Rheem RHSL-HM2417AA, RHSL-HM4821AA, RHSL-HM3017AA, RHSL-HM4221AA, RHLL-HM2417AA Installation Instructions Manual

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Page 1

WARNING

ISO 9001:2008

INSTALLATION INSTRUCTIONS

AIR HANDLERS

FEATURING INDUSTRY STANDARD R-410A REFRIGERANT:

RHLL High Efficiency RHSL Standard Efficiency

▲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.

SUPERSEDES 92-20521-32-14

92-20521-32-15

Page 2

TABLE OF CONTENTS

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

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

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

2.2 Receiving. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Model Number Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.4A Available Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.5 Dimensions and Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.0 APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 Vertical Upflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Vertical Downflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3 Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

3.5 Installation in Mobile/Manufactured Homes. . . . . . . . . . . . . . . . . . . . . . . . . 13

4.0 ELECTRICAL WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5 Blower Motor Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5A Blower Motor Electrical Data: (-)HSL. . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5B Blower Motor Electrical Data: (-)HLL. . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.6 Electric Heat Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.6A Electric Heat Electrical Data: (-)HSL . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.6B Electric Heat Electrical Data: (-)HLL . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.6C Heater Kit Supplemental Information . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.0 AIRFLOW PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.1 Airflow Operating Limits (-)HSL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.2 240V Airflow Performance Data (-)HSL. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3 115/208/480V Airflow Performance Data (-)HSL . . . . . . . . . . . . . . . . . . . . . 27

5.4 115/208/240V Airflow Performance Data (-)HLL . . . . . . . . . . . . . . . . . . . . . 29

6.0 DUCTWORK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.1 TEV Sensing Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.2 Condensate Drain Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.3 Duct Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.0 AIR FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.0 SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.1 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.2 Heating (electric heat only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.3 Heating (heat pump) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.4 Blower Time Delay (heating or cooling). . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.5 Defrost (defrost heat control). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.6 Emergency Heat (heating heat pump). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

9.7 Room Thermostat (anticipator setting). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

10.0 CALCULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

10.1 Calculating Temperature Rise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

10.2 Calculating BTUH Heating Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

10.3 Calculating Airflow CFM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

10.4 Calculating Correction Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

11.0 PRE-START CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

12.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

12.1 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

12.2 Indoor Coil/Drain Pan/Drain Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

12.3 Blower Motor & Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

12.4 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

12.5 Blower Assembly Removal and Replacement. . . . . . . . . . . . . . . . . . . . . . . 37

12.6 Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

12.7 Blower Wheel Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

13.0 REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

14.0 ACCESSORIES - KITS - PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Page 3

(SEE SECTION 4.0:

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.

WARNING

If removal of the blower assembly is required, all disconnect switches supplying power to the equipment 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.

WARNING

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

ELECTRICAL WIRING)

(SEE SECTION 12.5: BLOWER ASSEMBLY REMOVAL & REPLACEMENT)

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

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.

WARNING (SEE SECTION 3.2: VERTICAL DOWNFLOW)

The RXHB-17, RXHB-21 or RXHB-24 combustible floor base is required when some units with electric heat 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 See the accessory section in this manual for combustible floor base RXHB.

for units requiring a combustible floor base.

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 12.0: 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 5.0: 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.

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 California’s OEHHA (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

WARNING (SEE SECTION 12.6: MOTOR REPLACEMENT)

To avoid electrical shock which can result in personal injury or death, use only the screws furnished in the motor shell mounting holds. Screws are #8-18 x .25 in. long blunt nose thread forming. Screws longer than 1/4 in. may contact the motor winding.

WARNING (SEE SECTION 7.0: AIR FILTER)

Do not operate the system without filters. A portion of the dust entrained in the air may temporarily lodge in the duct runs and at the supply registers. Any circulated dust particles could be heated and charred by contact with the air handler elements. This residue could soil ceilings, walls, drapes, carpets and other articles in the house.

Soot damage may occur with filters in place, when certain types of candles, oil lamps or standing pilots are burned.

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 opening of a downflow unit can cause a fire resulting in property damage, personal injury or death.

Exceptions to downflow warnings:

• Installations on concrete floor slab with supply air plenum and ductwork completely encased in not less than 2 inches of concrete (See NFPA 90B).

CAUTION (SEE SECTION 3.3: HORIZONTAL)

Horizontal units must be configured for right hand air supply or left 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 2.1: RECEIVING)

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 for auxiliary horizontal overflow pan RXBM.

NOTICE

When used in 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

Page 5

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 carries the cooled or heated air. To maintain efficiency, comfort and good indoor air quality,

FIGURE 1

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

▲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 exit 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.

WARNING

NOTICE

Page 6

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.

NOTICE

2.2 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., Batterysmarch 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.

2.3 CLEARANCES

• 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 fol-

lowing table should be used to determine these requirements.

Model Cabinet Size 17 21 24

Maximum 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 connec-

tions. 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.

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

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

or less than the values listed in the table do

Page 7

2.4 MODEL NUMBER EXPLANATION

FIGURE 2

MODEL NUMBER EXPLANATION

(-) H S L — HM 18 17 J A

DESIGN VARIATION

A = 1STDESIGN

VOLTAGE

A = 115/1/60 D = 480V-3-60 J = 208/240/1/60

CABINET SIZE

17 = 17.5" (600 - 1200 CFM) 21 = 21" (1200 - 1600 CFM) 24 = 24.5" (1600 -1800 CFM)

CAPACITY

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

HM = A/C OR HP MULTI-POSITION

HM = (Vertical Upflow/Horizontal Left is the factory configuration)

REFRIGERANT

L = R-410A

TRADE BRAND

(-) H L L — HM 24 17 J A

HM = A/C OR HP MULTI-POSITION

HM = (Vertical Upflow/Horizontal Left is the factory configuration)

S = STANDARD MODEL (PSC MOTOR)

CLASSIFICATION

H = AIR HANDLER

DESIGN VARIATION

A = 1STDESIGN

VOLTAGE

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

CABINET SIZE

17 = 17.5" (600 - 1200 CFM) 21 = 21" (3821 = 1000 - 1200 CFM) 21 = 21" (4821 = 1400 - 1600 CFM) 24 = 24.5" (1600 - 1800 CFM)

CAPACITY

24 = 18,000 / 24,000 BTU/H 36 = 30,000 / 36,000 BTU/H 38 = 30,000 / 36,000 / 42,000 BTU/H 48 = 42,000 / 48,000 BTU/H 60 = 60,000 BTU/H

REFRIGERANT

L = R-410A

L = HIGH EFFICIENCY (X-13 MOTOR)

CLASSIFICATION

H = AIR HANDLER

TRADE BRAND

Page 8

2.4A AVAILABLE MODELS

AVAILABLE MODELS AT A VOLTAGE

(-)HSL-HM1817AA (-)HSL-HM2417AA (-)HSL-HM3017AA (-)HSL-HM3617AA (-)HSL-HM4221AA (-)HSL-HM4821AA

AVAILABLE MODELS AT J VOLTAGE

(-)HLL-HM2417JA (-)HLL-HM3617JA (-)HLL-HM4821JA (-)HLL-HM4824JA (-)HLL-HM6024JA (-)HLL-HM3821JA

AVAILABLE MODELS AT D VOLTAGE

(-)HSL-HM3617DA (-)HSL-HM4221DA (-)HSL-HM4821DA (-)HSL-HM4824DA (-)HLL-HM6024DA (-)HSL-HM6024DA

(-)HLL-HM2417AA (-)HLL-HM3617AA (-)HLL-HM4821AA (-)HLL-HM4824AA (-)HLL-HM6024AA (-)HLL-HM3821AA

(-)HSL-HM1817JA (-)HSL-HM2417JA (-)HSL-HM3017JA (-)HSL-HM3617JA (-)HSL-HM3621JA (-)HSL-HM4221JA

(-)HSL-HM4821JA (-)HSL-HM4824JA (-)HSL-HM6024JA

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 (208/240V) single phase air handler is designed to be used with single or

three phase 208/240V 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.

• The air handlers are shipped from the factory with the proper indoor coil installed, and

cannot be ordered without a coil.

• The air handlers do not have an internal filter rack. An external filter rack or other

means of filtration is required.

Page 9

2.5 DIMENSIONS & WEIGHTS

FIGURE 3

DIMENSIONS AND WEIGHTS

ELECTRICAL CONNECTIONS MAY EXIT TOP OR EITHER SIDE

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

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

Return Air Opening Dimensions

Model

Cabinet Size

17 157⁄8 193⁄4 21 193⁄8 193⁄4 24 227⁄8 193⁄4

Return Air Return Air Opening

Opening Width Depth/Length

(Inches) (Inches)

SUPPLY AIR

105/16

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

FLANGES ARE PROVIDED

FOR FIELD INSTALLATION

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)

DIMENSIONAL DATA

MODEL

SIZE

RHLL &

RHSL

1817/2417

3017/3617

3621

3821

4221/4821

4824

6024

REFRIGERANT

CONNECTIONS

SWEAT (IN.) [MM] ID

LIQUID VAPOR

/8"

[9.53]

/8"

[9.53]

/8"

[9.53]

/8"

[9.53]

/8"

[9.53]

/8"

[9.53]

/8"

[9.53]

/4"

[19.05]

/4"

[19.05]

/4"

[19.05]

/8"

[22.23]

/8"

[22.23]

/8"

[22.23]

/8"

[22.23]

UNIT HEIGHT IN. [mm]

421/2"

[1080]

/2"

[1080]

/2"

[1080]

501/2"

[1283]

/2"

[1283]

/2"

[1410]

/2"

[1410]

191/2

RETURN AIR OPENING

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

UNIT WIDTH “W” IN.

