Bard WH-301, WH361 User Manual

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WALL MOUNTED INSTALLATION PACKAGED HEAT PUMP INSTRUCTIONS

Models: WH301, WH361

Bard Manufacturing Company, Inc.

Manual No.:

2100-193O

Bryan, Ohio 43506

Supersedes:

2100-193N

Since 1914. . .Moving ahead just as planned.

File:

Volume III, Tab 17

Date:

05-04-07

 

 

 

 

 

 

© Copyright 2003

Manual

2100-193O

Page

1 of 26

 

 

CONTENTS

Getting Other Information and Publications

 

For more information,

 

contact these publishers ........................................

3

Wall Mount General Information

 

Heat Pump Wall Mount Model Nomenclature ........

4

Shipping Damage ..................................................

4

General .............................................................

4

Duct Work ......................................................

4 & 8

Filters .............................................................

8

Fresh Air Intake ......................................................

8

Condensate Drain ..................................................

8

Installation Instructions

 

Wall Mounting Information .....................................

9

Mounting the Unit...................................................

9

Top Outlet Only ......................................................

9

Wiring — Main Power ..........................................

15

Wiring — Low Voltage Wiring...............................

15

Low Voltage Connections ....................................

15

Optional Outdoor Thermostat Applications ..........

17

Thermostat Indicator ............................................

19

Figures

 

 

Figure 1

Unit Dimensions ...................................

6

Figure 2

Fresh Air Damper Assembly .................

8

Figure 3

Mounting Instructions .........................

10

Figure 4

Electric Heat Clearance ......................

11

Figure 5

Attaching Top Outlet to Unit ................

12

Figure 6

Top Outlet Model Mounted .................

12

Figure 7

Wall-Mounting Instructions .................

13

Figure 8

Wall-Mounting Instructions .................

13

Figure 9

Common Wall-Mounting Installations . 14

Figure 10

Low Voltage Wiring .............................

16

Figure 11

Compressor Cutoff

 

 

Thermostat Wiring ..............................

17

Figure 12

Compressor Cutoff

 

 

Thermostat Wiring ..............................

17

Figure 13

Electric Heat Hold-Off Wiring ..............

18

Figure 14

Electric Heat Hold-Off Wiring ..............

18

Figure 15

Start Up Label .....................................

20

Figure 16

Defrost Control Board .........................

21

Figure 17

Fan Blade Setting ...............................

24

Start Up

 

Important Installer Note........................................

20

Crankcase Heaters ..............................................

20

Service Hints ........................................................

20

Sequence of Operation ........................................

20

Pressure Service Ports ........................................

21

Defrost Cycle .......................................................

21

Troubleshooting

 

Solid State Heat Pump Control

 

Troubleshooting Procedures ................................

22

Checking Temperature Sensor Outside

 

Unit Circuit ...........................................................

23

Fan Blade Setting Dimensions ............................

24

Removal of Fan Shroud .......................................

24

Refrigerant Charge ..............................................

24

Pressure Tables ...................................................

25

Optional Accessories ...........................................

26

Tables

 

 

 

Table

1

Electric Heat Table ................................

5

Table

2

Dimensions of Basic Unit ......................

6

Table

3

Electrical Specifications ........................

7

Table

4

Operating Voltage Range ...................

15

Table

5

Thermostat Wire Size .........................

16

Table

6

Wall Thermostat ..................................

19

Table 7

Troubleshooting ..................................

22

Table

8

Fan Blade Dimensions .......................

24

Table

9

Suction Line Temperatures .................

24

Table

10

Indoor Blower Performance ................

24

Table

11

CFM and ESP.....................................

24

Table

12

Maximum ESP of Operation

 

 

 

Electric Heat Only ...............................

24

Table

13

Cooling Pressures ..............................

25

Table

14

Heating Pressures ..............................

25

Table

15

Optional Accessories ..........................

26

Manual

2100-193O

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 Avenue NW

 

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 Refrigerating,

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

Manufactured under the following U.S. patent numbers:

5,485,878; 5,301,744; 5,002,116; 4,924,934; 4,875,520; 4,825,936

Manual

2100-193O

Page

3 of 26

WALL MOUNT GENERAL INFORMATION

HEAT PUMP WALL MOUNT MODEL NOMENCLATURE

 

 

 

 

 

WH

36

1

A

10

X

X

X

X

X

A

MODEL NUMBER

 

REVISIONS

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

MODULES

CAPACITY

VOLTS & PHASE

KW

30

-

2½ Ton

A - 230/208/60/1

 

B - 230/208/60/3

 

36

-

3 Ton

 

C - 460/60/3

 

 

 

 

 

VENTILATION OPTIONS

X - Barometric Fresh Air Damper (Standard) B - Blank-off Plate

M - Motorized Fresh Air Damper

V - Commercial Room Ventilator - Motorized with Exhaust E - Economizer (Internal - Fully Modulating with Exhaust R - Energy Recovery Ventilator - with Exhaust

COIL OPTIONS

COLOR OPTIONS

X- Standard

X - Beige (Standard)

1 - Phenolic Coated Evaporator

1 - White

2 - Phenolic Coated Condenser

2 - Mesa Brown

3 - Phenolic Coated Evaporator

4 - Buckeye Gray

and Condenser

5 - Desert Brown

8 - Dark Bronze

 

OUTLET OPTIONS

 

X- Front (Standard)

 

T - Top on WH30 and WH36

FILTER OPTIONS

Models

 

X - 1-Inch Throwaway (Standard)

 

W- 1-Inch Washable

 

P - 2-Inch Pleated

 

NOTE: For 0 KW and circuit breakers (230/208 Volt) or pull disconnects (460 Volt) applications, insert 0Z in the KW field of model number.

