Rheem RH1V3617STANJA, RH1V4824STANJA, RH1V4821STANJA, RH1V6024STANJA, RH2V2421HTACJA Installation Instructions Manual

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Page 1

INSTALLATION INSTRUCTIONS

WARNING

ISO 9001:2008

AIR HANDLERS

FEATURING INDUSTRY STANDARD R-410A REFRIGERANT: (-)H1V Premium Efficiency Single Stage with Aluminum Coil

(-)H2V Premium Efficiency Two Stage Comfort Control

(-)H2V with Aluminum Coil

System™

▲WARNING

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.

92-20521-65-00

Page 2

CONTENTS

1.0 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.0 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Important Information About Efficiency and Indoor Air Quality . . . . . . . . . . . . . . 5

2.2 Model Number Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.4 Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.5 Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.0 APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1 Zoning Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2 Vertical Upflow & Horizontal Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3 Vertical Downflow & Horizontal Right. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.4 Installation in an Unconditioned Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.5 Installation in Mobile/Manufactured Homes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.0 ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Copper Wire Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.3 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 Typical Thermostat Wiring Diagrams (-)H1V, (-)H2V. . . . . . . . . . . . . . . . . . . . . 15

4.5 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.6 Blower Motor Electrical Data (-)H1V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.7 Blower Motor Electrical Data (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.8 Conventional 24VAC Thermostat Control Wiring (-)H2V . . . . . . . . . . . . . . . . . . 19

4.9 Electric Heat Electrical Data (-)H1V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.10 Electric Heat Electrical Data (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.11 Heater Kit Supplemental Information (-)H1V & (-)H2V. . . . . . . . . . . . . . . . . . . . 23

5.0 ECM MOTOR INTERFACE CONTROL BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.1 ECM Motor Interface Control & Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.2 Using the On-board LED to Determine Blower CFM . . . . . . . . . . . . . . . . . . . . . 25

5.3 Cooling Airflow Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.4 Cooling Airflow Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.5 Electric Heat Airflow Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.6 Cooling Delay Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.7 Cooling Mode Dehumidification - Passive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.8 Cooling Mode Dehumidification - Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.9 On Demand Dehumidification Airflow Adjustment - Active . . . . . . . . . . . . . . . . 29

5.10 Airflow Performance (-)H1V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.11 Airflow Performance Data (-)H1V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.0 AIRFLOW PERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.1 Airflow Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.2 Copper Wire Size - Awg. (3% Voltage Drop) . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.3 Blower Motor Electrical Data (-)H2v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.4 Electric Heat Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.5 Cooling Airflow Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.6 Cooling Airflow Adjustment (-)H2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.7 Electric Heat Airflow (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.8 Cooling Mode Dehumidification (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.9 Cooling Delay Profiles (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.10 Using the On-Board LED to determine Blower CFM (-)H2V . . . . . . . . . . . . . . . 36

6.11 Cooling Airflow Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.12 Cooling Airflow Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.13 Airflow Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.14 Electric Heat Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.15 Cooling Mode Dehumidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.16 Cooling Delay Profiles (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

6.17 Airflow Performance Data (-)H2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

6.18 Air Handler Diagnostic Codes (-)H2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.0 DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8.1 TEV Sensing Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8.2 Condensate Drain Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.3 Duct Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.0 AIR FILTER (Not Factory Installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.0 SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.1 Cooling (cooling only & heat pump) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.2 Heating (electric heat only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.3 Heating (heat pump) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.4 Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.5 Emergency Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.6 Room Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

11.0 CALCULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

11.1 Calculating Temperature Rise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

11.2 Calculating BTUH Heating Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

11.3 Calculating Airflow CFM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

11.4 Calculating Correction Factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

12.0 PRE-START CHECKLIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

13.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

13.1 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

13.2 Indoor Coil/Drain Pan/Drain Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

13.3 The Comfort Control2System™ Control Board . . . . . . . . . . . . . . . . . . . . . . . . . 47

13.4 Blower Motor & Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

13.5 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

13.6 Blower Assembly Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 48

13.7 Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

13.8 ECM Control Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

13.9 Blower Wheel Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

14.0 REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

15.0 ACCESSORIES - KITS - PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Page 3

1.0 SAFETY INFORMATION

WARNING

Duct leaks can create an unbalanced system and draw pollutants such as dirt, dust, fumes and odors into the home causing property damage. Fumes and odors from toxic, volatile or flammable chemicals, as well as automobile exhaust and carbon monoxide (CO), can be drawn into the living space through leaking ducts and unbalanced duct systems causing personal injury or death (see Figure 1).

• If air-moving equipment or ductwork is located in garages or off-garage storage areas - all joints, seams, and openings in the equipment and duct must be sealed to limit the migration of toxic fumes and odors including carbon monoxide from migrating into the living space.

• If air-moving equipment or ductwork is located in spaces containing fuel burning appliances such as water heaters or boilers - all joints, seams, and openings in the equipment and duct must also be sealed to prevent depressurization of the space and possible migration of combustion byproducts including carbon monoxide into the living space.

WARNING (SEE SECTION 3.2: VERTICAL UPFLOW & HORIZONTAL LEFT)

If unit is to be installed without an indoor coil, return air duct, or plenum, it must not be in stalled directly over combustible material. If installed without an indoor coil with a return duct or plenum, the air plenum or duct must have a solid sheet metal bottom with no return air openings, registers or flexible air ducts located directly under the unit. Exposing combustible material to the return opening of an upflow unit without an indoor coil can cause a fire resulting in property damage, personal injury or death.

WARNING (SEE SECTION 14.7: ECM CONTROL MODULE REPLACEMENT)

Always have 240 volt power turned off to the furnace before attempting any replacement of the motor or control module. Failure to do so may result in serious equipment damage, personal injury or death.

WARNING (SEE SECTION 4.0: ELECTRICAL WIRING)

Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death.

WARNING (SEE SECTION 4.3: GROUNDING)

The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.

WARNING (SEE SECTION 14.0: MAINTENANCE)

Units with circuit breaker(s) meet requirements as a service disconnect switch, however, if access is required to the line side (covered) of the circuit breaker, this side of the breaker(s) will be energized with the breaker(s) de-energized. Contact with the line side can cause electrical shock resulting in personal injury or death.

WARNING (SEE SECTION 14.5: BLOWER ASSEMBLY REMOVAL & REPLACEMENT)

If removal of the blower assembly is required, all disconnect switches supplying power to the airhandler must be de-energized and locked (if not in sight of unit) so the field power wires can be safely removed from the blower assembly. Failure to do so can cause electrical shock resulting in personal injury or death.

Continued on next page ➜

Page 4

WARNING

PROPOSITION 65: This appliance contains fiberglass insulation. Respirable particles of fiberglass are known to the State of California to cause cancer.

All manufacturer products meet current Federal OSHA Guidelines for safety. California Proposition 65 warnings are required for certain products, which are not covered by the OSHA standards.

California's Proposition 65 requires warnings for products sold in California that contain or produce any of over 600 listed chemicals known to the State of California to cause cancer or birth defects such as fiberglass insulation, lead in brass, and combustion products from natural gas.

All “new equipment” shipped for sale in California will have labels stating that the product contains and/or produces Proposition 65 chemicals. Although we have not changed our processes, having the same label on all our products facilitates manufacturing and shipping. We cannot always know “when, or if” products will be sold in the California market.

You may receive inquiries from customers about chemicals found in, or produced by, some of our heating and air-conditioning equipment, or found in natural gas used with some of our products. Listed below are those chemicals and substances commonly associated with similar equipment in our industry and other manufacturers.

• Glass Wool (Fiberglass) Insulation

• Carbon Monoxide (CO).

• Formaldehyde

• Benzene More details are available at the websites for OSHA (Occupational Safety and

Health Administration), at www.osha.gov (Office of Environmental Health Hazard Assessment), at www.oehha.org Consumer education is important since the chemicals and substances on the list are found in our daily lives. Most consumers are aware that products present safety and health risks, when improperly used, handled and maintained.

and the State of California’s OEHHA

WARNING

The first 36 inches of supply air plenum and ductwork must be constructed of sheet metal as required by NFPA 90B. The supply air plenum or duct must have a solid sheet metal bottom directly under the unit with no openings, registers or flexible air ducts located in it. If flexible supply air ducts are used they may be located only in the vertical walls of a rectangular plenum, a minimum of 6 inches from the solid bottom. Metal plenum or duct may be connected to the combustible floor base, if not, it must be connected to the unit supply duct flanges such that combustible floor or other combustible material is not exposed to the supply air opening from the downflow unit. Exposing combustible (non-metal) material to the supply openings of a downflow unit can cause a fire resulting in property damage, personal injury or death.

WARNING (SEE SECTION 8.0: DUCTWORK)

Do not, under any circumstances, connect return ductwork to any other heat producing device such as fireplace insert, stove, etc. Unauthorized use of such devices may result in fire, carbon monoxide poisoning, explosion, personal injury or property damage.

WARNING

Because of possible damage to equipment or personal injury, installation, service, and maintenance should be performed by trained, qualified service personnel. Consumer service is recommended only for filter cleaning/ replacement. Never operate the unit with the access panels removed.

WARNING (SEE SECTION 3.3: VERTICAL DOWNFLOW & HORIZONTAL RIGHT)

The RXHB-17, RXHB-21, or RXHB-24 combustible floor base is required when certain units are applied downflow on combustible flooring. Failure to use the base can cause a fire resulting in property damage, personal injury or death. See clearances section in this manual for combustible floor base RXHB-.

for units requiring a combustible floor base. See the accessory

CAUTION (SEE SECTION 14.7: ECM CONTROL MODULE REPLACEMENT)

Reversing the 5-pin connector on the ECM motor causes immediate failure of the control module.

Continued on next page ➜

Page 5

CAUTION (SEE SECTION 3.2: VERTICAL UPFLOW & HORIZONTAL LEFT)

Horizontal units must be configured for right hand air supply. Horizontal drain pan must be located under indoor coil. Failure to use the drain pan can result in property damage.

CAUTION (SEE SECTION 14.2: INDOOR COIL - DRAIN PAN - DRAIN LINE)

In compliance with recognized codes, it is recommended that an auxiliary drain pan be installed under all evaporator coils or units containing evaporator coils that are located in any area of a structure where damage to the building or building contents may occur as a result of an overflow of the coil drain pan or a stoppage in the primary condensate drain piping. See accessory section in this manual for secondary horizontal drain pan RXBM-.

NOTICE

When used on cooling applications, excessive sweating may occur when unit is installed in an unconditioned space. This can result in property damage.

NOTICE

Improper installation, or installation not made in accordance with the Underwriters Laboratory (UL) certification or these instructions, can result in unsatisfactory operation and/or dangerous conditions and are not covered by the unit warranty.

NOTICE

In compliance with recognized codes, it is recommended that an auxiliary drain pan be installed under all evaporator coils or units containing evaporator coils that are located in any area of a structure where damage to the building or building contents may occur as a result of an overflow of the coil drain pan or a stoppage in the primary condensate drain piping. See accessories section of these instructions for auxiliary horizontal overflow pan information (model RXBM).

NOTICE

Use of this air-handler during construction is not recommended. If operation during construction is absolutely required, the following temporary installation requirements must be followed:

Installation must comply with all Installation Instructions in this manual including the following items:

• Properly sized power supply and circuit breaker/fuse

• Air-handler operating under thermostatic control;

• Return air duct sealed to the air-handler;

• Air filters must be in place;

• Correct air-flow setting for application

• Removing the coil and storing it in a clean safe place is highly recommended until construction is completed and the outdoor unit is installed.

• Clean air-handler, duct work, and components including coil upon completion of the construction process and verify proper air-handler operating conditions according as stated in this instruction manual.

• NOTE: Electric strip heater elements tend to emit a burning odor for a few days if dust has accumulated during construction. Heater elements are easily damaged. Take great care when cleaning them. Low pressure compressed air is recommended for cleaning elements.

2.0 GENERAL INFORMATION

2.1 IMPORTANT INFORMATION ABOUT EFFICIENCY AND INDOOR

2.1 AIR QUALITY

Central cooling and heating equipment is only as efficient as the duct system that car ries the cooled or heated air. To maintain efficiency, comfort and good indoor air quality, it is important to have the proper balance between the air being supplied to each room and the air returning to the cooling and heating equipment.

Proper balance and sealing of the duct system improves the efficiency of the heating and air conditioning system and improves the indoor air quality of the home by reducing the amount of airborne pollutants that enter homes from spaces where the ductwork and / or equipment is located. The manufacturer and the U.S. Environmental Protection Agency’s Energy Star Program recommend that central duct systems be checked by a qualified contractor for proper balance and sealing.

Page 6

FIGURE 1

MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO LIVING SPACES

2.2 MODEL NUMBER EXPLANATION (SEE FIGURE 2)

FIGURE 2

MODEL NUMBER EXPLANATION

(-) H 1 V 24 17 S T A N A A ***

OPTION CODE

BRAND

PRODUCT CATEGORY

H = AIR HANDLER

STAGES OF AIR FLOW

1 = SINGLE 2 = TWO STAGE

MOTOR TYPE

V = ECM

NOMINAL CAPACITY

24 = 18,000-24,000 BTU/H 36 = 30,000-36,000 BTU/H 48 = 42,000-48,000 BTU/H 60 = 60,000 BTU/H

WIDTH

17 = 17.5” (600-1200 CFM) 24 = 24.5 (1400-1800 CFM) 21 = 21” (800-1600 CFM)

NOTES:

1) J Voltage (230V) single phase air handler is designed to be used with single or three phase 230 volt power. In the case of connecting 3-phase power to the air handler terminal block, bring only two leads to the terminal block. Cap, insulate and fully secure the third lead.

2) The air handlers are shipped from the factory with the proper indoor coil installed, and cannot be ordered without a coil.

3) Electric heat elements are field-installed items.

4) The air handlers do not have an internal filter rack. An external filter rack or other means of filtration is required.

MAJOR SERIES

A = FIRST

METERING DEVICE

T = TEV P = PISTON E = EEV

COIL EFFICIENCY

S = STANDARD H = HIGH M = MEDIUM

VOLTAGE

A = 115/1/60 J = 208/240/1/50 D = 480/3/60 T = 220/240/1/50

CONTROLS

C = COMMUNICATING N = NON-COMMUNICATING

(SEE ADS-3803)

BLANK = NONE

MINOR SERIES

A = FIRST

AVAILABLE MODELS

RH1V2417STANJA RH1V3617STANJA

RH1V3621MTANJA

RH1V4821STANJA

AVAILABLE MODELS

RH2V2421HTACJA RH2V3624HTACJA RH2V4824HTACJA

RH2V6024HTACJA RH1V4824STANJA RH1V6024STANJA

Page 7

2.3 DIMENSIONS & WEIGHTS (SEE FIGURE 3)

FIGURE 3

DIMENSIONS AND WEIGHTS -- SINGLE COIL UNITS

HIGH VOLTAGE CONNECTION 7/8". 1 3/32", 1 31/32" DIA. KNOCK OUTS.

SUPPLY AIR

105/16

ELECTRICAL CONNECTIONS MAY EXIT TOP OR EITHER SIDE

NOTE: 24" CLEARANCE REQUIRED IN FRONT OF UNIT FOR FILTER AND COIL MAINTENANCE.

LOW VOLTAGE CONNECTION 5/8" AND 7/8" KNOCK OUT (OUTSIDE OF CABINET)

AUXILIARY DRAIN CONNECTION 3/4" FEMALE PIPE THREAD (NPT) HORIZONTAL APPLICATION ONLY

PRIMARY DRAIN CONNECTION 3/4" FEMALE PIPE THREAD (NPT)

AUXILIARY DRAIN CONNECTION 3/4" FEMALE PIPE THREAD (NPT) UPFLOW/DOWNFLOW APPLICATION ONLY

LIQUID LINE CONNECTION COPPER (SWEAT)

VAPOR LINE CONNECTION COPPER (SWEAT)

UPFLOW UNIT SHOWN; UNIT MAY BE INSTALLED UPFLOW, DOWNFLOW. HORIZONTAL RIGHT, OR LEFT AIR SUPPLY.

