Firstco R-410A Water Source Heat Pump Instruction Manual

Firstco R-410A Water Source Heat Pump

Product Information

Specifications

• Model: WSH6 009-072 Horizontal Series Water Source Heat Pump
• Installation, Operation, & Maintenance Manual: IOM 8003 Rev. A 5/23

Safety Considerations

1. READ THE ENTIRE MANUAL BEFORE STARTING THE INSTALLATION.
2. These instructions are intended as a general guide and do not supersede national, state, or local codes in any way.
3. Altering the product, improper installation, or the use of unauthorized factory parts voids all warranty or implied warranty.

RECOGNIZE THE FOLLOWING SAFETY NOTATIONS THROUGHOUT THIS MANUAL AND POSTED ON THE EQUIPMENT:

• Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
• Suggests important procedure steps to ensure proper installation, reliability, or operation.
• Indicates a potentially hazardous situation or unsafe practices that could result in severe personal injury or death and/or damage to property.
• This warning signifies potential electrical shock hazards that could result in personal injury or death.
• The CAUTION symbol indicates a potentially hazardous situation that may result in minor or moderate injury.
• Used to highlight suggestions, which may result in enhanced installation, reliability, or operation.

Installation

1. Before starting the installation, read the entire manual.
2. Ensure that national, state, and local codes are followed during installation.
3. Do not alter the product or use unauthorized factory parts.

Operation

1. Follow the startup instructions to ensure proper operation of the water source heat pump.
2. Label all wires before disconnecting when servicing controls. Reconnect wires correctly.
3. Verify proper operation after servicing.

Maintenance & Service

1. Regularly inspect and clean mechanical components and filtersto prevent clogging and damage to the system.
2. Improper servicing could result in dangerous operation, serious injury, death, or property damage.
3. Before servicing, disconnect all electrical power to the WSH6 water source heat pump.

Troubleshooting

If you encounter any issues with the product, refer to the troubleshooting section in the manual for guidance.

FAQ

Q: What should I do if I notice damage to the product upon delivery?
A: If you notice any evidence of rough handling or apparent damage to the product upon delivery, it is important to note it on the delivery receipt in the presence of the carrier’s representative. You should also immediately file a claim against the carrier.

Installation, Operation, & Maintenance Manual

IOM 8003 Rev. A 5/23
WSH6 009-072 Horizontal Series Water Source Heat Pump

WSH6 HORIZONTAL SERIES – IOM
COPYRIGHT
First Co. / AE-Air works to continuously improve its products and as a result, it reserves the right to change design and specifications without notice. The warranty may be void unless the Startup & Performance Checklist is completed and returned to the warrantor. If the HVAC unit is not installed properly, the warranty will be void, as the manufacturer cannot be held accountable for problems that stem from improper installation. ©2023 First Co. / AE-Air, 8273 Moberly Lane, Dallas, TX 75227

WARNING TO INSTALLER, SERVICE PERSONNEL AND OWNER
Altering the product or replacing parts with non-authorized factory parts voids all warranty or implied warranty and may result in adverse operational performance and/or a possible hazardous safety condition to service personnel and occupants. Company employees and/or contractors are not authorized to waive this warning.

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WSH6 HORIZONTAL SERIES ­ IOM

TABLE OF CONTENTS
SAFETY CONSIDERATIONS MODEL NOMENCLATURE GENERAL INFORMATION INTRODUCTION STORAGE SHIPPING & PACKAGE LIST UNIT INSPECTION CHECKLIST UNIT DIMENSIONAL DATA UNIT PHYSICAL DATA ELECTRICAL DATA INSTALLATION ELECTRICAL APPLICATION CONTROLS PERFORMANCE DATA WIRING DIAGRAMS CIRCUIT SCHEMATIC STARTUP INSTRUCTIONS STARTUP & PERFORMANCE CHECKLIST INSTRUCTIONS MAINTENANCE & SERVICE TROUBLESHOOTING SUPPORT/REFERENCE MATERIAL STARTUP & PERFORMANCE CHECKLIST NOTES

WSH6 HORIZONTAL SERIES – IOM
4-5 6 7 7 8 8 9
10-11 12 13
14-21 22
23-25 26-31 32-43 44-48
49 49-50
50 51 52-55 56 57 58-59

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SAFETY CONSIDERATIONS

1. READ THE ENTIRE MANUAL BEFORE STARTING THE INSTALLATION. 2. These instructions are intended as a general guide and do not supersede national, state, or local codes in any way. 3. Altering the product, improper installation, or the use of unauthorized factory parts voids all warranty or implied warranty
and may result in adverse operation and/or performance or may result in hazardous conditions to service personnel and occupants. Company employees or contractors are not authorized to waive this warning. 4. This product should only be installed and serviced by a qualified, licensed, and factory authorized installer or service agency. 5. All “kits” and “accessories” used must be factory authorized when modifying this product. Refer and follow instructions packaged with the kits or accessories when installing.

RECOGNIZE THE FOLLOWING SAFETY NOTATIONS THROUGHOUT THIS MANUAL AND POSTED ON THE EQUIPMENT:

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Suggests important procedure steps to insure proper installation, reliability, or operation.

Indicates a potentially hazardous situation or unsafe practices that could result in severe personal injury or death and/or damage to property.

This warning signifies potential electrical shock hazards that could result in personal injury or death.

The CAUTION symbol indicates a potentially hazardous situation that may result in minor or moderate injury.

Used to highlight suggestions, which may result in enhanced installation, reliability or operation.

Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury, death or property damage.
Before servicing, disconnect all electrical power to the WSH6 water source heat pump.
When servicing controls, label all wires prior to disconnecting. Reconnect wires correctly.

Verify proper operation after servicing.

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SAFETY CONSIDERATIONS CONTINUED

WSH6 HORIZONTAL SERIES – IOM

Mechanical components and filters can become clogged with dirt and debris, which can cause damage to the system. The manufacturer does not warrant equipment subjected to abuse. Construction debris can void warranties and liability for equipment failure, personal injury, and property damage.

Material in this shipment has been inspected at the factory and released to the transportation agency in good condition. When received, a visual inspection of all cartons should be made immediately. Any evidence of rough handling or apparent damage should be noted on the delivery receipt in the presence of the carrier’s representative. If damage is found, a claim should be immediately filed against the carrier.

DO NOT USE FOR HEATING AND COOLING BUILDINGS OR STRUCTURE UNDER CONSTRUCTION!

Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury or loss of life. Refer to the user’s information manual provided with this water source heat pump. Installation and materials, service must be performed by a qualified installer, or service agency.

Installation and service must be performed by a licensed professional installer (or equivalent), or service agency. Attempting to install or repair this unit without such background may result in product damage, personal injury or death.

These instructions are intended as an aid to qualified, licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions thoroughly before attempting installation or operation. Failure to follow these instructions may result in improper installation, adjustment, service or maintenance possibly resulting in fire, electrical shock, property damage, personal injury or death.
WSH6 HORIZONTAL SERIES ­ IOM

Disconnect all power before servicing. Failure to do so may result in property damage, personal injury, or death.

Use care when handling compressors. Some surfaces could be hot!

Compressors should NOT be used to evacuate the air conditioning system. Vacuums this low can cause internal electrical arcing resulting in a damaged or failed compressor.

The unit must be permanently grounded. Failure to do so can cause electrical shock resulting in severe personal injury or death.

“USE COPPER SUPPLY WIRES ONLY!”
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MODEL NOMENCLATURE

FIGURE 1 ­ Model Nomenclature

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GENERAL INFORMATION

DO NOT use these units as a source of heating or cooling during the construction process. Mechanical components and filters can become clogged with dirt and debris, which can cause damage to the system.
The manufacturer does not warrant equipment subjected to abuse.

Before servicing equipment, ALWAYS turn off all power to the unit. There may be more than one disconnect switch. Electrical shock can cause injury or death.
Clear surrounding area of all tools, equipment, and debris before operating this unit.
These instructions are provided for the installation of the WSH6 water source heat pump specifically. For any other related equipment, refer to the appropriate manufacturer’s instructions.

This water source heat pump must never be operated under any circumstances without an air filter in place.

Material in this shipment has been inspected at the factory and released to the transportation agency in good condition. When received, a visual inspection of all cartons should be made immediately. Any evidence of rough handling or apparent damage should be noted on the delivery receipt in the presence of the carrier’s representative. If damage is found, a claim should be immediately filed against the carrier.
The WSH6 water source heat pump is designed for indoor installation only. Installation of this equipment, wiring, ducts, and any related components must conform to current agency codes, state laws, and local codes. Such regulations take precedence over general instructions contained in this manual.

WSH6 HORIZONTAL SERIES – IOM

Extreme caution must be taken that no internal damage will result from screws that are drilled into the cabinet.

INTRODUCTION

The HydroTech WSH6 series water to air heat pump provide the best combination of performance, efficiency and reliability in a compact form factor. The WSH6 series comes standard with ECM blower motors for high efficiency and comfort. All WSH6 models feature double compressor vibration isolation for quiet operation, easy to remove blower housing for quick service, as well as a single compressor designs to lower system complexity and improve serviceability.
All WSH6 models are certified to AHRI ISO Standard 132561. The WSH6 models are designed to operate with fluid temperatures between 50°F to 110°F in cooling mode and 50°F to 90°F in heating mode for continuous operation. For operation below 50°F or above 90°F entering water temperature, extended range (insulated tubing) option is needed, and sufficient water flow is required to prevent freezing. Antifreeze solution is required for any application with entering water below 50 degree F.
Cooling Tower/Boiler and Geo Thermal applications should have sufficient antifreeze solution when required to protect against extreme conditions and equipment failure. Frozen water coils are not covered under warranty.
These installation instructions are intended as a general guide only, for use by an experienced, qualified contractor.

Do not use this water source heat pump during any phase of construction.

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STORAGE
Equipment should be stored in a clean dry, conditioned area with maximum temperatures up to 120°F [48.89°C] and minimum temperatures to 32°F [0°C]. Units should be stored upright as seen in FIGURE 2 ­ Standard Packaging and in an indoor environment. It is recommended to leave packaging on the unit until the installation is to begin.

Do not stack more than THREE units for storage purposes. Store units how they are shipped, keeping them crated and on their pallets for protection. Failure to follow these instructions may result in improper installation, adjustment, service or maintenance, property damage, personal injury or death.
DO NOT operate these units during the construction process. Mechanical components and filters could become clogged with dirt and debris, which can cause damage to the system.
The manufacturer does not warrant equipment subjected to abuse.
SHIPPING & PACKAGE LIST

Material in this shipment has been inspected at the factory and released to the transportation agency in good condition. When received, a visual inspection of all cartons should be made immediately. Any evidence of rough handling or apparent damage should be noted on the delivery receipt in the presence of the carrier’s representative. If damage is found, a claim should be immediately filed against the carrier.
SHIPPING INSTRUCTIONS
WSH6 units must remain in the upright position as seen in FIGURE 2 ­ Standard Packaging throughout the shipping and handling process to maintain a proper level of oil in the compressor.

Shrink-wrap is located around the unit for protection. Remove before installation.

FIGURE 2 ­ Standard Packaging
PACKAGE LIST
The units will be shipped with the following items:
1- WSH6 unit sizes 009-036: A- Shipping/Hanger brackets a. Screws (4) b. Washer (4) c. Vibration Isolation Grommet (4) WSH6 unit sizes 042-72: B- Shipping/Hanger brackets a. Screws (5) b. Washer (5) c. Vibration Isolation Grommet (5)
2- Literature package A- IOM – Installation & Operations Manual
Check the unit for shipping damage; if found, immediately contact the last carrier.