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 heat pump 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 calculations 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.

DUCT WORK

Any heat pump is more critical of proper operating charge and an adequate duct system than a straight air conditioning unit. 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.

Manual

2100-193O

Page

4 of 26

TABLE 1

ELECTRIC HEAT TABLE

Models

 

WH301-A

 

 

WH301-B

 

WH301-C

 

WH361-A

 

 

WH361-B

 

WH361-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240-1

208-1

240-3

208-3

460-3

240-1

208-1

240-3

208-3

460-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KW

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

20.8

17065

18.1

12800

 

 

 

 

 

 

20.8

17065

18.1

12800

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

41.6

34130

36.2

25600

 

 

 

 

 

 

41.6

34130

36.2

25600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

62.5

51200

54.1

38400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

14.4

20500

12.5

15360

7.2

20475

 

 

 

 

14.4

20500

12.5

15360

7.2

20475

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

21.7

30600

18.7

23030

10.8

30700

 

 

 

 

21.7

30600

18.7

23030

10.8

30700

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

18.0

51200

 

 

 

 

36.2

51200

31.2

38400

18.0

51200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page

Manual

26 of 5

193O-2100

Page

Manual

26 of 6

193O-2100

 

 

 

 

 

 

 

 

 

 

TABLE 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIMENSIONS OF BASIC UNIT (NOMINAL)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Width

Depth

Height

Supply

Return

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

(W)

(D)

(H)

A

B

C

B

E

F

G

I

 

J

K

L

M

N

O

P

Q

R

S

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH30

38.200

17.125

70.563

7.88

27.88

13.88

27.88

40.00

18.50

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

WH36

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIGURE

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT DIMENSIONS

 

 

 

 

 

 

 

 

 

 

FRONT VIEW

SIDE VIEW

BACK VIEW

* OPTIONAL TOP OUTLET (FACTORY INSTALLED ONLY) FOR WH30 AND WH36 MODELS ONLY.

Page

Manual

26 of 7

193O-2100

TABLE 3

ELECTRICAL SPECIFICATIONS

 

 

 

4

1

2

2

 

4

 

1

 

2

 

2

 

 

 

 

 

 

Maximum

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimum

 

 

 

 

 

 

 

 

 

 

Maximum

 

 

External Fuse

 

 

 

 

 

 

 

 

No.

 

 

 

Circuit

or Circuit

Field Power

Ground

Model

 

 

External

Field

 

Rated

 

 

Ampacity

Breaker

Wire Size

Wire Size

Field

Minimum

Fuse or

Power

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Volts And

Power

Circuit

Circuit

Wire

Wire

 

 

 

 

 

 

 

 

 

 

 

 

 

CKT A

CKT B

CKT A

CKT B

CKT A

CKT B

CKT A

CKT B

 

Phase

Circuits

Ampacity

Breaker

Size

Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH301-A00, -A0Z

 

1

24

35

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

-A05

230/208-1

1

50

50

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

3 -A10

 

1

76

80

4

8

50

 

26

50

 

30

8

 

10

10

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH301-B00,-B0Z

 

1

19

25

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

-B06

230/208-3

1

37

40

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

3 -B09

 

1

46

50

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH301-C00,-C0Z

 

1

10

15

14

14

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

-C06

460-3

1

19

20

12

12

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

3 -C09

1

24

25

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

 

 

 

 

 

5 -C15

 

1

26

30

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH361-A00,-A0Z

 

1

27

40

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

-A05

230/208-1

1

53

60

6

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

3 -A10

 

1 or2

79

80

4

8

53

 

26

60

 

30

6

 

10

10

 

10

5 -A15

 

1 or 2

83

90

4

8

53

 

52

60

 

60

6

 

6

10

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH361-B00,-B0Z

 

1

20

25

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

-B06

230/208-3

1

38

40

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

3 -B09

 

1

47

50

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

5 -B15

 

1

50

50

8

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH361-C00,-C0Z

 

1

11

15

14

14

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

-C06

460-3

1

20

20

12

12

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

3 -C09

1

25

25

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

 

 

 

 

 

5 -C15

 

1

26

30

10

10

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

- - -

 

- - -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.

2Based on 75° copper wire. All wiring must conform to the National Electrical Code and all local codes.

3Maximum KW that can operate with heat pump on these "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), Article 310 for power conductor sizing.

4These “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.

5Not available on dehumidification models.

CAUTION: When more than one field power conductor 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 conductors are in a raceway.

Not available in top outlet version.

Refer to Table 12 for maximum static pressure available for duct design.

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.

A 1/4 inch clearance to combustible material for the first three (3) feet of duct attached to the outlet air frame is required. See Wall Mounting Instructions and Figures 3, 4, 7 & 8 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.