DIMENSIONAL DATA

MODEL

(-)H1V

2417ST3/8" [9.53]

3617ST3/8" [9.53] 3621MT3/8" [9.53] 4821ST3/8" [9.53]

4824ST3/8" [9.53]

6024ST3/8" [9.53]

REFRIGERANT CONNECTIONS

SIZE

MODEL

SIZE

(-)H2V

SWEAT (IN.) [mm] ID

LIQUID

UNIT WIDTH

“W” IN. [mm]

UNIT HEIGHT

“H” IN. [mm]

RETURN AIR OPENING DIMENSIONS

UNIT

WIDTH

“W” IN

VAPOR

/4" [19.05] 171/2" [445] 421/2" [1080] 16" [409] 600 [283] 800 [378] 82/96 [37/44]

/4" [19.05] 171/2" [445] 421/2" [1080] 16" [409] 1000 [472] 1200 [566] 90/104 [41/47]

/8" [22.23] 21" [533] 501/2" [1282] 191/2" [495] 1000 [472] 1200 [566] 126/142 [57/64]

/8" [22.23] 21" [533] 501/2" [1282] 191/2" [495] 1400 [661] 1600 [755] 130/146 [59/66]

/8" [22.23] 241/2" [622] 501/2" [1282] 23" [585] 1600 [755] — 142/160 [64/72]

/8" [22.23] 241/2" [622] 551/2" [1410] 23" [585] — 1800 [850] 162/179 [73/81]

[mm]

SUPPLY

DUCT

“A” IN. [mm]

UNIT

HEIGHT

“H” IN

[mm]

MATCHED

OUTDOOR UNIT

191/2

RETURN AIR

OPENING

2111/16

A-1038-01

Model Return Air Opening Return Air Opening

Cabinet Size Width (Inches) Depth/Length (Inches)

17 15

⁄8 193⁄4 21 193⁄8 193⁄4 24 227⁄8 193⁄4

SUPPLY

DUCT “A” IN.

[mm]

NOMINAL COIL AIRFLOW [L/s]

STAGE 2

ODD*

AIR FLOW

COIL (NOM) [L/s]

LO HI

STAGE

ODD*Normal Normal

UNIT WEIGHT / SHIPPING

WEIGHT (LBS.) [kg]

UNIT WITH

COIL (MAX. kW.)

UNIT WEIGHT / SHIPPING

WEIGHT (LBS.) [kg]

UNIT WITH COIL

(MAX. kW.)

2421HT 21 [533] 421/2 [1080] 191/2 [495] (-)ARL/(-)ASL-024JEC 500 [236] 600 [283] 650 [307] 775 [366] 99/117 [45/51] 3624HT 241/2 [622] 551/2 [1410] 23 [584]

4824HT 241/2 [622] 551/2 [1410] 23 [584]

6024HT 241/2 [622] 551/2 [1410] 23 [584]

(-)ASL-039JEC 725 [342] 825 [389] 975 [460] 1175 [555]

(-)ARL/(-)ASL-0935JEC 825 [389] 950 [448] 1000 [472] 1175 [555]

(-)ASL-048JEC 825 [389] 1000 [472] 1300 [614] 1600 [755] (-)ARL-048JEC 1000 [472] 1200 [566] 1350 [637] 1600 [755] (-)ASL-060JEC 925 [437] 1050 [496] 1325 [625] 1700 [802] (-)ARL-060JEC 1025 [484] 1275 [602] 1400 [661] 1700 [802]

129/146 [59/66]

143/160 [65/72]

159/176 [72/80]

Page 8

▲WARNING

Carbon Monoxide (CO) Poisoning

Can Cause Severe Injury or Death.

Carbon Monoxide from the exhaust of motor vehicles and other fuel burning devices can be drawn into the living space by the operation of the central heating and air conditioning system.

Exhaust from motor vehicles, generators, garden tractors, mowers, portable heaters, charcoal and gas grills, gasoline powered tools, and outdoor camping equipment contains carbon monoxide, a poisonous gas that can kill you. You cannot see it, smell it, or taste it.

• Do NOT operate an automobile or any engine in a garage for more than the few seconds it takes to enter or exist the garage.

• Do NOT operate any fuel-burning device in an enclosed or partly enclosed space, or near building windows, doors or air intakes.

The U.S. Consumer Product Safety Commission (CPSC) and Health Canada recommend the installation of UL or CSA certified Carbon Monoxide Alarm(s) in every home.

In compliance with recognized codes, it is recommended that an auxiliary drain pan be installed under all evaporator coils or units containing evaporator coils that are located in any area of a structure where damage to the building or building contents may occur as a result of an overflow of the coil drain pan or a stoppage in the primary condensate drain piping. See accessories section of these instructions for auxiliary horizontal overflow pan information (model RXBM).

WARNING

NOTICE

2.4 RECEIVING

Immediately upon receipt, all cartons and contents should be inspected for transit damage. Units with damaged cartons should be opened immediately. If damage is found, it should be noted on the delivery papers, and a damage claim filed with the last carrier.

• After unit has been delivered to job site, remove carton taking care not to damage unit.

• Check the unit rating plate for unit size, electric heat, coil, voltage, phase, etc. to be sure equipment matches what is required for the job specification.

• Read the entire instructions before starting the installation.

• Some building codes require extra cabinet insulation and gasketing when unit is installed in attic applications.

• If installed in an unconditioned space, apply caulking around the power wires, control wires, refrigerant tubing and condensate line where they enter the cabinet. Seal the power wires on the inside where they exit conduit opening. Caulking is required to pre-vent air leakage into and condensate from forming inside the unit, control box, and on electrical controls.

• Install the unit in such a way as to allow necessary access to the coil/filter rack and blower/control compartment.

• Install the unit in a level position to ensure proper condensate drainage. Make sure unit is level in both directions within 1/8”.

• Install the unit in accordance with any local code which may apply and the national codes. Latest editions are available from: “National Fire Protection Association, Inc., Batterymarch Park, Quincy, MA 02269.” These publications are:

• ANSI/NFPA No. 70-(Latest Edition) National Electrical Code.

• NFPA90A Installation of Air Conditioning and Ventilating Systems.

• NFPA90B Installation of warm air heating and air conditioning systems.

• The equipment has been evaluated in accordance with the Code of Federal Regulations, Chapter XX, Part 3280.

Page 9

2.5 CLEARANCES

41/8

31/16

13/16

11/8

11/16

13/8

213/16

51/4

53/8

515/16

• All units are designed for “0” inches clearance to combustible material on all cabinet surfaces.

• Units with electric heat require a one inch clearance to combustible material for the first three feet of supply plenum and ductwork.

• Some units require a combustible floor base depending on the heating kW. The following table should be used to determine these requirements.

Model Cabinet Size 17 21 24

Model Designation kW 15 18 20

Additionally, if these units are installed down-flow, a combustible floor base is required. See Accessories for Combustible Floor Base RXHB-XX.

Units with electric heating kW equal to not require a combustible floor base.

• Vertical units require clearance on at least one side of the unit for electrical connections. Horizontal units require clearance on either top or bottom for electrical connections. Refrigerant and condensate drain connections are made on the front of the unit. (See Figure 4.)

• All units require 24 inches maximum access to the front of the unit for service.

• These units may be installed in either ventilated or nonventilated spaces.

FIGURE 4

DIMENSIONS FOR FRONT CONNECT COIL

or less than the values listed in the table do

3.0 APPLICATIONS

3.1 ZONING SYSTEMS

The manufacturer does not currently provide or support zoning. However, zoning systems can be installed with a variable speed air-handler as long as the zoning equipment manufacturers specifications and installation instructions are met and followed.

The preferred zoning method is to use a “bypass” system which is properly installed for maximum efficiency. In these systems, excess air is routed back through the system to be used again – this is opposed to a “dump” system in which excess air is routed to a zone where it is expected that the extra heat or cooling would be least noticed.

If installed as a “bypass” system, the installation must have an optional freeze stat installed to prevent the coil from icing with excess bypass cooling. Also, if the zoning equipment manufacturer provides a limit switch (usually provided by the zoning manufacturer), this limit must be installed in the system to prevent the furnace from overheating.

Page 10

3.2 VERTICAL UPFLOW AND HORIZONTAL LEFT

The air handler unit is factory shipped for vertical upflow and horizontal left application.

• If return air is to be ducted, install duct flush with floor. Use fireproof resilient gasket 1/8 to 1/4 in. thick between duct, unit and floor. Set unit on floor over opening.

• Support along the length of the unit, on all units installed horizontally. Do not support or suspend unit from both ends without support in the center of the cabinet. If unit is to be supported or suspended from corners, run two reinforcing rails length of unit and support or suspend from reinforcing rails.

• Secondary drain pan kits RXBM- are required when the unit is configured for the horizontal left position over a finished ceiling and/or living space. (See Section 16.0: Accessories - Kits - Parts.)

FIGURE 5

VERTICAL DOWNFLOW & HORIZONTAL RIGHT APPLICATIONS

DETAIL A

ENSURE THE RETAIN-

ING CHANNEL IS FULLY

ENGAGED WITH THE

RAILS

COIL RAIL.

RAILS

CAUTION

Horizontal units must be configured for right hand air supply. Horizontal drain pan must be located under indoor coil. Failure to use the drain pan can result in property damage.

3.3 VERTICAL DOWNFLOW AND HORIZONTAL RIGHT

Conversion to Vertical Downflow/Horizontal Right: A vertical upflow unit may be converted to vertical downflow/horizontal right. (See Figure 5.) Remove the door and indoor coil.

IMPORTANT: To comply with certification agencies and the National Electric Code for horizontal right application, the circuit breaker(s) on field-installed electric heater kits must be re-installed per procedure below so that the breaker switch “on” position and marking is up and, “off” position and marking is down.

- To turn breaker(s): Rotate one breaker pair (circuit) at a time starting with the one on the

right. Loosen both lugs on the load side of the breaker. Wires are bundles with wire ties, one bundle going to the right lug and one bundle going to the left lug.

- Using a screwdriver or pencil, lift white plastic tab with hole away from breaker until

breaker releases from mounting opening (see Figure 6).

- With breaker held in hand, rotate breaker so that “on” position is up, “off” position is down

with unit in planned vertical mounting position. Insert right wire bundle into top right breaker lug, ensuring all strands of all wires are inserted fully into lug, and no wire insulation is in lug.

Page 11

FIGURE 6

ROTATING CIRCUIT BREAKER

- Tighten lug as tight as possible while holding circuit breaker. Check wires and make sure each wire is secure and none are loose. Repeat for left wire bundle in left top circuit breaker lug.

- Replace breaker by inserting breaker mounting tab opposite white pull tab in opening, hook mounting tab over edge in opening.

- With screwdriver or pencil, pull white tab with hole away from breaker while setting that side of breaker into opening. When breaker is in place, release tab, locking circuit breaker into location in opening.

- Repeat above operation for remaining breaker(s) (if more than one is provided).

- Replace single point wiring jumper bar, if it is used, on line side of breaker and tighten securely.

- Double check wires and lugs to make sure all are secure and tight. Check to make sure unit wiring to circuit breaker load lugs match that shown on the unit wiring diagram.

DRIP LOOP: When installing the unit in down-flow or horizontal-right positions, make sure that the wires coming from the motor form a proper drip loop. This allows water to cascade off the lowest point of the wiring before it enters the motor head. This may require cutting the wire tie and installing a new wire tie to form this loop.

WARNING

The RXHB-17, RXHB-21, or RXHB-24 combustible floor base is required when certain units are applied downflow on combustible flooring. Failure to use the base can cause a fire resulting in property damage, personal injury or death. See clearances for units requiring a combustible floor base. See the accessory section in this manual for combustible floor base RXHB-.

• Rotate unit into the downflow position, with the coil compartment on top and the blower compartment on bottom.

• The set of coil rails must be moved for vertical down-flow and horizontal right application. Remove the coil rail from the factory configuration (6 screws in all). Fastener clearance holes will need to be drilled in the cabinet sides (proper hole locations are marked with “dimples” for this purpose). Note that the shorter (no notch) coil rail must be mounted on the left-hand side to provide clearance for the drain pan condensate connection boss.

• Reinstall the indoor coil 180° from original position. Ensure the retaining channel is fully engaged with the coil rail. (See Figure 5, Detail A.)

• Secondary drain pan kits RXBM- are required when the unit is configured for the horizontal right position over a finished ceiling and/or living space. (See Section 16.0: Accessories - Kits - Parts.)

IMPORTANT: Units cannot be installed horizontally laying on or suspended from the back of the unit.

Page 12

FIGURE 7

INDOOR COIL AND DRAIN PAN SET-UP

STRAPS

HORIZONTAL ADAPTER

VAPOR LINE

CONNECTION

AUXILIARY

HORIZONTAL

DRAIN

CONNECTION

PRIMARY

DRAIN

CONNECTION

UPFLOW/DOWNFLOW

DRAIN CONNECTION

KIT

AUXILIARY

LIQUID LINE CONNECTION

TOP AIR STOP

VERTICAL DRAIN PAN

ST-A1213-01

3.4 INSTALLATION IN AN UNCONDITIONED SPACE

The exterior cabinet of an air handler has a greater risk of sweating when installed in an unconditioned space than when it is installed in the conditioned space. This is primarily due to the temperature of the conditioned air moving through the air handler and the air circulating around the unit where it is installed. For this reason, we recommend the following for all air handler applications, but special attention should be paid to those installed in unconditioned spaces:

• Duct sizing and airflow are critical and based on the equipment selected

• Supply and return duct attachment: If other than the factory flanges are used, the attachment of ducting must be insulated and tight to prevent sweating.

• No perimeter supply flanges are provided. If a full perimeter supply duct is used, it is the responsibility of the installer to provide duct flanges as needed, to secure and seal the supply duct to prevent air leakage and the sweating that will result.

• All wire penetrations should be sealed. Take care not to damage, remove or compress insulation in those cases.

• In some cases, the entire air handler can be wrapped with insulation. This can be done as long as the unit is completely enclosed in insulation, sealed and service access is provided to prevent accumulation of moisture inside the insulation.

• As required, use a secondary pan that will protect the structure from excessive sweating or a restricted coil drain line.

• If a heater kit is installed, be sure the breaker or disconnect cover is sealed tightly to the door panel.

3.5 INSTALLATION IN MOBILE/MANUFACTURED HOMES

1. Air handler must be secured to the structure using “L” brackets or pipe strap.

2. Allow a minimum of 24 inches (610 mm) front clearance required to access doors.

3. Recommended method for securing air handler:

A. If air handler is against the wall, secure top of air handler to wall stud using two

16ga thick angle brackets one on each side. Attach brackets with No. 10 self-tap-

⁄2 long screws to air handler and use 5⁄16 lag screws 11⁄2 long to wall stud.

ping Secure bottom of unit with two 16ga “L” brackets with No. 10 self-tapping screws to air handler and use

⁄16 lag screws 11⁄2 long to floor.

⁄2 long

Page 13

B. If air handler is away from wall attach pipe strap to top of air handler using No. 10

⁄2 long self-tapping screws on both sides. Angle strap down and away from back of air handler, remove all slack, and fasten to wall stud of structure using screws 1 self-tapping screws to air handler and use

FIGURE 8

⁄2 long. Secure bottom of unit with two 16ga “L” brackets with No. 10

⁄16 lag screws 11⁄2 long to floor.

⁄16 lag

ST-A-1193-01

4.0 ELECTRICAL WIRING

Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any applicable local ordinance.

WARNING

Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death.

4.1 POWER WIRING

It is important that proper electrical power is available for connection to the unit model being installed. See the unit nameplate, wiring diagram and electrical data in the installation instructions.

• If required, install a branch circuit disconnect of adequate size, located within sight of, and readily accessible to the unit.

• IMPORTANT: After the Electric Heater is installed, units may be equipped with one, two, or three 60 amp. circuit breakers. These breaker(s) protect the internal wiring in the event of a short circuit and serve as a disconnect. Circuit breakers installed within the unit do not provide over-current protection of the supply wiring and therefore may be sized larger than the branch circuit protection.

• Supply circuit power wiring must be 75°C minimum copper conductors only. See Electrical Data in this section for ampacity, wire size and circuit protector requirement. Supply circuit protective devices may be either fuses or “HACR” type circuit breakers.

• Power wiring may be connected to either the right, left side or top. Three

/32” dia. concentric knockouts are provided for connection of power wiring to unit.

• Power wiring is connected to the power terminal block(s) in unit control compartment.

/8”, 13/32”,

Page 14

4.2 COPPER WIRE SIZE - AWG. (3% VOLTAGE DROP)

L U P P L Y

I R E

200 [61]

150 [46]

100 [30]

50 [15]

T H

F E E T

12 12 14 14 15

10 10 12 12 20

10 10 10 25

NOTE: WIRE BASED ON COPPER CONDUCTORS 75°C MINIMUM RATING.

FOR MORE THAN 3 CONDUCTORS IN A RACEWAY OR CABLE, SEE N.E.C. FOR DERATING THE AMPACITY OF EACH CONDUCTOR.