[mm]

/2"

[444.5]

/2"

[444.5]

21"

[533.4]

21"

[533.4]

21"

[533.4]

/2"

[622.3]

/2"

[622.3]

SUPPLY

DUCT

“A” IN.

[mm]

16"

[406.4]

16"

[406.4]

/2"

[495.3]

/2"

[495.3]

/2"

[495.3]

23"

[581.2]

23"

[581.2]

AIRFLOW

COIL (NOM.) [L/s]

LO HI

600

[283] 1000

[472] 1200

[566] 1000

[472] 1400

[661] 1600

[755] 1800

[850]

800

[378] 1200

[566]

—

1200 [566]

1600 [755]

—

2111/16

A-1038-01

UNIT WEIGHT / SHIPPING

WEIGHT (LBS.) [kg]

UNIT WITH

COIL (MAX. kW.)

82/96

[37.1]/[43.5]

92/106

[41.7]/[48.0]

97/112

[43.9]/[50.8]

150/166

[68.0]/[75.2]

150/166

[68.0]/[75.2]

162/180

[73.4]/[81.6]

181/198

[82.1]/[89.8]

Page 10

3.0 APPLICATIONS

3.1 VERTICAL UPFLOW

• Vertical Upflow is the factory configuration for all models (see Figure 3).

• If a side return air opening is required, field fabricate a return air plenum with an opening large enough to supply unit and strong enough to support unit weight.

• 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.

FIGURE 4

DIMENSIONS FOR FRONT CONNECT COIL

515/16

41/8

31/16

13/16

11/8

11/16

13/8

213/16

51/4

53/8

3.2 VERTICAL DOWNFLOW

Conversion to Vertical Downflow: A vertical upflow unit may be converted to vertical downflow. Remove the door and indoor coil and reinstall 180° from original position (see Figure 5).

A second set of coil rails must be field installed for vertical down-flow and horizontal right applications. Fastener clearance holes will need to be drilled in the cabinet sides (proper hole locations are marked with “dimpled” for this purpose). Note that the shorter (no notch) coil rail must be mounted on the left-hand side to provide clearance for the drainpan condensate connection boss.

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 5).

- 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.

- 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.

Page 11

FIGURE 5

ROTATING CIRCUIT BREAKER

- 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.

• RXHB combustible floor base is used for all unit sizes. Unit must be centered on combustible base in the width dimension (143/8”). (See Section 14.0 for more information on the combustible floor base.)

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 some units with electric heat 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.

3.3 HORIZONTAL

Horizontal left is the default factory configuration for “HM” (airflow direction) units. Conversion to Horizontal: A vertical upflow unit (AU) may be converted to horizontal by

removing the indoor coil and installing horizontal drain pan on coil as shown for right hand or left hand air supply. Reinstall coil in unit as shown for right or left hand air supply. See Figures 6 & 7. (See Section 14.0 for more information on the Horizontal Adapter Kit.)

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

• A second set of coil rails must be field installed for vertical down-flow and horizontal right applications. 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 6, 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 14.0: Accessories - Kits - Parts.)

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

Page 12

FIGURE 6

VERTICAL DOWNFLOW & HORIZONTAL RIGHT APPLICATIONS

ENSURE THE RETAIN-

ING CHANNEL IS FULLY

ENGAGED WITH THE

RAILS

DETAIL A

COIL RAIL.

FIGURE 7

INDOOR COIL AND DRAIN PAN SET-UP

STRAPS

HORIZONTAL ADAPTER

FRONT WATER

CONNECTION

HORIZONTAL

CONNECTION

KIT

CATCHER

VAPOR LINE

AUXILIARY

DRAIN

PRIMARY

DRAIN

UPFLOW/DOWNFLOW

DRAIN CONNECTION

AUXILIARY

LIQUID LINE CONNECTION

REAR WATER CATCHER

TOP AIR STOP

VERTICAL DRAIN PAN

A-1037-01

CAUTION

Conversion in Horizontal Direction: Horizontal left-hand supply can be changed to hori-

zontal right-hand supply by removing the indoor coil and reinstalling 180° from original. (See Figure 5.)

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

Page 13

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

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

⁄2 long. 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

⁄16 lag

FIGURE 8

ST-A-1193-01

Page 14

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 30/60 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 in unit control compartment.

/8”, 13/32”,

4.2 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. For lengths longer than 100 ft., 16 Awg. wire should be used.

• Low voltage control connections are made to low voltage pigtails extending from top of air handler (upflow position - see Figure 3). Connections for control wiring are made with wire nuts. Control wiring knockouts (5/8 and 7/8) are also provided on the right and left side of the unit for side connection.

• See wiring diagrams attached to indoor and outdoor sections to be connected, or control wiring diagram booklet supplied with outdoor heat pump section for wiring connection.

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

4.3 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.

Page 15

4.4 ELECTRICAL WIRING

POWER WIRING

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

• Supply wiring must be 75°C minimum copper conductors only.

• See electrical data for product Ampacity rating and Circuit Protector requirement.

GROUNDING

• This product must be sufficiently grounded in accordance with National Electrical Code (C.E.C. in Canada) and any applicable local ordinance.

• A grounding lug is provided.

4.5 ELECTRICAL DATA – BLOWER MOTOR ONLY – NO ELECTRIC HEAT

4.5A Electrical Data – Blower Motor Only – No Electric Heat: (-)HSL

PHASE*

1817 1/5 1075 2 2.3 3.0 15 2417 1/5 1075 2 3.8 5.0 15 3017 3617 1/3 1075 2 6.1 8.0 15 4221 1/2 1075 2 7.9 10.0 15 4821 3/4 1075 2 8.4 11.0 15

1817 1/5 1075 2 1.7 3.0 15 2417 1/5 1075 2 1.7 3.0 15 3017

3617/3621 1/3 1075 2 2.5 4.0 15

4221 1/2 1075 2 5.2 7.0 15

4821/4824 3/4 1075 2 5.2 7.0 15

6024 208/240 3 60 3/4 1075 2 5.2 7.0 15 3617 1/3 1075 2 1.4 2.0 15

4221

4821/4824 3/4 1075 2 2.2 3.0 15

6024 3/4 1075 2 2.2 3.0 15

115 1 60

208/240 1 & 3 60

480 3 60

HPMODEL VOLTAGE HERTZ RPM SPEEDS

1/4 1075 2 4.7 6.0 15

1/4 1075 2 2.5 4.0 15

1/2 1075 2 2.2 3.0 15

CIRCUIT

AMPS.

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTOR

4.5B Electrical Data – Blower Motor Only – No Electric Heat: (-)HLL

MODEL

VOLTAGE HERTZ HP RPM SPEEDS

PHASE*

CIRCUIT

AMPS.

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTOR

2417 1/3 300-1100 4 1.6 2 15

3617/3621 1/2 300-1100 4 2.8 4 15

208/240 1 & 3 60

3821/4821/4824 3/4 300-1100 4 4.0 5 15

6024 3/4 300-1100 4 4.6 6 15 2417 1/3 300-1100 4 4.8 6 15

3617/3621 1/2 300-1100 4 6.8 9 15

115 1 60

3821/4821/4824 3/4 300-1100 4 9.3 11 15

6024 3/4 300-1100 4 9.3 11 15 6024 480 3 60 3/4 300-1100 4 3.2 4.0 15

*Blower motors are all single phase motors.

Page 16

4.6 ELECTRICAL DATA – WITH ELECTRIC HEAT

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

4.6A ELECTRICAL DATA – WITH ELECTRIC HEAT: (-)HSL

AIR HANDLER

MODEL

(-)HSL RXBH-1724A13J 9.4/12.5 1/60 3-4.17 SINGLE 45.1/52.1 1.7 59/68 60/70

1817 3.1/4.2 1/60 1-4.17 MULTIPLE CKT 1 15.0/17.4 1.7 21/24 25/25 2417

(-)HSL

3017 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 2.5 68/79 70/80 3617 3.6/4.8 1/60 1-4.8 MULTIPLE CKT 1 17.3/20.0 2.5 25/29 25/30

(-)HSL

3621 RXBH-1724A18J 12.8/17.0 1/60 4-4.26 SINGLE 61.6/70.8 2.5 81/92 90/100

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

HEATER

MODEL

NO.