CAUTION

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 inches.

Any grille that meets the 5/8 inch louver criteria may be used. It is recommended that Bard Return Air Grille Kit RG-2 through RG-5 or RFG-2 through RFG-5 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.

NOTE: If no return air duct is used, applicable installation codes may limit this cabinet to installation only in a single story structure.

FILTERS

A 1-inch throwaway filter is supplied with each unit. The filter slides into position making it easy to service. This filter can be serviced from the outside by removing the service door. A 1-inch washable filter and a 2-inch pleated filter are also available as optional accessories. The internal filter brackets are adjustable to accommodate the two inch filter by loosening two screws in each bracket assembly and sliding the brackets apart to the required width and retightening the four screws.

FRESH AIR INTAKE

All units are built with fresh air inlet slots punched in the service panel.

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 2.

All capacity, efficiency and cost of operation information as required for Department of Energy “Energyguide” Fact Sheets 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.

FIGURE 2

FRESH AIR DAMPER ASSEMBLY

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.

Manual

2100-193O

Page

8 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.

WARNING

Fire hazard can result if 1/4 inch clearance to combustible materials for supply air duct is not maintained. See Figure 3.

3. Concrete block walls must be thoroughly inspected to insure that they are capable of carrying the weightoftheunitinstalled.

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 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. If a combustible wall, use a minimum of 28½" x 8½" dimensions for sizing. However, it is generally recommended that a 1-inch clearance is used for ease of installation and maintaining the required clearance to combustible material. The supply air opening would then be

30" x 10". See Figures 3, 4, 7 and 8 for details.

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.

3.Locate and mark lag bolt locations and bottom mounting bracket location. See Figure 3.

4.Mount bottom mounting bracket, if used.

5.Hook top rain flashing under back bend of top. Top rain flashing is shipped secured to the back of the unit on the right side.

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 heat strips and control panel and to allow proper airflow to the outdoor coil. Additional clearance may be required to meet local or national codes.

TOP OUTLET ONLY

1.Remove airframe angles from the back of the unit.

2.Coat angles with two 1/8" beads of silicone as shown. Silicone is shipped in the control panel. See Figure 5.

3.Secure angles to the top of the unit with 14 screws provided. Use prepunched holes provided. Do not relocate. See Figure 5.

4.After installation of duct work, seal around airframe and duct work to provide a rain tight seal.

5.It is strongly recommended, but not required, that this unit be installed under a soffit area large enough to shield the top of the unit. See Figure 6.

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FIGURE 3 MOUNTING INSTRUCTIONS

 

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FIGURE 4

ELECTRIC HEAT CLEARANCE

Side section view of supply air duct for wall mounted unit showing 1/4" clearance to combustible surfaces.

WARNING

A minimum of 1/4" clearance must be maintained between the supply air duct and combustible materials. This is required for the fist three (3) feet of ducting.

It is important to insure that the 1/4" minimum spacing is maintained at all points.

Failure to do this could result in overheating the combustible material and may result in a fire.

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FIGURE 5

ATTACHING TOP OUTLET AIRFRAMES TO UNIT

FIGURE 6

UNIT WITH TOP OUTLET MOUNTED UNDER OVERHANG

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FIGURE 7

WALL-MOUNTING INSTRUCTIONS

SEE FIGURE 3 – MOUNTING INSTRUCTIONS

FIGURE 8

WALL-MOUNTING INSTRUCTIONS

SEE UNIT DIMENSIONS, FIGURE 1,

FOR ACTUAL DIMENSIONS

SEE FIGURE 1 FOR

DUCT DIMENSIONS

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FIGURE 9

COMMON WALL-MOUNTING INSTALLATIONS

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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 (75ºC 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.

WIRING — LOW VOLTAGE WIRING

230/208V, 1 phase and 3 phase equipment 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 shown in Table 4:

TABLE 4

OPERATING VOLTAGE RANGE

TAP

RANGE

 

 

 

 

240V

253

-

216

 

 

 

 

208V

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.)

If no motorized vent option is used, nine (9) wires should be run from the thermostat subbase to the 24V terminal board in the unit. A nine (9) conductor, 18 gauge copper color-coded thermostat cable is recommended. If a motorized vent option is used, terminal O1 on the unit low voltage terminal block will also be used. This requires a ten (10) conductor thermostat cable to be run. The connection points are shown in Figure 10.

LOW VOLTAGE CONNECTIONS

These units use a grounded 24 volt AC low voltage circuit.

The "R" terminal is the hot terminal and the "C" terminal is grounded.

"G" terminal is the fan input.

"Y" terminal is the compressor input for cooling and heat pump.

"B/W1" terminal is the reversing valve input. The reversing valve must be energized for heating mode.

"R" terminal is 24 VAC hot.

"C" terminal is 24 VAC grounded.

"L" terminal is compressor lockout output. This terminal is activated on a high or low pressure trip by the electronic heat pump control. This is a 24 VAC output.

"W2" terminal is second stage heat (if equipped).

"01" terminal is the ventilation input. This terminal energizes any factory installed ventilation option.

"E" terminal is the emergency heat input. This terminal energizes the emergency heat relay.