SUPPLY CIRCUIT AMPACITY

4.3 CONTROL WIRING

IMPORTANT: Class 2 low voltage control wire should not be run in conduit with power wiring and must be separated from power wiring, unless Class 1 wire of proper voltage rating is used.

• Low voltage control wiring should be 18 AWG color-coded (105°C minimum). For lengths longer than 100 ft., 16 AWG wire should be used.

• Low voltage control connections are made by extending wires from top of air handler using wire nuts.

• See wiring diagrams attached to indoor and outdoor sections to be connected

• Do not leave excess field control wiring inside unit, pull excess control wire to outside of unit and provide strain relief for field control wiring on inside of cabinet at point wiring penetrates cabinet.

• Make sure, after installation, separation of control wiring and power wiring has been maintained.

100

2 2

110

1 1 1

125

0 0 0

150

00 00 00 00

175

FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS

SOLID COPPER WIRE - AWG.

3.0

2.5

2.0

Thermostat Load - Amps

(1) Wire length equals twice the run distance. NOTE: Do not use control wiring smaller than No. 18 AWG between thermostat and outdoor unit.

16 16 18

14 14 16

100

12 12 14

150

200

Length of Run - Feet (1)

10 12 12

10 10 12

250

300

10 10 10

Page 15

ODD

Air Handler

Single-Stage A/C The rmos tat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATIO N

Factory Standard

W/BL

G/BK

W/BK

G/Y

Y/BL

ODD

Air Handler

Single-Stage A/C The rmostat

A/C Outdoor Unit

Humidistat

Field Installed

Line Voltage

WIRING INFORMATIO N

Factory Standard

W/BL

G/BK

W/BK

G/Y

Y/BL

ODD

Air Handler

Two-Stage A/C Thermostat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

W/BL

G/BK

W/BK

G/Y

Y/BL

ODD

Air Handler

Heat Pump Thermostat

Heat Pump Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

W/BL

G/BK

W/BK

G/Y

Y/BL

ODD

Air Handler

Heat Pump Thermostat

Heat Pump Outdoor Unit

Humidistat

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

W/BL

G/BK

W/BK

G/Y

Y/BL

ODD

Air Handler

Two-Stage Heat Pump Thermostat

Heat Pump Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

W/BL

G/BK

W/BK

G/Y

Y/BL

4.4 Typical Thermostat Wiring Diagrams (-)H1V

NOTE: These low voltage application diagrams are generic. Your indoor/ outdoor units may not have all the characteristics shown or may not wire exactly as shown. Refer to the diagrams and information sent with your indoor/outdoor sections.

BK – BLACK G – GREEN PR – PURPLE Y – YELLOW BR – BROWN GY – GRAY R – RED BL – BLUE O – ORANGE W – WHITE

WIRE COLOR CODE

FIGURE 9

TYPICAL THERMOSTAT: STRAIGHT COOLING WITH ELECTRIC HEAT

FIGURE 11

TYPICAL THERMOSTAT: STRAIGHT COOLING WITH ELECTRIC HEAT USING A TWO-STAGE FOR DEHUMIDIFYING THERMOSTAT

FIGURE 10

TYPICAL THERMOSTAT: STRAIGHT COOLING WITH ELECTRIC HEAT AND USING A HUMIDISTAT FOR DEHUMIDIFICATION

FIGURE 12

TYPICAL THERMOSTAT: HEAT PUMP WITH ELECTRIC HEAT

*When using 13kW and higher, it is recommitted to jump W1 and W2 together for maximum temperature rise.

FIGURE 13

TYPICAL THERMOSTAT: HEAT PUMP WITH ELECTRIC HEAT AND USING A HUMIDISTAT FOR DEHUMIDIFICATION

*When using 13kW and higher, it is recommitted to jump W1 and W2 together for maximum temperature rise.

FIGURE 14

TYPICAL THERMOSTAT: HEAT PUMP WITH ELECTRIC HEAT USING A TWO-STAGE THERMOSTAT FOR DEHUMIDIFICATION

*When using 13kW and higher, it is recommitted to jump W1 and W2 together for maximum temperature rise.

Page 16

Typical Two-Stage Thermostat

(-)ARL/(-)ASL Condensing

Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

Y/BL

W/R

Typical Two-Stage Thermostat

(-)ARL/(-)ASL

Condensing

Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

Y/BL

W/R

Humidistat

Typical Two-Stage Thermostat

(-)ARL/(-)ASL Condensing

Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

Y/BL

W/R

DHM

Typical Two-Stage Thermostat

(-)ARL/(-)ASL Condensing

Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

Y/BL

W/R

DHM

4.4 Typical Thermostat Wiring Diagrams (-)H2V

BK – BLACK G – GREEN PR – PURPLE Y – YELLOW

WIRE COLOR CODE

BR – BROWN GY – GRAY R – RED BL – BLUE O – ORANGE W – WHITE

FIGURE 15

TYPICAL 2-STAGE THERMOSTAT: 2-STAGE CONDENSING UNIT WITH ELECTRIC HEAT

*When using 13Kw and higher, it is recommitted to jump

W1 and W2 together for maximum temperature rise.

DIP SWITCH POSITIONS

OFF

FIGURE 16

TYPICAL TWO-STAGE THERMOSTAT: 2-STAGE CONDENSING UNIT WITH ELECTRIC HEAT USING A HUMIDISTAT FOR DEHUMIDIFICATION*.

*When using 13Kw and higher, it is recommitted to jump

W1 and W2 together for maximum temperature rise.

*See Section 5.15 for proper DIP switch selection.

DIP SWITCH POSITIONS

OFF

FIGURE 17

TYPICAL TWO-STAGE THERMOSTAT: 2-STAGE CONDENSING UNIT WITH ELECTRIC HEAT USING A TWO-STAGE THERMOSTAT WITH DEHUMIDIFICATION*

DIP SWITCH POSITIONS

OFF

*When using 13Kw and higher, it is recommitted to jump

W1 and W2 together for maximum temperature rise.

*See Section 5.15 for proper DIP switch selection.

FIGURE 18

2-STAGE CONDENSING UNIT WITH ELECTRIC HEAT USING A TWOSTAGE THERMOSTAT WITH DEHUMIDIFICATION* AND A MALFUNCTION LIGHT

*When using 13Kw and higher, it is recommitted to jump

W1 and W2 together for maximum temperature rise.

*See Section 5.15 for proper DIP switch selection.

DIP SWITCH POSITIONS

OFF

Page 17

Single-Stage A/C Thermostat

-Field Installed

Line Voltage

WIRING INFORMATION

-Factory Standard

ODD

W/BL

G/BK

W/BK

G/Y

Y/BL

Single-Stage A/C Thermostat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

W/BL

Humidistat

G/BK

W/BK

G/Y

Y/BL

Single-Stage A/C Thermostat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

W/BL

G/BK

W/BK

G/Y

Y/BL

Single-Stage A/C Thermostat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

W/BL

Humidistat

G/BK

W/BK

G/Y

Y/BL

4.4 Typical Thermostat Wiring Diagrams (-)H2V - continued

WIRE COLOR CODE

BK – BLACK G – GREEN PR – PURPLE Y – YELLOW BR – BROWN GY – GRAY R – RED BL – BLUE O – ORANGE W – WHITE

FIGURE 19

TYPICAL SINGLE-STAGE THERMOSTAT: SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT 1STSTAGE AIR FLOW

FIGURE 20

TYPICAL SINGLE-STAGE THERMOSTAT: SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT AND USING A HUMIDISTAT FOR DEHUMIDIFICATION 1STSTAGE AIR FLOW

FIGURE 21

TYPICAL SINGLE-STAGE THERMOSTAT: SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT 2ND STAGE AIR FLOW

FIGURE 22

SINGLE STAGE STRAIGHT COOLING WITH ELECTRIC HEAT AND USING A HUMIDISTAT FOR DEHUMIDIFICATION 2ND STAGE AIR FLOW

Page 18

4.5 GROUNDING

WARNING

The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.

• Grounding may be accomplished by grounding metal conduit when installed in accordance with electrical codes to the unit cabinet.

• Grounding may also be accomplished by attaching ground wire(s) to ground lug(s) provided in the unit wiring compartment.

• Ground lug(s) are located close to wire entrance on left side of unit (upflow). Lug(s) may be moved to marked locations near wire entrance on right side of unit (upflow), if alternate location is more convenient.

• Use of multiple supply circuits require grounding of each circuit to lug(s) provided in unit.

4.6 BLOWER MOTOR ELECTRICAL DATA (-)H1V

MODEL

SIZE

(-)H1V

2417ST 208/240 1 60 1/3 300-1100 2 2.2 3 15

3617ST 208/240 1 60 1/2 300-1100 2 3.1 4.0 15

3621MT/4821ST 208/240 1 60 3/4 300-1100 2 4.0 5.0 15

6024ST 208/240 1 60 3/4 300-1100 2 4.4 6 15

VOLTAGE

SPEEDSRPMHPHERTZPHASE

CIRCUIT

AMPS

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTOR

4.7 BLOWER MOTOR ELECTRICAL DATA (-)H2V

(-)H2V HP Voltage Phase Hertz RPM

2421HT 1/3 208/230 1 60 300-1100 1.7 4.0 15 3624HT 3/4 208/230 1 60 300-1100 4.9 9.0 15 4824HT 3/4 208/230 1 60 300-1100 4.9 9.0 15 6024HT 3/4 208/230 1 60 300-1100 4.9 9.0 15

Circuit

AMPS

Minimum

Circuit

Ampacity

Max. Circuit

Protector

Page 19

4.8 CONVENTIONAL 24VAC THERMOSTAT CONTROL WIRING (-)H2V

The (-)ARL/(-)ASL-series of condensing units allow the installer to use conventional 24VAC control wiring and a conventional thermostat for proper unit operation.

IMPORTANT: The preferred method of unit installation and operation is by the Comfort

Control

tic information is not available when the (-)ARL/(-)ASL unit is using a conventional thermostat. Reference section 7.1 Comfort Control

Thermostat control wiring requires a minimum of seven (7) wires for proper unit operation:

Optional wiring:

NOTE: W1 and W2 may be jumpered together to energize all the electric heat when a call for electric heat is received if warmer supply air is desired.

NOTE: When using 24VAC thermostat control wiring, the serial communicating control will ignore any inputs to Data wire 1 and Data wire 2.

IMPORTANT: Class 2 low voltage control wire should not be run in conduit with power wiring and must be separated from power wiring, unless Class 1 wire of proper voltage rating is used.

Low voltage control wiring should be 18 AWG color-coded (105°C minimum). For lengths longer than 100 ft., 16 AWG wire should be used.

Low voltage control connections are made by extending wires from top of air handler using wire nuts.

See wiring diagrams attached to indoor and outdoor sections to be connected Do not leave excess field control wiring inside unit, pull excess control wire to outside of

unit and provide strain relief for field wiring on inside of cabinet where wiring penetrates cabinet.

Make sure, after installation, separation of control wiring and power wiring has been maintained.

System™, which allows access to the fault history of the system. This diagnos-

System™ Control Wiring.

R – 24VAC C – 24VAC common G – Constant Fan W1 – First stage electric heat W2 – Second stage electric heat Y1 – First stage operation Y2 – Second stage operation

ODD – On demand humidification

Page 20

4.9 ELECTRIC HEAT ELECTRICAL DATA (-)H1V

Installation of the UL Listed original equipment manufacturer provided heater kits listed in the following table is recommended for all auxiliary heating requirements.

HIGH KW ELECTRIC HEAT ELECTRICAL DATA: (-)H1V

AIR-HANDLER

MODEL

(-)H1V

2417ST 9.4/12.5 1/60 3-4.17 SINGLE 45.1/52.1 2.2 60/68 60/70

3617ST 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 3.1 69/79 70/80

3621MT 4821ST 7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0.0 44/50 45/50

HEATER

MODEL

NO.

RXBH-1724?03J 2.25/3.0 1/60 1-3.0 SINGLE 10.8/12.5 2.2 17/19 20/20 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 2.2 25/28 25/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 2.2 36/41 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 2.2 46/53 50/60

RXBH-1724A13J 3.1/4.2 1/60 1-4.17 MULTIPLE CKT 1 15.0/17.4 2.2 22/25 25/25

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 2.2 22/25 25/25 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 2.2 28/32 30/35 RXBH-1724A13C 9.4/12.5 3/60 3-4.17 SINGLE 26.1/30.1 2.2 36/41 40/45

RXBH-1724?03J 2.25/3.0 1/60 1-3.0 SINGLE 10.8/12.5 3.1 18/20 20/20 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 3.1 26/29 30/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 3.1 37/42 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 3.1 48/54 50/60

RXBH-1724A13J 3.1/4.2 1/60 1-4.17 MULTIPLE CKT 1 15.0/17.4 3.1 23/26 25/30

RXBH-1724A15J 3.6/4.8 1/60 1-4.8 MULTIPLE CKT 1 17.3/20.0 3.1 26/29 30/30

RXBH-1724A18J 4.3/5.7 1/60 1-5.68 MULTIPLE CKT 1 20.5/23.6 3.1 30/34 30/35

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 3.1 23/26 25/30 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 3.1 29/33 30/35 RXBH-1724A13C 9.4/12.5 3/60 3-4.17 SINGLE 26.1/30.1 3.1 37/42 40/45 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 3.1 42/48 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-5.68 SINGLE 35.5/41.0 3.1 49/56 50/60

RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 4.0 27/30 30/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 4.0 38/43 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 4.0 49/55 50/60

RXBH-1724A15J 3.6/4.8 1/60 1-4.8 MULTIPLE CKT 1 17.3/20.0 4.0 27/30 30/30

RXBH-1724A18J 6.4/8.5 1/60 2-4.26 MULTIPLE CKT 1 30.8/35.4 4.0 44/50 45/50

RXBH-24A20J

(31⁄2, 4-ton only)

RXBH-24A25J 6.0/8.0 1/60 2-4.0 MULTIPLE CKT 1 28.8/33.3 4.0 42/47 45/50

(4-ton only) 6.0/8.0 1/60 2-4.0 MULTIPLE CKT 2 28.8/33.3 0.0 36/42 40/45

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 4.0 24/27 25/30 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 4.0 30/34 30/35 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 4.0 43/49 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-2.84 SINGLE 35.6/41.0 4.0 50/57 50/60

RXBH-24A20C* (31⁄2, 4-ton only)

RXBH-24A25C*

(4-ton only)

HEATER

208/240V

6.3/8.3 1/60 2-4.17 MULTIPLE CKT 2 30.1/34.7 0 38/44 40/45

9.4/12.5 1/60 3-4.17 SINGLE 45.1/52.1 3.1 61/69 70/70

6.3/8.3 1/60 2-4.17 MULTIPLE CKT 2 30.1/34.7 0 38/44 40/45

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0 44/50 45/50

12.8/17.0 1/60 3-5.68 SINGLE 61.6/70.8 3.1 81/93 90/100

8.5/11.3 1/60 2-5.68 MULTIPLE CKT 2 41.1/47.2 0 52/59 60/60

10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 4.0 70/80 70/80

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0.0 44/50 45/50

12.8/17.0 1/60 4-4.26 SINGLE 61.6/70.8 4.0 82/94 90/100

6.4/8.5 1/60 2-4.26 MULTIPLE CKT 2 30.8/35.4 0.0 39/45 40/45

14.4/19.2 1/60 4-48 SINGLE 69.2/80 4.0 92/105 100/110

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 4.0 49/55 50/60

18.0/24.0 1/60 6-4.0 SINGLE 86.4/99.9 4.0 113/130 125/150

6.0/8.0 1/60 2-4.0 MULTIPLE CKT 3 28.8/33.3 0.0 36/42 40/45

14.4/19.2 3/60 3-3.2 SINGLE 40.0/46.2 4.0 55/63 60/70

7.2/9.6 3/60 3-3.2 MULTIPLE CKT 1 20.0/23.1 4.0 30/34 30/35

7.2/9.6 3/60 3-3.2 MULTIPLE CKT 2 20.0/23.1 0.0 25/29 25/30

18.0/24.0 3/60 6-4.0 SINGLE 50.0/57.8 4.0 68/78 70/80

9.0/12.0 3/60 3-4.0 MULTIPLE CKT 1 25.0/28.9 4.0 37/42 40/45

9.0/12.0 3/60 3-4.0 MULTIPLE CKT 2 25.0/28.9 0.0 32/37 35/40

PH/HZ

NO.

ELEMENTS

- KW PER

TYPE SUPPLY

CIRCUIT

SINGLE CIRCUIT

MULTIPLE CIRCUIT

CIRCUIT

AMPS.

