Thermo Pride Air Handler Modular MV User Manual

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Page 1

MODULAR

INSTALLATION MANUAL

MAC-226 ECN 5287-MA 121005

VARIABLE SPEED AIR HANDLERS

MODELS: MV

LIST OF SECTIONS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

ELECTRIC HEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 5

LOW VOLTAGE CONTROL CONNECTIONS . . . . . . . . . . . . . . . . . . 5

REQUIRED CONTROL SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

LIST OF FIGURES

Typical Installation with MC or FC Evaporator Coil . . . . . . . . . . . . . . .3

Coil and Air Handler Attachment Details . . . . . . . . . . . . . . . . . . . . . . .3

Gasket Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Dimensions & Duct Connection Dimensions . . . . . . . . . . . . . . . . . . . . 4

Typical Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Air Handler Control Board – Communications Connections . . . . . . . .6

LIST OF TABLES

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Low Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Heat Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Comfort Setting Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Physical and Electrical Data - Cooling Only (60 Hz) . . . . . . . . . . . . . 11

Electrical Data - Cooling Only (60 Hz) . . . . . . . . . . . . . . . . . . . . . . . . 11

Conversion Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical Data - 1 Ø - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electrical Data - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

ISO 9001

Certified Quality

Management System

LINE POWER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

AIRFLOW AND COMFORT SETTING SELECTION . . . . . . . . . . . . 10

UNIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Cooling Models with and without Electric Heat Wiring . . . . . . . . . . . . 7

Two-Stage Heat Pump Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Air Handler with Communicating AC or HP . . . . . . . . . . . . . . . . . . . . 8

Line Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Electrical Data - (For Single Source Power Supply) -

Copper Wire 1 Ø - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical Data - (For Single Source Power Supply) -

Copper Wire - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical Data - (For Multi-Source Power Supply) -

Copper Wire 1 Ø - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Electrical Data - (For Multi-Source Power Supply) -

Copper Wire - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Air Handler Air Flow Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SECTION I: GENERAL

This modular air handler provides the flexibility for installation in any upflow, downflow, or horizontal application. These versatile models may be used for cooling or heat pump operation with or without electric heat.

A BRAND LABEL (available from Distribution) may be applied to the center of the blower access panel.

The unit can be positioned for bottom return air in the upflow position, top return air in the downflow position, and right or left return in the horizontal position.

Top and side power wiring and control wiring, accessible screw terminals for control wiring and easy to install electric heaters all combine to make the installation easy, and minimize installation cost.

SECTION II: SAFETY

This is a safety alert symbol. When you see this symbol on labels or in manuals, be alert to the potential for personal injury.

Understand and pay particular attention to the signal words DANGER,

WAR NIN G, or CAUTION.

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

WAR NIN G indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury

CAUTION indicates a potentially hazardous situation, which, if not

avoided may result in minor or moderate injury. alert against unsafe practices and hazards involving only property damage.

It is also used to

Improper installation may create a condition where the operation of the product could cause personal injury or property damage.

Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for assistance or for additional information, consult a qualified contractor, installer or service agency.

This product must be installed in strict compliance with the installation instructions and any applicable local, state, and national codes including, but not limited to building, electrical, and mechanical codes.

FIRE OR ELECTRICAL HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. A fire or electrical hazard may result causing property damage, personal injury or loss of life.

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1. Install this air handler only in a location and position as specified in SECTION III of these instructions.

2. Always install the air handler to operate within the air handler’s intended maximum outlet air temperature. Only connect the air handler to a duct system which has an external static pressure within the allowable range, as specified on the air handler rating plate.

3. When an air handler is installed so that supply ducts carry air circulated by the air handler to areas outside the space containing the air handler, the return air shall also be handled by duct(s) sealed to the air handler casing and terminating outside the space containing the air handler.

4. The air handler is not to be used for temporary heating of buildings or structures under construction.

5. The size of the unit should be based on an acceptable heat loss or gain calculation for the structure. ACCA, Manual J or other approved methods may be used.

SAFETY REQUIREMENTS

1. This air handler should be installed in accordance with all national and local building/safety codes and requirements, local plumbing or wastewater codes, and other applicable codes.

2. Refer to the unit rating plate for the air handler model number, and then see the dimensions page of this instruction for supply air plenum dimensions in Figure 3. The plenum must be installed according to the instructions.

3. Provide clearances from combustible materials as listed under Clearances to Combustibles.

4. Provide clearances for servicing ensuring that service access is allowed for electric heaters and blower.

5. Failure to carefully read and follow all instructions in this manual can result in air handler malfunction, death, personal injury and/or property damage.

6. Check the rating plate and power supply to be sure that the electrical characteristics match.

7. Air handler shall be installed so the electrical components are protected from water.

8. Installing and servicing heating/cooling equipment can be hazardous due to the electrical components. Only trained and qualified personnel should install, repair, or service heating/cooling equipment. Untrained service personnel can perform basic maintenance functions such as cleaning and replacing the air filters. When working on heating/cooling equipment, observe precautions in the manuals and on the labels attached to the unit and other safety precautions that may apply.

9. These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances these instructions exceed certain local codes and ordinances, especially those who have not kept up with changing residential and non-HUD modular home construction practices. These instructions are required as a minimum for a safe installation.

INSPECTION

As soon as a unit is received, it should be inspected for possible damage during transit. If damage is evident, the extent of the damage should be noted on the carrier’s freight bill. A separate request for inspection by the carrier’s agent should be made in writing. Also, before installation the unit should be checked for screws or bolts, which may have loosened in transit. There are no shipping or spacer brackets which need to be removed.

Also check to be sure all accessories such as heater kits, suspension kits, and coils are available. Installation of these accessories or field conversion of the unit should be accomplished before setting the unit in place or connecting any wiring, electric heat, ducts or piping.

LIMITATIONS

These units must be wired and installed in accordance with all national and local safety codes.

Voltage limits are as follows:

Air Handler Voltage Voltage code

208/230-1-60 21 187-253

1. Rated in accordance with ARI Standard 110, utilization range “A”.

Airflow must be within the minimum and maximum limits approved for electric heat, evaporator coils and outdoor units.

Entering Air Temperature Limits

Wet Bulb Temp.°F Dry Bulb Temp. °F

Min. Max. Min. Max.