LOW VOLTAGE CONNECTIONS

FOR DDC CONTROL

Fan Only

Energize G

Cooling Mode

Energize Y, G

Heat Pump Heating

Energize Y, G, B

2nd Stage Heating

Energize G, W2, Y, B/W1

(if employed)

 

Ventilation

Energize G, O1

Emergency Heat

Energize B, W2, E, G

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FIGURE 10

LOW VOLTAGE WIRING

TABLE 5

THERMOSTAT WIRE SIZE

 

 

 

Maximum

Transformer

 

 

Distance

VA

FLA

Wire Gauge

In Feet

 

 

 

 

 

 

20 gauge

45

 

 

18 gauge

60

55

2.3

16 gauge

100

 

 

14 gauge

160

 

 

12 gauge

250

 

 

 

 

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OPTIONAL OUTDOOR THERMOSTAT APPLICATIONS

Since most equipment at the time of manufacture is not designated for any specific destination of the country and are installed in areas not approaching the lower outdoor temperature range, outdoor thermostats are not factory installed as standard equipment, but are offered as an option. There are also different applications for applying outdoor thermostats. The set point of either type of outdoor thermostat application is variable with geographic region and sizing of the heating equipment to the individual structure. Utilization of the heating Application Data, and the heat loss calculation of the building are useful in determining the correct set points.

Temperature and Humidity Controller #8403-060, along with the Outdoor Sensor option Part #8403-061, can be used to:

•Limit minimum outdoor temperature for cooling option.

•Limit minimum outdoor temperature for heat pump option.

•Inhibit electric heat operation for heat pumps above selected outdoor temperature.

Thus, not requiring the optional compressor cut-off thermostat or the electric heat cut-off thermostat option.

OPTIONAL COMPRESSOR CUTOFF

THERMOSTAT (See Figures 11 and 12)

Heat pump compressor operation at outdoor temperatures below 0°F are neither desirable nor advantageous in term of efficiency. An outdoor thermostat can be applied to take the mechanical heating (compressor) off line, and send the (compressor) signal to energize electric heat in its place (to make electric heat first stage heating). This can also be applied to bank the quantity of available electric heat. For example: A heat pump operates with 10KW second stage heat – once the outdoor thermostat has switched then operates 15KW without the compressor as first stage heat.

NOTE: The additional LAB (low ambient bypass) relay is required to prevent heater operation during low temperature cooling operation.

FIGURE 11

COMPRESSOR CUTOFF THERMOSTAT WIRING

4 & 10KW 1 PH — 6 & 9KW 3 PH

FIGURE 12

COMPRESSOR CUTOFF THERMOSTAT WIRING

15KW 1 PH & 3 PH

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ELECTRIC HEAT HOLD-OFF (See Figures 13 and 14)

In other applications, it is desirable to disable the operation of the electric heat until outdoor temperatures have reached a certain design point. This won't allow the electric heat to come on as second stage heating unless the outdoor temperature is below the set point of the outdoor thermostat. This is done to maximize

efficiency by utilizing the heat pump to bring the conditioned space temperature up, rather than cycling on the electric heat due a second stage call for heat from the thermostat on start-up coming off a night setback condition or someone increasing the thermostat set point. (NOTE: Some programmable thermostats do have a built-in time delay for pulling in second stage heat when coming off setback conditions.)

FIGURE 13

ELECTRIC HEAT HOLD-OFF WIRING 4 & 10KW 1 PH — 6 & 9KW 3 PH

FIGURE 14

ELECTRIC HEAT HOLD-OFF WIRING

15KW 1 PH & 3 PH

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TABLE 6

WALL THERMOSTAT

Thermostat

Predominate Features

 

 

8403-058

2 stage cool, 2 stage heat

Electronic Non-Programmable

(TH5220D1151)

 

Auto or Manual changeover

 

2 stage cool, 3 stage heat

8403-060

Programmable Electronic

(1120-445)

Auto or Manual changeover

 

with built-in Humidistat

 

 

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START UP

IMPORTANT INSTALLER NOTE

For improved start-up performance, wash the indoor coil with a dishwashing detergent.

CRANKCASE HEATERS

All units are provided with some form of compressor crankcase heat.

All single and three phase models have an insertion well-type heater located in the lower section of the compressor housing. This is a self-regulating type heater that draws only enough power to maintain the compressor at a safe temperature.

Some form of crankcase heat is essential to prevent liquid refrigerant from migrating to the compressor, causing oil pump out on compressor start up and possible valve failure due to compressing a liquid.

The decal in Figure 15 is affixed to all outdoor units detailing start up procedure. This is very important. Please read carefully.

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.Switching to heating cycle at 75°F or higher outside temperature may cause a nuisance trip of the remote reset high pressure switch. Turn thermostat off then on to reset the high pressure switch.

3.The heat pump wall thermostats perform multiple functions. Be sure that all function switches are correctly set for the desired operating mode before trying to diagnose any reported service problems.

4.Check all power fuses or circuit breakers to be sure they are the correct rating.

5.Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

SEQUENCE OF OPERATION

COOLING – Circuit R-Y makes at thermostat pulling in compressor contactor, starting the compressor and outdoor motor. The G (indoor motor) circuit is automatically completed on any call for cooling operation or can be energized by manual fan switch on subbase for constant air circulation.