RXBH-1724?03J 2.25/3.0 1/60 1-3.0 SINGLE 10.8/12.5 1.7 16/18 20/20 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 1.7 24/28 25/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 1.7 35/40 35/40 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 1.7 46/53 50/60

RXBH-1724A13J RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 1.7 21/24 25/25

RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 1.7 28/31 30/35 RXBH-1724A13C 9.4/12.5 3/60 3-4.17 SINGLE 26.1/30.1 1.7 35/40 35/40

RXBH-1724?03J 2.25/3.0 1/60 1-3.0 SINGLE 10.8/12.5 2.5 17/19 20/20 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 2.5 25/29 25/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 2.5 36/41 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 2.5 47/54 50/60

RXBH-1724A13J 9.4/12.5 1/60 3-4.17 SINGLE 45.1/52.1 2.5 60/69 60/70 RXBH-1724A13J

RXBH-1724A15J RXBH-1724A18J 12.8/17.0 1/60 3-5.68 SINGLE 61.6/70.8 2.5 81/92 90/100 RXBH-1724A18J RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 2.5 22/25 25/25

RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 2.5 29/32 30/35 RXBH-1724A13C 9.4/12.5 3/60 3-4.17 SINGLE 26.1/30.1 2.5 36/41 40/45 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 2.5 41/47 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-5.68 SINGLE 35.5/41.0 2.5 48/55 50/60

RXBH-17A07D 7.2 3/60 2-3.6 SINGLE 8.7 1.4 13 15 RXBH-17A10D 9.6 3/60 3-3.2 SINGLE 11.6 1.4 17 20 RXBH-17A15D 14.4 3/60 3-4.8 SINGLE 17.3 1.4 24 25

RXBH-17A18D 17 3/60 3-5.68 SINGLE 20.4 1.4 28 30 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 2.5 25/29 25/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 2.5 36/41 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 2.5 47/54 50/60

RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 2.5 68/79 70/80 RXBH-1724A15J

RXBJ-1724A18J

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 2.5 22/25 25/25 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 2.5 29/32 30/35 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 2.5 41/47 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-5.68 SINGLE 35.5/41.0 2.5 48/55 50/60

RXBH-24A07D 7.2 3/60 2-3.6 SINGLE 8.7 1.4 13 15

RXBH-24A10D 9.6 3/60 3-3.2 SINGLE 11.6 1.4 17 20

RXBH-24A15D 14.4 3/60 3-4.8 SINGLE 17.3 1.4 24 25

RXBH-24A18D 17 3/60 3-5.68 SINGLE 20.4 1.4 28 30

HEATER

(208/240V➀)

(480V)

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

3.1/4.2 1/60 1-4.17 MULTIPLE CKT 1 15.0/17.4 2.5 22/25 25/25

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

4.3/5.7 1/60 1-5.68 MULTIPLE CKT 1 20.5/23.6 2.5 29/33 30/35

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

3.6/4.8 1/60 1-4.8 MULTIPLE CKT 1 17.3/20.0 2.5 25/29 25/30

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 2.5 42/48 45/50

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

PH/HZ

NO.

ELEMENTS

- KW PER

TYPE SUPPLY

CIRCUIT

SINGLE CIRCUIT

MULTIPLE CIRCUIT

CIRCUIT

AMPS.

MOTOR

AMPACITY

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTION

Page 17

4.6A ELECTRICAL DATA – WITH ELECTRIC HEAT: (-)HSL - continued

AIR HANDLER

MODEL

(-)HSL

4221 RXBH-24A25J 18.0/24.0 1/60 6-4.0 SINGLE 86.4/99.9 5.2 115/132 125/150 4821 6.0/8.0 1/60 2-4.0 MULTIPLE CKT 1 28.8/33.3 5.2 43/49 45/50 4824

(-)HSL

6024 RXBH-24A20J 14.4/19.2 1/60 4-4.8 SINGLE 69.2/80 5.2 93/107 100/110

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

HEATER

MODEL

NO.

RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 5.2 29/32 30/35 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 5.2 39/44 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 5.2 50/57 50/60 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 5.2 72/82 80/90

RXBH-1724A15J RXBH-1724A18J 12.8/17 1/60 4-4.26 SINGLE 61.6/70.8 5.2 84/95 90/100

RXBH-1724A18J

RXBH-24A20J 14.4/19.2 1/60 4-4.8 SINGLE 69.2/80 5.2 93/107 100/110 RXBH-24A20J

RXBH-24A25J

(4-ton only)

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 5.2 26/29 30/30 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 5.2 32/36 35/40 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 5.2 44/50 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-2.84 SINGLE 35.6/41.0 5.2 51/58 60/60

RXBH-24A20C* 14.4/19.2 3/60 3-3.2 SINGLE 40.0/46.2 5.2 57/65 60/70

RXBH-24A20C

RXBH-24A25C* 18.0/24.0 3/60 6-4.0 SINGLE 50.0/57.8 5.2 69/79 70/80

RXBH-24A25C

(4-ton only)

RXBH-24A07D 7.2 3/60 2-3.6 SINGLE 8.7 2.2 14 15 RXBH-24A10D 9.6 3/60 3-3.2 SINGLE 11.6 2.2 18 20 RXBH-24A15D 14.4 3/60 3-4.8 SINGLE 17.3 2.2 25 25 RXBH-24A18D 17 3/60 3-5.68 SINGLE 20.4 2.2 29 30 RXBH-24A20D 19.2 3/60 6-3.2 SINGLE 23.2 2.2 32 35

RXBH-24A25D

(4-ton only)

RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 5.2 39/44 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 5.2 50/57 50/60 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 5.2 72/82 80/90

RXBH-1724A15J RXBH-1724A18J 12.8/17.0 1/60 4-4.26 SINGLE 61.6/70.8 5.2 84/95 90/100 RXBH-1724A18J

RXBH-24A20J RXBH-24A25J 18.0/24.0 1/60 6-4.0 SINGLE 86.4/99.9 5.2 115/132 125/150

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

RXBH-24A30J 21.6/28.8 1/60 6-4.8 SINGLE 103.8/120 5.2 137/157 150/175

RXBH-24A30J 7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0 44/50 45/50

HEATER

(208/240V➀)

(480V)

3.6/4.8 1/60 1-4.8 MULTIPLE CKT 1 17.3/20.0 5.2 29/32 30/35

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

6.4/8.5 1/60 2-4.26 MULTIPLE CKT 1 30.8/35.4 5.2 45/51 45/60

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

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 5.2 50/57 50/60

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

6.0/8.0 1/6 2-4.0 MULTIPLE CKT 2 28.8/33.3 0.0 36/42 40/45

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

7.2/9.6 3/60 3-3.2 MULTIPLE CKT 1 20.0/23.1 5.2 32/36 35/40

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

9.0/12.0 3/60 3-4.0 MULTIPLE CKT 1 25.0/28.9 5.2 38/43 40/45

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

24.0 3/60 6-4.0 SINGLE 28.8 2.2 39 40

3.6/4.8 1/60 1-4.8 MULTIPLE CKT1 17.3/20.0 5.2 29/32 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 5.2 45/51 45/60

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 5.2 50/57 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 5.2 43/49 45/50

6.0/8.0 1/60 2-4.0 MULTIPLE CKT 3 28.8/33.3 0 36/42 40/45

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 5.2 50/57 50/60

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

PH/HZ

NO.

ELEMENTS

- KW PER

TYPE SUPPLY

CIRCUIT

SINGLE CIRCUIT

MULTIPLE CIRCUIT

CIRCUIT

AMPS.

MOTOR

AMPACITY

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTION

Page 18

4.6A ELECTRICAL DATA – WITH ELECTRIC HEAT: (-)HSL - continued

AIR HANDLER

MODEL

(-)HSL RXBH-24A25C* 18.0/24.0 3/60 6-4.0 SINGLE 50.0/57.8 5.2 69/79 70/80

6024 9.0/12.0 3/60 3-4.0 MULTIPLE CKT 1 25.0/28.9 5.2 38/43 40/45

• ? Heater Kit Connection Type A=Breaker B=Terminal Block C=Pullout Disconnect ➀ D Voltage = 480 Volts.

*Values only. No single point kit available.

NOTES:

• 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.

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

• Largest motor load is included in single circuit or circuit 1 of multiple circuits.

• Heater loads are balanced on 3 phase models with 3 or 6 heaters only.

• No electrical heating elements are permitted to be used with A Voltage (115V) air handler.

• J Voltage (208/240V) single phase air handler is designed to be used with single or three phase 208/240V electric heaters. In the case of connecting 3 phase power to air handler terminal block without the heater, bring only two leads to terminal block, cap, insulate and fully secure the third lead.

• Do not use 480V electrical heaters on 208/240V air handler.

• 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.

HEATER

MODEL

NO.