57 72 65 95

Normal Operating

Voltage Range

SECTION III: UNIT INSTALLATION

CLEARANCES

Clearances must be taken into consideration, and provided for as follows:

1. Refrigerant piping and connections - minimum 12” recommended.

2. Maintenance and servicing access - minimum 36” from front of unit recommended for blower motor / coil replacement.

3. Condensate drain lines routed to clear filter and panel access.

4. Filter removal - minimum 36” recommended.

5. A combustible floor base accessory is available for downflow applications of this unit, if required by local code.

LOCATION

Location is usually predetermined. Check with owner’s or dealer’s installation plans. If location has not been decided, consider the following in choosing a suitable location:

1. Select a location with adequate structural support, space for service access, clearance for air return and supply duct connections.

2. Use hanging brackets to wall mount unit as shown.

3. Normal operating sound levels may be objectionable if the air handler is placed directly over some rooms such as bedrooms, study, etc.

4. Select a location that will permit installation of condensate line to an open drain or outdoors allowing condensate to drain away from structure.

5. When an evaporator coil is installed in an attic or above a finished ceiling, an auxiliary drain pan should be provided under the air handler as is specified by most local building codes.

6. Proper electrical supply must be available.

NOTICE

In severe high humidity, high temperature indoor unit environments, seal completely with adequate fiberglass insulation using vapor barrier on the outside.

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FIGURE 1: Typical Installation with MC or FC Evaporator Coil (MC required for horizontal applications)

UPFLOW

DOWNFLOW

HORIZONTAL RIGHT

HORIZONTAL LEFT

DOWNFLOW AND HORIZONTAL CONVERSION

These air handler units are supplied ready to be installed in a upflow, downflow and left or right hand horizontal position.

If the unit is to be installed with an evaporator coil, refer to Figure 1 for unit positioning information.

TIE PLATE

AIR HANDLER

COIL

UPFLOW & HORIZONTAL

APPLICATIONS

DOWNFLOW

APPLICATION

TOP PLATE

AIR HANDLER

FIGURE 2: Coil and Air Handler Attachment Details

AIR HANDLER AND COIL UPFLOW AND HORIZONTAL

1. Apply neoprene gasket to top of coil casing.

2. Position blower casing over coil opening.

3. Attach tie plate to casings of air handler and coil using screws.

4. Remove blower access panel and coil filter door.

5. Disconnect wiring to blower motor. *Note location of wires as these

will be reconnected in a later step.

6. Remove blower motor and housing.

7. Fasten duct flanges of coil to duct flanges of air handler with screws. See Figure 1.

8. Secure base of air handler to top of coil using screws.

9. Locate 2” wide foam gasket.

10. On the interior of the air handler/coil attachment point, apply foam gasket over duct flanges on the sides and back.

11. Reinstall blower motor and housing by reversing the process in Steps 3 and 4.

12. Complete electrical and blower speed connections as outlined in other sections of this document.

13. Reposition and replace blower access panel.

AIR HANDLER AND COIL DOWNFLOW

1. Position blower casing over duct connection and secure such that the supply air end of the blower is down.

2. Apply neoprene gasket to return-air side of air handler.

3. Place coil casing over blower return opening.

4. Attach tie plate to casings of air handler and coil using screws.

5. Remove blower access panel and coil filter door.

6. Disconnect wiring to blower motor.

*Note location of wires as these will be reconnected in a later step.

7. Remove blower motor and housing.

8. Fasten duct flanges of coil to base of air handler with screws. See Figure 1.

9. Secure base of air handler to base of coil using screws.

10. Locate 2” wide foam gasket.

11. On the interior of the air handler/coil attachment point, apply foam gasket over duct flanges on the sides and back.

12. Reinstall blower motor and housing by reversing the process in Steps 3 and 4.

13. Complete electrical and blower speed connections as outlined in other sections of this document.

14. Reposition and replace blower access panel.

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FIGURE 3: Gasket Location

FIGURE 4: Dimensions & Duct Connection Dimensions

TABLE 1:

Dimensions

Models

ABDE JK

Height Width Power Control

12B 12D 24-1/2 23-1/2 21-19/32 16C 21 20 18-3/32

20D 24-1/2 23-1/2 21-19/32

1. Actual size (Conduit size).

10-3/8”

CIRCUIT BREAKER

PANEL

21-1/2”

20-1/2”

Dimensions

17-1/2 16-1/2 14-19/32

TOP OUTLET DIMENSIONS

BOTTOM INLET

DIMENSIONS

Wiring Knockouts

7/8” (1/2”) 1 3/8” (1”)

7/8” (1/2”)

1 23/32” (1 1/4”)

DUCT CONNECTORS

Use 1/2" screws to connect ductwork to bottom of unit. Longer screws will pierce the drain pan and cause leakage. If pilot holes are drilled, drill only though field duct and unit bottom flange.

Air supply and return may be handled in one of several ways best suited to the installation. See Figure 3 for dimensions for duct inlet and outlet connections.

The vast majority of problems encountered with combination heating and cooling systems can be linked to improperly designed or installed duct systems. It is therefore highly important to the success of an installation that the duct system be properly designed and installed.

Use flexible duct collars to minimize the transmission of vibration/noise into the conditioned space. If electric heat is used, non-flammable material must be used.

Where return air duct is short, or where sound may be a problem, sound absorbing glass fiber should be used inside the duct. Insulation of duct work is a must where it runs through an unheated space during the heating season or through an uncooled space during the cooling season. The use of a vapor barrier is recommended to prevent absorption of moisture from the surrounding air into the insulation.

The supply air duct should be properly sized by use of a transition to match unit opening. All ducts should be suspended using flexible hangers and never fastened directly to the structure. This unit is not designed for non-ducted (freeblow) applications. Size outlet plenum or transition to discharge opening sizes shown in Figure 3.

Duct work should be fabricated and installed in accordance with local and/or national codes. This includes the standards of the National Fire Protection Association for Installation of Air-Conditioning and Ventilating Systems, NFPA No. 90B.

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AIR FILTERS

Air filters and filter racks must be field supplied.

Equipment should never be operated without filters.

SUSPENSION KITS

A suspension kit is available. Models 1BH0601 (unit size 018-060) is designed specifically for the units contained in this instruction (upflow application only). For installation of these accessory kits, see the instructions packed with the kit.

HORIZONTAL SUSPENSION

For suspension of these units in horizontal applications, it is recommended to use angle steel support brackets with threaded rods, supporting the units from the bottom, at the locations shown in Figure 4.

SUSPENSION SUPPORT LOCATIONS FOR HORIZONTALAPPLICATIONS

MIN. 3/8”

THREADED ROD

MIN. 1-1/2” x 1-1/2” Angle

Recommended length

26” minimum

with 2” clearance on

both sides of Air Handler

Units

(Nominal Tons)

1-1/2 - 3 Ton 16” 48” 22”

3-1/2 - 5 Ton 24” 53” - 58” 22”

FIGURE 5: Typical Horizontal Installation

Dimension

WW XX YY

1-1/2

SECTION IV: ELECTRIC HEATER INSTALLATION

If the air handler requires electric heat, install the electric heat kit according to the installation instructions included with the kit. After installing the kit, mark the air handler nameplate to designate the heater kit that was installed. If no heater is installed, mark the name plate appropriately to indicate that no heat kit is installed.