FIGURE 15

START UP LABEL

IMPORTANT

THESE PROCEDURES MUST BE FOLLOWED AT INITIAL START UP AND AT ANY TIME POWER HAS BEEN REMOVED FOR 12 HOURS OR LONGER.

TO PREVENT COMPRESSOR DAMAGE WHICHMAYRESULTFROMTHEPRESENCE OF LIQUID REFRIGERANT IN THE COMPRESSOR CRANKCASE:

1. Make certain the room thermostat is in the "off" position (the compressor is not to operate).

2.Apply power by closing the system disconnect switch. This energizes the compressor heater which evaporates the liquid refrigerant in the crankcase.

3.Allow 4 hours or 60 minutes per poind of refrigerant in the system as noted on the unit rating plate, whichever is greater.

4.After properly elapsed time, the thermostat may be set to operate the compressor.

5.Except as required for safety while servicing. Do not open system

disconnect switch.

7961-061

HEATING – A 24V solenoid coil on reversing valve controls heating cycle operation. Two thermostat options, one allowing “Auto” changeover from cycle to cycle and the other constantly energizing solenoid coil during heating season and thus eliminating pressure equalization noise except during defrost, are to be used. On “Auto” option, a circuit is completed from R-W1 and R-Y on each heating “on” cycle, energizing reversing valve solenoid and pulling in compressor contactor starting compressor and outdoor motor. R-G also make starting indoor blower motor. Heat pump heating cycle now in operation. The second option has no “Auto” changeover position, but instead energizes the reversing valve solenoid constantly whenever the system switch on subbase is placed in “Heat” position, the “B” terminal being constantly energized from R. A thermostat demand for heat completes R-Y circuit pulling in compressor contactor starting compressor and outdoor motor.

R-G make starting indoor blower motor.

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PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found on Page 25 covering all models. It is imperative to match the correct pressure table to the unit by model number.

DEFROST CYCLE

The defrost cycle is controlled by temperature and time on the solid state heat pump control. See Figure 16.

When the outdoor temperature is in the lower 40° F temperature range or colder, the outdoor coil temperature is 32° F or below. This coil temperature is sensed by the coil temperature sensor mounted near the bottom of the outdoor coil. Once coil temperature reaches 30° F or below, the coil temperature sensor sends a signal to the control logic of the heat pump control and the defrost timer will start.

After 60 minutes at 30° F or below, the heat pump control will place the system in the defrost mode.

During the defrost mode, the refrigerant cycle switches back to the cooling cycle, the outdoor motor stops, electric heaters are energized, and hot gas passing through the outdoor coil melts any accumulated frost. When the temperature rises to approximately 57° F, the coil temperature sensor will send a signal to the heat pump control, which will return the system to heating operations automatically.

If some abnormal or temporary condition such as a high wind causes the heat pump to have a prolonged defrost cycle, the heat pump control will restore the system to heating operation automatically after 10 minutes.

The heat pump defrost control board has an option of 30, 60 or 90-minute setting. All models are shipped from the factory on the 60-minute pin. If special

FIGURE 16

DEFROST CONTROL BOARD

circumstances require a change to another time, remove the wire from the 60 minute terminal and reconnect to the desired terminal. The manufacturer's recommendation is for 60 minute defrost cycles. Refer to Figure 16.

There is a cycle speed up jumper on the control. This can be used to reduce the time between defrost cycle operation without waiting for time to elapse.

Use a small screwdriver or other metallic object, or another 1/4 inch QC, to short between the SPEEDUP terminals to accelerate the HPC timer and initiate defrost.

Be careful not to touch any other terminals with the instrument used to short the SPEEDUP terminals. It may take up to 10 seconds with the SPEEDUP terminals shorted for the speedup to be completed and the defrost cycle to start.

As soon as the defrost cycle kicks in remove the shorting instrument from the SPEEDUP terminals.

Otherwise the timing will remain accelerated and run through the 1-minute minimum defrost length sequence in a matter of seconds and will automatically terminate the defrost sequence.

There is an initiate defrost jumper (sen jump) on the control that can be used at any outdoor ambient during the heating cycle to simulate a 0° coil temperature. This can be used to check defrost operation of the unit without waiting for the outdoor ambient to fall into the defrost region.

By placing a jumper across the SEN JMP terminals (a 1/4 inch QC terminal works best) the defrost sensor mounted on the outdoor coil is shunted out and will activate the timing circuit. This permits the defrost cycle to be checked out in warmer weather conditions without the outdoor temperature having to fall into the defrost region.

In order to terminate the defrost test the SEN JMP jumper must be removed. If left in place too long the

compressor could stop due to the high pressure control opening because of high pressure condition created by operating in the cooling mode with outdoor fan off. Pressure will rise fairly fast as there is likely no actual frost on the outdoor coil in this artificial test condition.

There is also a 5-minute compressor time delay function built into the HPC. This is to protect the compressor from short cycling conditions. In some instances it is helpful to the service technician to override or speed up this timing period, and shorting out the SPEEDUP terminals for a few seconds can do this.

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TROUBLESHOOTING

SOLID STATE HEAT PUMP CONTROL TROUBLESHOOTING PROCEDURE

1.Turn on AC power supply to indoor and outdoor units.