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WSH6 HORIZONTAL SERIES ­ IOM

UNIT INSPECTION CHECKLIST

Complete the inspection procedures below before preparing unit for installation:

1. Visually inspect unit for any shipping damage. Damage must be reported immediately to the shipping company to make a claim.
2. Ensure that the carrier makes proper notation of any shortages or damage on all copies of the freight bill and completes a common carrier inspection report.
3. Verify that unit nameplates on the data label match the sales order or bill of lading (including, unit configuration, size and voltage).
4. Immediately before installation, remove unit front panel and verify that all electrical connections are tight and that there are no loose wires.
5. Check to make sure that the refrigerant piping is free from any kinks and there is no interference between unit piping and sheet metal, electrical wires or other piping.
6. Check the correct blower rotation, make sure it spins freely within the housing and that there are no obstructions between the wheel and housing. The wheel can sometimes come loose in shipping.
7. Ensure that the evaporator distributor tubes are not touching one in another and that they are over the drain pan.
8. Check the air-coil fins for any damage during shipping. 9) Ensure that the shipping screws and shipping brackets
   are removed from the unit. Refer to FIGURE 3 ­ Standard Packaging with Brackets ­ Front View & FIGURE 4 ­ Standard Packaging with Brackets ­ Back View for more information. 10) Prior to starting the unit, it is necessary to fully loosen the compressor bolts, and re-tighten them finger tight. 11) When the unit has less than 100 operational hours and the coils have not had sufficient time to be “seasoned”, it is necessary to clean the dry coil with a mild surfactant such as Calgon to remove the oils left by manufacturing processes.

Check the unit nameplate for correct voltage with the plans before installing the equipment. Also, make sure all electrical ground connections are made in accordance with local code.

WSH6 HORIZONTAL SERIES – IOM
FIGURE 3 ­ Standard Packaging with Brackets ­ Front View FIGURE 4 ­ Standard Packaging with Brackets ­ Back View

WSH6 HORIZONTAL SERIES ­ IOM

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UNIT DIMENSIONAL DATA

FIGURE 5 ­ Unit Dimensions

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UNIT DIMENSIONAL DATA CONTINUED

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FIGURE 6 ­ Unit Configurations

MODEL
WSH6009 WSH6012 WSH6018 WSH6024 WSH6030 WSH6036 WSH6042 WSH6048 WSH6060 WSH6072

OVERALL CABINET

Width Depth Height

A

B

C

22.1 41.1 17.0

22.1 41.1 17.0

22.1 48.1 17.0

25.1 60.1 21.0

25.1 60.1 21.0

25.1 60.1 21.0

25.1 74.1 21.0

25.1 74.1 21.0

25.1 74.1 21.0

25.1 84.1 21.0

DIMENSIONAL DATA

WATER CONNECTIONS

Loop In/Out

D

E

F

14.6

4.9

1.6

14.6

4.9

1.6

14.6

4.9

1.6

18.6

4.9

1.6

18.6

4.9

1.6

18.6

4.9

1.6

18.6

4.9

1.6

18.6

4.9

1.6

18.6

4.9

1.6

18.6

4.9

1.6

Table 1 ­ Unit Dimensional Data

LOOP IN/OUT
FTP
3/4 3/4 3/4 3/4 3/4 3/4 1 1 1 1

ELECTRICAL KNOCKOUTS

G

H

I

J

1.5

11.0

1.2

9.0

1.5

11.0

1.2

9.0

1.5

11.0

1.2

9.0

17.5 15.0

1.2

13.0

17.5 15.0

1.2

13.0

17.5 15.0

1.2

13.0

17.5 15.0

1.2

13.0

17.5 15.0

1.2

13.0

17.5 15.0

1.2

13.0

17.5 15.0

1.2

13.0

MODEL
WSH6009 WSH6012 WSH6018 WSH6024 WSH6030 WSH6036 WSH6042 WSH6048 WSH6060 WSH6072

DIMENSIONAL DATA

DISCHARGE DUCT FLANGE

RETURN DUCT FLANGE

MOUNTING BRACKETS CENTER DISTANCES

K

L

M

N

O

P

Q

R

S

T

U

10.1 3.9 9.0 5.6 20.0 16.2 2.0 41.0 24.2 19.9 –

10.1 3.9 9.0 5.6 20.0 16.2 2.0 41.0 24.2 19.9 –

4.6 11.4 9.7 4.8 25.0 16.2 2.0 48.0 24.2 19.9 –

6.9 11.5 10.7 5.7 30.0 20.3 2.0 60.0 27.2 22.9 –

6.9 11.5 10.7 5.7 30.0 20.3 2.0 60.0 27.2 22.9 –

6.9 11.5 10.7 5.7 30.0 20.3 2.0 60.0 27.2 22.9 –

7.4 11.5 10.7 5.7 40 20.3 2.0 74.0 27.2 22.9 27.5

7.4 11.5 13.1 4.6 40 20.3 2.0 74.0 27.2 22.9 27.5

6.0 12.5 13.3 4.5 40 20.3 2.0 74.0 27.2 22.9 27.5

6.0 12.5 13.3 4.5 50 20.3 2.0 84.0 27.2 22.9 27.5 Table 2 ­ Unit Dimensional Data Continued

CONDENSATE 3/4″ FTP
AA BB 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1 3.4 1.1

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UNIT PHYSICAL DATA

WSH6 MODELS UNIT INFORMATION Compressor Type (Qty) Factory Charge (R410A) (oz) Fan Motor Type (Qty) Fan Motor HP Blower Wheel Size (D x W) ­ (in) Water Connection FPT (in) COAX Volume (US Gallons) Condensate Connection FPT (in) Air Coil Dimension (H x W) in. Filter Size (H x W) in. Filter (Qty) Operating Weight (lbs) Shipping Weight (lbs)
*3/4HP for 460V Models

PHYSICAL DATA 009 012 018 024 030 036 042 048 060 072

Rotary (1)

Scroll (1)

22.2 32.5 42.5 50.9 54.1 62.1 86.1 80.9 100.3 138.9

ECM (1) ECM (1) ECM (1) ECM (1) ECM (1) ECM (1) ECM (1) ECM (1) ECM (1) ECM (1)

1/4

1/4

1/3 1/2 1/2 1/2* 3/4

3/4

1

1

6.75 x 7 6.75 x 7 9 x 7 9 x 8 10 x 8 10 x 8 10 x 8 10 x 10 11 x 10 11 x 10

3/4

3/4

3/4

3/4

3/4

3/4

1

1

1

1

0.12 0.14 0.24 0.36 0.43 0.53 0.62 0.88 0.88 1.08

3/4

3/4

3/4

3/4

3/4

3/4

3/4

3/4

3/4

3/4

16 x 15.5 16 x 15.5 16 x 22 20 x 25 20 x 25 20 x 25 20 x 35 20 x 35 20 x 35 20 x 45

16 x 20 16 x 20 16 x 25 20 x 30 20 x 30 20 x 30 20 x 20 20 x 20 20 x 20 20 x 25

1

1

1

1

1

1

2

2

2

2

137 142 189 245 254 271 335 356 365 404

159 164 214 289 289 306 378 399 408 450 Table 3­ Physical Data

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ELECTRICAL DATA

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MODEL WSH6009 WSH6012 WSH6018 WSH6024
WSH6030
WSH6036
WSH6042
WSH6048
WSH6060 WSH6072

ELECTRICAL DATA

VOLTAGE-PH-HZ COMPRESSOR

BLOWER MOTOR

RLA LRA FLA HP

208/230-1-60 3.7 22 2.3 1/4

265-1-60

3.5 22 2.3 1/4

208/230-1-60 4.7 26 2.3 1/4

265-1-60

3.8 23 2.3 1/4

208/230-1-60 7 38 2.8 1/3

265-1-60

6 30 2.6 1/3

208/230-1-60 16.8 55 4.6 1/2

265-1-60

9.6 54 3.6 1/2

208/230-3-60 7.7 55.4 4.6 1/2

460-3-60

3.6 28 3.2 3/4

208/230-1-60 12.8 67.8 4.6 1/2

265-1-60 10.9 60 3.6 1/2

208/230-3-60 8.3 58 4.6 1/2

460-3-60

4 38 3.2 3/4

208/230-1-60 15.4 83.9 4.6 1/2

265-1-60 13.5 72 3.6 1/2

208/230-3-60 10.4 73 4.6 1/2

460-3-60

5.8 38 3.2 3/4

208/230-1-60 19.2 123.9 6.3 3/4

265-1-60

16 87 4.9 3/4

208/230-3-60 13.5 88 6.3 3/4

460-3-60

6 44 3.2 3/4

208/230-1-60 19.6 130 6.3 3/4

265-1-60 16.3 98 4.9 3/4

208/230-3-60 13.7 83.1 6.3 3/4

460-3-60

6.2 41 3.2 3/4

208/230-1-60 24.4 144.2 7.6 1

265-1-60 19.9 130 6.6 1

208/230-3-60 16 110 7.6 1

460-3-60

7.8 52 4 1

208/230-1-60 30.8 178 7.6 1

208/230-3-60 19.6 136 7.6 1

460-3-60

8.2 66.1 4 1

Table 4 ­ Electrical Data

MIN.

MAX.

CIRCUIT CIRCUIT

AMPACITY PROTECTION

7

15

7

15

9

15

8

15

12

15

11

15

26

40

16

25

15

20

8

15

21

30

18

25

15

20

9

15

24

35

21

30

18

25

11

15

31

45

25

40

24

35

11

15

31

50

26

40

24

35

11

15

39

60

32

50

28

40

14

20

47

70

33

50

15

20

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INSTALLATION
REQUIREMENTS
Follow manufacturer’s installation instructions, as well as local and municipal building codes.
INSTALLATION PRECAUTIONS

Always wear all appropriate personal protection Equipment when installing and servicing these units.

Use multiple people when moving and installing these units. Failure to do so could result in injury or death.

Contact with metal edges and corners can result injury. Protective gloves should be worn when handling. Exercise caution when installing and servicing unit.
Observe the following precautions for typical installation: Always use proper tools and equipment. No wiring or any work should be attempted without
first ensuring the unit is completely disconnected from the power source and locked out. Also, verify that a proper permanent and uninterrupted, ground connection exists prior to energizing power to the unit. Review unit nameplate and wiring diagram for proper voltage and control configurations. This information may vary from unit to unit.

When the unit is in operation components are rotating at high speeds and caution should be taken.

When soldering and brazing, it is recommended to have a fire extinguisher readily available. When soldering and brazing close to valves or sensitive components, heat shields or wet rags are required to prevent damage to the valves or components.

Insulation is installed in the unit to provide a barrier between varying atmospheres outside and within the unit. If insulation is damaged condensation can occur and can lead to corrosion, component failure, and possible property damage. Damaged insulation must be repaired prior to the operation of the unit. Insulation will lose its effectiveness and value when wet, torn, separated, and/or damaged.

When servicing this equipment, because of high pressures, make sure the reversing valve, expansion device, filter drier and other components are specifically designed for R-410A refrigerant.
ONLY USE service equipment specifically designated for use with R-410A.

R-410A can become combustible if mixed with air at elevated temperature and/or pressure. Failure to follow this warning could result in property damage and personal injury or death.

Do not operate this equipment without an air filter.

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INSTALLATION CONTINUED
UNIT CLEARANCE REQUIREMENTS

WSH6 HORIZONTAL SERIES – IOM

Left Return Back Discharge

Right Return Back Discharge

Left Return Straight Discharge

Right Return Straight Discharge

FIGURE 7 ­ Unit Clearance Requirements

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INSTALLATION CONTINUED
UNIT CLEARANCE REQUIREMENTS/MOUNTING DETAILS

Notes:
1. While clear access to all removable panels is not required, installer should take
care to comply with all building codes and allow adequate clearance for future
field service. 2. CCP and BSP requires 2′ service access. 3. Blower service access is through back panel on straight discharge units or through
panel opposite air coil on back discharge units. 4. ASP are removable panels that provide additional access to the units’ interior.
Clear access to ASP panels is not required and they are not to be used in place of
the mandatory CCP and BSP panels.

Legend:
CCP = Control/Compressor Access
Panel
BSP = Blower Service Panel ASP ­ Additional Service Panel (not required)

MOUNTING DETAILS
Locate the unit in an area that provides minimum clearance accesses as specified by FIGURE 7 ­ Unit Clearance Requirements. Also, refer to this figure for detailed information on unit dimensional sizes. Consider all additional clearances needed for water connections, electrical connections, duct connections and sufficient return airflow.
UNITS ARE ONLY INTENDED FOR INDOOR INSTALLATION
DO NOT locate unit in areas subject to freezing temperatures or where high humidity levels could cause cabinet condensation. WSH6 units are available in right- and left-hand configurations. Units should be mounted level with a proper drain pan pitch toward the condensate drain as seen in FIGURE 8 ­ Horizontal Unit Pitch & Filter Rail Detail. Filter rails are factory installed, remove converter bar for 2″ filter installation.