The HEAT ENABLE jumper (See Figure 5) must be moved to the HEAT position to enable operation of the heater

Use only 4HK heater kits, as listed on Air Handler name plate and in these Instructions. Use data from Tables 9 and 12 for information on required minimum motor speed tap to be used for heating operation, maximum over-current protection device required and minimum electrical supply wiring size required for listed combination of Air Handler and Heater Kit.

For Upflow, Downflow and Horizontal right hand applications the kits can be installed without modification.

Field modification is required for Horizontal left-hand airflow application only. Follow instructions with heater for modification.

NOTICE

If a heat kit with a circuit breaker is installed in the air handler, the circuit breaker cover cladding must be removed to gain access to the sheet metal cover plate. Some local codes may require that the circuit breaker remain visible. If so, do not re-install circuit breaker cover cladding.

SECTION V: LOW VOLTAGE CONTROL CONNECTIONS

This air handler can be connected to the wall thermostat and outdoor A/ C or heat pump using either conventional low voltage (24 VAC) thermostat wiring OR using four-wire digital communications wiring. To use conventional low voltage wiring, see the section below entitled “Conventional Low Voltage Control Wiring”. To use four-wire communications control wiring, see the section below entitled “Control Wiring using Communicating Controls”.

The Communicating System consists of several intelligent communicating components including the Communicating Thermostat Control (touch-screen wall thermostat), variable speed air handler, air conditioner (15 and 18 SEER premium air conditioners) or heat pump (13, 15 and 18 SEER premium heat pumps), which continually communicate with each other via a four-wire connection called the A-R-C-B. Commands, operating conditions, and other data are passed continually between components over the A-R-C-B bus. See Figure 8. The result is a new level of comfort, versatility, and simplicity.

In order to use this air handler in full communications (COMM) mode, it MUST be installed with the matching touch-screen Communicating Control (wall thermostat) and an outdoor air conditioner or heat pump with a fully communicating control.

This air handler may also be used along with the Communicating Thermostat Control and a non-communicating outdoor air conditioner through the addition of a communicating Outdoor Aux Control board to the outdoor unit. This system allows full communication between the air handler and thermostat and limited communication to the outdoor unit.

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FIGURE 6: Air Handler Control Board – Communications Connections

SPARE JUMPER

HEAT ENABLE JUMPER

HUMIDIFIER OUT PUT

EAC OUTPUT

THERMOSTAT CONNECTIONS

CONTINUOUS FAN JUMPER

BLOWER SPEED JUMPERS

HUMIDSTAT JUMPER

AC/HP JUMPER

CONVENTIONAL LOW VOLTAGE CONTROL WIRING (24 VAC)

The 24 volt power supply is provided by an internally wired low voltage transformer which is standard on all models, However, if the unit is connected to a 208 volt power supply, the low voltage transformer must be rewired to the 208 volt tap. See the unit wiring label.

Field supplied low voltage wiring can exit the unit on the top right hand corner or the right hand side panel. Refer to Figure 3.

Remove desired knockout and pierce foil faced insulation to allow wiring to pass through. Use as small of a hole as possible to minimize air leakage.

Install a 7/8” plastic bushing in the selected hole and keep low voltage wiring as short as possible inside the control box.

To further minimize air leakage, seal the wiring entry point at the outside of the unit.

The field wiring is to be connected at the screw terminals of the control board. Refer to Figure 6 or 7.

NOTICE

All wiring must comply with local and national electrical code requirements. Read and heed all unit caution labels.

It is possible to vary the amount of electric heat turned on during the defrost cycle of a heat pump. Standard wiring will only bring on the first stage of electric heat during defrost. See Heat Output and Limit Connections and Table 4 for additional information on heat during defrost cycle.

TABLE 2:

Low Voltage Connections

Terminal Signal Comment

R 24 VAC power (fused)

G Continuous Fan operation

Y/Y2

HUM Humidity switch input

COM 24 VAC common

Second or full stage compressor operation

First stage compressor

operation

W2 Second stage heat operation

W1 First stage heat operation

O Reversing valve operation

Connection point for

X/L

heat pump fault indicator

Not used with outdoor units having one stage compressors.

24 VAC will be present at this terminal when the MODE jumper is in the AC position. This is normal.

24 VAC will be present at this terminal when the HUM STAT jumper is in the NO position. This is normal.

This terminal is a connection point only and does not affect air handler control operation.

The low voltage connections may be connected to the screw terminals or the quick connect terminals. The screw terminals and the quick connect terminals are physically connected on the control board.

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Air Handler Control Wiring

Typical A/C - Cooling only Applications

THERMOSTAT

AIR HANDLER

BOARD

1-STAGE

AIR CONDITIONING

Y/Y2

HUM

X/L

COM

HUMIDISTAT

THERMOSTAT

AIR HANDLER

BOARD

1-STAGE

AIR CONDITIONING

Y/Y2

HUM

X/L

COM

HUMIDISTAT

Air Handler Control Wiring

Typical A/C with Electric Heat Applications

FIGURE 7: Cooling Models with and without Electric Heat Wiring

* Optional dehumidification humidistat switch contacts open on humidity rise.

NOTES:

1. “Y/Y2” Terminal on air handler control board must be connected for full CFM and applications requiring 60 second blower off delay for SEER enhancement.

2. Remove humidistat jumper on air handler control board.

3. For heat pump applications - set MODE jumper on air handler control board to the HP position.

4. To change quantity of heat during HP defrost cycle - reverse connections at W1 and W2 on air handler control board.

CONTROL WIRING - Air Handler & UPG HP Systems

Two Stage H/P with York Guard VI Board & Copeland “Ultra Tech”

Conventional Application - Not Hot Heat Pump

FIGURE 8: Two-Stage Heat Pump Wiring

* Optional dehumidification humidistat switch contacts open on humidity rise.

NOTES:

1. “Y/Y2” Terminal on air handler control board must be connected for full CFM and applications requiring 60 second blower off delay for SEER enhancement.