2.Turn thermostat blower switch to “Fan On” – the indoor blower should start. (If it doesn't, troubleshoot indoor unit and correct problem).

3.Turn thermostat blower switch to “Auto” position. Indoor blower should stop.

4.Set system switch to heat or cool. Adjust thermostat to call for “Heat” or “Cool” – the indoor blower, compressor and outdoor fan should start.

NOTE: If there was no power to 24 volt transformer, the compressor and outdoor fan motor will not start for 5 minutes. This is because of the compressor short cycle protection.

TABLE 7

TROUBLESHOOTING

 

SYMPTOM

POSSIBLE CAUSES

 

WHAT TO CHECK

 

HOW TO CHECK OR REPAIR

 

 

 

 

 

 

 

 

Compressor contactor

Control circuit wiring

Check for R connection at unit,

Run R connection to outdoor unit to power

 

 

does not energize

 

and 24V between R-C

heat pump control

 

 

(cooling or heating)

 

 

 

 

 

 

 

Compressor lock out

1.

Check for 24V between

1.

If no voltage between L-C turn thermostat

 

 

 

 

 

 

 

 

L1-C on heat pump control

 

off and on again to reset high pressure

 

 

 

 

2.

Check across high

 

switch.

 

 

 

 

2. If high pressure switch is open and will not

 

 

 

 

 

pressure switch.

 

reset, replace high pressre switch.

 

 

 

 

 

 

 

 

 

Compressor short

Check for 24V between CC-C

If no voltage between CC-C, jumper speed up

 

 

 

cycle protection

and Y-C on heat pump control

terminal and within 10 seconds power should

 

 

 

 

 

 

appear between CC-C. Remove speed up

 

 

 

 

 

 

jumper after 10 seconds

 

 

 

 

 

 

 

 

 

Heat pump control

Check all other possible

Replace heat pump control

 

 

 

defective

causes. Manual 2100-065

 

 

 

 

 

 

 

 

 

 

 

Contactor defective

Check for open or shorted coil

Replace contactor

 

 

 

 

winding

 

 

 

 

 

Power phasing not

Check for red LED on phase

Switch two power leads to the unit.

 

 

 

correct.

monitor. (3 phase units only.)

 

 

 

 

Fan outdoor motor

Motor defective

Check for open or shorted

Replace motor

 

 

does not run

 

motor winding

 

 

 

 

(cooling or heating

 

 

 

 

 

 

 

Motor capacitor

Check capacitor rating. Check

Replace capacitor

 

 

except during defrost)

 

 

defective

for open or shorted capacitor.

 

 

 

 

 

 

 

 

 

 

Heat pump control

Check across fan relay on heat

Replace heat pump control

 

 

 

defective

pump control (Com-NC)

 

 

 

 

Reversing valve does

Reversing valve

Check for open or shorted coil

Replace solenoid coil

 

 

not energize

solenoid coil defective

 

 

 

 

 

 

(heating only)

 

 

 

 

 

 

 

Heat pump control

Check for 24V between RV-C

1.

Check control circuit wiring

 

 

 

 

 

 

defective

and B-C

2.

Replace heat pump control

 

 

 

 

 

 

 

 

Unit will not go into

Temperature sensor

Disconnect temperature sensor

1. If unit goes through defrost cycle, replace

 

 

defrost

or heat pump control

from board and jumper across

 

temperature sensor

 

 

(heating only)

defective

speed up terminals and sen

 

 

 

 

 

 

jump terminals. This should

2. If unit does not go through defrost cycle,

 

 

 

 

cause the unit to go through a

 

replace heat pump control.

 

 

 

 

defrost cycle within one minute.

 

 

 

 

Unit will not come out

Temperature sensor

Jumper across speed up

1. If unit comes out of defrost cycle, replace

 

 

of defrost

or heat pump control

terminals. This should cause

 

termperature sensor.

 

 

(heating only)

defective

the unit to come out of defrost

2. If unit does not come out of defrost cycle,

 

 

 

 

within one minute.

 

replace heat pump control.

 

 

 

 

 

 

 

 

 

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CHECKING TEMPERATURE SENSOR OUTSIDE UNIT CIRCUIT

1.Disconnect temperature sensor from board and from outdoor coil.

2.Use an ohmmeter and measure the resistance of the sensor. Also use ohmmeter to check for short or open.

3.Check resistance reading to chart of resistance use sensor ambient temperature. (Tolerance of part is

± 10%.)

4.If sensor resistance reads very low, then sensor is shorted and will not allow proper operation of the heat pump control.

5.If sensor is out of tolerance, shorted, open or reads very low ohms then it should be replaced.