It is important to ensure the unit is securely mounted and that the mounting structure is sufficient to support the operating weight of the equipment. Place and size all anchors to ensure a safe and durable installation.

FIGURE 8 ­ Horizontal Unit Pitch & Filter Rail Detail

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INSTALLATION CONTINUED
MOUNTING DETAILS CONTINUED

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FIGURE 9 ­ Mounting Installation

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INSTALLATION CONTINUED
MOUNTING DETAILS CONTINUED
WSH6 units are typically installed above a false ceiling or in a ceiling plenum. Each unit is suspended from the ceiling by 4 or 5 thread rods. The rods are attached to the unit corners by a hanger bracket through a rubber isolator. Refer to FIGURE 8 ­ Horizontal Unit Pitch & Filter Rail Detail, & FIGURE 9 ­ Mounting Installation.
WSH6 units have 4 or 5 hanger brackets attached at the factory, one at each corner. The hanger vibration kit is located at the blower opening area. The kit contains vibration isolation grommets, washers, and screws. Insert the all-thread hanging rod through the bracket, vibration isolation grommet, washers and double nuts at the end of the rod as shown in FIGURE 9 ­ Mounting Installation. There should be a total of 4 or 5 rods. Ensure that the unit is approximately level and that the threaded rod extends past the nut. Pitch the unit toward the drain as shown in as shown in to FIGURE 8 ­ Horizontal Unit Pitch & Filter Rail Detail to improve the condensate drainage.
A horizontal unit should be positioned to allow for removal of the filters and access panels. Units should be located directly below a structural member, so that it is securely anchored. The filter needs to be slid out and sufficient space must be provided to allow this. Do not install the unit above any piping or electrical raceways. Avoid installing units directly above occupied spaces. This will minimize possible disruption to the occupants if maintenance or service is required as well as keeping a potential source of noise out of the area.
BLOWER FIELD CONVERSION

FIGURE 10 ­ Field Blower Conversion

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INSTALLATION CONTINUED
BLOWER FIELD CONVERSION

WSH6 units can be field converted between side (straight) and end discharge. Due to the necessary of refrigeration copper piping changes, it is not possible to field convert left return air to right return air models or vice versa.
Field conversion is best done on the ground before hanging.
1. Remove four screws and the Panel Plate. 2. Remove four screws holding the Blower Panel. 3. Rotate the Blower Panel 180° and slide in where
Panel Plate used to be. Screw in to secure the Blower Panel. 4. Place in the Panel Plate at the side and secure it with the remaining screws. FIGURE 10 ­ Field Blower Conversion shows straight to end discharge conversion. For end to straight discharge conversion, reverse the order of the pictures.
PIPING NOTES

Prior to making piping connections, contractor must clean and flush water loop system. Failure to clean/flush system may result in excessive noise, tripping, and premature component failure.
1. Flush all field piping prior to connection to clear all debris.
2. Open all valves (mid-way for hand valves, manually open motorized valves) prior to soldering and brazing. Use proper heat shields to protect valve bodies.
3. When soldering or brazing to the unit, it is recommended to have a fire extinguisher readily available.
4. Use proper soldering and brazing techniques to protect valve bodies and unit components.
5. Avoid rapid quenching of soldered joints to prevent weakening.

WSH6 HORIZONTAL SERIES – IOM
6. Make provisions for expansion and contraction of piping systems to provide movement with temperature changes. Failure to make proper provisions will result in damage and failure of piping, fittings, and valves throughout the system.
7. DO NOT insulate the heads or motorized portion of control valves. Excessive heat build-up can cause damage and affect proper operation of the system.
8. Consider electrical routing when installing field piping. 9. Observe all regulations and codes governing
installation of piping. 10. When all connections are complete, pressure test the
system, and repair any leaks or faulty joints. Hydronic systems are not designed to hold pressurized air and should only be tested with water. Failure to observe this note could damage the system.
PIPING INSTALLATION
All piping must be adequately sized to meet the designed water flow as specified for the specific application, and must adhere to all applicable codes. Piping connections on the equipment are not necessarily indicative of the proper supply and return line sizes.
On units with plastic drain pans, the drain connection must be made hand tight only.
Chilled water piping must be properly insulated to prevent condensation and potential property damage. It is also recommended that all piping be insulated to prevent freezing in unconditioned spaces.

Do not bend or kink supply lines or hoses. For all supply lines or hoses of 1-1/2″ OD or greater, use proper sized fitting is recommended to prevent piping damage and potential restrictions in water flow.

For all applications, 50°F minimum entering water temperature and rated water flow is required to prevent freezing. Antifreeze solution is required for any application with entering water below 50°F. Frozen water coils are not covered under warranty.

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INSTALLATION CONTINUED
PIPING INSTALLATION

All manual flow valves used in the system must be ball valves. Globe and gate valves must not be used due to high pressure drop and poor throttling characteristics. Never exceed the recommended water flow rates. Serious erosion or damage of the water to refrigerant heat exchanger could occur.

When anti-freeze is used in the loop, insure that it is compatible with the Teflon tape that is applied.
The WSH6 water source heat pump are designed to operate with the entering liquid temperature between 50°F and 110°F. With the extended range option, the heat pump model can operate with entering liquid temperatures between 50-110°F. Below 50°F. antifreeze solution must be used to prevent freezing. Frozen water coils are not covered under warranty.

Do not allow hoses to rest against structural building components. Compressor vibration may be transmitted through the hoses to the structure, causing unnecessary noise complaints.
Always check carefully for water leaks and repair appropriately. Units are equipped with female pipe thread fittings. Consult the specification sheets for sizes. Teflon tape should be used when connecting water piping connections to the units to insure against leaks and possible heat exchanger fouling.
Do not over tighten the pipe connections. Flexible hoses should be used between the unit and rigid piping to avoid vibration transmission into the structure.
Ball valves should be installed in the supply and return lines for unit isolation and unit water flow balancing. Pressure / temperature ports are recommended in both the supply and return lines for system flow balancing. Water flow can be accurately set by measuring the water side pressure drop of the water to refrigerant heat exchanger.

Water piping exposed to extreme low ambient temperatures is subject to freezing and possible rupture. Proper prevention should be taken to prevent pipe freezing or equipment damage or failure may occur. Failure to follow this warning could result in property damage.

Ground loop applications require extended range equipment and optional refrigerant/water circuit insulation.

Geothermal closed loop system operation of a WSH6 water source heat pump unit on a closed loop application requires the extended range option.
ANTIFREEZE
Anti-freeze solutions must be utilized when low loop temperatures are expected to occur. In areas where entering loop temperatures drop below 50°F or where piping will be routed through areas subject to freezing, antifreeze is needed. Alcohols and glycols are commonly used as antifreeze agents. Freeze protection should be maintained to 15°F below the lowest expected entering loop temperature. For example, if the lowest expected entering loop temperature if 30°F, the leaving loop temperature would be 22°F to 25°F. Therefore, the freeze protection should be at 15°F (30°F-15°F=15°F).
LOW WATER TEMPERATURE CUTOUT SELECTION
The Digital Control Module allows the field selection of low water (or water- antifreeze solution) temperature limit by clipping jumper JW1 and JW2, which changes the sensing temperature associated with thermistor CO1 and CO2 respectively. Note that the CO1 thermistor is located on the refrigerant line between the coaxial heat exchanger and expansion device (TXV). Therefore, CO1 is sensing refrigerant temperature, not water temperature, which is a better indication of how water rate/temperature is

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WSH6 HORIZONTAL SERIES ­ IOM

INSTALLATION CONTINUED
LOW WATER TEMPERATURE CUTOUT SELECTION CONTINUED
affecting the refrigeration circuit. The factory setting for CO1 is for systems using water (30°F [-1.1°C] refrigerant temperature). In low water temperature (extended range) applications with antifreeze (most ground loops), jumper JW1 should be clipped to change the setting to10°F [-12.2°C] refrigerant temperature, a more suitable temperature when using an antifreeze solution. All units operating with entering water temperatures below 50°F [10°C] must include the optional water/refrigerant circuit insulation package to prevent internal condensation.

Disconnect power BEFORE the jumper wires are clipped. Failure to do so could result in equipment and/or property damage.

For all applications, 50°F minimum entering water temperature and sufficient water flow is required to prevent freezing. Antifreeze solution is required for any application with an entering water temperature below 50°F or, if either JW1 or JW2 cut-out limits are set to 10°F (clipped). Failure to follow this waring could result in heat exchanger, equipment, or property damage.
CONDENSATE DRAINAGE
Condensate drain lines must be properly installed with adequate slope away from unit to ensure proper drainage. A minimum trap of 1.5 inches must be installed to isolate the negative pressures of the drain pan from the drain line. Refer to Figure 11 ­ Condensate Drainage for schematic information on the condensate drain lines.

Check the condensate overflow sensor for proper operation and adjust if necessary. Final field adjustments ensures proper operation to avoid property damage.

On units with plastic drain pans, the drain connection must be made hand tight only.

WSH6 HORIZONTAL SERIES – IOM

Both the supply and return water lines will sweat if subjected to low water temperature. These lines should be insulated to prevent water damage to the property.

Units equipped with the economizer option must have a separate externally trapped drain line for condensate removal.
Insulation is not required on loop water piping except where the piping runs through unconditioned areas, outside the building or when the loop water temperature is below the minimum expected dew point of the pipe ambient conditions. Insulation is required if loop water temperature drops below the dew point. Units are supplied with either a copper or optional cupronickel water to refrigerant heat exchangers. Copper is adequate for ground water that is not high in mineral content. Should your well driller express concern regarding the quality of the water or should any known hazards exist in your area then we recommend proper testing to assure the well water quality is suitable for use with water source equipment. In conditions anticipating moderate scale formation or in brackish water a cupro-nickel heat exchanger is recommended.
FIGURE 11 ­ Condensate Drainage

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ELECTRICAL HIGH VOLTAGE

Disconnect all power supplies before servicing. Lock out/tag out to prevent accidental electrical shock. NOTE: There may be multiple power sources supplying the unit.

Use copper conductors only. Install all parts and panels before operation of unit. Failure to follow these warnings can result in injury or death.
All wiring must comply with local and national code requirements. Units are provided with wiring diagrams and nameplate data to provide information required for necessary field wiring.
The WSH6 water source heat pumps are provided with a class 2 transformer for 24VAC control circuits. Should any add-on accessory or component also have a class 2 transformer furnished, care must be taken to prevent interconnecting outputs of the two transformers by using a thermostat with isolating contacts.

Connect ground wire to ground terminal marked “GND”. Failure to do so can result in injury or death.

Any device that has been furnished by the factory for field installation must be wired in strict accordance with the associated wiring diagram. Failure to do so could damage components and void warranties.

208-230 VOLT OPERATION

All 208-230 Volt units are factory wired for 230 Volt

operation.

For

208

Volt

operation,

moving/changing/rewiring the line voltage tap on the 24

Volt control transformer is required. See note 3 on the

wiring diagram for instruction.

LOW VOLTAGE
THERMOSTAT A standard 24 VAC Heat Pump thermostat is required that will operate the reversing valve in the cooling mode. Thermostat connections and their functions are below in FIGURE 12 ­ Thermostat Connections as follows:
C ­ Transformer 24VAC Common O ­ Reversing Valve (energized in cooling) Y ­ Compressor Contactor R ­ Transformer 24VAC Hot G ­ Evaporator Blower
FIGURE 12 ­ Thermostat Connections
THERMOSTAT INSTALLATION
The Thermostat should be located on an interior wall in a larger room, away from supply duct draft. Position the thermostat back plate against the wall so that it appears level and so the thermostat wires protrude through the middle of the back plate mounting holes and drill holes with a 3/16″ (5mm) bit. Install supplied anchors and secure plate to the wall. Thermostat wire must be 18 AWC wire.