2. Remove humidistat jumper on air handler control board.

3. For heat pump applications - set MODE jumper on air handler control board to the HP position.

4. To change quantity of heat during HP defrost cycle - reverse connections at W1 and W2 on air handler control board

CONTROL WIRING USING COMMUNICATING CONTROLS

Use the wiring diagram below to connect the air handler control, Communicating Control (wall thermostat) and communicating outdoor unit. Be sure that all of the “A” terminals are connected together, all of the “B” terminals are connected together, all of the “C” terminals are connected

THERMOSTAT

RR R GG

O O

X/L X/L X/L

AIR HANDLER

BOARD

Y/Y2

HUM

COM

HUMIDISTAT

together and all of the “R” terminals are connected together. See Figure

8. When using a fully communicating system, the large screw terminals

(C, G, R, etc.) on the air handler control are not used. The four small screw terminals in the terminal block on the end of the furnace control should be used.

2 - STAGE SCROLL

HEAT PUMP

Y2 OUT

W2 OUT

W1 OUT

Page 8

Touch Screen

Communicating

Control

A+

B-

Modulating Furnace

Communicating

Control

A+

B-

COMP

DHUM

Y/Y2

Air Conditioner/Heat Pump

Communicating Control

A+

GND

B-

FIGURE 9: Air Handler with Communicating AC or HP

HUMIDITY SWITCH INPUT

The air handler control is designed to work with a humidity control that closes when the humidity is below the set-point. The control is open when the humidity is above the set-point. This humidity control may be referred to as a humidistat or a dehumidistat.

The humidity switch controls both humidification and de-humidification operation of the control. The control provides humidification using the HUM OUT relay output and de-humidification by lowering the blower speed. This is accomplished using the de-humidification input of the motor for variable speed models. The humidity switch should be connected to the R and HUM terminals of the control. See Figures 6 or 7.

Field supplied low voltage wiring can exit the unit on the top right hand corner or the right hand side panel. Refer to Figure 3.

Remove desired knockout and pierce foil faced insulation to allow wiring to pass through. Use as small of a hole as possible to minimize air leakage.

Install a 7/8” plastic bushing in the selected hole and keep low voltage wiring as short as possible inside the control box.

To further minimize air leakage, seal the wiring entry point at the outside of the unit.

The field wiring is to be connected at the screw terminals of the control board. Refer to Figures 6 or 7.

NOTICE

All wiring must comply with local and national electrical code requirements. Read and heed all unit caution labels.

The low voltage connections may be connected to the screw terminals or the quick connect terminals. The screw terminals and the quick connect terminals are physically connected on the control board.

SECTION VI: REQUIRED CONTROL SET-UP

The following steps must be taken at the time of installation to insure proper system operation.

1. Consult system wiring diagram to determine proper thermostat wiring for your system.

2. If heat kit is installed, change HEAT ENABLE jumper from NO HEAT to HEAT position.

3. If a humidistat is installed, change HUM STAT jumper from NO to YES.

4. Set the MODE jumper to A/C (Air Conditioner) or HP (Heat Pump) position depending on the outdoor unit included with the system.

5. Set airflow and comfort setting jumper to proper positions.

FUNCTIONALITY AND OPERATION

Jumper Positions

HEAT ENABLE Jumper

The HEAT/NO HEAT jumper configures the control for heat kit operation. The jumper must be in the HEAT position if a heat kit is installed with the air handler. With the jumper in the NO HEAT position, the control will not energize the heat relay outputs or sense the limit switch input. If the jumper is not present, the control will operate as if the jumper is in the HEAT position. If the jumper is not present and a heat kit is not present, the control will sense an open limit condition and the blower will run continuously.

Hum Stat Jumper

The HUM STAT jumper configures the control to monitor the humidity switch input. With the jumper in the NO position, the control will energize the HUM terminal with 24 VAC continually. With the jumper in the YES position, the control will monitor the HUM input to control the HUM OUT output to control an external humidifier. If the jumper is not present, the control will operate as if the jumper is in the YES position.

Mode Jumper

The MODE jumper configures the control to operate properly with an air conditioner (AC position) or heat pump (HP position). With the jumper in the AC position, the control will energize the O terminal with 24 VAC continually. With the jumper in the HP position, the O input signal is received from the room thermostat. If the jumper is not present, the control will operate as if the jumper is in the HP position.

SPARE Jumper

The control includes a spare jumper that can be used if a jumper is lost. The SPARE jumper does not have any effect on the operation of the control.

Airflow and Comfort Setting Jumpers

See separate section.

Status and Fault Codes

The control includes an LED that displays status and fault codes. These codes are shown in Table 3. The control will display the fault codes until power is removed from the control or the fault condition is no longer present.

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TABLE 3:

Status

No power to control OFF

Normal operation 2s ON / 2s OFF

Control in test mode Rapid Flash

Control failure ON

Limit Faults

Limit switch currently open (not in lockout) 1

Multiple limit openings with no call for heat 2

Multiple limit openings during one call for heat 3

Single long duration limit opening 4

Multiple long duration limit openings 5

Fan failure 6

Wiring Related Faults

Simultaneous call for heating and cooling 7

Internal Control Faults

Control recovered from internal event 9

Fault Codes

Fault or Status Condition

LED1 (RED)

Flash Code

External Relay Outputs

The control includes two outputs to drive external relays having 24 VAC coils. The outputs have a maximum rating of 1.0 Amp pilot duty at 24 VAC .

HUM OUT

The HUM OUT output can be used to drive an external relay or solenoid (24 VAC coil) to control a humidifier. The output is energized when the HUM input is energized, the HUM STAT is in the YES position, and the control has a thermostat call for heating (heat pump or electric heat).

EAC

The EAC output can be used to drive an external relay (24 VAC coil) to control an electronic air cleaner. The output is energized whenever the blower relay on the control is energized.

Heat Output and Limit Connections

The control is connected to the heater relays and limit switch using the 6-pin connector. The relay outputs and the limit switch signal are 24 VDC.

The control energizes the heat relays and senses the limit switch input as shown in Table 4 when the HEAT ENABLE jumper is in the HEAT position.

TABLE 4:

The control energizes the first stage of electric heat immediately, the second stage 10 seconds after the call for second stage heat, and the third stage 20 seconds after the call for third stage heat. Depending on the heat kit installed in the air handler, the control provides the flexibility to configure the amount of heat delivered with the

Heat Relays

Input Heat Relay Output

W1 HT1

W2 HT1 and HT2

W1 and W2 HT1 and HT2 and HT3

first stage heating call. As an example, when the control’s W1 input is connected to the room thermostat’s first stage heat signal, a call for first stage heat will energize one heating element (HT1). If the control’s W2 input is connected to the room thermostat’s first stage heat signal, a call for first stage heat will energize two heating elements (HT1 and HT2). With either configuration, the control will energize three heating elements (HT1, HT2, and HT3) when it receives a first and second stage heat input from the thermostat.