TEMPERATURE "F" VS. RESISTANCE "R" OF TEMPERATURE SENSOR

F

R

F

R

F

R

F

R

 

 

 

 

 

 

 

 

-25.0

196871

13.0

56985

53.0

19374

89.0

7507

-24.0

190099

14.0

55284

52.0

18867

90.0

7334

-23.0

183585

15.0

53640

53.0

18375

91.0

7165

-22.0

177318

16.0

52051

54.0

17989

92.0

7000

-21.0

171289

17.0

50514

55.0

17434

93.0

6840

-20.0

165487

18.0

49028

56.0

16984

94.0

6683

-19.0

159904

19.0

47590

57.0

16547

95.0

6531

-18.0

154529

20.0

46200

58.0

16122

96.0

6383

-17.0

149355

21.0

44855

59.0

15710

97.0

6239

-16.0

144374

22.0

43554

60.0

15310

98.0

6098

-15.0

139576

23.0

42295

61.0

14921

99.0

5961

-14.0

134956

24.0

41077

62.0

14544

100.0

5827

-13.0

130506

25.0

39898

63.0

14177

101.0

5697

-12.0

126219

26.0

38757

64.0

13820

102.0

5570

-11.0

122089

27.0

37652

65.0

13474

103.0

5446

-10.0

118108

28.0

36583

66.0

13137

104.0

5326

-9.0

114272

29.0

35548

67.0

12810

105.0

5208

-8.0

110575

30.0

34545

68.0

12492

106.0

5094

-7.0

107010

31.0

33574

69.0

12183

107.0

4982

-6.0

103574

32.0

32634

70.0

11883

108.0

4873

-5.0

100260

33.0

31723

71.0

11591

109.0

4767

-4.0

97064

34.0

30840

72.0

11307

110.0

4663

-3.0

93981

35.0

29986

73.0

11031

111.0

4562

-2.0

91008

36.0

29157

74.0

10762

112.0

4464

-1.0

88139

37.0

28355

75.0

10501

113.0

4367

0.0

85371

38.0

27577

76.0

10247

114.0

4274

1.0

82699

39.0

26823

77.0

10000

115.0

4182

2.0

80121

40.0

26092

78.0

9760

116.0

4093

3.0

77632

41.0

25383

79.0

9526

117.0

4006

4.0

75230

42.0

24696

80.0

9299

118.0

3921

5.0

72910

43.0

24030

81.0

9077

119.0

3838

6.0

70670

44.0

23384

82.0

8862

120.0

3757

7.0

68507

45.0

22758

83.0

8653

121.0

3678

8.0

66418

46.0

22150

84.0

8449

122.0

3601

9.0

64399

47.0

21561

85.0

8250

123.0

3526

10.0

62449

48.0

20989

86.0

8057

124.0

3452

11.0

60565

49.0

20435

87.0

7869

 

 

12.0

58745

50.0

19896

88.0

7686

 

 

 

 

 

 

 

 

 

 

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FAN BLADE SETTING DIMENSIONS

Shown in Figure 17 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil.

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 17

FAN BLADE SETTING

TABLE 8

FAN BLADE DIMENSION

Model Dimension A

WH301 1.25"

WH361

The suction line temperatures in Table 9 are based upon 80ºF dry bulb/67ºF wet bulb (50 percent R.H.) temperature and rated airflow across the evaporator during cooling cycle.

TABLE 10

INDOOR BLOWER PERFORMANCE

CFM AT 230 VOLTS

 

 

WH301, WH361

 

 

 

E.S.P.

Low Speed

High Speed

 

 

 

 

 

 

In H2O

Dry Coil /

Wet Coil

Dry Coil / Wet Coil

.0

950 /

935

1,395 / 1,315

 

 

 

 

.1

930 /

915

1,340 / 1,270

 

 

 

 

.2

910 /

885

1,285 / 1,190

 

 

 

 

.3

855 /

830

1,205 / 1,100

 

 

 

 

.4

800 /

755

1,110 / 1,000

 

 

 

.5

--- / ---

1,005 / 870

 

 

 

.6

--- / ---

--- / ---

 

 

 

 

TABLE 11

CFM AND ESP

REMOVAL OF FAN SHROUD

1.Disconnect all power to 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.

REFRIGERANT CHARGE

The correct system R-22 charge is shown on the unit rating plate. Optimum unit performance will occur with a refrigerant charge resulting in a suction line temperature (6 inches from compressor) as shown in Table 9.

TABLE 9

SUCTION LINE TEMPERATURES

 

Rated

95 F OD

82 F OD

Model

Airflow

Temperature

Temperature

 

 

 

 

WH301

1,100

56 - 58

63 - 65

 

 

 

 

WH361

1,100

49 - 51

66 - 68

 

 

 

 

 

j

j

 

 

Rated

Rated

Recommended

Model

CFM

ESP

Airflow Range

 

 

 

 

WH301

1,000

.30

930 - 1,300

WH361

1,100

.30

930 - 1,350

 

 

 

 

Rated CFM and ESP on high speed tap

TABLE 12

MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

 

 

Front Outlet

Top Outlet

 

 

 

 

 

 

 

 

Low

High

Low

High

Model

Speed

Speed

Speed

Speed

 

 

 

 

 

 

 

A00

.50

.50

.50

.50

WH301

A05

.40

.50

.40

.50

WH361

A10

.35

.40

.25

.40

 

A15

.35

.40

NA

NA

 

 

 

 

 

 

 

B00

.50

.50

.50

.50

WH301

B06

.40

.50

NA

NA

WH361

B09

.35

.45

.30

.40

 

B15

.35

.45

NA

NA

 

 

 

 

 

 

 

C00

.50

.50

.50

.50

WH301

C06

.50

.50

NA

NA

WH361

C09

.30

.40

.35

.45

 

C15

.30

.40

NA

NA

 

 

 

 

 

 

Values shown are for units equipped with standard 1" throwaway filter or 1" washable filter. Derate ESP by

.15 for 2" pleated filter.