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WSH6 HORIZONTAL SERIES ­ IOM

APPLICATION
COOLING TOWER/BOILER APPLICATION
To ensure optimum cooling and heating performance, the cooling tower and boiler loop temperature should be maintained between 55-75°F in the heating mode and 6095°F in the cooling mode. In the cooling mode, heat is rejected from the heat pump’s refrigerant into the water loop. A cooling tower and/or boiler may be required to maintain proper water temperature within the water loop. In an open cooling tower, chemical water treatment is mandatory to ensure water is free of corrosive materials
In heating mode, heat is absorbed from the water loop into the heat pump’s refrigerant. A boiler may be utilized to maintain the proper water temperature within the loop.

A boiler may be required in the water loop to maintain the loop water temperature between 55-75°F. Failure to maintain proper water loop temperatures could result in equipment failure and property damage, and void warranties.
A secondary heat exchanger (plate frame between the unit and the open cooling tower) may also be used. It is imperative that all air is eliminated from the closed loop side of the heat exchanger to prevent condenser fouling.

Use copper conductors only. Install all parts and panels before operation of unit. Failure to follow these warnings can result in injury or death.

The manufacturer does NOT WARRANT equipment subjected to abuse. Dirt, piping chips or other foreign material can cause damage or failure to the water or to refrigerant heat exchanger.
No unit should be connected to the supply or return piping until the water system has been completely cleaned and flushed to remove dirt, piping chips or other foreign material. Supply and return hoses should be connected together during this process to ensure the entire system is properly flushed. After the cleaning and flushing has taken place the unit may be connected to the water loop and should have all valves adjusted to supply the proper flow

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rate for the unit. Nominal flow rate is 3 GPM per 12,000 BTUH of cooling.
EXTENDED RANGE OPERATION Piping systems expected to utilize water temperature below 50°F require the extended range option, which includes closed cell installation on all piping surfaces to eliminate condensation. This application requires sufficient antifreeze solution to prevent the water loop against extreme temperature conditions and condenser coil freezing. Frozen condenser coil are not covered under warranty. A boiler may be required to maintain the minimum water temperature within the loop.

Connect ground wire to ground terminal marked “GND”. Failure to do so can result in injury or death.

Any device that has been furnished by the factory for field installation must be wired in strict accordance with the associated wiring diagram. Failure to do so could damage components and void warranties.
CLOSED LOOPS
Failure to maintain proper water loop temperatures could result in equipment failure and property damage, and void warranties. Consult the factory when running entering water temperatures below 50°F as additional pipe insulation may be required to avoid excessive sweating inside the unit. For applications below 50°F it is imperative that the system be operated with antifreeze solution. When a secondary heat exchanger is used (i.e. plate to plate; closed loop system) it is imperative that all air is purged from the system to prevent condenser fouling.

The entire water loop must be completely cleaned and flushed of all debris prior to final connections and unit
operation.
Valves should be adjusted to supply proper water flow rated for the unit.
Failure to do so will VOID ALL FACTORY WARRANTY.

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APPLICATION CONTINUED
WATER WELL APPLICATION
REQUIREMENTS: 50° Minimum Entering Water Temperature Cupronickel Refrigerant Heat Exchanger
When a water well is used exclusively for supplying water to the heat pump, a cupronickel refrigerant heat exchanger is required and the well pump should operate only when the heat pump operate. A 24 Volt contactor can be wired to the ACC1 terminal on the Control Module which can be selected to be energize prior to or at compressor start-up, which would in turn energize the water pump to operate with the heat pump.

Potential Failure Mode
Corrosion and Scaling
Iron Fouling Erosion

WELL WATER APPLICATION

Water Chemistry Parameter

Copper

pH Level Hardness (Calcium or Magnesium
Carbonate) Langelier Saturation Index (LSI)
Ryznar Stability Index (RSI) Hydrogen Sulfide Sulfates Chlorine Chlorides Carbon Dioxide Ammonia
Ammonia Chloride, Nitrate, Hydroxide, Sulfate
Total Dissolved Solids (TDS) Iron, Iron Bacteria Iron Oxide
Suspend Solids

7-9
< 350 ppm
-0.5 to 0 6.2 ­ 6.8 < 0.5 ppm < 125 ppm < 0.5 ppm < 20 ppm < 5 ppm < 2 ppm
< 0.5 ppm
< 1000 ppm < 0.2 ppm < 1 ppm < 10 ppm, < 600 Micron or 30 mesh filter size

Design Water Velocity

3 GPM/TON

Table 5 ­ Well Water Application Data

CuNi
7-9
<350 ppm
-0.5 to 0 6.2 ­ 6.8 < 0.5 ppm < 125 ppm < 0.5 ppm < 150 ppm < 5 ppm < 2 ppm
< 0.5 ppm
< 1500 ppm < 0.2 ppm < 1 ppm < 10 ppm, < 600 Micron or 30 mesh filter size
3 GPM/TON

Minimum entering water temperature is 50°F. Failure to follow this warning could result in equipment failure and property damage. The discharge water from the heat pump is not contaminated in any manner and can be disposed of in various way depending upon local codes.

Close loop and pond applications require specialized design knowledge. Do not attempt at these installations without the licensed installer the received specialized training.

24

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APPLICATION CONTINUED
ANTIFREEZE CAPACITY AND PRESSURE CORRECTION FACTORS DATA

ANTIFREEZE
COOLING CAPACITY HEATING CAPACITY
PRESSURE DROP

10% 0.995 0.991 1.070

ETHYLENE GLYCOL

20%

30%

0.992

0.987

0.982

0.977

1.130

1.180

Table 6 – Antifreeze Correction Factors Ethylene Glycol

40% 0.983 0.969 1.260

50% 0.979 0.961 1.280

ANTIFREEZE
COOLING CAPACITY HEATING CAPACITY
PRESSURE DROP

10% 0.990 0.987 1.070

PROPYLENE GLYCOL

20%

30%

0.980

0.970

0.975

0.962

1.150

1.250

Table 7 – Antifreeze Correction Factors Propylene Glycol

40% 0.960 0.942 1.370

50% 0.950 0.930 1.420

ANTIFREEZE
COOLING CAPACITY HEATING CAPACITY
PRESSURE DROP

10% 0.980 0.950 1.023

METHANOL

20% 0.972 0.970 1.067

Table 8 – Antifreeze Correction Factors Methanol

ANTIFREEZE
COOLING CAPACITY HEATING CAPACITY
PRESSURE DROP

10% 0.991 0.995 1.035

ETHANOL

20% 0.951 0.960 0.960

Table 9 – Antifreeze Correction Factors Ethanol

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CONTROLS
SEQUENCE OF OPERATION
START

YES

Y = ON

NO

COOL MODE YES

ANTI-SHORT CYCLE
NO

G = ON

NO

YES FAN MODE

FAN = ON

STAND BY

FAULT RETRY BLINK

INITIAL CONDITION: Comp = Off; Fan = Off AWAY CHIP = NOT INSERT
LEGEND: Y = Call for Cooling G = Call for Fan HPS ­ High Pressure Switch LPS ­ Low Pressure Switch CO1 ­ Air-Coil Freeze Sensor CO2 = Water-Coil Freeze Sensor CON ­ Condensate Overflow Sensor

SYSTEM CHECK
NO

HPS = CLOSED NO
YES

FAULT RETRY

LPS = CLOSED

NO

YES

COMP STATUS ON NO
YES

COUNT

< 3

YES

SYSTEM LOCK

COMP OFF

ALARM RELAY & FAULT BLINK CDO

T1 > CO1

NO

YES

T2 > CO1

NO

YES

CON = OPEN

NO

YES

COMP STATUS ON YES
YES

DIP 1.1 TARG YES
NO

COMP ON
FIGURE 13 ­ Sequence of Operations

NO
T > 5S
YES

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WSH6 HORIZONTAL SERIES ­ IOM

CONTROLS CONTINUED
WSCM CONTROL MODULE
CONTROL FEATURES Anti-short Cycle Protection Random Start High and low Pressure Cut-out Water Coil Low Temperature Cut-out Over/Under Voltage Protection Fault Retry Lockout with Soft and Hard Reset Condensate Overflow Sensor Diagnostic LED Display Test Mode Alarm Relay Accessory Relays Vacated Mode Extended Compressor Operating Monitoring
MOTOR SPEED OPERATION An ECM blower can be driven directly from the WSCM control module. The control of the motor is based off the input signals of G, Y1, and O. The blower speed is automatically controlled via the WSCM module.

MOTOR SPEED OPERATION

Unit Call

Fan Speed

G

G1

Y,G G2, then G3 after 5min of run time

Y,O,G G2, then G3 after 10min of run time Table 10 ­ Motor Speed Operation ECM

A secondary heat exchanger (plate frame between the unit and the open cooling tower) may also be used. It is imperative that all air is eliminated from the closed loop side of the heat exchanger to prevent condenser fouling.

FIELD CONTROLLABLE FUNCTIONS
TEST MODE The unit can be placed into test mode by shorting the test pins on the WSCM module. Once the pins are shorted, the WSCM module will enter a test mode period in which all time delays are sped up 15 times. While in test mode the yellow LED2 will light up yellow. Faults stored in memory can be cleared by entering into test mode and exiting the test mode, or by a hard reset. Test mode can be exited by shorting the test pins for approximately 3 seconds.

WSH6 HORIZONTAL SERIES – IOM

Test mode will be automatically exited after a 10 minute period.

During test mode, the control will monitor to see if CO1 and CO2 freeze thermistors are present and correctly. The controls will indicate fault code 19 if CO1 or CO2 are open, or if there is a jumper connecting across the free sensors terminals.
VACATED PREMISES CONTROL

Optional Vacated Premise Kit option must be installed to operate in this mode.
The vacated premises operation is designed for extended periods of un- occupancy when the occupant wants the heat pump to operate in cooling mode for a predetermined cycle time to help control indoor air conditions. See Dip 1.7 for time selection (1 or 2 hours).
Additionally, the mode will store all faults seen over 24 hours in memory. If the same fault occurs for 4 consecutive days, the unit will go into a hard lockout.
The control kit consist of a rocker switch, wiring and a programmed chip that is installed on the WSCM module by a licensed contractor.

WSH6 HORIZONTAL SERIES ­ IOM

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CONTROLS CONTINUED
FIELD CONTROLLABLE FUNCTIONS
HOME SELECTION If the switch is in the HOME position the heat pump will operate in its normal mode.
AWAY SELECTION If the switch is in the AWAY position the heat pump and thermostat are set to “COOL” mode the heat pump will operate in accordance to the thermostat setting. Additionally, the heat pump will cycle on in cooling mode for 15 minute run times either 4 or 8 times per day depending on the Dip 1.7 selection. Thermostat still has priority and will cycle the unit as needed.

If the LED display is flashing “Ay” the thermostat is not set in cooling mode.

BOILERLESS CONTROL
The system can operate in boilerless mode by switching Dip
1.5. If CO1 goes below the setting of Dip 1.6 the compressor
will be de-energized and control goes into emergency heat mode staging on “W1”. The compressor will be locked out for 60 minutes to prevent nuisance cycling.

The set point for boiler less changeover temperature can be adjusted by switching Dip 1.6.

WATER-COIL LOW TEMPERATURE CUT-OUT LIMIT Jumpers JW1-CO1 provide field selection of the temperature limit settings for CO1.

Not Clipped = 30°F

Clipped = 10°F

For all applications below 50°F entering water temperature, anti-freeze solution is required. Failure to follow this warning could result in heat exchanger, equipment or property damage.