Limit Switch and Lockout Operation

Limit Switch Operation

If the HEAT ENABLE jumper is in the HEAT position and the limit switch opens (fault code 1), the control will immediately de-energize all electric heat relay outputs and energize the blower (if it wasn’t already energized). When the limit switch closes, the control will re-energize electric heat according to the thermostat inputs using normal timings.

Fan On Lock Condition

If the limit switch opens multiple times during a single call for electric heat (fault code 3) or if the limit switch opens for a long duration (fault code 4), the control will energize the blower until power is removed from the control. The control will cycle the heat outputs on and off as the limit re-closes and opens. The constant fan operation will signal the homeowner that a problem has occurred and a service call is required.

Soft Lockout

If the limit switch opens for a second long duration period during a single call for heat (fault code 5), the control will keep the blower locked on and lock out the heat outputs for one hour. The control will only reset this one hour lockout when the power is removed from the control. After the one hour period has passed, the control will re-energize electric heat according to the thermostat inputs using normal timings. The blower will remain locked on from the first long duration limit opening.

Hard Lockout

The control has a hard lockout condition during which the control will keep all heat outputs de-energized until power is removed from the control. The control de-energizes the blower five minutes after entering the hard lockout condition. If the limit switch closes and re-opens during the one hour soft lockout period, the control will enter a hard lockout condition and continue to indicate a fault code 5. If the limit switch opens twice when no call for electric heat is present (fault code 2), the control will enter a hard lockout condition. If the limit switch opens multiple times soon after a soft lockout reset (fault code 6), the control will enter a hard lockout condition.

Wiring Related Faults

If the control receives a simultaneous call for heating and cooling (fault code 7), the control will perform both heating and cooling operations.

SECTION VII: LINE POWER CONNECTIONS

Power may be brought into the unit through the supply air end of the unit (top when unit is vertical) or the left side panel. Use the hole appropriate to the unit’s orientation in each installation to bring conduit from the disconnect. The power lead conduit should be terminated at the electrical control box. Refer to Tables 10, 11, 13 or 14 to determine proper wire sizing. Also see Figure 3. To minimize air leakage, seal the wiring entry point at the outside of the unit.

Page 10

ELECTRIC HEAT

WITHOUT CIRCUIT BREAKER

SINGLE SOURCE (2.5 - 10 KW)

GND. LUG

POWER SUPPLY

GND. LUG

ELECTRIC HEAT

WITHOUT CIRCUIT BREAKER

3 PHASE (10 - 15 KW)

GND. LUG

POWER SUPPLY

GND. LUG

1 PHASE ELECTRIC HEAT

WITH CIRCUIT BREAKER

AS SHIPPED FROM FACTORY

SINGLE SOURCE

(2.5 - 25 KW) - 25 KW SHOWN

GND. LUG

POWER SUPPLY

GND. LUG

1 PHASE ELECTRIC HEAT

WITH CIRCUIT BREAKER

& BREAKER BAR REMOVED

MULTI-SOURCE (15 - 25 KW) - 25 KW SHOWN

GND. LUG

POWER SUPPLY 1

GND. LUG

POWER SUPPLY 2

POWER SUPPLY 3

TYPICAL WIRING WITHOUT ELECTRIC HEAT

GND. LUG

POWER SUPPLY

GND. LUG

POWER WIRING (208/230-1-60)

NOTE: USE ONLY COPPER CONDUCTORS

TERMINAL BLOCK

MAYBE1,2,OR3 CIRCUIT BREAKERS

(JUMPER BAR)

CONNECT TRANSFORMER LEADS WITH WIRE NUTS (TYPICAL ALL HEAT KITS)

FIGURE 10: Line Power Connections

SECTION VIII: AIRFLOW AND COMFORT SETTING SELECTION

AIRFLOW SELECTION

The airflow and comfort setting selection jumpers must be set properly at the time of installation for proper system operation. Place jumpers in the proper locations based on the information shown in Table 15 and Figure 5. Inputs to air handler control board are passed to the motor which determines the target CFM to be delivered. The following inputs will produce the CFM per the appropriate table and selected tap settings.

NOTICE

Incorrect airflow and comfort settings may result in decreased system efficiency and performance.

These variable speed air handlers are designed to deliver constant airflow (CFM) regardless of the external static pressure (ESP) in the ductwork. Therefore, if too many supply registers are closed, a filter becomes clogged, or there is a restriction in the ductwork, the motor will automatically operate at a higher speed to compensate for the higher ESP. This may result in a higher operating sound level.

To Set Cooling Airflow:

Refer to the outdoor unit technical guide for the recommended airflow with the matching evaporator coil. Refer to Table 15 for the possible high speed cooling and heat pump airflow selections.

Find the recommended system airflow in Table 15 for the installed air handler model.

Select the COOL airflow you need from Table 15. Set the COOL and ADJUST Jumpers on the control as indicated in Table 15.

To Set Heat Pump Airflow:

The heat pump airflow setting is the same as the cooling airflow setting. No additional airflow setting is required. However, you must set the MODE jumper to the HP position for proper system operation (See Figure 5).

To Set Electric W1 Heat Airflow:

The blower speed required for 1st stage electric heat is different than cooling. Refer to Table 15 for the possible CFM selections. Refer to Table 9 for the minimum required airflow for the electric heater installed. Find the desired airflow in Table 15 for low heat. Set the HEAT jumper on the control as indicated in Table 15.

To Set W2 Electric Heat Airflow:

Airflow for any W2 input, which is for Stages 2 & 3 of electric heat, is the indicated CFM for high heat tap selection on Table 15.

DO NOT change the ADJUST tap position on the control as this will change your cooling airflow previously selected.

Fan Only CFM:

When the connection is made from "R" to "G", the fan only mode is activated. In this mode, the airflow will depend on the position of the CONT Fan jumper. In the “H” position, the blower will deliver 85-90% of full capacity. In the “M” position, the blower will deliver 60-65% of full capacity. In the “L” position, the blower will deliver 30-35% of full capacity.

Blower Ramp-Up /Ramp-Down

To minimize the sound made by the blower when it speeds up or slows down, the blower will slowly ramp up or down from one speed to another. Changes in blower speed during A/C or heat pump heating can take up to 30 seconds. Changes in blower speed during electric strip heating can take up to 15 seconds.

COMFORT SETTINGS

TABLE 5:

Normal

The normal setting provides a ramp-up from zero airflow to full capacity and a ramp-down from full capacity back to zero airflow.