RXBH-24A20C* 14.4/19.2 3/60 3-3.2 SINGLE 40.0/46.2 5.2 57/65 60/70

RXBH-24A20C

RXBH-24A25C

RXBH-24A30C* 21.6/28.8 3/60 6-4.8 SINGLE 60.0/69.4 5.2 82/94 90/100

RXBH-24A30C RXBH-24A07D 7.2 3/60 2-3.6 SINGLE 8.7 2.2 14 15

RXBH-24A10D 9.6 3/60 3-3.2 SINGLE 11.6 2.2 18 20 RXBH-24A15D 14.4 3/60 3-4.8 SINGLE 17.3 2.2 25 25 RXBH-24A18D 17 3/60 3-5.68 SINGLE 20.4 2.2 29 30 RXBH-24A20D 19.2 3/60 6-3.2 SINGLE 23.2 2.2 32 35 RXBH-24A25D 24.0 3/60 6-4.0 SINGLE 28.8 2.2 39 40

RXBH-24A30D* 28.8 3/60 6-4.8 SINGLE 34.6 2.2 46 50

HEATER

(208/240V➀)

(480V)

7.2/9.6 3/60 3-3.2 MULTIPLE CKT 1 20.0/23.1 5.2 32/36 35/40

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 2 25.0/28.9 0 32/37 35/40

10.8/14.4 3/60 3-4.8 MULTIPLE CKT 1 30.0/34.7 5.2 44/50 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

MAXIMUM

CIRCUIT

PROTECTION

Page 19

4.6B ELECTRICAL DATA – WITH ELECTRIC HEAT: (-)HLL

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

AIR HANDLER

MODEL

(-)HLL RXBH-1724A13J 9.4/12.5 1/60 3-4.17 SINGLE 45.1/52.1 1.6 59/68 60/70

2417 3.1/4.2 1/60 1-4.17 MULTIPLE CKT 1 15.0/17.4 1.6 21/24 25/25

(-)HLL

3617 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 2.8 69/79 70/80

(-)HLL RXBH-24A20J 14.4/19.2 1/60 4-48 SINGLE 69.2/80 4.0 92/105 100/110

4821 7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 4.0 49/55 50/60

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

HEATER

MODEL

NO.

RXBH-1724?03J 2.25/3.0 1/60 1-3.0 SINGLE 10.8/12.5 1.6 16/18 20/20 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 1.6 24/27 25/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 1.6 35/40 35/40 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 1.6 46/52 50/60

RXBH-1724A13J

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 1.6 21/24 25/25 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 1.6 27/31 30/35 RXBH-1724A13C 9.4/12.5 3/60 3-4.17 SINGLE 26.1/30.1 1.6 35/40 35/40

RXBH-1724?03J 2.25/3.0 1/60 1-3.0 SINGLE 10.8/12.5 2.8 19/20 20/20 RXBH-1724?05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 2.8 26/29 30/30 RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 2.8 36/41 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 2.8 47/54 50/60 RXBH-1724A13J 9.4/12.5 1/60 3-4.17 SINGLE 45.1/52.1 2.8 60/69 60/70

RXBH-1724A13J

RXBH-1724A15J RXBH-1724A18J 12.8/17.0 1/60 3-5.68 SINGLE 61.6/70.8 2.8 81/92 90/100 RXBH-1724A18J

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 2.8 23/26 25/30 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 2.8 29/33 30/35 RXBH-1724A13C 9.4/12.5 3/60 3-4.17 SINGLE 26.1/30.1 2.8 37/42 40/45 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 2.8 41/47 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-5.68 SINGLE 35.5/41.0 2.8 48/55 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 49/53 50/60 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 4.0 70/80 70/80

RXBH-1724A15J RXBH-1724A18J 12.8/17.0 1/60 4-4.26 SINGLE 61.6/70.8 4.0 82/94 90/100

RXBJ-1724A18J

RXBH-24A20J 7.2/9.6 1/60 2-4.8 MULTIPLE CKT 2 34.6/40.0 0.0 44/50 45/50 RXBH-24A25J 18.0/24.0 1/60 6-4.0 SINGLE 86.4/99.9 4.0 113/130 125/150

RXBH-24A25J

(4-ton only)

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

RXBH-24A20C

RXBH-24A25C* 18.0/24.0 3/60 6-4.0 SINGLE 50.0/57.8 4.0 68/77 70/80

RXBH-24A25C

(4-ton only)

HEATER

(208/240V)

(480V)

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

3.1/4.2 1/60 1-4.17 MULTIPLE CKT 1 15.0/17.4 2.8 23/26 25/30

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

3.6/4.8 1/60 1-4.8 MULTIPLE CKT 1 17.3/20.0 2.8 26/29 30/30

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

4.3/5.7 1/60 1-5.68 MULTIPLE CKT 1 20.5/23.6 2.8 29/33 30/35

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

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

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

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

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

6.0/8.0 1/60 2-4.0 MULTIPLE CKT 1 28.8/33.3 4.0 41/47 45/50

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

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

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

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 20

4.6B Electrical Data – With Electric Heat: (-)HLL - continued

AIR HANDLER

MODEL

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

4824 6.0/8.0 1/60 2-4.0 MULTIPLE CKT 3 28.8/33.3 0 36/42 40/45 6024 RXBH-24A30J 21.6/28.8 1/60 6-4.8 SINGLE 103.8/120. 4.6 136/156 150/175

(-)HLL RXBH-24A15D 14.4 3/60 3-4.8 SINGLE 17.3 3.2 26 30

6024 RXBH-24A18D 17.0 3/60 3-5.68 SINGLE 20.4 3.2 30 30

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

HEATER

MODEL

NO.

RXBH-1724?07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 4.6 39/44 40/45 RXBH-1724?10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 4.6 49/56 50/60 RXBH-1724A15J 10.8/14.4 1/60 3-4.8 SINGLE 51.9/60.0 4.6 71/81 80/90

RXBH-1724A15J RXBH-1724A18J 12.8/17 1/60 4-4.26 SINGLE 61.6/70.8 4.6 83/95 90/100 RXBH-1724A18J

RXBH-24A20J 14.4/19.2 1/60 4-4.8 SINGLE 69.2/80 4.6 93/106 100/110 RXBH-24A20J RXBH-24A25J 18.0/24.0 1/60 6-4.0 SINGLE 86.4/99.9 4.6 114/131 125/150

RXBH-24A30J

(5-ton only)

RXBH-1724A07C 5.4/7.2 3/60 3-2.4 SINGLE 15.0/17.3 4.6 25/28 25/30 RXBH-1724A10C 7.2/9.6 3/60 3-3.2 SINGLE 20.0/23.1 4.6 31/35 35/35 RXBH-1724A15C 10.8/14.4 3/60 3-4.8 SINGLE 30.0/34.6 4.6 44/49 45/50 RXBH-1724A18C 12.8/17.0 3/60 3-2.84 SINGLE 35.6/41.0 4.6 51/57 60/60

RXBH-24A20C* 14.4/19.2 3/60 3-3.2 SINGLE 40.0/46.2 4.6 56/64 60/70

RXBH-24A20C

RXBH-24A25C* 18.0/24.0 3/60 6-4.0 SINGLE 50.0/57.8 4.6 69/78 70/80

RXBH-24A25C

RXBH-24A30C* 21.6/28.8 3/60 6-4.8 SINGLE 60.0/69.4 4.6 81/93 90/100

RXBH-24A30C

(5-ton only)

RXBH-24A07D 7.2 3/60 2-3.6 SINGLE 8.7 3.2 15 15 RXBH-24A10D 9.6 3/60 3-3.2 SINGLE 11.6 3.2 19 20

RXBH-24A20D 19.2 3/60 6-3.2 SINGLE 23.2 3.2 33 35 RXBH-24A25D 24.0 3/60 6-4.0 SINGLE 28.8 3.2 40 40 RXBH-24A30D 28.8 3/60 6-4.8 SINGLE 34.6 3.2 48 50

HEATER

(208/240V)

(480V)

3.6/4.8 1/60 1-4.8 MULTIPLE CKT1 17.3/20.0 4.6 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 4.6 45/50 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 4.6 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 4.6 42/48 45/50

7.2/9.6 1/60 2-4.8 MULTIPLE CKT 1 34.6/40.0 4.6 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

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

7.2/9.6 3/60 3-3.2 MULTIPLE CKT 1 20.0/23.1 4.6 31/35 35/35

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 4.6 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

10.8/14.4 3/60 3-4.8 MULTIPLE CKT 1 30.0/34.7 4.6 44/50 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

MAXIMUM

CIRCUIT

PROTECTION

Page 21

4.6B Electrical Data – With Electric Heat: (-)HLL - continued

AIR HANDLER

MODEL

(-)HLL

3621 RXBH-1724A18J 12.8/17.0 1/60 4-4.26 SINGLE 61.6/70.8 4.0 82/94 90/100 3821 6.4/8.5 1/60 2-4.26 MULTIPLE CKT 1 30.8/35.4 4.0 44/50 45/50

• ? Heater Kit Connection Type A=Breaker B=Terminal Block C=Disconnect Pullout *Values only. No single point kit available.

NOTES:

• 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.

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

• Largest motor load is included in single circuit or circuit 1 of multiple circuits.

• Heater loads are balanced on 3 phase models with 3 or 6 heaters only.

• No electrical heating elements are permitted to be used with A Voltage (115V) air handler.

• Do not use 480V electrical heaters on 208/240V air handler.

• Do not use 208/240V electrical heaters on 480V air handler.

HEATER

MODEL

NO.