MOTOR

AMPACITY

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTION

Page 21

4.9 ELECTRIC HEAT ELECTRICAL DATA: (-)H1V - continued

AIR-HANDLER

MODEL

(-)H1V

4824ST 6.0/8.0 1/60 2-4.0 MULTIPLE CKT 3 28.8/33.3 0 36/42 40/45 6024ST RXBH-24A30J 21.6/28.8 1/60 6-4.8 SINGLE 103.8/120. 4.4 136/156 150/175

HEATER

MODEL

NO.

RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 4.4 28/31 30/35 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 4.4 38/43 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 4.4 49/56 50/60 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 4.4 71/81 80/90

RXBH-1724A15J RXBH-1724A18J 12.8/17 1/60 4-4.26 SINGLE 61.6/70.8 4.4 83/94 90/100 RXBH-1724A18J

RXBH-24A20J 14.4/19.2 1/60 4-4.8 SINGLE 69.2/80 4.4 93/106 100/110 RXBH-24A20J RXBH-24A25J 18.0/24.0 1/60 6-4.0 SINGLE 86.4/99.9 4.4 114/131 125/150

RXBH-24A25J 6.0/8.0 1/60 2-4.0 MULTIPLE CKT 2 28.8/33.3 0 36/42 40/45

(1800 CFM only)

RXBH-24A30J

(5-ton only) 7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0 44/50 45/50

(1800 CFM only)

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 4.4 25/28 25/30 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 4.4 31/35 35/35 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 4.4 43/49 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-2.84 SINGLE 35.6/41.0 4.4 50/57 50/60

RXBH-24A20C* 7.2/9.6 3/60 3-3.2 MULTIPLE CKT 1 20.0/23.1 4.4 31/35 35/35

RXBH-24A25C* 18.0/24.0 3/60 6-4.0 SINGLE 50.0/57.8 4.4 68/78 70/80

RXBH-24A25C

RXBH-24A30C*

(1800 CFM only)

RXBH-24A30C

(5-ton only)

(1800 CFM only)

HEATER

208/240V

3.6/4.8 1/60 1-4.8 MULTIPLE CKT1 17.3/20.0 4.4 28/31 30/35

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0 44/50 45/50

6.4/8.5 1/60 2-4.26 MULTIPLE CKT 1 30.8/35.4 4.4 44/50 45/50

6.4/8.5 1/60 2-4.26 MULTIPLE CKT 2 30.8/35.4 0 39/45 40/45

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 4.4 49/56 50/60

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0 44/50 45/50

6.0/8.0 1/60 2-4.0 MULTIPLE CKT 1 28.8/33.3 4.4 42/48 45/50

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 4.4 49/56 50/60

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 3 34.6/40.0 0 44/50 45/50

14.4/19.2 3/60 3-3.2 SINGLE 40.0/46.2 4.4 56/64 60/70

7.2/9.6 3/60 3-3.2 MULTIPLE CKT 2 20.0/23.1 0 25/29 25/30

9.0/12.0 3/60 3-4.0 MULTIPLE CKT 1 25.0/28.9 4.4 37/42 40/45

9.0/12.0 3/60 3-4.0 MULTIPLE CKT 2 25.0/28.9 0 32/37 35/40

21.6/28.8 3/60 6-4.8 SINGLE 60.0/69.4 4.4 81/93 90/100

10.8/14.4 3/60 3-4.8 MULTIPLE CKT 1 30.0/34.7 4.4 43/50 45/50

10.8/14.4 3/60 3-4.8 MULTIPLE CKT 2 30.0/34.7 0 38/44 40/45

PH/HZ

NO.

ELEMENTS

- KW PER

TYPE SUPPLY

CIRCUIT

SINGLE CIRCUIT

MULTIPLE CIRCUIT

CIRCUIT

AMPS.

MOTOR

AMPACITY

MINIMUM

CIRCUIT

AMPACITY

PROTECTION

MAXIMUM

CIRCUIT

NOTES:

* Values only. No single point kit available.

• Electric heater BTUH - (heater watts + motor watts) x 3.414 (see airflow table for motor watts.)

• Supply circuit protective devices may be fuses or “HACR” type circuit breakers.

• Largest motor load is included in single circuit and multiple circuit 1.

• If non-standard fuse size is specified, use next size larger fuse size.

• J Voltage (230V) single phase air handler is designed to be used with single or three phase 230 volt electric heaters. In the case of connecting 3-phase power to the air handler terminal block without the heater, bring only two leads to the terminal block. Cap, insulate and fully secure the third lead.

• If the kit is listed under both single and multiple circuits, the kit is shipped from factory as multiple circuits. For single phase application, Jumper bar kit RXBJ-A21 and RXBJ-A31 can be used to convert multiple circuits to a single supply circuit. Refer to Accessory Section for details.

• The airflow for continuous fan is set 50% of the cooling airflow.

• ?Heater kits connection type. A=Breaker B=Terminal Block C=Disconnect Pull Out

Page 22

4.10 ELECTRIC HEAT ELECTRICAL DATA (-)H2V

Installation of the UL Listed original equipment manufacturer provided heater kits listed in the table below is recommended for all auxiliary heating requirements.

Model Size

(-)H2V

2421HT RXBH-1724?07J Single 208/240 1/60 5.4/7.2 26.0/30.0 1.7 35/40 35/40

3624HT RXBH-1724A15J MULTI. CKT 1 208/240 1/60 3.6/4.8 17.3/20.0 4.9 30/35 28/32

4824HT RXBH-1724A18J MULTI. CKT 1 208/240 1/60 6.4/8.5 30.8/35.4 4.9 45/60 45/51

6024HT RXBH-24A20J MULTI. CKT 1 208/240 1/60 7.2/9.6 34.6/40.0 4.9 50/60 50/57

Manufacturer

Model Number

RXBH-1724?05J Single 208/240 1/60 3.6/4.8 17.3/20.0 1.7 25/30 24/28

RXBH-1724?10J Single 208/240 1/60 7.2/9.6 34.6/40.0 1.7 50/60 46/53 RXBH-1724?05J Single 208/240 1/60 3.6/4.8 17.3/20.0 4.9 30/35 28/32 RXBH-1724?07J Single 208/240 1/60 5.4/7.2 26.0/30.0 4.9 40/45 39/44 RXBH-1724?10J Single 208/240 1/60 7.2/9.6 34.6/40.0 4.9 50/60 50/57

RXBH-1724A18J MULTI. CKT 1 208/240 1/60 6.4/8.5 30.8/35.4 4.9 45/60 45/51

RXBH-1724?05J Single 208/240 1/60 3.6/4.8 17.3/20.0 4.9 30/35 28/32 RXBH-1724?07J Single 208/240 1/60 5.4/7.2 26.0/30.0 4.9 40/45 39/44 RXBH-1724?10J Single 208/240 1/60 7.2/9.6 34.6/40.0 4.9 50/60 50/57

RXBH-1724A15J MULTI. CKT 1 208/240 1/60 3.6/4.8 17.3/20.0 4.9 30/35 28/32

RXBH-24A20J MULTI. CKT 1 208/240 1/60 7.2/9.6 34.6/40.0 4.9 50/60 50/57

RXBH-24A25J MULTI. CKT 1 208/240 1/60 6.0/8.0 29.0/33.3 4.9 45/50 43/48

(4-ton only) MULTI. CKT 2 208/240 1/60 6.0/8.0 29.0/33.3 0 40/45 37/42

RXBH-1724?07J Single 208/240 1/60 5.4/7.3 26.0/30.0 4.9 40/45 39/44 RXBH-1724?10J Single 208/240 1/60 5.4/7.2 26.0/30.0 4.9 40/45 39/44

RXBH-1724A15J MULTI. CKT 1 208/240 1/60 3.6/4.8 17.3/20.0 4.9 30/35 28/32

RXBH-1724A18J MULTI. CKT 1 208/240 1/60 6.4/8.5 30.8/35.4 4.9 45/60 45/51

RXBH-24A25J MULTI. CKT 2 208/240 1/60 6.0/8.0 29.0/33.3 0 40/45 37/42

RXBH-24A30J Single 208/240 1/60 21.6/28.8 103.8/120.0 4.9 136/156 150/175

RXBH-24A30J MULTI. CKT 2 208/240 1/60 2-4.8 34.6/40.0 0 44/50 45/50

Type Supply

Circuit

Single 208/240 1/60 10.8/14.4 51.9/60.0 4.9 80/90 72/82

MULTI. CKT 2 208/240 1/60 7.2/9.6 34.6/40.0 0 45/50 44/50

Single 208/240 1/60 12.8/17 61.6/70.8 4.9 90/100 84/95

MULTI. CKT 2 208/240 1/60 6.4/8.5 30.8/35.4 0 40/45 39/45

Single 208/240 1/60 10.8/14.4 51.9/60.0 4.9 80/90 72/82

MULTI. CKT 2 208/240 1/60 7.2/9.6 34.6/40.0 0 45/50 44/50

Single 208/240 1/60 12.8/17 61.6/70.8 4.9 90/100 84/95

MULTI. CKT 2 208/240 1/60 6.4/8.5 30.8/35.4 0 40/45 39/45

Single 208/240 1/60 14.4/19.2 69.2/80.0 4.9 100/110 93/107

MULTI. CKT 2 208/240 1/60 7.2/9.6 34.6/40.0 0 45/50 44/50

Single 208/240 1/60 18.0/24.0 87.0/99.9 4.9 125/150 115/132

MULTI. CKT 3 208/240 1/60 6.0/8.0 29.0/33.3 0 40/45 37/42

Single 208/240 1/60 10.8/14.4 51.9/60.0 4.9 80/90 72/82

MULTI. CKT 2 208/240 1/60 7.2/9.6 34.6/40.0 0 45/50 44/50

Single 208/240 1/60 12.8/17 61.6/70.8 4.9 90/100 84/95

MULTI. CKT 2 208/240 1/60 6.4/8.5 30.8/35.4 0 40/45 39/45

Single 208/240 1/60 14.4/19.2 69.2/80.0 4.9 100/110 93/107

MULTI. CKT 2 208/240 1/60 7.2/9.6 34.6/40.0 0 45/50 44/50

Single 208/240 1/60 18.0/24.0 87.0/99.9 4.9 125/150 115/132

MULTI. CKT 1 208/240 1/60 6.0/8.0 29.0/33.3 4.9 45/50 43/48

MULTI. CKT 3 208/240 1/60 6.0/8.0 29.0/33.3 0 40/45 37/42

MULTI. CKT 1 208/240 1/60 7.2/9.6 34.6/40.0 4.9 49/56 50/60

MULTI. CKT 3 208/240 1/60 7.2/9.6 34.6/40.0 0 44/50 45/50

Voltage PH/HZ

HeaterkWHeater

AMPS

Motor

Ampacity

Maximum

Circuit

Protection

Minimum

Circuit

Ampacity

NOTES:

• Supply circuit protective devices may be fuses or “HACR” type circuit breakers.

• Largest motor load is included in single circuit and multiple circuit 1.

• If non-standard fuse size is specified, use next size larger fuse size.

• J Voltage (230V) signal phase air handler is designed to be used with single or three phase 230 volt electric heaters. In the case of connecting 3-phase power to the air handler terminal block without the heater, bring only two leads to the terminal block. Cap, insulate and fully secure the third lead.

• ?Heater Kit Connection Type A=Breaker B=Terminal Block C=Pullout Disconnect

Page 23

4.11 HEATER KIT SUPPLEMENTAL INFORMATION (-)H1V & (-)H2V

AIR CONDITIONING DIVISION

(-)HLA-HM4821JA

MARK HEATER INSTALLED/ L’APPAREIL DE CHAUFFAGE DE MARQUE A INSTALLE

If a heater kit is listed both Single and Multicircuit, the kit is shipped as a Multicircuit and will require a single

Only listed kits can be applied

point kit

Contractor should “mark or check” the left column for the kit installed

These are the required maximum and minimum circuit breaker sizes for overcurrent protection and should not be confused with the size of the breakers installed in the heater kit.

Heater Kit Supplemental Information: What allows the manufacturer to use standard Circuit Breakers

up to 60 amps inside the air handler, when using an approved Heater Kit? National Electric Code (Section 424-22b) and our UL requirements allow us to subdivide heating element

circuits, of less than 48 amps, using breakers of not more than 60 amps and, additionally by, NEC 424-3b, a rating not less than 125 percent of the load and NEC 424-22c, which describes the supplementary overcurrent protection required to be factory-installed within, or on the heater. The breakers in the heater kit are not, and have never been, by NEC, intended to protect power wiring leading to the air handler unit. The breakers in the heating kit are for short circuit protection. All internal unit wiring, where the breakers apply, has been UL approved for short circuit protection.

Ampacity, (not breaker size), determines supply circuit wire size. The ampacity listed on the unit rating plate and the Maximum and Minimum circuit breaker size (noted above) or in the units specification sheet or installation instructions provides the information to properly select wire and circuit breaker/protector size. The National Electric Code (NEC) specifies that the supply or branch circuit must be protected at the source.

Page 24

5.0 AIR HANDLER EQUIPPED WITH ECM MOTOR INTERFACE CONTROL BOARD (-)H1V

IMPORTANT: Factory switch settings are all “OFF” except switch 9, which is “ON”.

5.1 ECM MOTOR INTERFACE CONTROL AND SETTINGS

IMPORTANT: Disconnect power to air handler when changing DIP switch positions. Even if blower is not operating, the motor will not recognize changes in DIP switch positions until unit power is removed and then restored.

The (-)H1V series air handlers have ECM blower motors, which deliver a constant level of airflow over a wide range of external static pressures (up to 1.0" W.C.). The interface board provides the required communications between the thermostat and the ECM blower motor. The (-)H1V series of air handlers feature:

• An automotive-style ATC blade fuse for transformer protection (3 amp).

• An on-board LED to indicate blower CFM.

TABLE 1

SWITCH FUNCTIONS

Switch Function

1 & 2 Cooling Airflow Settings 3 & 4 Cooling Airflow Adjustment 5 & 6 Heating Airflow Settings 7 & 8 Cooling Delay Profiles

9 & 10 On-Demand Dehumidification – Active & Passive

There is a bank of 10 DIP switches on the interface board that define the operation of the ECM motor (see Table 1).

Refer to Figure 23 for switch identification and factory default settings.

NOTE: All units are shipped from the factory on High Airflow.

FIGURE 23

ECM MOTOR FACTORY SETTINGS

Page 25

5.2 USING THE ON-BOARD LED TO DETERMINE BLOWER CFM (-)H1V

The (-)H1V interface board LED (see Figure 24) indicates blower output by flashing one (1) second for every 100 CFM of airflow. The LED will pause 1/10 second between each flash. After the blower CFM has been displayed, the LED will illuminate dimly for 10 seconds before repeating the sequence. (See Table 2.)

NOTE: If airflow is not a multiple of 100 CFM, the last LED flash is a fraction of a second of 100 CFM. (Airflow must be verified, flash code is what is set.)

FIGURE 24

IFC BOARD

LED

FUSE

TABLE 2

LED FLASH CODES

INTERFACE

BOARD

DIP SWITCH

SOME EXAMPLES OF

LED OUTPUT

SETTINGS

1200 CFM

600 CFM

950 CFM

• Flashes 12 times

• Illuminate dimly 10 seconds, repeat sequence

• Flashes 6 times

• Illuminate dimly 10 seconds, repeat sequence

• Flashes 9 times, flash once for

/2 second

• Illuminate dimly 10 seconds, repeat sequence

5.3 COOLING AND HEAT PUMP HEATING MODE AIRFLOW SETTINGS (-)H1V (SEE FIGURE 25)

The (-)H1V-series of air handlers allow a wide range of airflow settings for cooling and heat pump operation. These airflow settings are selected via DIP switches 1 and 2 on the interface board. DIP switches 1 and 2 allow the user to tailor the airflow for the particular installation.

NOTE: Cooling/heating air-flow adjustments using DIP switches 3 and 4 also affect electric heat airflow on (-)H1V air-handlers.

Page 26

FIGURE 25

FACTORY AIRFLOW SETTINGS FOR SWITCHES 1 AND 2 (-)H1V

O N

– COOLING AIRFLOW

NOTE: With no dehumidification; switch 9 “ON” (factory default)

SELECTION

(ONE OF

THE PAIRS)

A OFF OFF 800 800 1200 1200 1600 1600 1800 1800 B ON OFF 800 800 1200 1200 1600 1600 1800 1800 C OFF ON 600 600 1000 1000 1400 1400 1600 1600 D ON ON 600 600 1000 1000 1400 1400 1600 1600

BCD

SWITCH 1

AND 5

POSITION

SWITCH 2

AND 6

POSITION

(-)H1V 17/

/2 & 2 TON

Y1 Y2 Y1 Y2 Y1 Y2

COOLING/HEATING AIRFLOW

CABINET SIZE/COOLING CAPACITY

(-)H1V 17/

21/2 & 3 TON

(-)H1V 21/

31/2 & 4 TON

(-)H1V 24/

4 & 5 TON

Y1 Y2

5.4 COOLING/HEATING AIRFLOW ADJUSTMENTS (-)H1V (SEE FIGURE 25)

Cooling/heating airflow may be adjusted +10% or –10% from nominal airflow using switches 3 and 4.