ALARM RELAY SETTING Jumper 3 (JW3 Alarm) provides field selection of alarm relay terminal AL2 to be jumpered to 24VAC or to be dry. The alarm relay is activated during lockout mode.
Not Clipped = AL2 Connected to “R”
Clipped = AL2 dry contacts (No connection)

DEHUMIDIFICATION MODE The system can operate in Dehumidification mode by switching Dip 1.4 on the WSCM module. In this mode, the unit will run continuously in fan speed G2 when Y,O, G calls are given to the board. Dehumidification mode will not run in heating mode.
WSCM SAFETY FEATURES
ANTI-SHORT CYCLE PROTECTION The WSCM module incorporates a 5 minute anti-short cycle protection for the compressor.
RANDOM START The WSCM module features a 5-80s random start upon receiving a call to operate.
FAULT RETRY While in Fault Retry Mode the LED will display a code representing retry and the fault code. The unit will initiate the Anti-short cycle timer and try to restart after the delay. If 3 consecutive faults occur without satisfying the thermostat the unit will go into hard lockout. The last fault causing the lockout will be stored in memory and displayed on the two digit LED display.
WATER-COIL LOW TEMPERATURE CUT-OUT (CO1) The control module will recognize a CO1 fault during a compressor run cycle if:
a) Thermistor temperature is below the selected set point limit.
b) The thermistor temperature is rising at a rate less than 2°F per 30s time period. The CO1 input is bypassed for the first 120s of a compressor run cycle. On the second and third retry CO1 is bypassed for the initial 90s and 60s of run-time respectively.
AIR COIL LOW TEMPERATURE CUT-OUT (CO2) The control module will recognize a CO2 fault during a compressor run cycle if:
a) Thermistor temperature is below the selected set point limit.
b) The thermistor temperature is rising at a rate less than 2°F per 30s time period. The CO2 input is bypassed for the first 120s of a compressor run cycle.

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WSH6 HORIZONTAL SERIES ­ IOM

CONTROLS CONTINUED
WSCM SAFETY FEATURES
CONDENSATE OVERFLOW SENSOR The condensate overflow sensor must sense overflow levels for 30 continuous second to initiate a COF fault. The condensate overflow sensor will be monitored during the compressor run cycle.
LOW PRESSURE The low pressure switch must be open and remain open for 30 continuous seconds during the “on” cycle to be recognized as a low pressure fault. The low pressure switch input is bypassed for the initial 120s of compressor run-time.
HIGH PRESSURE If the high-pressure switch opens at any time, the compressor relay is de-energized immediately.
LOCKOUT MODE While in Lockout Mode the LED Display will display a code representing the lockout fault code. During this lockout the compressor relay is not energized and the alarm relay is activated.
The lockout mode can be cleared by either going into test mode or a hard reset via the power disconnect
Caution: Do not restart units in lockout mode without inspection and correction of the fault condition. Failure to do so many result in equipment damage.
EXTENDED COMPRESSOR OPERATION MONITORING If the compressor relay has been energized for four continuous hours, control module will automatically turn off the compressor relay and the compressor will enter antishort cycle delay before restarting. During this off period, all appropriate safety will be monitored and if the compressor demand is present, the control module will energize the compressor relay.
OVER/UNDER VOLTAGE SHUTDOWN Should an Over/Under Voltage Condition be detected the control module will shut down. Over/Under Voltage faults cause a soft lockout and the unit will return to normal operation once normal voltage has been restored. The nominal voltage run is 18.5VAC to 31VAC. If the WSCM module is in Over/Under Voltage fault for 15 minutes, the alarm relay will activate.

WSH6 HORIZONTAL SERIES – IOM
FIGURE 14 ­ Control Board Layout FIGURE 15 ­ Sight Glass Location

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CONTROLS CONTINUED
WSCM SAFETY FEATURES

CONTROL BOARD LAYOUT LEGEND

INPUT

CONNECTION OR

DESCRIPTION

OUTPUT

R

— 24 VAC

C

— 24 VAC (Grounded Common)

Y1

I Input Call for Compressor

W

I Input Call for Heating or Emergency Heat

O

I Input Call for Reversing Valve in Cooling

G

I Input Call for Fan Operation

AL1

O

Connect to Thermostat Fault Light ­ 24VAC or Dry Contact Alarm

AL2 A ACC1 ACC2 G1 G2 G3

O Alarm Relay 24VAC or Dry Contact

O

Output for Water Solenoid Valve ­ Paralleled with Compressor Contactor

O

ACC1 Output for Accessory Relay 1 ­ 24VAC between ACC1 and COM

O

ACC2 Output for Accessory Relay 2 ­ 24VAC between ACC2 and COM

O

Connection for Fan Relay ­ Low Speed Operation

O

Connection for Fan Relay ­ Medium Speed Operation

O

Connection for Fan Relay ­ Large Speed Operation

CC

O Connection for Compressor Contactor

CCG

O

Compressor Contactor Common Connections

HP

I High Pressure Switch Input Terminals

LOC

I Low Pressure Switch Input Terminals

CO1

I

Water Coil Low Temperature Thermistor Output

CO2

I

Air Coil Low Temperature Thermistor Output

RV

O

Reversing Valve Output Terminals ­ Direct Connect from “O”

COND_SW

I Condensate Overflow Input Terminal

W1

O Output Terminal for Electric Heat

COM

— Grounded Common

Table 11 ­ Control Board Layout Legend

CONTROLLER OPERATION CODES

DESCRIPTION OF OPERATION

LED

READOUT

Normal Mode

ON
(Green Light)

Controller Non Functional

OFF
(Green Light)

Test Mode (pins shorted momentarily)

ON
(Yellow Light)

DESCRIPTION OF OPERATION

CODE

Standby

St

Fan Only(G active)

Fo

Cool (Y1 & O active)

Co

Heat 1st Stage (Y1 active)

H1

Accessory Relay 1

A1

Accessory Relay 2

A2

Vacated Premises Control

Ay

Fault Retry

rE & CODE #

Lockout

Lo & CODE #

Over/Under Voltage Shutdown

Ou & CODE #

Temperature Sensor Error

SE & CODE #

DESCRIPTION OF OPERATION

CODE

Test Mode ­ No Fault

11

Test Mode ­ HP Fault

12

Test Mode ­ LP Fault

13

Test Mode ­ CO1 Fault

14

Test Mode ­ CO2 Fault

15

Test Mode ­ Cond. Overflow Fault

16

Test Mode ­ Over/Under Shutdown

17

Test Mode ­ Swapped CO1/CO2 Thermistors

18

Table 12 ­ Control Operating Codes

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CONTROLS CONTINUED
WSCM SAFETY FEATURES

WSCM DIP SWITCH FUNCTIONS

FUNCTION

OFF

ON

DIP SWITCH 1

1.1 Compressor Delay

No Delay 5s Delay

1.2 Motor Type

PSC Motor ECM Motor

1.3 Blower Time Delay

None

45s

1.4 Dehumidification

None

Dehum

1.5 Boilerless

Off

On

1.6 Boilerless Setpoint

40°F

50°F

1.7 Vacated Premises

1hr

2hr

DIP SWITCH 2

2.1 Accessory Relay Control

With Fan With Comp

2.2 Compressor Delay

None

60s

2.3 Accessory Relay 2 Control With Fan

With Comp

2.4 Fan Delay

None

30s

Table 13 ­ WSCM DIP Switch Functions

CONTROL BOX DETAIL

WSH6 HORIZONTAL SERIES – IOM
ASSEMBLY
Once box is removed completely, line up the control panel back in place of the unit and tighten screws on the base plate and on the front panel. Plug back any harnesses previously removed.
REMOVAL

1. Ensure that all electrical power is removed from the unit and that the local disconnect is locked out.
2. Remove the screws on the front electrical panel with a ¼” hex head driver.
3. Remove the electrical front panel and access the electrical box
4. Disconnect electrical harnesses 5) Remove the two ¼” hex header screws holding the
   electrical box in place on the bottom and side. 6) Remove electrical box from unit.

Disconnect all power supplies before servicing. Lock out/tag out to prevent accidental electrical shock.

There may be multiple power sources supplying the unit.

FIGURE 16 ­ Control Box Layout

WSH6 HORIZONTAL SERIES ­ IOM

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PERFORMANCE DATA
BLOWER DATA

MODEL NUMBER WSH6009 WSH6012 WSH6018
WSH6024
WSH6030 WSH6036 WSH6042
WSH6048
WSH6060 WSH6072

BLOWER DATA

BLOWER DATA

FAN SPEED

RATED AIRFLOW

0.1

0.2

CFM VS. STATIC PRESSURE (in. w.g.) 0.3 0.4 0.5 0.6 0.7 0.8

0.9

1.0

WHITE

–

– 370 340 310 280 250 –

–

–

VIOLET 350 – T3 – 370 340 310 280 250 –

–

–

–

GRAY

375 350 320 290 260 –

–

–

–

–

WHITE

–

– 470 440 410 380 350 320 –

–

VIOLET 450 – T3 – 460 430 400 370 340 310 –

–

–

GRAY

440 410 380 350 320 –

–

–

–

–

T4

–

–

–

– 675 650 600 530 490 –

T3

–

–

– 675 630 590 540 480 –

–

T2

600 – T3 –

– 660 620 570 540 490 –

–

–

T1

675 650 610 560 510 480 –

–

–

–

T4

–

–

–

– 920 880 840 810 780 720

T3

–

–

– 900 860 820 790 760 720 –

T2

800 – T3 –

– 890 840 800 760 730 690 –

–

T1

– 880 830 770 740 710 680 –

–

–

T4

–

–

–

– 1,170 1,050 950 850 750 –

T3

–

– 1,160 1,130 1,090 1,000 900 800 –

–

T2

1025 – T3 1,130 1,090 1,060 1,030 990 940 850 –

–

–

T1

1,030 1,000 970 940 900 860 –

–

–

–

T3

– 1,380 1,350 1,310 1,200 1,090 1,000 900 –

–

T2 1050 – T3 1,330 1,280 1,240 1,200 1,140 1,030 930 –

–

–

T1

1,240 1,190 1,160 1,130 1,090 970 –

–

–

–

T4

–

–

–

– 1,570 1,530 1,500 1,470 1,440 1,350

T3 T2

1400 – T3

1,450

1,550 1,420

1,520 1,390

1,490 1,360

1,460 1,330

1,430 1,300

1,400 1,260

1,370 1,230

1,340 1,200

1,280 1,170

T1

1,380 1,350 1,320 1,290 1,260 1,230 1,200 1,170 –

–

T4

–

–

–

– 1,760 1,700 1,540 1,430 1,300 1,200

T3

– 1,750 1,720 1,690 1,660 1,610 1,500 1,400 1,300 –

T2

1500 – T3 1,700 1,640 1,600 1,570 1,540 1,510 1,450 1,370 –

–

T1

1,560 1,520 1,490 1,460 1,420 1,380 1,330 –

–

–

T4

–

–

–

– 2,240 2,210 2,150 2,080 2,000 1,900

T3

2,240 2,210 2,180 2,150 2,100 2,070 2,030 1,970 1,920 1,830

T2

1750 – T2 2,100 2,060 2,030 2,000 1,960 1,920 1,880 1,870 1,830 1,760

T1

1,940 1,910 1,880 1,840 1,790 1,750 1,710 1,680 –

–

T3

2,420 2,380 2,360 2,320 2,260 2,240 2,210 2,130 2,040 1,960

T2 2100 – T3 2,290 2,250 2,220 2,180 2,140 2,110 2,070 2,010 1,950 –

T1

2,160 2,120 2,090 2,040 2,010 1,970 1,940 –

–

–

Airflow data shown is with a wet coil at 80°F DB, 67°F WB EAT and with standard 1″ MERV 8 filter.