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

RXBH-1724A15J

RXBH-1724A18J

RXBH-1724B05J 3.6/4.8 1/60 1-4.8 SINGLE 17.3/20.0 4.0 27/30 30/30 RXBH-1724B07J 5.4/7.2 1/60 2-3.6 SINGLE 26.0/30.0 4.0 38/43 40/45 RXBH-1724B10J 7.2/9.6 1/60 2-4.8 SINGLE 34.6/40.0 4.0 49/55 50/60

HEATER

(208/240V)

(480V)

3.6/4.8 1/60 1-4.8 MULTIPLE CKT1 17.3/20.0 4.0 27/30 30/30

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

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

PH/HZ

NO.

ELEMENTS

- KW PER

TYPE SUPPLY

CIRCUIT

SINGLE CIRCUIT

MULTIPLE CIRCUIT

CIRCUIT

AMPS.

MOTOR

AMPACITY

MINIMUM

CIRCUIT

AMPACITY

MAXIMUM

CIRCUIT

PROTECTION

Page 22

4.6C HEATER KIT SUPPLEMENTAL INFORMATION

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 23

Single-Stage

A/C Thermostat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

W/BL

Air Handler

ODD

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

W/BL

Air Handler

ODD

G/BK

W/BK

G/Y

Y/BL

Humidistat

Two Stage

A/C Thermostat

A/C Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

W/BL

Air Handler

ODD

G/BK

W/BK

G/Y

Y/BL

Heat Pump Thermostat

Heat Pump

Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

Air Handler

ODD

W/BK

G/BK

Y/BL

G/Y

W/BL

Humidistat

Heat Pump Thermostat

Heat Pump

Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

Air Handler

ODD

W/BK

G/BK

Y/BL

G/Y

W/BL

Heat Pump Thermostat

Heat Pump

Outdoor Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

Air Handler

ODD

W/BK

G/BK

Y/BL

G/Y

W/BL

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.

WIRE COLOR CODE:

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

FIGURE 9

TYPICAL THERMOSTAT: STD COOLING W / ELECTRIC HEAT

FIGURE 11

TYPICAL THERMOSTAT: STD COOLING W / ELECTRIC HEAT USING A 2-STG DEHUMIDIFYING THERMOSTAT

*When using 13kW or higher, it is

recommitted to jump W1 and W2 together for maximum outlet temperature rise.

FIGURE 10

TYPICAL THERMOSTAT: STD COOLING W / ELECTRIC HEAT USING A HUMIDISTAT FOR DEHUMIDIFICATION

FIGURE 12

TYPICAL THERMOSTAT: HEAT PUMP W / ELECTRIC HEAT

FIGURE 13

TYPICAL THERMOSTAT: HEAT PUMP W / ELECTRIC HEAT USING A HUMIDIFSTAT FOR DEHUMIDIFICATION

*When using 13kW or higher, it is

recommitted to jump W1 and W2 together for maximum outlet temperature rise.

*When using 13kW or higher, it is

recommitted to jump W1 and W2 together for maximum outlet temperature rise.

FIGURE 14

TYPICAL THERMOSTAT: HEAT PUMP W / ELECTRIC HEAT USING A 2STG DEHUMIDIFYING THERMOSTAT

*When using 13kW or higher, it is

recommitted to jump W1 and W2 together for maximum outlet temperature rise.

Page 24

5.0 AIRFLOW PERFORMANCE

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 .3 to .7 in W.C. external static range. Units with coils should be applied with a minimum of .1 in W.C. external static.

5.1 AIRFLOW OPERATING LIMITS

Cabinet Size 17 17/21 21 21 24

Cooling BTUH x 1,000 -018 -024 -030 -036 -038 -042 -048 -048 -060 Cooling Tons Nominal 1.5 2 2.5 3 3.5 3.5 445

Heat Pump or Air Conditioning Maximum Heat/Cool CFM [L/s] 675 900 1125 1350 1350 1575 1800 1800 1930 (37.5 CFM [18 L/s]/1,000 BTUH) [319] [425] [531] [637] [637] [743] [850] [850] [911] (450 CFM [212 L/s]/Ton Nominal)

Heat Pump or Air Conditioning Nominal Heat/Cool CFM [L/s] 600 800 1000 1200 1200 1400 1600 1600 1800 (33.3 CFM [16 L/s]/1,000 BTUH) [283] [378] [472] [566] 566] [661] [755] [755] [850] (400 CFM [189 L/s]/Ton Nominal)

Heat Pump or Air Conditioning Minimum Heat/Cool CFM [L/s] 540 720 900 1080 1080 1260 1440 1440 1620 (30.0 CFM [14 L/s]/1,200 BTUH) [255] [340] [425] [510] [510] [595] [680] [680] [765] (360 CFM [170 L/s]/Ton Nominal)

Maximum kW Electric Heating 13 13 18 18 18 20 25 25 30 & Minimum Electric Heat CFM [L/s] 487 [230] 617 [291] 814 [384] 1054 [497] 1042 [492] 1171 [553] 1502 [709] 1502 [709] 1666 [786]

Maximum Electric Heat Rise °F [°C] 80 [26.7] 63 [17.2] 66 [18.9] 51 [10.6] 52 [11.1] 49 [9.4] 50 [10] 50 [10] 54 [12.2]

Page 25

5.2 240V AIRFLOW PERFORMANCE DATA – (-)HSL (PSC MOTOR)

Model

Number

-1817

No heater

-1817 with

13kw heater

-2417

No heater

-2417 with

13kw heater

-3017

No heater

-3017 with

18kw heater

-3617/-3621 No heater

-3617/-3621

with

18kw heater

-4221

No heater

-4221 with

20kw heater

Motor Speed

From

Factory

High

240 V

High

240 V

High

240 V

High

240 V

High

240 V

High

240 V

High

240 V

High

240 V

High

240 V

High

240 V

Manufacturer Recommended Air Flow Range

(Min / Max) CFM

523/705 CFM

[247/333 L/s]

493/655 CFM

[233/309 L/s]

682/897 CFM

[322/423 L/s]

652/847 CFM

[308/400 L/s]

883/1015 CFM

[417/479 L/s]

833/915 CFM

[393/432 L/s]

1104/1194 CFM

[521/563 L/s]

1054/1094 CFM

[497/516 L/s]

1211/1514 CFM

[571/714 L/s]

1225/1500 CFM

[538/667 L/s]

Blower Size/

Motor HP

[W]

# of Speeds

10x6

1/5HP[149]

2 Speed

10x6

1/5HP[149]

2 Speed

10x6

1/5HP[149]

2 Speed

10x6

1/5HP[149]

2 Speed

10x8

1/4HP[186]

2 Speed

10x8

1/4HP[186]

2 Speed

10x8

1/3HP[249]

2 Speed

10x8

1/3HP[249]

2 Speed

10x10

1/2HP[373]

2 Speed

10x10

1/2HP[373]

2 Speed

Motor Speed

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

PSC CFM[L/s] Air Delivery/RPM/Watts-240 Volts

External Static Pressure-Inches W.C.

0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]

681 [321] 636 [300] 606 [286] 567 [268] 523 [247] ——

CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts

541 601 670 714 768 —— 193 181 173 164 157 ——

— ———705 [333] 650 [307] 599 [283] —— — — 815 861 989 —— — — 239 227 204

651 [307] 606 [286] 576 [272] 537 [253] 493 [233] ——

571 631 700 744 798 —— 184 172 164 155 148 ——

— ———655 [309] 600 [283] 549 [259] — ———840 886 1014 —— — — 228 216 193

875 [413] 806 [380] 787 [371] 739 [349] 682 [322] ——

648 700 745 794 827 —— 259 255 243 234 227 ——

—— — —897 [423] 851 [402] 765 [361] —— — — 906 925 955 — ———332 318 306

845 [399] 776 [366] 757 [357] 709 [335] 652 [308] ——

678 730 775 824 857 —— 250 246 234 225 218 ——

—— — —847 [400] 801 [378] 715 [337] —— — — 931 950 980 — ———321 307 295

1038 [490] 1010 [477] 976 [461] 925 [437] 883 [417] ——

721 771 799 848 880 —— 325 314 303 290 286 ——

—— — —1015 [479] 963 [454] 890 [420] —— — — 928 955 974 —— — — 356 341 329

988 [466] 960 [453] 926 [437] 875 [413] 833 [393] ——

771 821 849 898 930 —— 305 294 283 270 266 ——

—— — —915 [432] 863 [407] 790 [373] —— — — 953 980 999 —— — — 326 311 299

1229 [580] 1201 [567] 1170 [552] 1141 [538] 1104 [521] ——

788 833 872 909 951 —— 466 462 427 406 395 ——

—— — —1248 [589] 1194 [563] 1133 [535] —— — —1008 1028 1042 —— — — 488 475 454

1179 [556] 1151 [543] 1120 [529] 1091 [515] 1054 [497] ——

838 883 922 959 1001 —— 446 442 407 386 375 ——

—— — —1148 [542] 1094 [516] 1033 [487] —— — —1033 1053 1067 —— — — 458 445 424

1526 [720] 1474 [696] 1427 [673] 1307 [617] 1241 [586] ——

834 870 902 948 968 —— 560 549 535 476 462 ——

—— — —1537 [725] 1418 [669] 1334 [630] —— — —1072 1077 1085

—— — — 860 835 820

1456 [687] 1404 [663] 1357 [640] 1237 [584] 1171 [553] ——

886 906 925 959 992 ——

542 524 505 468 431 ——

—— — —1437 [678] 1318 [622] 1234 [582] —— — —1080 1090 1105 —— — — 840 800 785

Page 26

5.2 240V AIRFLOW PERFORMANCE DATA – (-)HSL (PSC MOTOR) - continued

Model

Number

-4821/-4824 No heater

-4821/-4824

with

25kw heater

-6024

No heater

-6024 with

30kw heater

Motor

Speed

From

Factory

High

240 V

High

240 V

High

240 V

High

240 V

Manufacturer

Recommended

Air Flow Range

(Min / Max) CFM

1455/1787 CFM

[687/843 L/s]

1225/1500 CFM

[654/796 L/s]

1766/1965 CFM

[833/927 L/s]

1666/1844 CFM

[786/870 L/s]

Blower Size/

Motor HP

[W]

# of Speeds

10x10

3/4HP[559]

2 Speed

10x10

3/4HP[559]

2 Speed

11x11

3/4HP[559]

2 Speed

11x11

3/4HP[559]

2 Speed

Motor Speed

Low

High

Low

High

Low

High

Low

High

PSC CFM[L/s] Air Delivery/RPM/Watts-240 Volts

External Static Pressure-Inches W.C.