Refer to Figure 26 for switch positions to achieve the desired adjustments in airflow. NOTE: Continuous fan speed is NOT affected by switches 3 and 4 selections. Continuous fan

speed is 50% of the selected cooling speed for switches 1 and 2. IMPORTANT: The use of On Demand Dehumidification overrides the cooling airflow adjust-

ments when high humidity is detected by a dehumidifying thermostat or humidistat when connected to the ODD wire (See Figure 17). Refer to the Cooling Mode Dehumidification section for more information.

5.5 ELECTRIC HEAT AIRFLOW SETTINGS/ADJUSTMENTS (-)H1V

DIP switches 5 and 6 control electric heat air-flow levels on (-)H1V air-handlers.

FIGURE 26

COOLING AIRFLOW ADJUSTMENTS (-)H1V

O N

SELECTION SWITCH 3 SWITCH 4 AIRFLOW

O N

BCD

POSITION POSITION ADJUSTMENT

A OFF OFF NONE B ON OFF 10% C OFF ON -10% D ON ON NONE

COOLING

Page 27

On Off

Ramp T imes C F M Re duction

5min utes 18% L ess

5to 12.5 minutes 12 %Les s

afte r 1 2.5 minutes 100% F ull

Operating Sequence

Pr e - p rogrammed CF M Ra tes

Ramp Times CFM Reduction

3minutes 18%Less

after 3 minutes 100% Full

Operating Sequence

Pre-programmed CFM Rates

Ramp Times CFM Reduction

3minutes 25%Less

3 to 8 m inutes 12% Less

after 8 minutes 100% Full

Operating Sequence

Pre-programmed CFM Rates

Off

S7 S8

Factory

on off on off

off on on off

Moisture Removal

Highest

Advanced Cooling Adjustments

Switch 7 and 8 Settings and Characteristics

Standard

Lowest

Good

FIGURE 27

FACTORY AIRFLOW SETTINGS FOR SWITCHES 5 AND 6 (-)H1V

O N

ABCD

MINIMUM AIR FLOW PER kW

3 kW to 13 kW = 600 min. CFM 15 kW to 18 kW = 800 min. CFM 20 kW to 25 kW = 1400 min. CFM 30 kW = 1800 min. CFM

ELECTRIC HEAT AIR FLOW

SELECTION

SWITCH 5 POSITION

SWITCH 6 POSITION

(-)H1V2417ST

(-)H1V3617ST

(-)H1V3821ST

(-)H1V-

4824ST

(-)H1V-

4824ST

A OFF OFF 800 1200 1200 1600 1800 1800 B ON OFF 600 600 600 800 800 800 C OFF ON 800 1000 1000 1400 1600 1600 D ON ON 600 600 600 800 800 800

5.6 COOLING DELAY PROFILES (-)H1V

The (-)H1V air handlers are shipped with a default 30 second blower OFF delay profile for maximum efficiency.

IMPORTANT: Blower ON delay profiles are not used in heating mode.

5.7 COOLING MODE DEHUMIDIFICATION (-)H1V (PASSIVE: FACTORY PROGRAMMED PROFILES)

Factory board settings will provide general overall performance under average conditions. Use these Advanced Profiles to optimize performance and to add soft motor operation. Please be sure that you check for correct airflow and adjust refrigerant charge based on your Maximum Capacity and Airflow using the Factory AIRFLOW SETTINGS. Switches 1 and 2 should be set for the tonnage and airflow requirement for the system. Advanced Airflow set- tings will, in most cases, greatly reduce airflow to the system and change the system’s Latent and Sensible capacity splits. The control board flashes CFM to the nearest 50 CFM calculated. We suggest that trouble-shooting be done with switches in the factory position for

verification of refrigerant charge and airflow through the duct system.

(-)H1V-

6024ST

FIGURE 28

COOLING AIRFLOW ADJUSTMENTS (-)H1V

TABLE 3 (-)H1V

Page 28

NOTE: The control is equipped with 3 preprogrammed CFM rates for moisture removal. These are selected with switches S7 and S8. Please refer to Figure 28 and Table 3 for moisture removal options.

• Multiple Switch Setting CAUTION: Switches 7 and 8 provide dehumidification by using preprogrammed airflow profiles and airflow percentage reductions that reduce airflow based from selections using switches 3 and 4. Exception: If Minus 10% is selected from switches 3 and 4, the selections of 7 and 8 reduction will be from the nominal CFM selected on 1 and

2. Multiple reductions in airflow will occur that may adversely reduce airflow if 7 and 8 profiles are used with a humidistat or dehumidifying thermostat. CAUTION: If a Humidistat, or

a Thermostat with a Dehumidifying feature, is to be used, leave switches 7 and 8 in the FACTORY POSITIONS (both in the off position) and skip Advanced Dehumidification Profiles.

5.8 COOLING MODE DEHUMIDIFICATION – ACTIVE (-)H1V

(Active Dehumidification: ODD senses RH% and adjusts airflow to maintain selected humidity levels.)

“On Demand Dehumidification”, ODD, terminal input allows the user to have automatic dehumidification in the cooling mode that is controlled by the user’s dehumidifying thermostat or humidistat setting. When the humidity exceeds the humidistat setting, the airflow is decreased by a preprogrammed amount. This results in higher latent capacity and increases the level of comfort.

Use of the On Demand Dehumidification feature is important with the (-)H1V air handlers. These systems typically have a latent capacity between 23% to 25% of total system capacity. On Demand Dehumidification drops cooling airflow to boost latent capacity without sacrificing total system capacity.

The interface board “ODD” terminal input is designed to be used with a dehumidifying thermostat or a traditional humidistat (see Figure 17). For proper operation, the dehumidifying thermostat or humidistat must conform to these conditions:

IMPORTANT: A humidistat can be used for dehumidification as long as it is the type where the contacts close when the humidity is low. Dehumidistat 41-25066-02 can also be used since its contacts close when the humidity is low. Other dehumidistats are not compatible with the interface board. Typical dehumidistats apply a 24V signal when humidity is high and are incompatible with the interface board.

Refer to the typical thermostat wiring section (See Figures 15-20) for recommended dehumidifying thermostats.

Page 29

5.9 ON DEMAND DEHUMIDIFICATION AIRFLOW ADJUSTMENT – ACTIVE (-)H1V

Use switches 9 & 10 to lower cooling airflow as defined in Figure 29:

FIGURE 29

ON DEMAND DEHUMIDIFICATION AIRFLOW ADJUSTMENT – ACTIVE (-)H1V

O N

PASSIVE

SELECTION

PASSIVE OFF OFF

ACTIVE OFF ON

IMPORTANT: Selection A turns off the input of the ODD terminal. DO NOT USE SELECTION A WITH A DEHUMIDIFYING THERMOSTAT OR HUMIDISTAT (refer to Figure 29).

Selection C: On Demand Dehumidification (See Table 5) – Active

ACTIVE

SWITCH 9 SWITCH 10 POSITION POSITION

COOLING AIRFLOW ADJUSTMENT

MAXIMUM LATENT REMOVAL

(WITHOUT ODD INPUT)

ON DEMAND DEHUMIDIFICATION1

(WITH ODD INPUT)

TABLE 4

SELECTION A EXPLANATION: MAXIMUM LATENT REMOVAL – PASSIVE (-)H1V

SWITCH POSITIONS

SWITCH 1 POSITION

OFF OFF OFF OFF 680 1020 1360 1530

ON OFF OFF OFF 680 1020 1360 1530

OFF ON OFF OFF 510 850 1190 1360

ON ON OFF OFF 510 850 1190 1360

SWITCH 2 POSITION

SWITCH 9 POSITION

SWITCH 10

POSITION

⁄2 & 2.0

17/

CABINET SIZE/COOLING CAPACITY

17/

2.0 & 3.0

21/

3.0

CFM

⁄2 & 4.0

21/

TABLE 5

SELECTION C EXPLANATION: ON DEMAND DEHUMIDIFICATION – ACTIVE (-)H1V

24/

4.0 & 5.0

SWITCH 1 POSITION

SWITCH 2

POSITION

OFF OFF OFF ON 24VAC 800 1200 1600 1800

ON OFF OFF ON 24VAC 800 1200 1600 1800

OFF ON OFF ON 24VAC 600 1000 1400 1600

ON ON OFF ON 24VAC 600 1000 1400 1600

TABLE 6

ODD TERMINAL (-)H1V

INDOOR INPUT TO “ODD”

AMBIENT TERMINAL

CONDITION (FROM HUMIDISTAT)

HIGH HUMIDITY Ø VAC LOW HUMIDITY 24 VAC

SWITCH 9 POSITION

CABINET SIZE/COOLING CAPACITYSWITCH POSITIONS

SWITCH 10

POSITION

ODD

INPUT

17 / 1

/2 & 2.0

Y1 Y2

17 / 2.0 & 3.0

21/3.0 Y1 Y2

21 / 3

/2 & 4.0

Y1 Y2

24 / 4.0 & 5.0

Y1 Y2

NONE 680 1020 1360 1530

NONE 510 830 1190 1360

This selection allows On Demand Dehumidification when using a dehumidifying thermostat or humidistat connected to the ODD wire (as shown in Figure 17). Nominal airflow is reduced by a preprogrammed amount to maximize latent removal.

IMPORTANT: A humidistat or dehumidifying thermostat MUST be connected to the ODD terminal when using this setting.

Page 30

5.10 AIRFLOW PERFORMANCE (-)H1V

Airflow performance data is based on cooling performance with a coil and no filter in place. Select performance table for appropriate unit size, voltage and number of electric heaters to be used. Make sure external static applied to unit allows operation within the minimum and maximum limits shown in table below for both cooling and electric heat operation. For optimum blower performance, operate the unit in the .1 [3 mm] to 1.00 inches [25 mm] W.C. external static range. Units with coils should be applied with a minimum of .1 inch [3 mm] W.C. external static.

5.11 AIRFLOW PERFORMANCE DATA (-)H1V

Model

Size

(-)H1V

2417ST No Heat

2417ST

with 13kw

Heater

2417ST No Heat

2417ST

with 13kw

Heater

3617ST No heat

3617ST

with

18kw heat

3617ST No heat

3617ST

with

18kw heat

3621MT No heat

3621MT

with

15kw heat

3621MT No heat

3621MT

with

18kw heat

4821ST No heat

4821ST

with

20kw heat

4821ST No heat

4821ST

with

25kw heat

Nominal

Cooling

Capacity

Tons

1.5

2.5

3.0

Motor

Speed

From

Factory

Nominal Air-Flow

High 600*

High 800

High

High 1200

High

2.5 ton High 1000

3.0 ton High 1200

3.0 ton High

3.5

High

3.5

High

4.0

High

4.0 High 1600

CFM

1000*

1200

1400*

1600

Blower

Size

Motor

H.P.

10x8 1/3 [249] 5 Speed

10x8

1/2

10x8

1/2

10x8

1/2

10x8

1/2

10x10

3/4

10x10

3/4

10x10

3/4

10x10

3/4

10x10

3/4

10x10

3/4

10x10

3/4

10x10

3/4

CFM Air Delivery/RPM/Watts-230 Volts

ECM

External Static Pressure-Inches W.C.

0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00

CFM 597 608 607 616 616 618 613 608 600 594 RPM 522 609 673 757 815 869 938 995 1051 1097

Watts 57 74 89 115 130 144 169 190 212 232

CFM 588 598 596 605 603 605 600 595 587 577 RPM 536 608 723 805 864 919 989 1047 1104 1149

Watts 65 85 100 129 145 160 186 209 233 254

CFM 787 805 815 819 810 807 811 810 809 805 RPM 614 682 763 818 868 917 972 1017 1070 1112

Watts 97 113 144 167 191 209 239 259 289 311

CFM 775 793 803 807 798 795 799 798 797 793 RPM 630 700 783 839 891 941 997 1044 1098 1141

Watts 111 130 165 192 219 240 275 298 332 357

CFM 1001 1030 1030 1035 1035 1029 1029 1029 1029 1023 RPM 652 752 812 845 923 945 1007 1065 1090 1118

Watts 134 166 193 212 244 266 280 320 341 357

CFM 980 1009 1009 1014 1014 1008 1008 1008 1008 1002 RPM 714 814 874 907 985 1007 1069 1127 1152 1180

Watts 176 208 235 254 286 308 322 362 383 399

CFM 1220 1229 1229 1229 1229 1229 1238 1238 1233 1228 RPM 732 831 875 930 981 1005 1077 1108 1156 1194

Watts 215 253 282 314 348 362 409 426 472 496

CFM 1199 1208 1208 1208 1208 1208 1217 1217 1212 1207 RPM 794 893 937 992 1043 1067 1139 1170 1218 1256

Watts 257 295 3245 356 390 404 451 468 514 538

CFM 1000 1001 1011 1009 1005 1000 996 994 970 967 RPM 593 650 737 801 867 914 980 1026 1058 1099

Watts 103 124 155 177 207 224 258 287 301 323

CFM 984 979 984 976 967 956 947 939 910 901 RPM 627 689 780 849 919 971 1041 1092 1128 1174

Watts 124 151 187 215 250 273 312 347 366 394

CFM 1175 1200 1203 1200 1200 1199 1202 1200 1197 1180 RPM 646 740 783 851 911 958 1013 1056 1102 1144

Watts 147 186 207 240 270 296 334 356 385 416

CFM 1159 1178 1176 1167 1162 1155 1153 1145 1137 1114 RPM 680 779 826 899 963 1015 1074 1122 1172 1219 Watts 168 213 239 278 313 345 388 416 450 487

CFM 1395 1404 1413 1413 1411 1411 1402 1391 1380 1371 RPM 731 807 859 910 968 1016 1057 1100 1128 1158 Watts 240 273 308 349 383 411 436 468 496 513

CFM 1379 1382 1386 1380 1373 1367 1353 1336 1320 1305 RPM 765 846 902 958 1020 1073 1118 1166 1198 1233 Watts 261 300 340 387 426 460 490 528 561 584

CFM 1583 1583 1583 1590 1582 1566 1572 1556 1547 1539 RPM 826 879 933 984 1025 1067 1119 1148 1176 1219 Watts 342 375 410 454 486 523 552 585 614 616

CFM 1567 1559 1551 1550 1534 1511 1509 1485 1468 1452

RPM 860 919 978 1035 1082 1129 1187 1222 1255 1304 Watts 363 403 444 495 534 577 613 653 688 697

Page 31

5.11 AIRFLOW PERFORMANCE DATA (-)H1V – continued

Model

Size

(-)H1V

4824ST No heat

Nominal

Cooling

Capacity

Tons

Motor

Speed

From

Factory

Nominal Air-Flow

4.0 High 1600*

CFM

4824ST

with

25kw heat

6024ST No heat

6024ST

with

25kw heat

6024ST No heat

4.0 High 1600*

4.0 &

High 1600*

5.0

4.0 &

High 1600*

5.0

5.0 High 1800

6024ST

with

30kw heat

*To obtain the nominal airflow 600 CFM for 2417, 1000 CFM for 3617, 1400 CFM for 4821, and 1600 CFM for 4824/6024; the DIP switches 1 and 2 must be set for selection C or D. See Figure 25.

5.0 High 1800

Blower

Size

Motor

H.P.

11x11

3/4

11x11

3/4

11x11

3/4

11x11

3/4

11x11

3/4

11x11

3/4

CFM Air Delivery/RPM/Watts-230 Volts

External Static Pressure-Inches W.C.