Table 14 ­ WSH6 Blower Data

FACTORY BLOWER

SETTINGS

COOLING
1-10 10+ MIN MIN
X

HEATING X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

32

WSH6 HORIZONTAL SERIES ­ IOM

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 1.1 1.7 2.3 1.1 1.7 2.3 1.1 1.7 2.3 1.1 1.7 2.3 1.1 1.7 2.3 1.1 1.7 2.3

Suction Pressure
psig

WSH6009 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

128-138 137-147 126-136 132-142 130-140 130-140 135-145 134-144 134-144 142-152 140-150 139-149

Operation Not Recommended

61-71

62-72

63-73

214-224

22-28

21-25

83-93

193-203

22-28

13-17

90-100

183-193

22-28

10-14

93-103

284-294

21-27

20-24

118-128

260-270

21-27

13-17

120-130

249-259

21-27

9-13

144-154

367-377

19-25

19-23

159-169

342-352

20-26

12-16

175-185

330-340

20-26

9-13

184-194

468-478

18-24

18-22

442-452

18-24

12-16

430-440

19-25

8-12

Table 15 ­ WSH6009 Pressure & Temperature Data

258-268 262-272 264-274 290-300 296-206 299-309 324-334 335-345 340-350 373-383 383-393 392-402

17-23 18-24 18-24 22-28 24-30 24-30 29-35 30-36 32-38 37-43 39-45 41-47

Operation Not Recommended

7-11 5-9 3-7 9-13 6-10 4-8 13-17 9-13 6-10 17-21 12-16 9-13

WSH6 HORIZONTAL SERIES ­ IOM

33

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 1.5 2.3 3 1.5 2.3 3 1.5 2.3 3 1.5 2.3 3 1.5 2.3 3 1.5 2.3 3

Suction Pressure
psig

WSH6012 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

126-136 125-135 124-134 130-140 128-138 128-138 134-144 133-143 132-142 139-149 138-148 137-147

Operation Not Recommended

59-69

64-57

68-78

215-225

20-26

21-25

85-95

194-204

21-27

13-17

92-102

183-193

21-27

9-13

95-105

284-294

19-25

20-24

121-131

260-270

20-26

13-17

131-141

248-258

20-26

9-13

137-147

366-376

18-24

20-24

163-173

341-351

19-25

13-17

179-189

328-338

19-25

9-13

188-198

466-476

17-23

19-23

439-449

17-23

12-16

426-436

17-23

9-13

Table 16 ­ WSH6012 Pressure & Temperature Data

263-273 268-278 270-280 296-306 303-313 306-316 334-344 345-355 358-368 383-393 401-411 412-422

16-22 17-23 18-24 22-28 23-29 24-30 29-35 31-37 32-38 37-43 40-46 42-48

Operation Not Recommended

7-11 4-8 3-7 9-13 6-10 4-8 13-17 8-12 6-10 16-20 11-15 8-12

34

WSH6 HORIZONTAL SERIES ­ IOM

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 2.3 3.4 4.5 2.3 3.4 4.5 2.3 3.4 4.5 2.3 3.4 4.5 2.3 3.4 4.5 2.3 3.4 4.5

Suction Pressure
psig

WSH6018 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

124-134 123-133 122-132 128-138 127-137 126-136 132-142 131-141 131-141 137-147 136-146 136-146

Operation Not Recommended

62-72

65-75

70-80

212-222

19-25

17-21

95-105

194-204

20-26

11-15

103-113

186-196

20-26

8-12

107-117

282-292

18-24

17-21

132-142

262-272

19-25

10-14

143-153

253-263

19-25

7-11

150-160

367-377

18-24

16-20

178-188

346-356

18-24

10-14

195-205

338-348

18-24

7-11

205-215

471-481

16-22

16-20

449-459

17-23

10-14

442-452

17-23

7-11

Table 17 ­ WSH6018 Pressure & Temperature Data

276-286 282-292 283-293 334-344 344-354 360-360 383-393 399-409 408-418 444-454 466-476 479-489

16-22 17-23 18-24 24-30 26-32 27-33 31-37 33-39 35-41 39-45 42-48 43-49

Operation Not Recommended

7-11 5-9 3-7 9-13 6-10 4-8 12-16 8-12 6-10 16-20 10-14 8-12

WSH6 HORIZONTAL SERIES ­ IOM

35

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 3 4.5 6 3 4.5 6 3 4.5 6 3 4.5 6 3 4.5 6 3 4.5 6

Suction Pressure
psig

WSH6024 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

126-136 125-135 113-123 130-140 129-139 129-139 135-145 134-144 133-143 140-150 139-149 139-149

Operation Not Recommended

56-66

61-71

66-76

202-212

20-26

16-20

93-103

187-197

20-26

10-14

98-108

180-190

20-26

8-12

102-112

271-281

19-25

16-20

130-140

255-265

19-25

10-14

140-150

247-257

19-25

7-11

145-155

357-367

18-24

15-19

176-186

340-350

18-24

10-14

191-201

331-341

18-24

7-11

199-209

461-471

17-23

15-19

443-453

17-23

9-13

434-444

17-23

7-11

Table 18 ­ WSH6024 Pressure & Temperature Data

253-263 256-266 259-269 294-204 300-310 303-313 330-340 339-349 344-354 385-395 388-398 407-417

16-22 17-23 18-24 19-25 20-26 21-27 26-32 27-33 28-34 33-39 35-41 37-43

Operation Not Recommended

6-10 4-8 2-6 7-11 5-9 3-7 11-15 7-11 5-9 14-18 9-13 7-11

36

WSH6 HORIZONTAL SERIES ­ IOM

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 3.8 5.6 7.5 3.8 5.6 7.5 3.8 5.6 7.5 3.8 5.6 7.5 3.8 5.6 7.5 3.8 5.6 7.5

Suction Pressure
psig

WSH6030 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

118-128 116-126 116-126 123-133 121-131 120-130 128-138 126-136 126-136 134-144 133-143 132-142

Operation Not Recommended

53-73

67-77

71-81

218-228

24-30

20-24

93-103

198-208

25-31

13-17

100-110

188-198

25-31

9-13

104-114

289-299

23-29

20-24

130-140

265-275

23-29

13-17

140-150

254-264

23-29

9-13

147-157

375-385

22-28

19-23

173-183

349-359

22-28

12-16

189-199

337-347

22-28

9-13

199-209

478-488

20-26

18-22

452-462

20-26

12-16

439-449

21-27

8-12

Table 19 ­ WSH6030 Pressure & Temperature Data

264-274 267-277 271-281 309-319 317-327 321-331 349-359 361-371 368-378 398-408 416-426 427-437

19-25 20-26 21-27 26-32 27-33 28-34 33-39 36-42 37-43 42-48 45-51 46-52

Operation Not Recommended

7-11 4-8 3-7 9-13 6-10 4-8 12-16 8-12 6-10 16-20 11-15 8-12

WSH6 HORIZONTAL SERIES ­ IOM

37

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 4.5 6.8 9 4.5 6.8 9 4.5 6.8 9 4.5 6.8 9 4.5 6.8 9 4.5 6.8 9

Suction Pressure
psig

WSH6036 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

122-132 120-130 120-130 126-136 125-135 124-134 131-141 129-139 129-139 136-146 135-145 135-145

Operation Not Recommended

62-72

66-76

70-80

221-231

23-29

19-23

93-103

203-213

23-29

12-16

100-110

194-204

23-29

9-13

104-114

294-304

22-28

19-23

130-140

273-283

22-28

12-16

141-151

264-274

22-28

9-13

148-158

382-392

21-27

18-22

175-185

360-370

21-27

12-16

192-202

350-360

21-27

8-12

202-212

489-499

19-25

18-22

466-476

20-26

11-15

457-467

20-26

8-12

Table 20 ­ WSH6036 Pressure & Temperature Data

265-275 269-279 275-285 311-321 319-329 323-333 353-363 365-375 373-383 403-413 421-431 432-442

19-25 20-26 21-27 25-31 26-32 27-33 32-38 34-40 36-42 41-47 43-49 45-61

Operation Not Recommended

7-11 4-8 2-6 9-13 6-10 4-8 13-17 8-12 6-10 16-20 11-15 8-12

38

WSH6 HORIZONTAL SERIES ­ IOM

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 5.3 7.9 10.5 5.3 7.9 10.5 5.3 7.9 10.5 5.3 7.9 10.5 5.3 7.9 10.5 5.3 7.9 10.5

Suction Pressure
psig

WSH6042 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

128-138 127-137 126-136 133-143 131-141 131-141 137-147 136-146 135-145 143-153 141-151 141-151

Operation Not Recommended

58-68

62-72

64-74

226-236

24-30

20-24

89-99

205-215

25-31

13-17

95-105

195-205

25-31

9-13

99-109

298-308

23-29

19-23

126-136

274-284

24-30

12-16

134-144

263-273

24-30

9-13

141-151

385-395

22-28

18-22

170-180

359-369

22-28

12-16

185-195

348-358

23-29

8-12

194-204

489-499

21-27

18-22

463-473

21-27

11-15

451-461

21-27

8-12

Table 21 ­ WSH6042 Pressure & Temperature Data

262-272 266-276 271-281 293-303 299-309 302-312 328-338 336-346 343-353 372-382 387-397 395-405

19-25 20-26 21-27 24-30 25-31 26-32 31-37 33-39 34-40 39-45 42-48 43-50

Operation Not Recommended

5-9 3-7 2-6 8-12 5-9 3-7 11-15 8-12 5-9 15-19 10-14 7-11

WSH6 HORIZONTAL SERIES ­ IOM

39

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 6 9 12 6 9 12 6 9 12 6 9 12 6 9 12 6 9 12

Suction Pressure
psig

WSH6048 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

122-132 120-130 120-130 127-137 125-135 124-134 132-142 130-140 129-139 138-148 136-146 135-145

Operation Not Recommended

65-75

69-79

73-83

222-232

24-30

20-24

104-114

201-211

25-31

13-17

111-121

191-201

25-31

9-13

115-125

293-303

23-29

20-24

144-154

269-279

23-29

13-17

155-165

257-267

24-30

9-13

161-171

380-390

22-28

19-23

193-203

354-364

22-28

12-16

209-219

341-351

22-28

9-13

217-227

485-495

21-27

18-22

457-467

21-27

12-16

444-454

21-27

8-12

Table 22 ­ WSH6048 Pressure & Temperature Data

271-281 275-285 280-290 310-320 316-326 320-330 348-358 359-369 365-375 395-405 411-421 420-430

19-25 20-26 21-27 25-31 26-32 27-33 32-38 34-40 35-41 40-46 42-48 43-50

Operation Not Recommended

7-11 4-8 3-7 9-13 5-9 4-8 12-16 8-12 5-9 15-19 10-14 7-11

40

WSH6 HORIZONTAL SERIES ­ IOM

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 7.5 11.3 15 7.5 11.3 15 7.5 11.3 15 7.5 11.3 15 7.5 11.3 15 7.5 11.3 15

Suction Pressure
psig

WSH6060 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

125-135 123-133 123-133 129-139 128-138 127-137 134-144 133-143 132-142 140-150 139-149 138-148

Operation Not Recommended

58-68

62-72

64-74

220-230

25-31

19-23

91-101

201-211

25-31

12-16

98-108

191-201

25-31

9-13

101-111

290-300

24-30

18-22

128-138

268-278

24-30

12-16

138-148

257-267

24-30

8-12

144-154

377-387

23-29

18-22

172-182

352-362

23-29

11-15

187-197

340-350

23-29

8-12

196-206

480-490

21-27

17-21

455-465

21-27

11-15

443-453

22-28

8-12

Table 23 ­ WSH6060 Pressure & Temperature Data

265-275 269-279 274-284 309-319 316-326 320-330 349-359 361-371 367-377 398-408 415-425 424-434

25-31 26-32 27-33 28-34 29-35 30-36 36-42 38-44 39-45 45-51 48-54 50-56

Operation Not Recommended

7-11 4-8 3-7 9-13 5-9 4-8 12-16 8-12 5-9 15-19 10-14 7-11

WSH6 HORIZONTAL SERIES ­ IOM

41

WSH6 HORIZONTAL SERIES – IOM

PERFORMANCE DATA CONTINUED
PRESSURE & TEMPERATURE DATA

Entering Water Temp
°F 20
30
50
70
90
110

Water Flow Rate
GPM 9
13.5 18 9 13.5 18 9 13.5 18 9 13.5 18 9 13.5 18 9 13.5 18

Suction Pressure
psig

WSH6072 PRESSURE & TEMPERATURE DATA

COOLING

Discharge Air Temp

Water

Suction

Pressure

Drop

Temp Rise Pressure

psig

°F

°F

psig

HEATING

Discharge Air Temp

Pressure

Rise

psig

°F

Water Temp Drop
°F

Operation Not Recommended

122-132 121-131 120-130 126-136 125-135 125-135 132-142 130-140 130-140 137-147 136-146 135-145