Humid

The humid setting is best-suited for installations where the humidity is frequently very high during cooling season, such as in the southern part of the country. On a call for cooling, t

he blower will ramp up to 50% of full capacity and will stay there for two minutes, then will ramp up to 82% of full capacity and will stay there for five minutes, and then will ramp up to full capacity, where it will stay until the wall thermostat is satisfied.

Comfort Setting Selection

DELAY TAP COMFORT SETTING

ANormal BHumid CDry D Temperate

Page 11

Dry

The dry setting is best suited to parts of the country where excessive humidity is not generally a problem, where the summer months are usually dry. On a call for cooling the motor will ramp up to full capacity and will stay there until the thermostat is satisfied. At the end of the cooling cycle, the blower will ramp down to 50% of full capacity where it will stay for 60 seconds. Then it will ramp down to zero.

Temper at e

The temperate setting is best suited for most of the country, where neither excessive humidity nor extremely dry conditions are the norm. On a call for cooling, the motor will ramp up to 63% of full capacity and will stay there for 90 seconds, then will ramp up to full capacity. At the end of the cooling cycle, the motor will ramp down to 63% of full capacity and will stay there for 30 seconds, then will ramp down to zero.

SECTION IX: UNIT DATA

TABLE 6:

Models MV12B MV12D MV16C MV20D

Blower - Diameter x Width 10 x 7 10 x 10 10 x 10 10 x 10

Motor

Voltage 230

Amps Full Load (230) 4.3 4.3 5.0 7.0

Permanent Filter

Shipping / Operating Weight (lbs.) 75/71 88/82 88/82 94/88

1. Field Supplied.

TABLE 7:

1. OCP = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.

TABLE 8:

Physical and Electrical Data - Cooling Only (60 Hz)

HP 1/2 1/2 3/4 1

Nominal RPM 1200 1200 1200 1200

Type DISPOSABLE OR PERMANENT

Size 16 x 20 x1 24 x 20 x 1 20 x 20 x 1 24 x 20 x1

Filter Bulk Pack 1PF0601BK 1PF0604BK 1PF0602BK 1PF0604BK

Electrical Data - Cooling Only (60 Hz)

Total Motor Amps Minimum Circuit Ampacity

Models

12B 4.7 4.3 5.9 5.4 15 14

12D 4.7 4.3 5.9 5.4 15 14

16C 6.1 5.0 7.6 6.9 15 14

20D 7.8 7.0 9.7 8.8 15 14

Conversion Table

kW & MBH Conversions - for Total Power Input Requirement

208V

FOR

230V 240V .918

220V 240V .840

60 Hertz 60 Hertz

208V 230V 208V 230V

240V

OPERATION MULTIPLY

TABULATED kW & MBH BY

Max. O.C.P.

Amps/Type

.751

Minimum Wire

Size A.W.G.

Page 12

TABLE 9:

Electrical Data - 1 Ø - 208/230-1-60

Models

Heater

Models*

4HK*6500506 0.5 Heat-C 3.6 4.8 12.3 16.4 3.6 4.8 3.6 4.8 3.6 4.8

4HK*6500806 0.5 Heat-C 5.6 7.5 19.2 25.6 2.8 3.75 5.6 7.5 5.6 7.5

12B

4HK*6501006 0.5 Heat-B 7.2 9.6 24.6 32.8 3.6 4.8 7.2 9.6 7.2 9.6

4HK16501306 0.5 Heat B 9.8 13 33.3 44.4 3.3 4.3 6.5 8.7 9.8 13.0

4HK165N1506 0.5 Heat-B 10.8 14.4 36.9 49.1 3.6 4.8 7.2 9.6 10.8 14.4

4HK*6500506 0.5 Heat-C 3.6 4.8 12.3 16.4 3.6 4.8 3.6 4.8 3.6 4.8

4HK*6500806 0.5 Heat-C 5.6 7.5 19.2 25.6 2.8 3.75 5.6 7.5 5.6 7.5

4HK*6501006 0.5 Heat-B 7.2 9.6 24.6 32.8 3.6 4.8 7.2 9.6 7.2 9.6

12D

4HK16501306 0.5 Heat B 9.8 13 33.3 44.4 3.3 4.3 6.5 8.7 9.8 13.0

4HK16501506 0.5 Heat-B 10.8 14.4 36.9 49.1 3.6 4.8 7.2 9.6 10.8 14.4

4HK16501806 0.5 Heat-A 13.2 17.6 45.1 60.1 3.3 4.4 6.6 8.8 13.2 17.6

4HK16502006 0.5 Heat-A 14.4 19.2 49.2 65.5 3.6 4.8 7.2 9.6 14.4 19.2

4HK*6500506 0.5 Heat-D 3.6 4.8 12.3 16.4 3.6 4.8 3.6 4.8 3.6 4.8

4HK*6500806 0.5 Heat-D 5.6 7.5 19.2 25.6 2.8 3.75 5.6 7.5 5.6 7.5

4HK*6501006 0.5 Heat-C 7.2 9.6 24.6 32.8 3.6 4.8 7.2 9.6 7.2 9.6

16C

4HK16501306 0.5 Heat C 9.8 13 33.3 44.4 3.3 4.3 6.5 8.7 9.8 13.0

4HK16501506 0.5 Heat-C 10.8 14.4 36.9 49.1 3.6 4.8 7.2 9.6 10.8 14.4

4HK16501806 0.5 Heat-B 13.2 17.6 45.1 60.1 3.3 4.4 6.6 8.8 13.2 17.6

4HK16502006 0.5 Heat-B 14.4 19.2 49.2 65.5 3.6 4.8 7.2 9.6 14.4 19.2

4HK*6500506 0.5 Heat-C 3.6 4.8 12.3 16.4 3.6 4.8 3.6 4.8 3.6 4.8

4HK*6500806 0.5 Heat-C 5.6 7.5 19.2 25.6 2.8 3.75 5.6 7.5 5.6 7.5

4HK*6501006 0.5 Heat-C 7.2 9.6 24.6 32.8 3.6 4.8 7.2 9.6 7.2 9.6

20D

4HK16501306 0.5 Heat C 9.8 13 33.3 44.4 3.3 4.3 6.5 8.7 9.8 13.0

4HK16501506 0.5 Heat-C 10.8 14.4 36.9 49.1 3.6 4.8 7.2 9.6 10.8 14.4

4HK16501806 0.5 Heat-C 13.2 17.6 45.1 60.1 3.3 4.4 6.6 8.8 13.2 17.6

4HK16502006 0.5 Heat-C 14.4 19.2 49.2 65.5 3.6 4.8 7.2 9.6 14.4 19.2

4HK16502506 0.5 Heat-C 18.0 24.0 61.5 81.9 3.6 4.8 10.8 14.4 18.0 24.0

1. See conversion Table 10. * May be 0 (no breaker) or 1 (with breaker).

Max.