0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00

CFM 1607 1615 1622 1630 1637 1629 1621 1614 1606 1583 RPM 612 698 747 788 835 870 914 950 981 1018

Watts 225 297 334 359 410 439 469 502 532 568

CFM 1587 1589 1589 1591 1591 1577 1562 1549 1534 1505 RPM 658 748 802 847 899 938 987 1027 1063 1104

Watts 246 325 369 401 459 495 532 572 609 652

CFM 1607 1615 1622 1630 1637 1629 1621 1614 1606 1583 RPM 612 698 747 788 835 870 914 950 981 1018

Watts 225 297 334 359 410 439 469 502 532 568

CFM 1587 1589 1589 1591 1591 1577 1562 1549 1534 1505 RPM 658 748 802 847 899 938 987 1027 1063 1104

Watts 246 325 369 401 459 495 532 572 509 652

CFM 1794 1808 1808 1808 1807 1807 1807 1800 1786 1772 RPM 676 739 787 840 871 923 950 994 1028 1050

Watts 330 376 416 465 504 554 576 624 662 694

CFM 1756 1770 1770 1769 1769 1769 1769 1762 1748 1734 RPM 713 778 828 884 917 971 1000 1047 1083 1107

Watts 361 410 453 505 547 600 625 676 717 752

ECM

Page 32

6.0 AIR HANDLER EQUIPPED WITH THE COMFORT CONTROL2SYSTEM™ INTERFACE BOARD (-)H2V

FIGURE 30

THE AIR HANDLER COMFORT CONTROL2SYSTEM™ CONTROL BOARD

CONVENTIONAL THERMOSTAT WIRING

The (-)H2V series of air handlers are designed to operate with conventional 24VAC controls or with a serial communicating system.

For the Comfort Control

• Air handler equipped with the Comfort Control

• Condensing unit or heat pump equipped with the Comfort Control2System™.

• A Comfort Control2thermostat If your equipment does not meet this criteria, you must wire it using conventional 24VAC

thermostat control wiring. Reference Section 4.8.

System™, you must have:

6.1 COMFORT CONTROL2SYSTEM™ CONTROL WIRING

Comfort Control2System™ requires four (4) control wires for unit operation:

R – 24VAC C – 24VAC common 1 – Data wire 1 2 – Data wire 2

Wiring sizing for Comfort Control

Note: The Comfort Control IMPORTANT: When using the Comfort Control

24VAC thermostat wires. If any connections are made to the G, W1, W2, Y1, Y2, or ODD wires, the serial communicating control will assume the control is being used with a traditional thermostat and will IGNORE ANY COMMUNICATIONS USING DATA WIRE 1 AND DATA WIRE 2.

IMPORTANT: Class 2 low voltage control wire should not be run in conduit with power wiring and must be separated from power wiring, unless Class 1 wire of proper voltage rating is used.

• The four 18AWG low voltage control wires must be installed from the thermostat to the indoor unit and from indoor unit to the outdoor unit. The wire length between the thermostat and indoor unit should not be greater than 100 feet. The wire length between the indoor unit and outdoor unit should not be greater than 125 feet.

• Low voltage control connections are made by extending wires from top of air handler using wire nuts.

• See wiring diagrams attached to indoor and outdoor sections to be connected

• Do not leave excess field control wiring inside unit, pull excess control wire to outside of unit and provide strain relief for field wiring on inside of cabinet at point wiring penetrates cabinet.

• Make sure, after installation, separation of control wiring and power wiring has been maintained.

is identical to systems using low voltage 24V wires.

System™ requires a minimum 18 AWG.

, do not make any connections to the

Page 33

6.2 COMFORT CONTROL2SYSTEM™ CONTROL BOARD (-)H2V

Indoor Unit

WIRING INFORMATION Line Voltage –Field Installed - - - - - –Factory Standard

Communicating Thermostat

Outdoor Unit

FIGURE 31

TYPICAL COMFORT CONTROL2SYSTEM™ WIRING DIAGRAM

The (-)H2V series air handler control, Figure 30, has the following features:

• Memory Card – The memory card stores all information needed for unit operation. Once the system is wired for the Comfort Control thermostat and outdoor unit. This shared data is available if one of the components in the system needs to be replaced.

• An automotive-style ATC blade fuse for transformer protection (3 amp).

• An on-board LED to indicate blower CFM.

• An RJ-11 port for use with a diagnostic tool.

• Inputs for field installed supply and return air temperature sensors (available in kit RXHT-A01)

• DIP switches for airflow adjustments

IMPORTANT: The DIP switches are NOT used when the air handler is wired for the

Comfort Control

. Airflow adjustments are performed via the thermostat or a diagnostic

tool.

Installation Verification

• Term and bias dip switches should be on.

• 24V AC power on R&C must be present at the control for the air handler to operate, reference Figure 31.

• Line voltage must be present at the control for indoor blower operation.

• The RX Data LED will flash green in normal operation. A flashing green light indicates 24VAC is present and the data wires 1 and 2 are wired properly.

IMPORTANT: If the RX DATA LED is solid green, data wire 1 and data wire 2 are not properly connected. Typically, the connections are switched, i.e. data wire 1 is wired to the data wire 2 connection and data wire 2 is wired to the data wire 1 connection. Verify wiring and correct the polarity at the two data wires.

IMPORTANT: Diagnostic port is not a phone jack. Connecting to a telephone or tele-

phone system will result in damage. IMPORTANT: Diagnostic port is for diagnostic tool only. Do not attempt to connect

components using a telephone cord. Damage will occur.

, this information is shared with the

CONVENTIONAL THERMOSTAT WIRING

6.3 USING THE ON-BOARD LED TO DETERMINE BLOWER CFM (-)H2V

The CFM LED indicates blower output by flashing one (1) flash for every 100 CFM of airflow. The LED will pause 1/10 second between each flash. (See Table 1.)

6.4 AIRFLOW ADJUSTMENTS WITH THE COMFORT CONTROL2SYSTEM™

(-)H2V

The RHPN air handler Comfort Control2System™ may operate using the Comfort

Control Comfort Control Control

or via traditional thermostat wiring. When the air handler is wired for the

control have NO affect on the airflow.

IMPORTANT: When using the Comfort Control airflow or on air handler performance.

using Data wire 1 and Data wire 2, the DIP switches on the Comfort

, the DIP switches have no affect on

Page 34

6.5 COOLING AIRFLOW SETTINGS (BY TONNAGE) (-)H2V

The (-)H2V-series of air handlers automatically set cooling airflow when using the

Comfort Control

and sets airflow for optimum performance and comfort. Refer to Table 1 for the airflow provided when the (-)H2V air handler is matched to the RARL/RASL condensing units.

TABLE 7

RHPN AIRFLOW WHEN MATCHED TO THE (-)ASL CONDENSING UNITS (-)H2V

. The air handler detects the tonnage of the condensing unit/heat pump

Condensing Unit

Model

2nd Stage 1st Stage

Airflow (cfm)

(-)ASL-025 775 600 (-)ASL-037 1175 950 (-)ASL-039 1175 825 (-)ASL-048 1600 1000 (-)ASL-060 1700 1050

RHPN AIRFLOW WHEN MATCHED TO THE (-)ARL CONDENSING UNITS

Condensing Unit

Model

2nd Stage

Airflow (cfm)

1st Stage

(-)ARL-025 775 600 (-)ARL-038 1175 950 (-)ARL-049 1600 1200 (-)ARL-061 1700 1275

6.6 COOLING AIRFLOW ADJUSTMENT (-)H2V

The Comfort Control2does allow the installer to tweak the cooling airflow +/-10% to suit the installation. When using the Comfort Control adjusted using the Comfort Control

thermostat or a service tool. To adjust the airflow,

go to the airflow adjustment menu and select the desired adjustment. (Refer to Table 2).

TABLE 8

AIRFLOW ADJUSTMENT SELECTION TABLE (-)H2V

System™, the airflow can only be

CONVENTIONAL THERMOSTAT WIRING

Selection

None +10% –10%

IMPORTANT: Cooling airflow adjustment is accessible via the Comfort Control mostat or via a service tool. Refer to their instructions to access the cooling airflow adjustment menu.

NOTE: Cooling airflow adjustments are in effect for cooling operation only. They are ignored when in heating mode or when electric heat is activated.

ther-

6.7 ELECTRIC HEAT AIRFLOW (-)H2V

The H2V-series of air handlers are factory programmed to provide adequate airflow for the maximum electric heat (auxiliary heat) allowed for a given model. Airflow adjustment for lower KW heater applications is accessible via the Comfort Control stat or via a service tool. Refer to their instructions to access the “Heating Airflow Adjustment” menu.

TABLE 9

ELECTRIC HEAT AIRFLOW FOR THE RHPN AIR HANDLERS (-)H2V

Air Handler

Model

RH2V2421HTACJA00 800 CFM 600 CFM RH2V3624HTACJA00 1200 CFM 600 CFM RH2V4824HTACJA00 1600 CFM 800 CFM RH2V6024HTACJA00 1800 CFM 800 CFM

Above 15KW:

15KW and

below:

System thermo-

Page 35

TABLE 10

ODD TERMINAL (-)H2V

INDOOR INPUT TO “ODD”

AMBIENT TERMINAL

CONDITION (FROM HUMIDISTAT)

HIGH HUMIDITY Ø VAC LOW HUMIDITY 24 VAC

6.8 COOLING MODE DEHUMIDIFICATION (-)H2V

The Comfort Control2control is shipped with “On Demand Dehumidification” (ODD) turned OFF. On Demand Dehumidification may be activated when the serial communicating thermostat has an on-board humidity sensor.

IMPORTANT: On Demand Dehumidification is accessible via the Comfort Control

thermostat or via a service tool. Refer to their instructions to access the ODD airflow adjustment menu.

6.9 COOLING DELAY PROFILES (-)H2V

The (-)H2V air handler is factory configured with optimum ON/OFF delays to maximize energy efficiency and comfort. In certain situations, the installer may choose an alternate profile to tweak the system operation for the building load and to maximize comfort. The alternate profiles are defined below:

IMPORTANT: On Demand Dehumidification, ODD, is the preferred method to maximize comfort with little or no loss of energy efficiency. If using ODD, do NOT use any of the alternate profiles. Only use the factory default profile. Use of the alternate profiles with ODD will decrease energy efficiency with no gain in comfort.

Profile A – Factory default profile.

On Delay

Air Handler

RH2V2421HTACJA00 No delay N/A 45 RH2V3624HTACJA00 No delay N/A 45 RH2V4824HTACJA00 No delay N/A 45 RH2V6024HTACJA00 No delay N/A 45

Delay Duration

(second)

% Rated Airflow Off Delay (seconds)

CONVENTIONAL THERMOSTAT WIRING

Profile B – Quiet Start profile

The Quiet Start profile is configured to bring the blower up to 50% airflow for 30 seconds before advancing to 100% airflow. This minimizes air flow sounds at system startup.

On Delay

Air Handler

RH2V2421HTACJA00 30 50 15 RH2V3624HTACJA00 30 50 15 RH2V4824HTACJA00 30 50 15 RH2V6024HTACJA00 30 50 15

Delay Duration

(second)

% Rated Airflow Off Delay (seconds)

Profile C – Humid Climate Profile

The humid profile is configured to run the blower at 80% airflow for about the first four minutes of system operation to remove more moisture from the conditioned space.

On Delay

Air Handler

RH2V2421HTACJA00 255 80 0 RH2V3624HTACJA00 255 80 0 RH2V4824HTACJA00 255 80 0 RH2V6024HTACJA00 255 80 0

Delay Duration

(second)

% Rated Airflow Off Delay (seconds)

Profile D – Dry Climate profile

The Dry Climate profile is configured for areas that require little to no additional dehumidification.

On Delay

Air Handler

RH2V2421HTACJA00 150 88 60 RH2V3624HTACJA00 150 88 60 RH2V4824HTACJA00 150 88 60 RH2V6024HTACJA00 150 88 60

Delay Duration

(second)

% Rated Airflow Off Delay (seconds)

Page 36

6.10 USING THE ON-BOARD LED TO DETERMINE BLOWER CFM (-)H2V

The (-)H2V interface board LED indicates blower output by flashing once for every 100 CFM of airflow. The LED will pause 1/10 second between each flash. (See Table 2.)

6.11 COOLING AIRFLOW SETTINGS

FIGURE 32

DIP SWITCH SETTING FOR COOLING AIRFLOW (-)H2V

When not using the Comfort Control2System™, the (-)H2V air handler must be configured to deliver the proper airflow. Adjust DIP switches 1 and 2 per these tables for proper unit operation:

TABLE 11

AIRFLOW SETTINGS WHEN USING TRADITIONAL 24VAC THERMOSTAT (-)H2V

(-)H2V

2421HT (-)ASL-025 OFF OFF 775 600 3624HT (-)ASL-037 ON OFF 1175 950 3624HT (-)ASL-039 OFF OFF 1175 825 4824HT (-)ASL-048 OFF OFF 1600 1000 6024HT (-)ASL-060 OFF OFF 1700 1050 2421HT (-)ARL-025 ON OFF 775 600 3624HT (-)ARL-038 ON OFF 1175 950 4824HT (-)ARL-049 ON OFF 1600 1200 6024HT (-)ARL-061 ON OFF 1700 1275

Outdoor Unit

(also see

Section 5.13)*

Switch 1 Position

Switch 2 Position

Airflow (CFM)

2nd Stage (Y2) 1st Stage (Y1)

CONVENTIONAL THERMOSTAT WIRING

*6.12 COOLING AIRFLOW ADJUSTMENTS WITH SINGLE STAGE CONDENSING UNITS

The (-)H2V series of air handlers can be used with select single-stage condensing units. Refer to the Engineering Specifications Sheets to determine the required airflow for your particular combination. Refer to Table 5 to determine the air-flows available for each (-)H2V air handler. Reference Figures 27-30 for proper wiring of the system.

Page 37

6.13 AIRFLOW ADJUSTMENT (-)H2V (TRIM)

FIGURE 33

DIP SWITCH SETTING FOR AIRFLOW ADJUSTMENTS

When not using the Comfort Control2System™, the (-)H2V air handler cooling airflow can be tweaked +/-10% to suit the installation. To adjust the airflow, adjust DIP switches 5 and 6 per this table:

IMPORTANT: The DIP switches are active only when using conventional a 24VAC thermostat. If using the Comfort Control

System™, refer to Section 5.4 for adjusting air-

flows. NOTE: Airflow adjustment is active for cooling operation only. Cooling airflow adjust-

ments are ignored when electric heat is activated.

6.14 ELECTRIC HEAT AIRFLOW

The RHPN-series air handlers are shipped with the “Low KW airflow” feature turned OFF. Activate lower airflow feature for lower KW electric heat applications by turning DIP switch 8 ON.

IMPORTANT: The DIP switches are active only when using a conventional 24VAC thermostat. If using the Comfort Control flow adjustment.

System™, refer to section 5.5 for low KW heat air-

CONVENTIONAL THERMOSTAT WIRING

ELECTRIC HEAT AIRFLOW FOR THE RHPN AIR HANDLERS (-)H2V

Air Handler

Model

RH2V2421HTACJA00 800 CFM 600 CFM RH2V3624HTACJA00 1200 CFM 600 CFM RH2V4824HTACJA00 1600 CFM 800 CFM RH2V6024HTACJA00 1800 CFM 800 CFM

6.15 COOLING MODE DEHUMIDIFICATION

FIGURE 34

ON DEMAND DEHUMIDIFICATION DIP SWITCH (-)H2V

Above

15KW:

15KW and

below:

Page 38

The (-)H2V series air handler is shipped with “On Demand Dehumidification” (ODD)

Normal Humidity Result A 24VAC signal is applied to the ODD terminal

Full rated airflow is delivered by the blower

High Humidity Result No signal applied to the ODD terminal

Airflow is reduced by a preset amount to increase latent capacity

turned OFF. On Demand Dehumidification is used in conjunction with a traditional 24VAC thermostat equipped with an on-board humidity sensor. Activate ODD by turning DIP switch 7 ON. ODD operation is controlled by the indoor humidity sensed at the thermostat. Operation is:

Normal Humidity (humidity BELOW the thermostat set point):

High Humidity (humidity ABOVE the thermostat set point):

The (-)H2V air handler is programmed to provide maximum efficiency and optimum humidity removal. When high humidity is detected, the air handler reduces cooling airflow defined in Table 6.

TABLE 12

ODD AIRFLOW REDUCTION (-)H2V

(-)H2V

2421HT (-)ASL-025 OFF OFF 650 500 3624HT (-)ASL-037 ON OFF 950 750 3624HT (-)ASL-039 OFF OFF 950 650 4824HT (-)ASL-048 OFF OFF 1275 800 6024HT (-)ASL-060 OFF OFF 1350 850 2421HT (-)ARL-025 ON OFF 650 500 3624HT (-)ARL-038 ON OFF 950 750 4824HT (-)ARL-049 ON OFF 1275 950 6024HT (-)ARL-061 ON OFF 1350 1025

Outdoor

Unit

Switch 1 Position

Switch 2 Position

Airflow (CFM)

2nd Stage (Y2) 1st Stage (Y1)

IMPORTANT: The DIP switches are active only when using conventional a 24VAC ther-

mostat. If using the Comfort Control flows.

