10
	W60A2-C00, C0Z		1	15	20	12	12
	C09	460-3	1	18	20	12	12
	C15		1	27	30	10	10
	W70A2-A00, A0Z		1	56	60	6	10
	A05		1	56	60	6	10
	A10	230/208-1	1	59	60	6	10
	A15		1 or 2	85	90	4	8	59	26	60	30	6		10	10		10
	A20		1 or 2	111	125	2	6	59	52	60	60	6		6	10		10
	W70A2-B00, B0Z		1	38	60	8	10
	B09	230/208-3	1	38	60	8	10
	B15		1	53	60	6	10
	B18		2	N/A	N/A	N/A	N/A	38	28	60	30	8		10	10		10
	W70A2-C00, C0Z		1	19	30	10	10
	C09	460-3	1	19	30	10	10
	C15		1	27	35	18	10

 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field 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 field power conductors. Refer to the National Electrical code (latest version), Article 310 for power conductor sizing.

Caution: When more than one field 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

TABLE 4

Electrical Specifications — W**L Series

			No.		Single Circuit						Dual Circuit
		Rated						 Minimum		 Maximum						
			Field		Maximum	Field		Circuit		External Fuse		Field Power			Ground
	MODEL	Volts &		Minimum
			Power		External	Power	Ground	Ampacity		or Ckt. Breaker		Wire Size			Wire Size
		Phase		Circuit
			Circuits		Fuse or	Wire	Wire
				Ampacity				Ckt. A	Ckt. B	Ckt. A	Ckt. B	Ckt. A		Ckt. B	Ckt. A		Ckt. B
					Ckt. Brkr.	Size
	W17, 18L2-A00,A0Z		1	16	20	12	12
	A05	230/208-1	1	30	30	10	10
	A08		1	46	50	8	10
	A10		1	56	60	6	10
	W24L2-A00, A0Z		1	21	30	10	10
	A05	230/208-1	1	30	30	10	10
	A08		1	46	50	8	10
	A10		1	56	60	6	10
	W24L2-B00, B0Z	230/208-3	1	15	20	12	12
	B06		1	22	25	10	10
	W24L2-C00, C0Z	460-3	1	9	15	14	14
	C06		1	11	15	14	14
	W30L2-A00*, A0Z*		1	24	35	8	10
	A05*		1	32	35	8	10
	A08	230/208-1	1	47	50	8	10
	A10*		1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	W30L2-B00*, B0Z*		1	18	20	12	12
	B09*	230/208-3	1	33	35	8	10
	B15		1	51	60	6	10
	W30L2-C00*, C0Z*		1	11	15	14	14
	C09*	460-3	1	17	20	12	12
	C15		1	26	30	10	10
	W36L2-A00*, A0Z*		1	29	35	8	10
	A05*	230/208-1	1	32	35	8	10
	A10*		1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	W36L2-B00*, B0Z*		1	23	30	10	10
	B09*	230/208-3	1	33	35	8	10
	B15		1	51	60	6	10
	W36L2-C00*, C0Z*		1	11	15	14	14
	C09*	460-3	1	16	20	12	12
	C15		1	26	30	10	10
	W42L2-A00, A0Z		1	32	50	8	10
	A05	230/208-1	1	32	50	8	10
	A10		1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	W42L2-B00, B0Z		1	24	35	8	10
	B09	230/208-3	1	33	35	8	10
	B15		1	51	60	6	10
	W42L2-C00, C0Z		1	12	15	14	14
	C09	460-3	1	17	20	12	12
	C15		1	26	30	10	10
	W48L2-A00, A0Z		1	39	50	8	10
	A05	230/208-1	1	39	50	8	10
	A10		1	58	60	6	10
	A15		1 or 2	84	90	4	8	58	26	60	30	6		10	10		10
	W48L2-B00, B0Z		1	27	40	8	10
	B09	230/208-3	1	33	40	8	10
	B15		1	51	60	6	10
	W48L2-C00, C0Z		1	13	20	12	12
	C09	460-3	1	17	20	12	12
	C15		1	26	30	10	10
	W60L2-A00, A0Z		1	42	60	8	10
	A05	230/208-1	1	42	60	8	10
	A10		1	60	60	6	10
	A15		1 or 2	86	90	3	8	60	26	60	30	6		10	10		10
	W60L2-B00, B0Z		1	28	40	8	10
	B09	230/208-3	1	35	40	8	10
	B15		1	53	60	6	10
	W60L2-C00, C0Z		1	15	20	12	12
	C09	460-3	1	18	20	12	12
	C15		1	27	30	10	10
	W70L2-A0Z		1	56	60	6	10
	A05	230/208-1	1	56	60	6	10
	A10		1	59	60	6	10
	A15		1 or 2	85	90	4	8	59	26	60	30	6		10	10		10
	W70L2-B0Z		1	38	60	8	10
	B09	230/208-3	1	38	60	8	10
	B15		1	53	60	6	10
	W70L2-C0Z		1	19	30	10	10
	C09	460-3	1	19	30	10	10
	C15		1	27	35	18	10

 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field 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 field power conductors. Refer to the National Electrical code (latest version), Article 310 for power conductor sizing.