Operation Not Recommended

56-66

59-69

64-74

219-229

25-31

18-22

85-95

202-212

26-32

12-16

91-101

193-203

26-32

8-12

95-105

288-298

24-30

18-22

119-129

268-278

24-30

11-15

129-139

259-269

25-31

8-12

135-145

373-383

23-29

17-21

160-170

351-361

23-29

11-15

175-185

341-351

23-29

8-12

184-194

474-484

21-27

17-21

451-461

22-28

11-15

441-451

22-28

8-12

Table 24 ­ WSH6072 Pressure & Temperature Data

275-285 281-291 283-293 309-319 316-326 320-330 351-361 363-373 370-380 403-413 422-432 433-443

20-26 22-28 23-29 28-34 29-35 30-36 36-42 38-44 40-46 46-52 49-55 51-57

Operation Not Recommended

5-9 3-7 2-6 8-12 5-9 3-7 11-15 7-11 5-9 14-18 10-14 7-11

42

WSH6 HORIZONTAL SERIES ­ IOM

PERFORMANCE DATA CONTINUED
WATER PRESSURE DROP DATA

WSH6 HORIZONTAL SERIES – IOM

WATERSIDE PRESSURE DROP

Flow Rate (GPM)

1.1

1.7

2.3

WSH6009

Pressure Drop (PSI)

0.2

0.7

1.2

Flow Rate (GPM)

1.5

2.5

3.0

WSH6012

Pressure Drop (PSI)

0.5

1.5

2.0

Flow Rate (GPM)

2.3

3.4

4.5

WSH6018

Pressure Drop (PSI)

0.5

1.4

2.4

Flow Rate (GPM)

3.0

4.5

6.0

WSH6024

Pressure Drop (PSI)

0.3

1.1

2.0

Flow Rate (GPM)

3.8

5.6

7.5

WSH6030

Pressure Drop (PSI)

1.0

2.1

3.5

Flow Rate (GPM)

4.5

6.8

9.0

WSH6036

Pressure Drop (PSI)

0.3

1.3

2.4

Flow Rate (GPM)

5.3

WSH6042

Pressure Drop (PSI)

0.3

7.9

10.5

1.6

2.8

Flow Rate (GPM)

6.0

WSH6048

Pressure Drop (PSI)

1.1

9.0

12.0

2.2

3.5

Flow Rate (GPM)

7.5

WSH6060

Pressure Drop (PSI)

1.4

11.3

15.0

3.2

5.3

WSH6072

Flow Rate (GPM)

9.0

13.5

Pressure Drop (PSI)

1.6

3.0

Table 25 ­ Pressure Drop Data

Note: All values based upon pure water at 70°F

18.0 5.1

WSH6 HORIZONTAL SERIES ­ IOM

43

WSH6 HORIZONTAL SERIES ­ IOM

WSH6009-12 WIRING DIAGRAM (208-230V/1Ph/60Hz)
FIGURE 17 ­ WSH6009-12 (208-230V/1Ph/60Hz)* Wiring Diagram

WSH6 HORIZONTAL SERIES – IOM
WIRING DIAGRAMS

4 4

WIRING DIAGRAMS

WSH6 HORIZONTAL SERIES ­ IOM

WSH6009-12 WIRING DIAGRAM (265V/1Ph/60Hz)
FIGURE 18­ WSH6009-12 (265V/1Ph/60Hz) Wiring Diagram

WSH6 HORIZONTAL SERIES – IOM

45

WSH6 HORIZONTAL SERIES ­ IOM

WSH6018-72 WIRING DIAGRAM (208-230V/1Ph/60Hz)
FIGURE 19 ­ WSH6018-72 (208-230V/1Ph/60Hz) Wiring Diagram

WSH6 HORIZONTAL SERIES – IOM
WIRING DIAGRAMS

4 6

WIRING DIAGRAMS

WSH6 HORIZONTAL SERIES ­ IOM

WSH6018-72 WIRING DIAGRAM (265V/1Ph/60Hz)
FIGURE 20 ­ WSH6018-72 (265V/1Ph/60Hz) Wiring Diagram

WSH6 HORIZONTAL SERIES – IOM

47

WSH6 HORIZONTAL SERIES ­ IOM

WSH6024-72 WIRING DIAGRAM (208-230-460V/3Ph/60Hz)
FIGURE 21 ­ WSH6024-72 (208-230-460V/3Ph/60Hz) Wiring Diagram

WSH6 HORIZONTAL SERIES – IOM
WIRING DIAGRAMS

4 8

CIRCUIT SCHEMATIC

WSH6 HORIZONTAL SERIES – IOM

FIGURE 22 – Circuit Schematic

STARTUP INSTRUCTIONS
PRE-STARTUP CHECKS:

Electrically ground the unit. Connect ground wire to ground lug. Failure to do so can result in injury or death.

Wire any field installed device such as a fan switch or thermostat furnished by the factory in strict accordance with the wiring diagram supplied with the unit. Failure to do so could result in damage to components and will void all warranties.
Before start-up, thoroughly check all the components. Optimal operation of equipment requires cleanliness. Often after installation of the equipment, additional construction

activities occur. Protect the equipment from debris during these construction phases.
PRIOR TO THE STARTUP OF THE UNIT:
1. Ensure supply voltage matches nameplate data. 2. Ensure the unit is properly grounded 3. With the power off, check blower wheel set screws
for proper tightness and that the blower wheel rotates freely. 4. Ensure unit will be accessible for servicing. 5. Ensure condensate line is properly sized, run, trapped, pitched and tested. 6. Ensure all cabinet openings and wiring connections have been sealed. 7. Ensure clean filters are in place. 8. Ensure all access panels are in place and secured.

WSH6 HORIZONTAL SERIES ­ IOM

49

WSH6 HORIZONTAL SERIES – IOM

STARTUP INSTRUCTIONS CONTINUED

PRIOR TO THE STARTUP OF THE UNIT:
9. Check that the water coil and piping has been leak checked and insulated as required.
10. Ensure that all air has been vented from the water coil.
11. Make sure that all electrical connections are tight and secure.
12. Check the electrical overcurrent protection and wiring for the correct size.
13. Verify that the low voltage wiring between the thermostat and the unit matches the wiring diagram.
14. Verify that the water piping is complete and correct. 15. Check condensate overflow sensor for proper
operation and adjust position if required. Ensure that power is connected to the unit and the local disconnect is switched to ON position. 16. Check to make sure that the refrigerant piping is free from any kinks and there is no interference between unit piping and sheet metal, electrical wires or other piping. 17. Before the unit is connected to the supply water, the water circulating system must be cleaned and flushed to remove any dirt or debris for the system. Refer to Maintenance & Service ­ Cleaning/Flushing 18. Prior to starting the unit, it is necessary to fully loosen the compressor bolts, and re-tighten them finger tight. 19. Verify that all water control valves are open and allow water flow prior to engaging the compressor. Freezing of the coax or water lines can permanently damage the heat pump.

rotation could be done by switching any two of compressor wires. 6. Turn the thermostat system to “OFF” position. The unit should stop running and the reversing valve deenergizes. 7. Leave the unit off for approximately 5 minutes to allow the system pressures to equalize. Anti-short cycle feature built in the system will keep the compressor off for 5 minutes. 8. Set the thermostat to the highest setting. Turn the system switch to “HEAT” position. 9. Verify that the unit is operating to the heating mode. 10. Set the thermostat to maintain the desired space temperature. 11. Check for vibrations, leaks, etc. 12. Verify water flow rate is correct according to specification. Adjust if necessary. If specification is not available, the nominal flow rate for this unit is 3 GPM per Ton. 13. Instruct the owner on the unit and thermostat operation.
STARTUP & PERFORMANCE
CHECKLIST INSTRUCTIONS
The warranty may be void unless the FIGURE 23 ­ Startup & Performance Checklist. is completed and returned to the warrantor. If the WSH6 unit is not installed properly, the warranty will be void, as the manufacturer cannot be held accountable for problems that stem from improper installation.

UNIT STARTUP:
1. Turn the disconnect switch to ON position. 2. Check for 24 volts from control transformer.
Controller module LED should light up. If not, the power supply lines are out of phase. Turn the main power disconnect to the unit off and change the phase by switching any two incoming wires. 3. Set the thermostat to the lowest position. Turn the system switch to “COOL” and the fan switch to “AUTO” position. The reversing valve should energize. 4. After 5 minutes (anti-short cycle protect delay), the fan starts at low speed and the compressor is running. 5. Make sure that compressor rotation is correct. If not, turn the power off and make the correction. This is a 3-phase unit. Switching compressor

50

WSH6 HORIZONTAL SERIES ­ IOM

MAINTENANCE & SERVICE
PREVENTIVE MAINTENANCE
To achieve maximum performance and service life of equipment, a formal schedule of regular maintenance should be established and adhered to.

All appropriate personal protection equipment should be worn when servicing or maintaining this unit. Personal injury can result from sharp metal edges, moving parts, and hot or cold surfaces.
FAN
The fan should be inspected and cleaned annually in conjunction with maintenance of the motor and bearings. It is important to keep the fan section and motor clean and free from obstruction to prevent imbalance, vibration, and improper operation.

Check motor connections to ensure they are secure and in accordance with the unit wiring diagram. ECM motors have line voltage power applied at all times. MAKE SURE POWER IS DISCONNECTED BEFORE SERVICING.
FILTER
The air filter should be cleaned or replaced every 30 days or more frequently if severe operating conditions exist. Always replace the filter with the same type and size as originally furnished.
COIL
Clean all heat transfer surfaces and remove all dirt, dust, and contaminates that potentially impairs air flow using industry accepted practices. Care should be taken not to bend coil fin material.
CONDENSATE DRAIN PAN AND PIPE
Check and clean all dirt and debris from pan. Ensure drain line is free flowing and unobstructed.
MAINTENANCE UPDATES
Check regularly for a current copy of the maintenance program log, which can be found at under “product information”.
WSH6 HORIZONTAL SERIES ­ IOM

WSH6 HORIZONTAL SERIES – IOM
CLEANING/FLUSHING
Before the unit is connected to the supply water, the water circulating system must be cleaned and flushed to remove any dirt or debris for the system.
1. Connect the supply and return water lines together in order to bypass the unit. This will prevent dirt or debris from getting into the system during the flushing process.
2. Start the main water circulating pump and allow for water to circulate in the system. Open drains at the lowest point in the system and drain out the water while simultaneously filling the loop with city water. Continue to exchange the loop water with the city water for a minimum of two hours, or until drain water is clear. During this time, check to make sure there are no leaks within the system.
3. Open all drains and vents to drain water system and refill with clean water. Test the system water quality and treat as necessary in order to bring water quality to within requirements for the system. Water PH level should be 7.5 to 8.5. Antifreeze may be added if required.
4. Connect the water-source heat pump supply and return lines, following proper installation procedures outlined in the piping installation section. After the installation has been checked for leaks, bring the water-loop to the desired set point and vent any air within the loop.
UNIT PERFORMANCE
Record performance measurements of volts, amps and water temperature differences (both heating and cooling). A comparison of logged data with start-up and other annual data is useful as an indicator of general equipment condition.
UNIT LOCKOUT
Air or water problem could cause periodic lockouts. The lockout (shutdown) of the units is a normal protective result. Check for dirt in the water system, water flow rates, water temperatures, airflow rates (may be caused by dirty filter) and air temperatures.
LABORATORY TESTING
When the unit has less than 100 operational hours and the coils have not had sufficient time to be “seasoned”, it is necessary to clean the dry coil with a mild surfactant such as Calgon to remove the oils left by manufacturing processes.
51

WSH6 HORIZONTAL SERIES – IOM
TROUBLESHOOTING

PROBLEM HTG CLG

POSSIBLE CAUSE

CHECKS & CORRECTIONS

Power supply off – apply power; close disconnect.

Blown fuse – replace fuse or reset circuit breaker. Check for correct

fuses.

X X Green Status Light Off

Voltage supply low – If voltage is below minimum voltage specified on unit nameplate.