0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]

1560 [736] 1550 [731] 1543 [728] 1510 [713] 1455 [687] ——

CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts

807 840 914 941 989 —— 601 589 553 541 507 ——

— ———1787 [843] 1679 [792] 1575 [743] —— — —1089 1098 1110 —— — — 695 665 630

1490 [703] 1480 [698] 1473 [695] 1440 [680] 1385 [654] ——

857 897 937 974 1011 —— 581 569 533 521 487 ——

— ———1687 [796] 1579 [745] 1475 [696] — ———1095 1107 1120 —— — — 670 635 615

1944 [917] 1912 [902] 1860 [878] 1813 [856] 1766 [833] ——

764 803 838 865 889 —— 779 763 747 729 708 ——

—— — —1965 [927] 1908 [900] 1854 [875] —— — — 943 967 977 — ———828 799 795

1844 [870] 1812 [855] 1760 [831] 1713 [808] 1666 [786] ——

839 865 890 913 935 —— 745 729 713 696 678 ——

— ———1865 [880] 1808 [853] 1754 [828] —— — — 987 1001 1014 —— — — 788 766 744

NOTE:

• All 208/240V PSC motors have voltage taps for 208 and 240 volts.

• All 208/240V PSC motors are shipped on high speed and 240 volts.

• If the application external static is less than 0.5” WC, adjust the motor speed to the low static speed as described below.

- Unplug the black motor wire off the relay on the control board and plug in the red motor wire.

- Replace the cap on the black motor wire.

• Voltage change (208/240V motors):

- Move the orange lead to transformer 208V tap from 240V tap. Replace the wire cap on 240V tap.

- Unplug the purple motor wire off the transformer and plug in the yellow motor wire.

- Replace the cap on the purple motor wire.

• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.

• The following formula can be used to calculate the approximate airflow, if a smaller (N kw) than the maximum heater kit is installed. Approximate Airflow = Airflow without heater - (Airflow without heater - Airflow with maximum heater) X (N kw/maximum heater kw)

Page 27

5.3 115/208/480V AIRFLOW PERFORMANCE DATA – (-)HSL (PSC MOTOR)

Model

Number

-1817

No heater

-1817 with

13kw heater

-2417

No heater

-2417 with

13kw heater

-3017

No heater

-3017 with

18kw heater

-3617/-3621 No heater

-3617/-3621

with

18kw heater

-4221

No heater

-4221 with

20kw heater

Motor Speed

From

Factory

High

Manufacturer Recommended Air Flow Range

(Min / Max) CFM

517/711 CFM

[244/336 L/s]

487/661 CFM

[230/312 L/s]

647/888 CFM

[305/419 L/s]

617/838 CFM

[291/395 L/s]

864/1004 CFM

[408/474 L/s]

814/904 CFM

[384/427 L/s]

1110/1248 CFM

[524/589 L/s]

1060/1148 CFM

[500/542 L/s]

1241/1537 CFM

[586/725 L/s]

1225/1500 CFM

[553/678 L/s]

Blower Size/

Motor HP

[W]

# of Speeds

10x6

1/5HP[149]

2 Speed

10x6

1/5HP[149]

2 Speed

10x6

1/5HP[149]

2 Speed

10x6

1/5HP[149]

2 Speed

10x8

1/4HP[186]

2 Speed

10x8

1/4HP[186]

2 Speed

10x8

1/3HP[249]

2 Speed

10x8

1/3HP[249]

2 Speed

10x10

1/2HP[373]

2 Speed

10x10

1/2HP[373]

2 Speed

Motor

Speed

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

PSC CFM[L/s] Air Delivery/RPM/Watts-240 Volts

External Static Pressure-Inches W.C.

0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]

668 [315] 637 [301] 595 [281] 560 [264] 517 [244] ——

541 596 657 706 761 —— 180 171 166 161 155 ——

— ———711 [336] 662 [312] 614 [290] — ———812 853 890 —— — — 243 227 210

638 [301] 607 [286] 565 [267] 530 [250] 487 [230] ——

571 656 687 736 791 —— 171 162 157 152 146 ——

—— — —661 [312] 612 [289] 564 [266] —— — — 837 878 915 — ———232 216 199

817 [386] 779 [368] 757 [357] 693 [327] 647 [305] ——

616 667 715 770 808 —— 239 230 221 206 196 ——

— ———888 [419] 828 [391] 774 [365] —— — — 875 908 958 —— — — 331 313 301

787 [371] 749 [353] 727 [343] 663 [313] 617 [291] ——

646 697 745 800 838 —— 230 221 212 197 187 ——

—— — —838 [395] 778 [367] 724 [342] —— — — 900 933 983 — ———320 302 290

1022 [482] 987 [466] 940 [444] 903 [426] 864 [408] ——

700 754 794 833 870 —— 344 313 302 294 288 ——

—— — —1004 [474] 951 [449] 883 [417] —— — — 924 953 975 —— — — 364 352 344

972 [459] 937 [442] 890 [420] 853 [403] 814 [384] ——

750 804 844 883 920 —— 324 293 282 274 268 ——

—— — —904 [427] 851 [402] 783 [370] —— — — 949 978 1000 —— — — 334 322 314

1201 [567] 1170 [552] 1141 [538] 1104 [521] 1062 [501] ——

833 872 909 951 965 —— 462 427 406 396 385 ——

—— — —1194 [563] 1134 [535] 1078 [509] —— — —1024 1042 1060 —— — — 475 454 417

1151 [543] 1120 [529] 1091 [515] 1054 [497] 1012 [478] ——

883 922 959 1001 1015 —— 442 407 386 376 365 ——

—— — —1094 [516] 1034 [488] 978 [462] —— — —1049 1067 1085 —— — — 445 424 386

1493 [705] 1449 [684] 1363 [643] 1287 [607] 1211 [571] ——

822 858 885 931 958 —— 540 519 506 484 459 ——

—— — —1514 [714] 1411 [666] 1315 [621] —— — —1061 1069 1078 —— — — 710 702 677

1423 [672] 1379 [651] 1293 [610] 1217 [574] 1141 [538] ——

870 882 925 957 992 —— 514 508 490 461 431 ——

—— — —1414 [667] 1311 [619] 1215 [573] —— — —1067 1080 1094 —— — — 700 678 665

Page 28

5.3 115/208/480V AIRFLOW PERFORMANCE DATA – (-)HSL (PSC MOTOR) - continued

Model

Number

-4821/-4824 No heater

-4821/-4824

with

25kw heater

-6024

No heater

-6024 with

30kw heater

Motor

Speed

From

Factory

High

Manufacturer

Recommended

Air Flow Range

(Min / Max) CFM

1395/1824 CFM

[658/861 L/s]

1225/1500 CFM

[625/814 L/s]

1710/1967 CFM

[807/928 L/s]

1640/1796 CFM

[773/847 L/s]

Blower Size/

Motor H.P.

[W]

# of Speeds

10x10

3/4HP[559]

2 Speed

10x10

3/4HP[559]

2 Speed

11x11

3/4HP[559]

2 Speed

11x11

3/4HP[559]

2 Speed

Motor Speed

Low

High

Low

High

Low

High

Low

High

PSC CFM[L/s] Air Delivery/RPM/Watts-240 Volts

External Static Pressure-Inches W.C.