Manual

2100-193O

Page

24 of 26

TABLE 13

COOLING PRESSURE (PSI) – OUTDOOR TEMPERATURE °F

AIR TEMPERATURE ENTERING OUTDOOR COIL °F

 

Return Air

 

 

 

 

 

 

 

 

 

 

Model

Temperature

Pressure

75

80

85

90

95

100

105

110

115

 

 

 

 

 

 

 

 

 

 

 

 

 

75 deg DB

Low Side

76

78

80

81

83

84

85

87

88

 

62 deg WB

High Side

235

249

263

277

291

305

319

333

347

 

 

 

 

 

 

 

 

 

 

 

 

WH301

80 deg DB

Low Side

81

83

85

87

88

90

91

93

94

67 deg WB

High Side

241

255

269

284

298

312

327

341

356

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 deg DB

Low Side

88

90

92

93

95

97

98

100

101

 

72 deg WB

High Side

250

264

279

294

308

323

338

353

368

 

 

 

 

 

 

 

 

 

 

 

 

 

75 deg DB

Low Side

69

71

73

75

76

78

80

82

83

 

62 deg WB

High Side

210

226

242

257

273

290

306

323

339

 

 

 

 

 

 

 

 

 

 

 

 

WH361

80 deg DB

Low Side

73

76

78

80

82

84

85

87

89

67 deg WB

High Side

216

232

248

264

281

297

314

331

348

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 deg DB

Low Side

79

81

84

86

88

90

92

94

95

 

72 deg WB

High Side

223

240

256

273

290

308

325

342

360

 

 

 

 

 

 

 

 

 

 

 

 

TABLE 14

HEATING PRESSURE (PSI) – OUTDOOR TEMPERATURE °F

AIR TEMPERATURE ENTERING OUTDOOR COIL °F

 

Return Air

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

Temperature

Pressure

0

5

10

15

20

25

30

35

40

45

50

55

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH301

70o

Low Side

21

25

28

32

36

39

43

47

51

55

59

63

67

High Side

143

148

153

159

165

172

180

188

197

207

217

228

239

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WH361

70o

Low Side

22

25

28

31

34

38

42

46

50

55

60

65

70

High Side

145

152

159

167

177

186

197

208

220

233

246

260

275

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low side pressure ± 2 psig

High side pressure ± 5 psig

Tables are based upon rated CFM (airflow) across the evaporator coil and should be found under section titled “Refrigerant Charge” on Page 24 in manual. If there is any doubt as to correct charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.

Manual

2100-193O

Page

25 of 26

TABLE 15

OPTIONAL ACCESSORIES

MODEL DESCRIPTION

WH301-A

WH301-B

WH301-C

WH361-A

WH361-B

WH361-C

EHWH30-A05

Heater Packages

1

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHWH30-A10

Heater Packages

1

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHWH36-A05

Heater Packages

1

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

EHWH36-A10

Heater Packages

1

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

EHWH36-A15

Heater Packages

1

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

EHWH03-B06

Heater Packages

1

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

EHWH03-B09

Heater Packages

1

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

EHWH03-B15

Heater Packages

1

 

 

 

 

 

X

 

 

 

 

 

 

 

 

 

EHWH03-C06

Heater Packages

1

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

EHWH03-C09

Heater Packages

1

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

EHWH03-C15

Heater Packages

1

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

BOP-3

Blank Off Plate

 

X

X

X

X

X

X

 

 

 

 

 

 

 

 

BFAD-3

Barometric Fresh Air Damper

X

X

X

X

X

X

 

 

 

 

 

 

 

 

MFAD-3

Motorized Fresh Air Damper

X

X

X

X

X

X

 

 

 

 

 

 

 

 

CRV-3

Commercial Ventilator with Exhaust

X

X

X

X

X

X

 

 

 

 

 

 

 

 

EIFM-3

Economizer with Exhaust

X

X

X

X

X

X

 

 

 

 

 

 

 

 

WERV-A3A

Energy Recovery Ventilator

X

X

 

X

X

 

 

 

 

 

 

 

 

 

WERV-C3A

Energy Recovery Ventilator

 

 

X

 

 

X

 

 

 

 

 

 

 

 

CMH-3

Low Pressure Control (LPC)

X

X

X

X

X

X

 

 

 

 

 

 

 

 

CMH-7

Low Ambient Control (LAC)

X

X

X

X

X

X

 

 

 

 

 

 

 

 

 

CMH-9

LAC + LPC

 

X

X

X

X

X

X

 

 

 

 

 

 

 

 

CMH-14A

Outdoor Thermostat (ODT)

X

X

X

X

X

X

 

 

 

 

 

 

 

 

 

CMC-15

Start Kit (SK)

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

WMCB-05A

Circuit Breaker Kit

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WMCB-03B

Circuit Breaker Kit

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

WMPD-01

Circuit Breaker Kit

 

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

WMCB-06A

Circuit Breaker Kit

 

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

Manual

2100-193O

Page

26 of 26