Check for 24VAC between R and C on WSCM board

Check line voltage at circuit breaker and disconnect

Check for line voltage between L1 and L2 on the contactor

ENTIRE UNIT DOES NOT RUN

Check primary / secondary voltage at transformer Set the fan to “ON”, the fan should run. Set thermostat to “COOL”
and lowest temperature setting, the unit should run in the cooling mode (reversing valve energized). Set unit to “HEAT” and the

highest temperature setting, the unit should run in the heating

mode. If neither the blower nor compressor run in all three cases,

X X Thermostat

the thermostat could be mis-wired or faulty. To ensure mis-wired

or faulty thermostat verify 24 volts is available on the condenser
section low voltage terminal strip between “R” and “C”, “Y” and “C”, and “O” and “C”. If blower does not operate, verify 24 volts between terminals “G” and “C” in the air handler. Replace the

thermostat if defective.

X

Reduced or no water flow in cooling

Check pump operation or valve operation setting. Check water flow, adjust to proper flow rate.

X

Water temperature out of range in cooling

Reduce water temperature to within design parameters.

Check for dirty air filter and clean or replace.

X

HP FAULT ­ CODE

12 – HIGH

PRESSURE

X

Reduced or no airflow in heating
Air temperature out of range in heating

Check fan motor operation and airflow restrictions. Dirty evaporator coil ­ clean if required. Too high of external static pressure. Check static vs blower tables.
Bring return air temperature within design parameters.

X

X

Overcharged with refrigerant

The unit is overcharged with refrigerant. Reclaim refrigerant, evacuate and recharge with factory recommended charge.

X X Bad HP switch

Check switch continuity and operation. Replace if needed.

X

X

Non-condensables in system

Vacuum system and re-weigh in charge.

X X Restricted TXV

Check superheat and subcooling. Replace if necessary.

X X Insufficient charge

Check for refrigerant leaks, repair and recharge system.

X

Compressor pump down at Check charge and start-up water flow. start-up

X LP FAULT ­ CODE

Reduced water flow in heating

Check pump operation or water valve operation/setting. Plugged strainer or filter? Clean or replace. Check water flow. Adjust to proper flow rate.

13 – LOW PRESSURE

X

Water temperature out of Bring water temperature within design parameters. range

Check for dirty air filter and clean or replace.

X Reduced airflow in cooling Check fan motor operation and air flow restrictions.

Too high of external static? Check static vs blower table.

X

Air temperature out of range

Too much cold vent air? Bring entering air temperature within design parameters.

Table 26 ­ Troubleshooting Table

52

WSH6 HORIZONTAL SERIES ­ IOM

TROUBLESHOOTING CONTINUED

WSH6 HORIZONTAL SERIES – IOM

PROBLEM HTG CLG

POSSIBLE CAUSE

CHECKS & CORRECTIONS

X

Reduced or no water flow in heating

Check pump operation or water valve operation/setting. Plugged strainer or filter. Clean or replace. Check water flow adjust to proper flow rate.

CO1 FAULT ­

X

CODE 14 – LOW

WATER TEMPERATURE

X

Inadequate anti-freeze level Improper low water temperature setting (30F vs 10F)

Check anti-freeze density with hydrometer. Clip CO1 jumper (JW1) for antifreeze (10F) use.

X

Water temperature out of Bring water temperature within design parameters. range

X X Bad thermistor

Check temperature and impedance correlation per table.

CO1 FAULT ­ CODE 15 ­ AIR
COIL LOW

X

Reduced or no airflow in cooling

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. Too high of external static pressure. Check static vs blower tables.

X

Improper low temperature Normal airside applications will require 30F only. setting (30F vs 10F)

TEMPERATURE

X

Air temperature out of range

Return air too cold? Bring entering air temperature within design parameters.

X X Bad thermistor

Check temperature and impedance correlation per table.

X

CONDENSATE FAULT ­ CODE 16

X

­ CONDENSATE

OVERFLOW

X Blocked drain X Improper Trap
X Poor drainage
X Moisture on sensor

Check for blockage and clean drain. Check trap dimensions and location. Check for piping slope away from unit. Check drain pan for dirty pan or clogged drain nipple. Check for moisture on sensor shorting the sensor to ground.

Check power supply and 24VAC voltage before and during

operation.

OVER/UNDER

X

FAULT ­ CODE17 ­

X Under voltage

Check power supply wire size. Check compressor starting draw. Need hard start kit? Check 24VAC and unit transformer tap for correct power supply

OVER/UNDER

voltage.

VOLTAGE

Check power supply and 24VAC voltage before and during

X X Over voltage

operation. Check 24VAC and unit transformer tap for correct power supply

voltage.

SWAPPED CO1 &

CO2 ­ CODE 18 THERMISTOR

X

X CO1 and CO2 swapped

Reverse positions of thermistors.

FAULT

TEMPERATURE

SENSOR ERROR X FAULT ­ CODE 19

X CO1 and CO2 mis-wired Check for proper wiring of CO1 and CO2 sensors or jumper. Table 27 ­ Troubleshooting Table Continued

WSH6 HORIZONTAL SERIES ­ IOM

53

WSH6 HORIZONTAL SERIES – IOM
TROUBLESHOOTING CONTINUED

PROBLEM
BLOWER OPERATES BUT COMPRESSOR DOES NOT RUN
UNIT SHORT CYCLES
INSUFFICIENT COOLING OR
HEATING
ONLY COMPRESSOR
RUNS

HTG CLG

POSSIBLE CAUSE

CHECKS & CORRECTIONS

X

X Capacitor

Check for correct size capacitor, replace If defective.

X

X Thermostat

Check setting, calibration and wiring.

X

X Wiring

Check for loose or broken wires at compressor, capacitor or contactor.

X

X Safety Controls

Check control board fault LED for fault code.

X

X

Compressor overload open

If the compressor is cool and the overload will not reset, replace the compressor.

X

X

Compressor motor grounded

Internal wiring grounded to the compressor shell. Replace compressor. If compressor burnout, install new filter dryer.

X

X

Compressor windings open

After compressor has cooled, check continually of compressor windings. If the windings are open, replace the compressor.

X

X Refrigerant charge

The unit is low on refrigerant. Check for refrigerant leak, repair, evacuate and recharge with factor recommended charge.

X

X Low pressure switch

Check for defective or improperly calibrated low pressure switch.

X

X Unit oversized

Recalculate heating and cooling loads.

X

X Thermostat

Thermostat installed near a supply air register, relocate thermostat. Check heat anticipator.

X

X Wiring and controls

Loose connections in the wiring or a defective compressor contactor.

X

X Dirty air filter

Check for dirty air filter and clean or replace

X

X Unit in “Test Mode”

Cancel test mode by shorting test pins for three seconds or wait for 20 minutes for auto exit

X

X Unit undersized

Recalculate heating and cooling loads. If not excessive, possibly adding insulation will rectify the situation.

X

X

Loss of conditioned air by leaks

Check for leaks in ductwork or introduction of ambient air through doors or windows.

X

X Airflow

Lack of adequate airflow or improper distribution of air. Replace dirty air filter.

X

X Refrigerant charge

Low on refrigerant charge causing inefficient operation.

Check for defective compressor. If discharge is too low and

X

X Compressor

suction pressure is too high, compressor is not pumping properly.

Replace compressor.

Defective reversing valve creating bypass of refrigerant from

X

X Reversing valve

discharge to suction side of compressor. Discharge is too low and

suction is too high. Replace reversing valve.

X

X Operating pressures

Compare unit operating pressures to the pressure / temperature chart for the unit.

X

X

Refrigerant metering device

Check for possible restriction or defect. Replace is necessary.

X

X

Moisture, noncondensables

The refrigerant system may be contaminated with moisture or non-condensables. Reclaim refrigerant, evacuate and recharge with factory recommended charge. Replace filter dryer.

X

X Thermostat wiring

X

X Fan motor relay

Check thermostat wiring at WSCM board and thermostat. Jumper “G” and “R” for fan operation Jumper “G” and “R” for fan operation. Check for 24VAC at fan
relay coil. Check for line voltage across fan relay contacts.

X

X Fan motor

Check for line voltage at motor. Check capacitor.

Table 28­ Troubleshooting Table Continued

54

WSH6 HORIZONTAL SERIES ­ IOM

TROUBLESHOOTING CONTINUED

WSH6 HORIZONTAL SERIES – IOM

PROBLEM HTG CLG

POSSIBLE CAUSE

CHECKS & CORRECTIONS

X

X Thermostat setup

UNIT DOESN’T

OPERATE IN

X

X Thermostat wiring

COOLING

X

X Reversing valve

Check that thermostat is wired to energize the reversing valve from “O” terminal. (Cooling mode).
Check thermostat wiring at WSCM board and thermostat. Jumper “o” and “R” to energize reversing valve (click).
Set thermostat to cooling and check for 24VAC at reversing valve
coil.

X

X Dirty filter

Replace or clean.

Check for dirty air filter and clean or replace.

X

Reduced or no airflow in heating

Check fan motor operation and airflow restrictions. Too high of external static? Check static vs blower table.

X

Reduced or no airflow in cooling

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. Too high of external static? Check static vs blower table.

Check supply and return air temperatures at the unit and at

INSUFFICIENT

X

X Leaky duct work

CAPACITY/ NOT

distant duct registers if significantly different, duct leaks are present.

COOLING OR

X

X Low refrigerant charge

Check superheat and subcooling per chart.

HEATING

X

X Restricted metering device Check superheat and subcooling per chart. Replace.

X Defective reversing valve Perform RV touch test.

X

X

Thermostat improperly located

Check location and for air drafts behind stat.

X

X Unit undersized

Recheck loads and sizing. Check sensible cooling load and heat pump capacity.

X

X

Scaling in water heat exchanger

Perform scaling check and clean if necessary.

X

X

Inlet water too hot or too cold

Check load, loop sizing, loop backfill, ground moisture.

LOW DISCHARGE X

Too high of airflow

Check fan motor speed selection and airflow table.

AIR TEMPERATURE IN X

Poor performance

See “Insufficient Capacity”.

HEATING

X Too high of airflow

Check fan motor speed selection and airflow table.

HIGH HUMIDITY

X Unit oversized

Recheck loads and sizing. Check sensible cooling load and heat pump capacity.

Table 29 ­ Troubleshooting Table Continued

WSH6 HORIZONTAL SERIES ­ IOM

55

WSH6 HORIZONTAL SERIES – IOM

SUPPORT/REFERENCE MATERIAL

REFERENCE CALCULATIONS

HEATING

LDB = EDB +

QH GPM x 500

LWT = EAT +

QA cfm x 1.08

COOLING

LDB = EDB ­

SC

cfm x 1.08

QR LWT = EWT +
GPM x 500 LC = QC ­ SC

SC SHR =
QC

COMMON CONVERSIONS

Air Flow Water Flow Static Pressure Water Pressure Drop Temperature Power Weight Weight EER COP

I/s = CFM x .47 I/s = GPM x .06 Pa = IWC x 249 FOH = PSI x 2.3 °C = (°F ­ 32) x 5/9 kW = Btuh / 3412 oz = lb x 16 kg = lb / 2.2 COP x 3.413 EER / 3.413

ABBREVIATIONS & DEFINITIONS
LDB = Leaving air temperature dry bulb °F EDB = Entering air temperature dry bulb °F GPM = Water flow rate gallons per minute CFM = Airflow rate cubic feet per minute QH = Heating capacity Btuh QA = Heat of absorption Btuh SC = Sensible cooling capacity Btuh QR = Heat of rejection Btuh LC = Latent cooling capacity Btuh SHR = Sensible heat ratio

56

WSH6 HORIZONTAL SERIES ­ IOM

STARTUP & PERFORMANCE CHECKLIST

WSH6 HORIZONTAL SERIES – IOM

FIGURE 23 ­ Startup & Performance Checklist

WSH6 HORIZONTAL SERIES ­ IOM

57

WSH6 HORIZONTAL SERIES – IOM
NOTES

58

WSH6 HORIZONTAL SERIES ­ IOM

NOTES

WSH6 HORIZONTAL SERIES – IOM

WSH6 HORIZONTAL SERIES ­ IOM

59

P.O. Box 270969 Dallas, TX 75227 www.firstco.com or www.ae-air.com
The manufacturer works to continually improve its products. It reserves the right to change design and specifications without notice. ©2023 First Co., Applied Environmental Air

References

• Firstco

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