NOTE: ODD airflow adjustments are active for cooling operation only. They are ignored

CONVENTIONAL THERMOSTAT WIRING

when the heat pump is in heating mode or when electric heat is activated.

6.16 COOLING DELAY PROFILES (-)H2V

Cooling delay profiles are not available when the H2V air handler is controlled using a conventional 24VAC thermostat. These profiles are available only when the air handler is wired for the Comfort Control Cooling Delay Profiles.

System™, refer to Section 5.4 for adjusting air-

System™. Refer to Section 5.4 for the Comfort Control

Page 39

Size

Motor HP

Unit

Operation

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

550 575 600 600 625 625 625 600 575 550 455 540 620 695 760 825 885 940 985 1030

540 615 685 750 810 870 925 975 1020 1065

70 90 115 135 160 180 205 225 250 270 950 950 1000 975 975 975 925 925 925 925 495 555 610 665 720 770 820 865 910 955

550 600 650 700 750 800 850 900 925 975 125 175 200 225 250 275 300 325 375 400 825 825 875 875 850 850 825 825 800 800 455 515 575 630 680 730 780 830 875 915

70 90 115 135 155 180 205 230 255 280

1150 1150 1175 1175 1175 1150 1150 1150 1125 1125

550 600 650 700 750 800 850 900 925 975 125 175 200 225 250 275 300 325 375 400

1275 1275 1250 1250 1275 1250 1250 1225 1225 1225

533 593 649 702 752 798 841 881 917 950 131 161 191 221 250 279 307 335 363 390

1650 1650 1675 1700 1700 1700 1675 1675 1675 1675

635 698 761 824 887 950 1013 1075 1120 1006 244 293 340 384 425 464 500 533 564 592

1000 1000 1025 1025 1000 1000 975 975 975 975

500 575 625 675 725 775 825 875 925 950 100 125 150 175 200 225 250 275 300 325

1650 1650 1675 1700 1700 1700 1675 1675 1675 1675

635 698 761 824 887 950 1013 1075 1120 1006 244 293 340 384 425 464 500 533 564 592

1275 1275 1275 1275 1275 1275 1275 1250 1250 1250

577 633 687 738 786 831 874 914 951 986 159 189 218 248 279 310 341 372 404 436

1625 1625 1650 1675 1675 1650 1650 1625 1625 1625

691 742 790 835 877 916 953 986 1016 1044 289 334 377 417 456 493 529 562 593 623

1050 1050 1075 1075 1050 1025 1025 1025 1025 1000

525 575 625 675 750 800 825 875 925 975 100 125 150 175 225 250 275 300 325 350

1625 1625 1650 1675 1675 1650 1650 1625 1625 1625

691 742 790 835 877 916 953 986 1016 1044 289 334 377 417 456 493 529 562 593 623

230 Volts

Cabinet

Size

Nominal

Airflow

CFM

CFM RPM

WATTS

Blower

85 105 120

Air

Handler

(-)H2V

1175

External Static Pressure - In. W.C.

405570

1050

1700

1275

1700

IMPORTANT: Observe airflow operating limits. Do not operate above 1.0 in. W.C. system external static.

2421HT

(-)ASL-039

11x11

3/4

1000

1600

950

11x11

Outdoor Unit

(-)ASL-025

(-)ARL-025

(-)ARL-038

(-)ASL-037

775

First Stage

(Y1)

Second

Stage

(Y2)

10x8

1/3

600

775

775 775 800 800 825 825

150 170135 185 825 825 825

115 140 165 185 210 240 265 290

3624HT

320

1150 1150 1175 1175 1175 1150 1150

1200

1600

1125

1175

1150 1125

4824HT

(-)ARL-049

(-)ASL-048

6024HT

(-)ARL-061

(-)ASL-060

3/4

11x11

3/4

First Stage

(Y1)

First Stage

(Y1)

First Stage

(Y1)

First Stage

(Y1)

First Stage

(Y1)

First Stage

(Y1)

Second

Stage

(Y2)

Second

Stage

(Y2)

Second

Stage

(Y2)

Second

Stage

(Y2)

Second

Stage

(Y2)

Second

Stage

(Y2)

6.17 AIRFLOW PERFORMANCE DATA (-)H2V

CONVENTIONAL THERMOSTAT WIRING

6.18 AIR HANDLER DIAGNOSTIC CODES (-)H2V

Descriptions of the air handler Comfort Control2diagnostic codes are provided below. These codes can be displayed at the thermostat or via a diagnostic tool.

IMPORTANT: Air handler diagnostic codes are available at the thermostat when the system is wired for the Comfort Control lowing diagnostic codes.

. If using the Comfort Control2, refer to the fol-

Page 40

6.18 AIR HANDLER DIAGNOSTIC CODES (-)H2V (continued)

Descriptions of the ICC diagnostic codes are provided below:

7-Segment

LEDs Display

Code

d1 – No Shared Data The control board does not have shared data.

d3 – Airflow CFM Mismatch The air handler cannot supply the required airflow for proper system operation

d4 – (Device) Memory Card Invalid for Device The memory card is missing or the data in the memory card does not match the data in the control.

d5 – Card Hardware Conflict The motor horsepower is not correct for the air handler

d6 – BLWR HP CNFLCT Blower Horsepower conflict The horsepower data in the memory card does not match the motor horsepower.

CONVENTIONAL THERMOSTAT WIRING

d7 – BLWER MFG CNFLCT The System does not have any data on the installed motor.

d8 – Old Shared Data System data is obsolete

60 – BLWR FLT–RUN The ECM motor is running but has a fault

61 – BLWR FLT–NO RUN The ECM motor is not operating

68 – ECM No Signal The ECM motor is not communicating to the air handler control board.

81 – Return Air Sensor Out of Range The resistance of the sensor out of range for normal operation.

82 – Supply Air Sensor Out of Range The resistance of the sensor out of range for normal operation.

93 – Internal Control Fault The air handler control is not functioning.

Diagnostic Description

Status/Possible Cause – Troubleshooting

• Replace memory card with correct system information

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

• Check memory card to ensure it matches device

• Check if memory card is present

• Replace the air handler motor with the correct horsepower motor.

• Replace the memory card with correct system information.

• Replace the motor with correct horsepower motor.

• Replace the memory card with correct system information. Check memory card to ensure it matches device

• Replace the memory card with correct system information.

• If system will not operate, order new memory card to update system information.

• TEST the ECM for proper operation.

• Make sure the ECM motor wiring harness is plugged into the ECM motor and control board.

• Test the ECM motor for proper operation.

• Make sure the ECM motor wiring harness is plugged into the ECM motor and control board.

• Test the ECM motor for proper operation using a service tool.

• Make sure the sensor is plugged into the air handler control board.

• Check the resistance of the sensor. Replace if it is out of tolerance.

• Make sure the sensor is plugged into the air handler control board.

• Check the resistance of the sensor. Replace if it is out of tolerance.

• Check control for proper system operation.

• Replace control

Information

Page 41

7.0 DUCTWORK

Field ductwork must comply with the National Fire Protection Association NFPA 90A, NFPA 90B and any applicable local ordinance.

WARNING

Sheet metal ductwork run in unconditioned spaces must be insulated and covered with a vapor barrier. Fibrous ductwork may be used if constructed and installed in accordance with SMACNA Construction Standard on Fibrous Glass Ducts. Ductwork must comply with National Fire Protection Association as tested by U/L Standard 181 for Class I Air Ducts. Check local codes for requirements on ductwork and insulation.

• Duct system must be designed within the range of external static pressure the unit is designed to operate against. It is important that the system airflow be adequate. Make sure supply and return ductwork, grills, special filters, accessories, etc. are accounted for in total resistance. See airflow performance tables in this manual.

• Design the duct system in accordance with “ACCA” Manual “D” Design for Residential Winter and Summer Air Conditioning and Equipment Selection. Latest editions are available from: “ACCA” Air Conditioning Contractors of America, 1513 16th Street, N.W., Washington, D.C. 20036. If duct system incorporates flexible air duct, be sure pressure drop information (straight length plus all turns) shown in “ACCA” Manual “D” is accounted for in system.

• Supply plenum is attached to the 3/4” duct flanges supplied on the unit around the blower outlet. Flanges are flat for shipping purposes and must be bent up along perforated edge around blower opening. Be sure to bend flanges completely up so they do not interfere with air being discharged from blower.

IMPORTANT: Flanges around blower opening for attaching supply duct must be up out of blower discharge even if not used so they do not restrict airflow from blower.

IMPORTANT: If an elbow is included in the plenum close to the unit, it must not be smaller than the dimensions of the supply duct flange on the unit.

• Some units with electric heaters require 1 in. clearance to supply plenum and branch ducts to combustible material for the first 3 feet from the unit. See CLEARANCES.

• A 3/4” return duct flange is supplied on all sides of the air inlet opening of the unit coil casing. If the unit is to be installed without a coil casing (no indoor coil), a 3/4”flange is supplied on the back and sides of the air inlet opening of the blower casing. No flange is provided on the front of the opening to the blower casing. If return duct is attached to the inlet of the blower casing, the front flange of the duct should be run up into the opening or 90° brake made on the front flange to tape to the front of the blower casing.

• IMPORTANT: The front flange on the return duct if connected to the blower casing must not be screwed into the area where the power wiring is located. Drills or sharp screw points can damage insulation on wires located inside unit.

• Return duct flanges on blower or coil casing are flat for shipping purposes and must

be bent out along perforated edge around opening.

• Secure the supply and return ductwork to the unit flanges, using proper fasteners for

the type of duct used and tape the duct-to-unit joint as required to prevent air leaks.

Page 42

8.0 REFRIGERANT CONNECTIONS

Keep the coil connections sealed until refrigerant connections are to be made. See the Installation Instructions for the outdoor unit for details on line sizing, tubing installation, and charging information.

Coil is shipped with a low (5 - 10 PSIG) pressure charge of dry nitrogen. Evacuate the system before charging with refrigerant.

Install refrigerant tubing so that it does not block service access to the front of the unit. Nitrogen should flow through the refrigerant lines while brazing. Make sure to protect TXV, copper to aluminum joint, and service valves from overheating

by use of wet rag or some type of shielding. Double tip torches are not recommended. Use a brazing shield to protect the cabinet’s paint from being damaged by torch flames. After the refrigerant connections are made, seal the gap around the connections with

pressure sensitive gasket. If necessary, cut the gasket into two pieces for a better seal.

8.1 TEV SENSING BULB

IMPORTANT: DO NOT perform any soldering with the TEV bulb attached to any line. After soldering operations have been completed, clamp the TEV bulb securely on the

suction line at the 10 to 2 o’clock position with the strap provided in the parts bag. Insulate the TEV sensing bulb and suction line with the provided pressure sensitive

insulation (size 4” x 7”) and secure with provided wire ties. IMPORTANT: TEV sensing bulb should be located on a horizontal section of suction

line, just outside of coil box.

FIGURE 35

BULB LOCATION

10 O’CLOCK 2 O’CLOCK

BULB

VAPOR LINE

BULB

Page 43

FIGURE 36

BULB LOCATION

8.2 CONDENSATE DRAIN TUBING

Consult local codes or ordinances for specific requirements. IMPORTANT: When making drain fitting connections to the drain pan, use a thin layer

of Teflon paste, silicone or Teflon tape and install hand tight. IMPORTANT: When making drain fitting connections to drain pan, do not overtighten.

Overtightening fittings can split pipe connections on the drain pan.

• Install drain lines so they do not block service access to front of the unit. Minimum clearance of 24 inches is required for filter, coil or blower removal and service access.

• Make sure unit is level or pitched slightly toward primary drain connection so that water will drain completely from the pan. (See Figure 20.)

• Do not reduce drain line size less than connection size provided on condensate drain pan.

• All drain lines must be pitched downward away from the unit a minimum of 1/8” per foot of line to ensure proper drainage.

• Do not connect condensate drain line to a closed or open sewer pipe. Run condensate to an open drain or outdoors.

• The drain line should be insulated where necessary to prevent sweating and damage due to condensate forming on the outside surface of the line.

• Make provisions for disconnecting and cleaning of the primary drain line should it become necessary. Install a 3 in. trap in the primary drain line as close to the unit as possible. Make sure that the top of the trap is below connection to the drain pan to allow complete drainage of pan (See Figure 37).

• Auxiliary drain line should be run to a place where it will be noticeable if it becomes operational. Occupant should be warned that a problem exists if water should begin running from the auxiliary drain line.

• Plug the unused drain connection with the plugs provided in the parts bag, using a thin layer of teflon paste, silicone or teflon tape to form a water tight seal.

• Test condensate drain pan and drain line after installation is complete. Pour water into drain pan, enough to fill drain trap and line. Check to make sure drain pan is draining completely, no leaks are found in drain line fittings, and water is draining from the termination of the primary drain line.

8.3 DUCT FLANGES

Field-installed duct flanges (4 pieces) are shipped with units. Install duct flanges as needed on top of the unit. (See Figure 3.)

Page 44

FIGURE 37

CONDENSATE DRAIN TRAP

DO NOT OPERATE UNIT WITHOUT

CONDENSATE DRAIN TRAP.

UNIT

3''

DO NOT OVERTIGHTEN DRAIN FITTING

UNIT MUST BE SLIGHTLY INCLINED

TOWARD DRAIN CONNECTION.

9.0 AIR FILTER (Not Factory-Installed)

If a remote filter is installed, it should be sized for a maximum of 300 feet/min. air velocity for the CFM required.

IMPORTANT: Do not operate system without a filter. A filter is required to protect the coil, blower and internal parts from excessive dirt and dust.

10.0 SEQUENCE OF OPERATION

10.1 Cooling (cooling only or heat pump)

• When the thermostat “calls for cooling,” the circuit between R, G and Y is completed, causing the blower to energize. This circuit also closes the contactor (CC) in the outdoor unit starting the compressor (COMP) and outdoor fan motor (OFM).

10.2 Heating (electric heat only)

• When the thermostat “calls for heat,” the circuit between R and W1is completed, and the heater sequencer (HR elements (HE) and the indoor blower motor (IBM) will come on. Units with a second heater sequencer (HR thermostat sub-base or connected to a second stage W W

on the furnace board MUST be connected for heating blower operation.

10.3 Heating (heat pump)

• When the thermostat “calls for heat,” the circuits between R and G are completed. Circuit R and B energizes the reversing valve (RV) switching it to the heating position (remains energized as long as system switch is in “heat” position). Circuit R and Y energizes the contactor (CC) starting the outdoor fan motor (OFM), compressor (COMP), and the indoor blower motor (IBM).

• If the room temperature should continue to fall, circuit R and W second-stage heat room thermostat. Circuit R-W The completed circuit will energize supplemental electric heat. Units with a second heater sequencer (HR stat or connected to a third heating stage W the thermostat indicates when supplemental heat is being energized.

) is energized. A time delay will follow then: The heating

) can be connected with the first sequencer (HR1) to W on the

2 energizes a heat sequencer (HR1).

2) can be connected with first sequencer (HR1) to W2 on thermo- 3 on the thermostat sub-base. A light on

on the sub-base.

2 is completed by the

10.4 DEFROST

• For sequence of operation for defrost controls, see outdoor heat pump installation instructions.

• Supplemental heat during defrost can be provided by connecting the purple (PU) pigtail in the outdoor unit to P on the indoor unit control board. This will complete the circuit between R and W through a set of contacts in the defrost relay (DR) when the outdoor heat pump is in defrost. This circuit, if connected, will temper air being discharged from the indoor unit during defrost.

Page 45

• Defrost heat control (DHC) is wired in series in the circuit described above on units where the supplemental heat is more than would be required to offset the defrost cooling capacity. Defrost heat control (DHC) is provided on the same models described above having watt restrictors.

• When the outdoor unit goes into defrost, the circuit between R and W is completed through a set of contacts on the defrost relay (DR) in series with the contacts on the defrost heat control (DHC). Purple (PU) pigtails on the indoor unit and outdoor units must be connected to make circuit. During defrost, the defrost heat control (DHC) senses the air temperature leaving the indoor unit and cycles the supplemental electric heat to maintain comfort (75° to 85°) air temperature and prevent objectionable cold air during defrost. This limits the electric heat output to the minimum required, to conserve energy and prevent the thermostat from being satisfied with electric heat and preventing completion of the defrost cycle.

• For most economical operation, if cold air is not of concern during defrost, the purple wire can be left disconnected. Supplemental heat will only be energized by a call from second stage room thermostat.