Static

Min.

Speed Tap

Total Heat

kW Staging

kW MBH W1 Only W2 Only W1 & W2

208v 230v 208v 230v 208v 230v 208v 230v 208v 230v

TABLE 10:

Electrical Data - 208/230-3-60

Models

12B 4HK06501025 0.5 Heat-B 7.2 9.6 24.6 32.8 7.2 9.6 7.2 9.6 7.2 9.6

12D

16C

20D

1. See conversion Table 10.

Heat Kit -

Three Phase

Max.

Static

Min.

Speed

Tap

Total Heat

KW MBH W1 Only W2 Only W1 + W2

208V 230V 208V 230V 208V 230V 208V 230V 208V 230V

KW Staging

4HK06501025 0.5 Heat-B 7.2 9.6 24.6 32.8 7.2 9.6 7.2 9.6 7.2 9.6

4HK06501525 0.5 Heat-B 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4 10.8 14.4

4HK06501825 0.5 Heat-A 12.9 17.2 44.7 58.7 12.9 17.2 12.9 17.2 12.9 17.2

4HK06501025 0.5 Heat-C 7.2 9.6 24.6 32.8 7.2 9.6 7.2 9.6 7.2 9.6

4HK06501525 0.5 Heat-C 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4 10.8 14.4

4HK06501825 0.5 Heat-B 12.9 17.2 44.7 58.7 12.9 17.2 12.9 17.2 12.9 17.2

4HK06501025 0.5 Heat-C 7.2 9.6 24.6 32.8 7.2 9.6 7.2 9.6 7.2 9.6

4HK06501525 0.5 Heat-C 10.8 14.4 36.9 49.1 10.8 14.4 10.8 14.4 10.8 14.4

4HK16502525 0.5 Heat-C 18.0 24.0 61.4 81.4 9.0 12.0 18.0 24.0 18.0 24.0

Page 13

TABLE 11:

Electrical Data - (For

Models

Single Source

Heater

Models*

Power Supply) - Copper Wire 1 Ø - 208/230-1-60

Heater

Amps

240V

Min. Circuit Ampacity

208V 230V 208V 230V 208V 230V

4HK*6500506 20.0 27.54 30.38 30 35 10 8

4HK*6500806 31.3 39.73 44.50 40 45 8 8

12B

4HK*6501006 40.0 49.21 55.38 50 60 8 6

4HK16501306 54.2 64.00 72.80 70 80 4 2

4HK165N1506 60.0 70.88 80.38 90 90 4 3

4HK*6500506 20.0 27.54 30.38 30 35 10 8

4HK*6500806 31.3 39.73 44.50 40 45 8 8

4HK*6501006 40.0 49.21 55.38 50 60 8 6

12D

4HK16501306 54.2 64.00 72.80 70 80 4 2

4HK16501506 60.0 70.88 80.38 90 90 4 3

4HK16501806 73.3 85.32 97.00 90 100 4 3

4HK16502006 80.0 92.54 105.38 100 125 3 1

4HK*6500506 20.0 29.29 31.88 30 35 10 8

4HK*6500806 31.3 41.48 46.00 45 50 8 8

4HK*6501006 40.0 50.96 56.88 60 60 6 6

16C

4HK16501306 54.2 66.40 75.20 70 80 4 2

4HK16501506 60.0 72.63 81.88 90 90 3 3

4HK16501806 73.3 87.07 98.50 90 100 3 2

4HK16502006 80.0 94.29 106.88 100 125 3 1

4HK*6500506 20.0 29.29 31.88 30 35 10 8

4HK*6500806 31.3 41.48 46.00 45 50 8 8

4HK*6501006 40.0 53.08 58.75 60 60 6 6

20D

4HK16501306 54.2 68.40 77.20 70 80 4 2

4HK16501506 60.0 74.75 83.75 90 90 3 3

4HK16501806 73.3 89.19 100.38 90 110 3 2

4HK16502006 80.0 96.42 108.75 100 125 3 1

4HK16502506 100.0 118.08 133.75 125 150 1 1/0

1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse. * May be 0 (no breaker) or 1 (with breaker).

Field Wiring

Max. O.C.P.

Amps/Type

75°C Wire Size - AWG

TABLE 12:

Electrical Data - (For

Models

Single Source

Heat Kit -

Three Phase

Power Supply) - Copper Wire - 208/230-3-60

Heater

Amps

240V

Min. Circuit Ampacity

208V 230V 208V 230V 208V 230V

Field Wiring

Max. O.C.P.

Amps/Type

75°C Wire Size - AWG

12B 4HK06501025 23.1 30.9 34.3 35 35 8 8

4HK06501025 23.1 30.9 34.3 35 35 8 8

12D

4HK06501525 34.7 43.4 48.8 45 50 8 8

4HK06501825 41.4 50.6 57.1 50 60 8 6

4HK06501025 23.1 32.6 35.1 35 35 8 8

16C

4HK06501525 34.7 45.1 49.6 45 50 8 8

4HK06501825 41.4 52.4 58.0 60 60 6 6

20D

1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.

2. Heaters are 3 Phase.

4HK06501025 23.1 34.8 37.6 35 40 8 8

4HK06501525 34.7 47.3 52.1 50 60 8 6

Page 14

TABLE 13:

Electrical Data - (For

Models

Heater

Models

Multi-Source

1st 2nd 3rd 1st 2nd 3rd 1st 2nd 3rd

Power Supply) - Copper Wire 1 Ø - 208/230-1-60

Min. Circuit Ampacity

Max. O.C.P.