Caution: When more than one field 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	21 of 26

TABLE 5

RECOMMENDED AIRFLOW

		Nominal	Nominal	Recommended		Factory Speed
	Model	Rated	Rated
				Airflow Range		Connection
		CFM *	ESP *
	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		W17/18			W24			W30				W36				W42/48				W60				W70
		High		Low		Single		High		Low		High		Low		High		Low		High		Low		High		Low
	ESP	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet	Dry	Wet
	(Inch
		Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil	Coil
	H20)
	0.0	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
	0.1	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
	0.2	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
	0.3	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
	0.4	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
	0.5	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

TABLE 7

MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

	W17A/L,
Model	W18A/L,		W30A/L, W36A/L				W42A/L, W48A/L		W60A/L, W70A/L
	W24A/L
Outlet	FRONT	FRONT		TOP			FRONT		FRONT
Speed	Single	High	Low	High		Low	High	Low	High	Low
-A0Z	.50	.50	.50	.50		.50	.50	.50	.50	.50
-A04				.50		.45
-A05	.50	.50	.50				.50	.50	.50	.50
-A08	.50	.50	.50
-A10		.50	.45	.50		.35	.50	.50	.50	.50
-A15		.40	.35				.50	.50	.50	.50
-A20							.50	.45	.50	.40
-B0Z	.50	.50	.50	.50		.50	.50	.50	.50	.50
-B06	.50	.50	.40
-B09		.50	.50	.45		.40	.50	.50	.50	.50
-B15		.45	.30				.50	.50	.50	.50
-B18							.50	.50	.50	.50
-C0Z		.50	.50	.50		.50	.50	.50	.50	.50
-C06		.50	.50
-C09		.50	.40	.45		.40	.50	.50	.50	.50
-C15		.45	.35				.50	.50	.50	.50

Values shown are for units equipped with standard 1-inch throwaway filter or 1-inch washable filter.

Derate ESP by .15 for 2-inch pleated filters.

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

TABLE 9A

OPTIONAL ACCESSORIES — RIGHT HAND

W17/18A2-A

W24A2-A W24A2-B W24A2-C W30A2-A W30A2-B

W30A2-C

W36A2-A W36A2-B W36A2-C W42A2-A

W42A2-B W42A2-C

W48A2-A W48A2-B W48A2-C

W60A2-A W60A2-B W60A2-C

W70A2-A W70A2-B W70A2-C

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

KITS

EHWA37-B15

X

X

EHWC03A-C06

X

X

HEATER

EHWC03A-C09

X

X

EHWA03A-C12

X

X

EHWA03A-C15

X

X

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

BREAKERCIRCUIT(WMCB) & DISCONNECTPULL (WMPD)

WMCB-01B

X

WMCB-08B

X

X

WMCB-02A

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

Manual	2100-581A
Page	24 of 26

TABLE 9B

OPTIONAL ACCESSORIES — LEFT HAND

W17/18L2-A

W24L2-A W24L2-B W30L2-A W30L2-B W30L2-C

W36L2-A W36L2-B W36L2-C

W42L2-A W42L2-B W42L2-C

W48L2-A W48L2-B

W48L2-C W60L2-A

W60L2-B W60L2-C W70L2-A

W70L2-B W70L2-C

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

KITS

EHWA03-B09L

X

X

EHWA37-B15L

X

X

HEATER

EHWC03-C09L

X

X

EHWA03-C15L

X

X

EHWA05-A05L

X

X

X

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

BREAKERCIRCUIT(WMCB) & DISCONNECTPULL (WMPD)

WMCB-01B

X

WMCB-09B

X

X

WMCB-02A

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

Manual	2100-581B
Page	25 of 26

TABLE 10

VENT & CONTROL OPTIONS

Part Number

Description

W17, W18, W24

W30, W36

W42, W48, W60, W70

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	Economizer - School Version, Enthalpy	X
ECONWMT-E2	Economizer - Bldg. Equipment, Enthalpy	X
ECONWMT-T2	Economizer - Bldg. Equipment, DB Temp.	X
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	Economizer - School Version, Enthalpy		X
ECONWMT-E3	Economizer - Bldg. Equipment, Enthalpy		X
ECONWMT-T3	Economizer - Bldg. Equipment, DB Temp.		X
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	Economizer - School Version, Enthalpy			X
ECONWMT-E5	Economizer - Bldg. Equipment, Enthalpy			X
ECONWMT-T5	Economizer - Bldg. Equipment, DB Temp.			X
ERVF-A5	Energy Recovery Ventilator - 230 Volt			X
ERVF-C5	Energy Recovery Ventilator - 460 Volt			X

Manual	2100-581B
Page	26 of 26