10.5 EMERGENCY HEAT (Heating of Heat Pump)

• If selector switch on thermostat is set to the emergency heat position, the heat pump will be locked out of the heating circuit, and all heating will be electric heat. Jumper should be placed between W

2 and E on the thermostat sub-base so that the electric

heat control will transfer to the first stage heat on the thermostat. This will allow the indoor blower to cycle on and off with the electric heat when the fan switch is in the auto position.

10.6 ROOM THERMOSTAT (ANTICIPATOR SETTING)

See instructions with outdoor section, condensing unit or heat pump for recommended room thermostats.

• On units with one electric heat sequencer (HR anticipator setting should be .16.

• On units with two electric heat sequencers (HR heat anticipator setting should be .32 if both are connected to same stage on thermostat. Setting should be .16 if (HR

1 &HR2) are connected to separate stages.

NOTE: Some thermostats contain a fixed, non-adjustable heat anticipator. Adjustment is not permitted.

• The thermostat should be mounted 4 to 5 feet above the floor on an inside wall of the living room or a hallway that has good air circulation from the other rooms being controlled by the thermostat. It is essential that there be free air circulation at the location of the same average temperature as other rooms being controlled. Movement of air should not be obstructed by furniture, doors, draperies, etc. The thermostat should not be mounted where it will be affected by drafts, hot or cold water pipes or air ducts in walls, radiant heat from fireplace, lamps, the sun, T.V. or an outside wall. See instruction sheet packaged with thermostat for mounting and installation instructions.

NOTE: Some thermostats, particularly solid-state digital types, contain fixed, nonadjustable heat anticipators and adjustment is not permitted.

1) (see wiring diagram on unit), heat

1 & HR2) (see wiring diagram on unit),

11.0 CALCULATIONS

11.1 CALCULATING TEMPERATURE RISE

• The formula for calculating air temperature rise for electric resistance heat is:

Temperature Rise °F = Where: 3.16 = Constant, CFM = Airflow

11.2 CALCULATING BTUH HEATING CAPACITY

• The formula for calculating BTUH heating capacity for electric resistance heat is:

BTUH Heating = Watts x 3.412 Where: 1 kW = 1000 Watts, 3.412 = Btuh/Watt

3.16 x Watts CFM

Page 46

11.3 CALCULATING AIRFLOW CFM

• The formula for calculating airflow using temperature rise and heating BTUH for units with electric resistance heat is:

CFM =

Heating BTUH

1.08 x Temp. Rise

11.4 CALCULATING CORRECTION FACTOR

• For correction of electric heat output (kW or BTUH) or temperature rise at voltages other than rated voltage multiply by the following correction factor:

Correction Factor =

Applied Voltage

Rated Voltage

12.0 PRE-START CHECKLIST

PRE-START CHECKLIST

❍

YES

❍ NO

❍ YES ❍ NO

Is unit properly located, level, secure and serviceable?

Has auxiliary pan been provided under the unit with separate drain? (Units installed above a finished ceiling).

Is condensate line properly sized, run, trapped, pitched and tested?

Is ductwork correctly sized, run, taped and insulated?

❍ YES ❍ NO

Have all cabinet openings and wiring been sealed with caulking?

Is the filter clean, in place and of adequate size?

Is the wiring tight, correct and to the wiring diagram?

Is the unit properly grounded and protected (fused)?

Is the thermostat heat anticipator been set properly?

Is the unit circuit breaker(s) rotated properly “on” up

- “off” down? Are the unit circuit breaker(s) line lug cover(s) in

place? Are all access panels in place and secure?

Refer to outdoor unit installation instructions for system

start-up instructions and refrigerant charging instructions.

13.0 MAINTENANCE

For continuing high performance, and to minimize possible equipment failure, it is essential that periodic maintenance be performed on this equipment. Consult your local dealer as to the proper frequency of maintenance and the availability of a maintenance contract.

IMPORTANT: Before performing any service or maintenance procedures, read all “WARNINGS” listed in these installation instructions.

Page 47

WARNING

Units with circuit breaker(s) meet requirements as a service disconnect switch, however, if access is required to the line side (covered) of the circuit breaker, this side of the breaker(s) will be energized with the breaker(s) deenergized. Contact with the line side can cause electrical shock resulting in personal injury or death.

13.1 AIR FILTER (Not Factory Installed)

Check the system filter every ninety days or as often as found to be necessary and if obstructed, clean or replace at once.

IMPORTANT: Do not operate the system without a filter in place.

13.2 INDOOR COIL - DRAIN PAN - DRAIN LINE

Inspect the indoor coil once each year for cleanliness and clean as necessary. It is necessary to remove the filter and check the return air side of the coil for debris.

IMPORTANT: Do not use caustic household drain cleaners, such as bleach, in the condensate pan or near the indoor coil. Drain cleaners will quickly damage the indoor coil.

CAUTION

13.3 THE COMFORT CONTROL2SYSTEM™ CONTROL BOARD REPLACEMENT

Verification of the Comfort Control2System™ control board failure is required before replacement. Access the diagnostic codes using a service tool or access the installer menus using the thermostat (the system must be wired as a serial communicating system to access the installer menus using the thermostat). Reference the Air Handler Diagnostic Code Table in Section 5.20. NOTE: The memory card is attached to the control box with a tether. The tether has an identification label that can be used to identify the memory card if replacement is needed.

IMPORTANT: Do not cut the tether attached to the memory card when replacing the

Comfort Control

. Reinsert the memory card into the replacement Comfort Control2.

FIGURE 38

COMFORT CONTROL2BOARD REPLACEMENT

MEMORY CARD

TETHER

Page 48

13.4 BLOWER MOTOR AND WHEEL

Inspect the blower motor and wheel for cleanliness. With the system air filter in place, it should be several years before it would become necessary to clean the blower motor and wheel.

• If it becomes necessary to remove the blower assembly from the unit, see instructions on removal and disassembly of motor, blower and heater parts.

• The blower motor and wheel may be cleaned by using a vacuum with a soft brush attachment. Remove grease with a mild solvent such as hot water and detergent. Be careful not to disturb the balance weights (clips) on the blower wheel blades. Do not drop or bend wheel as balance will be affected.

13.5 LUBRICATION

The blower motor sleeve bearings are pre-lubricated by the motor manufacturer and do not have oiling ports. Motor should be run for an indefinite period of time without additional lubrication.

13.6 BLOWER ASSEMBLY REMOVAL AND REPLACEMENT

Removing the blower assembly is not required for normal service and maintenance. Removal is necessary for replacement of components such as motor, blower wheel. After extended use, removal of the blower assembly may become necessary for a thorough cleaning of the blower motor and wheel.

WARNING

• Mark field power supply wiring (for replacement) attached to terminal block or circuit breaker(s) on blower assembly. Remove wiring from terminal block or circuit breaker(s).

• Mark low voltage control wiring (for replacement) where attached to unit control terminals on left side of blower housing.

• Remove a screw holding blower assembly to front channel of cabinet and pull blower assembly from cabinet.

• To replace blower assembly, slide blower assembly into blower deck. Make sure blower assembly engages lances in deck properly. If assembly hangs up, check to make sure top and bottom are lined up in proper locations.

• Slide blower assembly to back of cabinet and make sure it is completely engaged.

• Replace two screws holding blower assembly to front channel of cabinet. Take care not to strip screws, just snug into place.

• Replace low voltage control wiring with wire nuts and make sure wiring is to wiring diagram and a good connection has been made.

• Replace field power wiring to terminal block or circuit breaker(s) on control area of blower assembly. Make sure wires are replaced as they were, check wiring diagram if necessary. Tighten supply power wiring securely to terminals lugs.

• Make sure wiring is within cabinet and will not interfere with access door. Make sure proper separation between low voltage control wiring and field power wiring has been maintained.

• Replace blower assembly control access panel before energizing equipment.

13.7 MOTOR REPLACEMENT

With the blower assembly removed, the indoor blower motor can be removed and replaced using the following procedure:

• Remove motor leads from the motor high and low voltage plugs. Note the lead locations for ease of re-assembly.

• Loosen the set screw holding the blower wheel onto the motor shaft. The shaft extends through the blower hub so that a wrench can be used on the extended shaft to break the shaft loose if necessary. Be careful not to damage the shaft. Use a

wheel puller on the groove in the hub if necessary.

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FIGURE 39

INTERNAL MOTOR PLUG AND SOCKET

• Loosen the bolt holding the wire motor band around the motor shell and pull the motor from the motor mount. Note the motor position in the mount for re-assembly.

• To re-assemble, insert the motor shaft through the hub in the blower wheel and orient the motor to original position.

• For proper motor cooling, it is important that the motor be mounted the same as the original, as far into the blower as practical.

• The dimension from the face of the motor end plate (shaft end) to the first wire on the motor mount band around the shell should be:

DIMENSION TONNAGE CABINET SIZE

/32"1

/2"2

/2" 3, 31/2 & 4 21

/8"5 24

/2 & 2 17

/2 & 3 17

• With motor held to above position and motor lead plugs oriented to the original position (the wire connectors on the motor must point straight to the supply air end of the unit and away from the return air [filter] end of the unit). Securely tighten the bolt on the mount band to the motor shell.

• Turn the motor shaft so that the flat on the shaft is located under blower wheel setscrew, and the blower wheel is centered in the blower housing with the same distance on each side between the inlet venturi and the outside of the blower wheel.

• Re-assemble the motor wiring (high and low voltage plugs) into the motor. IMPORTANT: DO NOT FORCE POWER PLUG INTO THE MOTOR CONNECTOR

BACKWARDS. The A.C. power plug to the motor has locking tabs. It has been proven that by applying excessive force to the A.C. cable half of the connector it is possible to force the connector in backwards. It will not seat and “click” properly but will make connection. If A.C. power is applied with the connector reversed the motor will be immediately destroyed.

13.8 ECM CONTROL MODULE REPLACEMENT

Always take the following steps before replacing the control module on the end of the ECM indoor blower motor.

1. HAVE THE CORRECT REPLACEMENT MODULE. These controls are factory pro-

grammed for specific operating modes. Even though they look alike, different modules may have different CFM characteristics.

IMPORTANT: Using the wrong control module voids all product warranties and may produce unexpected results.

2. Turn off power to the equipment. Wait at least 5 minutes after disconnecting AC

power before opening the motor.

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WARNING

3. While not necessary, it may prove easier to remove the complete blower assembly from the furnace. Unplug the two cable connectors to the motor. There are latches on each connector. DO NOT PULL ON THE WIRES. TO REMOVE THE PLUG, SQUEEZE THE PIN LATCH. The plugs remove easily when properly released.

FIGURE 40

ECM MOTOR COMPONENTS

FIGURE 41

MOTOR ALIGNMENT PIN

4. Locate the two standard 1/4" hex head bolts on the flat end of the motor control module casting. Remove these bolts from the motor while holding the control module. DO NOT REMOVE TWO SCREWS WITH TORX HEADS.

5. The control module is still connected to the motor by a plug and cable. Carefully rotate the control so as to gain access to the plug on the cable end. Squeeze the release latch and gently pull the plug out of the control module. DO NOT PULL ON THE WIRES. GRIP THE PLUG ONLY.

6. The control module is now completely detached from the motor. Use an ohmmeter to measure the resistance from each motor lead (in the motor plug just removed) to the motor shell. This resistance must be greater than 100K ohms. Always measure to the unpainted motor end plate. If any motor lead fails this test DO NOT INSTALL THE NEW CONTROL MODULE.

7. Verify that the replacement control module is correct. Place the new module next to the motor and carefully insert the plug that was removed in step 5. BE SURE THE PLUG LATCHES. IT SHOULD CLICK INTO PLACE.

8. Install the new control module back on the motor. Carefully engage the alignment pin into the appropriate mating motor hole.

9. Replace the two 1/4" hex head bolts. Tighten the bolts snugly. DO NOT OVER TIGHTEN.

IMPORTANT: Before replacing the blower motor assembly, check the installation for any application fault that might have caused the motor or control module to fail. Water damage could show as corrosion on the inside or outside of the casting. If so, run a Moisture Check.

10. Install the blower motor assembly back into the furnace. Follow the manufacturer’s suggested procedures.

11. Plug the control connector into the motor. The connector is keyed. Be sure the connector is properly seated and latched.

12. Plug the control connector into the motor. The connector is keyed. Be sure the connector is properly seated and latched. OBSERVE THE PROPER ORIENTATION. DO NOT FORCE THE CONNECTOR. It plugs in very easily when properly oriented.

CAUTION

Reversing the 5-pin connector on the ECM motor causes immediate failure of the control module.

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13. Final installation check. Be sure the motor is installed as follows. a. Set the motor into the blower housing as originally provided from the manufactur-

er. b. Do not allow the motor mount to cover the motor vent openings. c. Do not attach the motor mount to the motor electronics compartment. d. The motor connectors should be straight down. e. Have appropriate drip loops formed in the harnesses.

14. Restore 230 volt power to the system. Verify that the new motor control module works properly.

13.9 BLOWER WHEEL REPLACEMENT

With the blower assembly removed and the motor assembly removed (see above instructions), remove the two screws holding the blower wrap (cutoff) to the blower sides.

IMPORTANT: It is not necessary to remove heating ele ment(s), if provided, to remove the blower wheel.

• With wrap (cutoff) screws removed, cut off end of blower wrap will spring up. Lifting

wrap blower wheel is removed through the discharge opening in the blower housing.

• To replace, make sure wheel is oriented properly with hub to the opposite side from

the motor. Lift blower wrap and insert blower wheel through discharge opening in the blower housing.

• Hold blower wrap down into position and replace two screws holding blower wrap to

blower sides.

• See motor replacement and blower assembly instructions for remaining assembly

procedure.

14.0 REPLACEMENT PARTS

Any replacement part used to replace parts originally supplied on equipment must be the same as or an approved alternate to the original part supplied. The manufacturer will not be responsible for replacement parts not designed to physically fit or operate within the design parameters the original parts were selected for.

These parts include but are not limited to: Circuit breakers, heater controls, heater limit controls, heater elements, motor, motor capacitor, blower relay, control transformer, blower wheel, filter, indoor coil and sheet metal parts.

When ordering replacement parts, it is necessary to order by part number and include with the order the complete model number and serial number from the unit data plate. (See parts list for unit component part numbers).

15.0 ACCESSORIES - KITS - PARTS

• Combustible Floor Base RXHB-17, RXHB-21, RXHB-24 (for standard units) for

downflow applications, see section of this manual covering combustible floor base.

Model Cabinet Size Base Model Number

17 RXHB-17 21 RXHB-21 24 RXHB-24

Combustible Floor

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• External Filter Base RXHF- (See Figure 42)

Model Cabinet Size Filter Size Part Number AB

17 16 x 20 [406 x 508] RXHF-17 15.70 17.50 21 20 x 20 [508 x 508] RXHF-21 19.20 21.00 24 25 x 20 [635 x 508] RXHF-24 22.70 25.50

Accommodate

1” or 2”

filter

FIGURE 42

EXTERNAL FILTER BASE: RXHF-

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• External Filter Rack: RXHF-B (See Figure 43)

Model Cabinet Size Filter Size Part Number AB

17 16 x 20 RXHF-B17 16.90 20.77 21 20 x 20 RXHF-B21 20.40 20.77 24 25 x 20 RXHF-B24 25.00 21.04

Accommodate

1” filter

FIGURE 43

EXTERNAL FILTER RACK: RXHF- B17, B21, B24

➦

1.50

➦

• Horizontal Adapter Kit RXHH-

This horizontal adapter kit is used to convert Upflow/Downflow only models to horizontal flow. See the following table to order proper horizontal adapter kit.

Coil Model

Horizontal Adapter Kit Horizontal Adapter Kit

Model Number (Single Qty.) Model Number (10-pak Qty.)

2414 RXHH-A01 RXHH-A01x10 2417 RXHH-A02 RXHH-A02x10

3617/3621 RXHH-A03 RXHH-A03x10

3821/4821/4824 RXHH-A04 RXHH-A04x10

6024 RXHH-A05 RXHH-A05x10

• Auxiliary Horizontal Unit Overflow Pan Accessory RXBM-

Nominal Auxiliary Horizontal Overflow

Cooling Pan Accessory

Capacity Ton Model Number

/2 - 3 RXBM-AC48

/2 - 5 RXBM-AC61

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FIGURE 44

COMFORT CONTROL2SYSTEM™ AIR HANDLER WIRING DIAGRAM (-)H2V

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Page 56

56 CM 0214

Rheem RH1V3617STANJA, RH1V4824STANJA, RH1V4821STANJA, RH1V6024STANJA, RH2V2421HTACJA Installation Instructions Manual

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