0.1 [.02] 0.2 [.05] 0.3 [.07] 0.4 [.10] 0.5 [.12] 0.6 [.15] 0.7 [.17]

1488 [702] 1419 [670] 1466 [692] 1430 [675] 1395 [658] ——

CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts

812 861 912 943 973 —— 554 545 526 508 491 ——

— ———1824 [861] 1767 [834] 1653 [780] —— — —1102 1112 1121 —— — — 871 830 770

1418 [669] 1349 [637] 1396 [659] 1360 [642] 1325 [625] ——

862 899 935 965 995 —— 534 525 506 588 471 ——

— ———1724 [814] 1667 [787] 1553 [733] — ———1116 1119 1130 —— — — 810 780 730

1866 [881] 1833 [865] 1806 [852] 1772 [836] 1710 [807] ——

764 803 824 856 886 —— 514 756 733 715 701 ——

—— — —1967 [928] 1916 [904] 1863 [879] —— — — 948 959 991 — ———850 827 816

1796 [848] 1763 [832] 1736 [819] 1702 [803] 1640 [774] ——

828 860 878 890 1001 —— 735 718 705 695 678 ——

— ———1867 [881] 1816 [857] 1763 [832] —— — — 989 1005 1020 —— — — 818 795 780

NOTE:

• All 208/240V PSC motors have voltage taps for 208 and 240 volts.

• All 208/240V PSC motors are shipped on high speed and 240 volts.

• All 115V PSC motors are shipped on high speed.

• If the application external static is less than 0.5” WC, adjust the motor speed to the low static speed as described below:

- Unplug the black motor wire off the relay on the control board and plug in the red motor wire.

- Replace the cap on the black motor wire.

• Voltage change (208/240V motors):

- Move the orange lead to transformer to 208V tap from 240V tap. Replace the wire cap on 240V tap.

- Unplug the purple motor wire off the transformer and plug in the yellow motor wire.

- Replace the cap on the purple motor wire.

• All 480V PSC motors are shipped on high speed.

• If the application external static is less than 0.5” WC, adjust the motor speed to the low static speed as described below for 3-ton through 4-ton air handlers.

- Unplug the black motor wire off the relay and remove the cap from the red motor wire.

- Plug the red motor wire to the relay and connect the black motor wire with the yellow motor wire.

• For 5-ton air handler, unplug the black motor wire off the relay and plug in the red motor wire, then cap the black motor wire. There is no yellow motor wire on 5-ton air handler.

WARNING: Do not connect red motor wire with yellow motor wire in any circumstance on 480V PSC motors. Connecting red motor wire with yellow motor wire will result in permanent motor damage.

• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.

Page 29

5.4 115/208/240/480V AIRFLOW PERFORMANCE DATA – (-)HLL (X-13 MOTOR)

Manufacturer Recommended Air Flow Range

(Min / Max) CFM

509/681CFM

[240/321 L/s]

490/666 CFM

[231/314 L/s]

730/651 CFM

[345/307 L/s]

711/626 CFM

[336/295 L/s]

935/1084 CFM

[441/512 L/s]

910/1059 CFM

[429/500 L/s]

1130/1275 CFM

[533/602 L/s]

1105/1250 CFM

[521/590 L/s]

Blower Size/

Motor H.P.

# of Speeds

10x6

1/3 [249]

5 Speed

10x6

1/3 [249]

5 Speed

10x6

1/3 [249]

5 Speed

10x6

1/3 [249]

5 Speed

10x8

1/2 [373]

5 Speed

10x8

1/2 [373]

5 Speed

10x8

1/2 [373]

5 Speed

10x8

1/2 [373]

5 Speed

Motor

Speed

CFM[L/s] Air Delivery/RPM/Watts-115/208/240 Volts

External Static Pressure-Inches W.C.

0.10 [.02] 0.20 [.05] 0.30 [.07] 0.40 [.10] 0.50 [.12] 0.60 [.15] 0.70 [.17]

689 [325] 644 [304] 602 [284] 563 [266] 509 [240] ——

580 633 683 728 781 ——

66 84 86 88 91 —— — ———681 [321] 644 [304] 603 [285] — ———835 879 916 —— — — 136 143 152

670 [316] 625 [295] 583 [275] 544 [257] 490 [231] ——

608 661 711 756 809 ——

75 93 95 97 100 —— —— — —666 [314] 629 [297] 588[277] — ———855 899 936 — ———144 151 160

875 [413] 839 [396] 804 [379] 762 [360] 730 [345] ——

679 724 765 810 852 —— 121 131 135 142 143 ——

—— — —862 [407] 828 [391] 801 [378] —— — — 904 940 970 — ———203 215 220

856 [404] 820 [387] 785 [370] 743 [351] 711 [336] ——

707 752 793 838 880 —— 130 140 144 151 152 ——

—— — —837 [395] 803 [379] 776 [366] —— — — 924 960 990 — ———211 223 228

1093 [516] 1050 [496] 1017 [480] 977 [461] 935 [441] ——

671 725 764 809 852 —— 153 168 174 180 188 ——

—— — —1084 [512] 1040 [491] 1001 [472] —— — — 896 936 971 —— — — 249 257 261

1068 [504] 1025 [484] 992 [468] 952 [449] 910 [429] ——

711 765 804 849 892 —— 164 179 185 191 199 ——

—— — —1059 [500] 1015 [479] 976 [461] —— — — 936 976 1011 —— — — 260 268 272

1270 [599] 1237 [584] 1199 [566] 1165 [550] 1130 [533] ——

775 816 846 882 926 —— 237 249 259 268 277 ——

—— — —1275 [602] 1244 [587] 1211 [571] —— — — 963 999 1029 —— — — 338 348 363

1245 [588] 1212 [572] 1174 [554] 1140 [538] 1105 [521] ——

815 856 886 922 966 —— 248 260 270 279 288 ——

—— — —1250 [590] 1219 [575] 1186 [560] —— — —1003 1039 1069 —— — — 349 359 374

Model

Number

2417

No heater

2417

with

13kw heater

2417

No heater

2417

with

13kw heater

3617

No heater

3617

with

18kw heater

3617

No heater

3617

with

18kw heater

Tonnage

Application

1.5

2.0

2.5

3.0

Motor

Speed

From

Factory

X-13

Page 30

5.4 115/208/240/480V AIRFLOW PERFORMANCE DATA – (-)HLL (X-13 MOTOR) - continued

X-13

Model

Number

-3821

No Heater

-3821

with 18kW

Heater

-3821

No Heater

-3821 with

18kW Heater

4821

No heater

4821

with

20kw heater

4821

No heater

4821

with

25kw heater

Tonnage

Application

2.5

3 & 3.5

3.5

4.0

Motor Speed

From

Factory

Manufacturer

Recommended

Air Flow Range

(Min / Max) CFM

854/1103 CFM

[403/521 L/s]

828/1016 CFM

[391/480 L/s]

1070/1288 CFM

[505/608 L/s]

1042/1257 CFM

[492/593 L/s]

1337/1447 CFM

[631/683 L/s]

1297/1333 CFM

[612/629 L/s]

1535/1654 CFM

[724/781 L/s]

1495/1614 CFM

[706/762 L/s]

Blower Size/

Motor H.P.

# of Speeds

10x10

3/4 HP

5 Speed

10x10

3/4 HP

5 Speed

10x10

3/4 HP

5 Speed

10x10

3/4 HP

5 Speed

10x10

3/4 [559]

5 Speed

10x10

3/4 [559]

5 Speed

10x10

3/4 [559]

5 Speed

10x10

3/4 [559]

5 Speed

Motor Speed

CFM[L/s] Air Delivery/RPM/Watts-115/208/240 Volts

External Static Pressure-Inches W.C.

0.10 [.02] 0.20 [.05] 0.30 [.07] 0.40 [.10] 0.50 [.12] 0.60 [.15] 0.70 [.17]

1073 1016 963 906 854 ——

637 692 746 801 847 —— 130 142 153 165 176 ——

—— — —1103 1059 1000 — ———917 957 1001 — ———262 271 285

1044 988 936 880 828 ——

678 734 791 844 883 —— 141 155 158 171 182 ——

—— — —1016 961 904 —— — — 939 968 1015 — ———233 243 265

1264 1223 1171 1112 1070 ——

724 761 814 868 900 —— 198 208 222 237 245 ——

— ———1288 1244 1200 —— — — 974 1012 1044 —— — — 345 362 371

1233 1193 1142 1084 1042 ——

750 794 845 915 933 —— 219 215 227 251 261 ——

—— — —1257 1213 1169 — ———1020 1023 1054 —— — — 355 368 376

1473 [695] 1442 [681] 1401 [661] 1373 [648] 1337 [631] ——

781 825 867 905 949 —— 257 271 303 307 315 ——

—— — —1447 [683] 1433 [676] 1402 [662] —— — — 987 1034 1065 —— — — 394 406 405

1433 [676] 1402 [662] 1361 [642] 1333 [629] 1297 [612] ——

831 875 919 954 989 —— 277 295 313 319 325 ——

—— — —1333 [629] 1300 [613] 1267 [598] —— — —1011 1046 1080 —— — — 350 364 377

1665 [786] 1631 [770] 1601 [756] 1572 [742] 1535 [724] ——

853 893 934 968 1015 —— 351 387 401 406 422 ——

—— — —1654 [781] 1624 [766] 1563 [738] —— — —1036 1078 1095 —— — — 500 513 523

1625 [767] 1591 [751] 1561 [737] 1532 [723] 1495 [706] ——

894 932 970 1020 1052 —— 389 400 410 430 450 ——

—— — —1614 [762] 1584 [748] 1523 [719] —— — —1085 1090 1105 —— — — 514 520 530

Page 31

5.4 115/208/240/480V AIRFLOW PERFORMANCE DATA – (-)HLL (X-13 MOTOR) - continued

X-13

Model

Number

4824

No heater

4824

with

25kw heater

6024

No heater

6024

with

30kw heater

-6024 No Heater

-6024 with 30kW Heater

Tonnage

Application

4.0

5.0

4 & 5

Motor

Speed

From

Factory

Manufacturer Recommended Air Flow Range

(Min / Max) CFM

1545/1732 CFM

[729/817 L/s]

1505/1692 CFM

[710/798 L/s]

1739/1905 CFM

[821/899 L/s]

1699/1865 CFM

[802/880 L/s]

1517/1697 CFM

[716/801 L/s]

1482/1661 CFM

[700/784 L/s]

Blower Size/

Motor H.P.