Circuit Circuit Circuit

Amps/Type

75°C Wire Size - AWG

208/230 208/230 208/230 208/230 208/230 208/230 208/230 208/230 208/230

12B

4HK16501306 41.7/47.9 22.4/25.0 – 50/50 30/30 – 6/6 12/10 –

4HK165N1506 49.2/55.4 21.7 / 25.0 – 50/60 25/25 – 8 / 6 10/10 –

4HK16501306 41.7/47.9 22.4/25.0 – 50/50 30/30 – 6/6 12/10 –

12D

4HK16501506 49.2/55.4 21.7/25.0 – 50/60 25/25 – 8 / 6 10/10 –

4HK16501806 45.6/51.2 39.7/45.8 – 50/60 40/50 – 8 / 6 8/8 –

4HK16502006 49.2/55.4 43.3/50.0 – 50/60 45/50 – 8 / 6 8/8 –

4HK16501306 42.9/49.1 23.6/26.2 – 50/50 30/30 – 6/6 12/10 –

16C

4HK16501506 51.0/56.9 21.7/25.0 – 50/60 25/25 – 8 / 6 10/10 –

4HK16501806 17.3/52.7 39.7/45.8 – 50/60 40/50 – 8 / 6 8/8 –

4HK16502006 51.0/56.9 43.3/50.0 – 50/60 45/50 – 8 / 6 8/8 –

4HK16501306 43.9/50.1 24.6/27.2 – 50/60 30/30 – 6/6 10/10 –

4HK16501506 53.1/58.8 21.7/25.0 – 60/60 25/25 – 6 / 6 10/10 –

20D

4HK16501806 49.5/54.6 39.7/45.8 – 50/60 40/50 – 8 / 6 8/8 –

4HK16502006 53.1/58.8 43.3/50.0 – 60/60 45/50 – 6 / 6 8/8 –

4HK16502506 49.3/56.5 43.3/50.0 21.7/25.0 50/60 45/50 25/25 8 / 6 8/8 10/10

1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.

TABLE 14:

Electrical Data - (For

Models

Heater

Model

Multi-Source

Power Supply) - Copper Wire - 208/230-3-60

Minimum Circuit Ampacity

Max. O.C.P.

Amps/Type

75°C Wire Size - AWG

Circuit

1st 2nd 3rd 1st 2nd 3rd 1st 2nd 3rd

208/230 208/230 208/230 208/230 208/230 208/230 208/230 208/230 208/230

20D 4HK16502525 41.0/44.9 31.3/36.1 – 45/45 35/40 – 8/8 8/8 –

1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.

Page 15

TABLE 15:

Air Handler Air Flow Data

HIGH/LOW SPEED COOLING AND HEAT PUMP AIRFLOW

CFM m³/min

12B 12D 12B 12D

High Low High Low High Low High Low COOL Tap ADJ Tap 1385 896 1411 907 39.2 25.4 39.9 25.7 A B 1137 745 1159 767 32.2 21.1 32.8 21.7 B B 1203 777 1227 799 34.1 22.0 34.7 22.6 A A 1019 650 1007 662 28.8 18.4 28.5 18.7 B A 1085 690 1083 716 30.7 19.5 30.7 20.3 A C

943 615 958 629 26.7 17.4 27.1 17.8 C B 889 585 908 603 25.2 16.6 25.7 17.1 B C 746 493 767 537 21.1 14.0 21.7 15.2 D B 817 537 840 568 23.1 15.2 23.8 16.1 C A 646 467 660 516 18.3 13.2 18.7 14.6 D A 738 481 780 532 20.9 13.6 22.1 15.1 C C 580 465 603 517 16.4 13.2 17.1 14.6 D C

16C 20D 16C 20D JUMPER SETTINGS

High Low High Low High Low High Low COOL Tap ADJ Tap 2005 1433 2404 1579 56.8 40.6 68.1 44.7 A B 1768 1145 2022 1313 50.1 32.4 57.2 37.2 B B 2009 1299 2167 1388 56.9 36.8 61.3 39.3 A A 1615 1040 1801 1159 45.7 29.4 51.0 32.8 B A 1787 1159 1924 1256 50.6 32.8 54.5 35.6 A C 1524 988 1818 1175 43.1 28.0 51.5 33.3 C B 1445 940 1620 1024 40.9 26.6 45.9 29.0 B C 1350 883 1638 1049 38.2 25.0 46.4 29.7 D B 1384 906 1628 1030 39.2 25.6 46.1 29.2 C A 1215 800 1442 929 34.4 22.6 40.8 26.3 D A 1236 810 1434 911 35.0 22.9 40.6 25.8 C C 1086 716 1305 859 30.7 20.3 36.9 24.3 D C

JUMPER SETTINGS

HIGH / LOW SPEED ELECTRIC HEAT AIRFLOW

CFM m³/min

12B 12D 12B 12D

High Low High Low High Low High Low HEAT Tap ADJ Tap 1385 900 1411 913 39.2 25.5 39.9 25.8 A N / A 1228 795 1258 817 34.8 22.5 35.6 23.1 B N / A 1137 748 1159 769 32.2 21.2 32.8 21.8 C N / A

917 603 928 619 26.0 17.1 26.3 17.5 D N / A

16C 20D 16C 20D JUMPER SETTINGS

High Low High Low High Low High Low HEAT Tap ADJ Tap 2006 1411 2408 1515 56.8 39.9 68.2 42.9 A N / A 1868 1243 2218 1285 52.9 35.2 62.8 36.4 B N / A 1468 983 1902 1070 41.6 27.8 53.8 30.3 C N / A 1248 840 1407 823 35.3 23.8 39.8 23.3 D N / A

1. Airflow at nominal voltage, bottom return at 0.5 external static pressure, tested without filter installed, dry coil conditions.

2. These units have variable speed motors that automatically adjust to provide constant CFM from 0.0” to 0.6” w.c. static pressure.

3. From 0.6” to 1.0” static pressure, CFM is reduced by 2% per 0.1” increase in static.

4. Operation on duct systems with greater than 1.0” w.c. external static pressure is not recommended.

5. Both the COOL and the ADJUST tap must be set to obtain the cooling airflow desired (CFM).

6. The ADJ tap does not affect the HEAT tap setting.

7. Low speed cooling used only with two stage outdoor units. (Speed is preset to 65% of high speed).

8. Dehumidification speed is 85% of jumper selected COOL tap and ADJUST tap.

9. When operating in both heat pump and electric heat modes, the airflow (CFM) will be per HEAT Tap CFM values only.

10. At some settings, LOW COOL and/or LOW HEAT airflow may be lower than what is required to operate an airflow switch on certain models of electronic air cleaners. Consult the instructions for the electronic air cleaner for further details.

11. Airflow (CFM) indicator light (LED2) flashes once for every 100 CFM (i.e.: 12 Flashes is 1200 CFM) – blinks are approximate +/- 10% of actual CFM.

JUMPER SETTINGS

Page 16

SECTION X: MAINTENANCE

Thermo Products, LLC 5235 West State Road 10 North Judson, IN 46366 www.thermopride.com

Filters must be cleaned or replaced when they become dirty. Inspect at least once per month. The frequency of cleaning depends upon the hours of operation and the local atmospheric conditions. Clean filters keep unit efficiency high.

SECTION XI: WIRING DIAGRAM

LUBRICATION

The bearings of the blower motor are permanently lubricated.

FIGURE 11: Wiring Diagram