# of Speeds

11x11

3/4 [559]

5 Speed

11x11

3/4 [559]

5 Speed

11x11

3/4 [559]

5 Speed

11x11

3/4 [559]

5 Speed

11x11

3/4 [559]

5 Speed

11x11

3/4 [559]

5 Speed

Motor

Speed

CFM[L/s] Air Delivery/RPM/Watts-115/208/240 Volts

External Static Pressure-Inches W.C.

0.10 [.02] 0.20 [.05] 0.30 [.07] 0.40 [.10] 0.50 [.12] 0.60 [.15] 0.70 [.17]

1748 [825] 1669 [788] 1639 [773] 1599 [755] 1545 [729] ——

CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts CFM RPM Watts

660 698 734 762 795 —— 297 311 326 340 353 ——

—— — —1732 [817] 1683 [794] 1630 [769] — ———840 872 899 — ———448 467 480

1708 [806] 1629 [769] 1599 [755] 1559 [736] 1505 [710] ——

680 736 760 790 820 —— 305 330 341 350 361 ——

—— — —1692 [798] 1643 [775] 1590 [750] —— — — 865 890 1014 — ———460 470 481

1902 [898] 1862 [879] 1809 [854] 1781 [840] 1739 [821] ——

712 749 787 815 856 —— 389 409 419 432 459 ——

— ———1905 [899] 1866 [881] 1832 [865] —— — — 894 924 950 —— — — 565 570 592

1862 [879] 1822 [860] 1769 [835] 1741 [822] 1699 [802] ——

750 790 810 850 880 —— 410 420 430 455 479 ——

—— — —1865 [880] 1826 [862] 1792 [846] — ———920 945 970 —— — — 565 587 610

1705 [805] 1661 [784] 1632 [770] 1572 [742] 1517 [716] ——

663 701 741 782 819 —— 292 309 321 343 357 ——

—— — —1697 [801] 1646 [777] 1601 [756] —— — — 857 895 920 —— — — 447 466 473

1669 [788] 1625 [767] 1596 [753] 1537 [725] 1482 [700] ——

698 739 763 816 842 —— 308 317 329 361 373 ——

—— — —1661 [784] 1611 [760] 1566 [739] —— — — 882 915 939 —— — — 447 480 487

NOTE:

X-13 motor speed changes All X-13 motors have 5 speed tabs. Speed tab 1 is for continuous fan. Speed tab 2 (low static) and Speed tab 3 (high static) are for lower tonnage. Speed tab 4 (low stat-

ic) and Speed tab 5 (high static) are for higher tonnage. X-13 air handlers are always shipped from factory at speed tab 5, except for -4824, which is set at speed tab 3. The low static Speed tab 2 (lower tonnage) and 4 (higher tonnage) are used for external static below 0.5” WC. The high static Speed tab 3 (lower tonnage) and 5 (higher

tonnage) are used for external static exceeding 0.5” WC. Move the blue wire to the appropriate speed tab as required by the application needs.

• The airflow for continuous fan (Speed tab 1) is always set at 50% of the Speed tab 4.

• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.

Page 32

6.0 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 with the unit. Attach flanges around the blower outlet.

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.

• 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.

• 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.

7.0 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. 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 (See Figure 4.)

7.1 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.

7.2 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.

Page 33

FIGURE 15

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.

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 7.)

• 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 7).

• 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.

7.3 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.)

8.0 AIR FILTER (not factory-installed)

• External filter or other means of filtration is required. Units should be sized for a maxi-

mum of 300 feet/min. air velocity or that recommended for the type filter installed.

Filter application and placement are critical to airflow, which may affect the heating and cooling system performance. Reduced airflow can shorten the life of the system’s major components, such as motor, limits, elements, heat relays, evaporator coil or compressor. Consequently, we recommend that the return air duct system have only one filter location. For systems with a return air filter grill or multiple filter grills, can have a filter installed at each of the return air openings.

If high efficiency filters or electronic air cleaners are used in the system, it is important that the airflow is not reduced to maximize system performance and life. Always verify that the system’s airflow is not impaired by the filtering system that has been installed, by performing a temperature rise and temperature drop test.

Page 34

IMPORTANT: DO NOT DOUBLE FILTER THE RETURN AIR DUCT SYSTEM. DO NOT FILTER THE SUPPLY AIR DUCT SYSTEM.

WARNING

Soot damage may occur with filters in place, when certain types of candles, oil lamps or standing pilots are burned.

9.0 SEQUENCE OF OPERATION

9.1 COOLING (COOLING ONLY OR HEAT PUMP)

• When the thermostat “calls for cooling,” the circuit between R and G is completed, causing the blower relay (BR) to energize. The N.O. contacts will close, causing the indoor blower motor (IBM) to operate. The circuit between R and Y is also completed: This circuit closes the contactor (CC) in the outdoor unit starting the compressor (COMP) and outdoor fan motor (OFM).

9.2 HEATING (ELECTRIC HEAT ONLY)

• When the thermostat “calls for heat,” the circuit between R and W is completed, and the heater sequencer (HR blower motor (IBM) will come on. Units with a second heater sequencer (HR connected with the first sequencer (HR nected to a second stage W

1) is energized. The heating elements (HE) and the indoor

2) can be

1) to W on the thermostat sub-base or con-

2 on the sub-base.

9.3 HEATING (HEAT PUMP)

• When the thermostat “calls for heat,” the circuits between R and B, R and Y and 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 selector switch is in “heat” position). Circuit R and Y energizes the contactor (CC) starting the outdoor fan motor (OFM) and compressor (COMP). Circuit R and G energizes the blower relay (BR) starting 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 mostat or connected to a third heating stage W on the thermostat indicates when supplemental heat is being energized.

2) can be connected with first sequencer (HR1) to W2 on ther-

2 energizes a heat sequencer (HR1).

2 on the thermostat sub-base. A light

2 is completed by the

9.4 BLOWER TIME DELAY (HEATING OR COOLING)

• All models are equipped with a blower time delay (BTD) in lieu of a blower relay (BR) (see wiring diagram). The blower will run for 30 seconds after the blower time delay (BTD) is de-energized.

9.5 DEFROST (DEFROST HEAT CONTROL)

• 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 the W on the thermostat. 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 help prevent cold air from being discharged from the indoor unit during defrost.

• For most economical operation, if cold air is not of concern during defrost, the purple wire can be left disconnected. Supplemental heat will then come on only when called for by second stage room thermostat.

Page 35

9.6 EMERGENCY HEAT (HEATING 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 W2 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.

9.7 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

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.

1 & HR2) are connected to separate stages.

1) (see wiring diagram on unit), heat

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

10.0 CALCULATIONS

10.1 CALCULATING TEMPERATURE RISE

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

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

10.2 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

10.3 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

10.4 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 =

3.16 x Watts CFM

Applied Voltage

Rated Voltage

Page 36

11.0 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

start-up instructions and refrigerant charging instructions.

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

12.0 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, see the “Safety Information” section at the front of this manual.

WARNING

12.1 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.

FILTER MAINTENANCE

Have your qualified installer, service agency or HVAC professional instruct you on how to access your filters for regular maintenance.

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

• New filters are available from your local distributor.

Page 37

12.2 INDOOR COIL - DRAIN PAN - DRAIN LINE

Inspect the indoor coil once each year for cleanliness and clean as necessary. In some cases, it may be necessary to remove the filter and check the return side of the coil with a mirror and flashlight.

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.

12.3 BLOWER MOTOR AND WHEEL

Inspect the blower motor and wheel for cleanliness. 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.

12.4 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.

12.5 BLOWER ASSEMBLY REMOVAL AND REPLACEMENT

Removing the blower assembly is not required for normal service and maintenance. Removal is necessary for replacement of defective parts 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 pigtails on right side of blower housing. Remove wire nuts attaching field control wiring to unit control pigtails.

• Remove 4 screws 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 4 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.

Page 38

12.6 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 capacitor and blower relay. Note lead locations for ease of reassembly. Pull leads from plastic bushing in blower side.

• Loosen the set screw holding blower wheel onto the motor shaft. Shaft extends through 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 shaft. A wheel puller can be used on the groove in the blower hub if necessary.

• Remove 4 metal screws holding motor mounts to blower side and remove motor from blower assembly.

• To install new motor, remove 1 screw holding motor mounts to motor shell and remove mounts (four) from motor.

• Install (four) motor mounts to motor using same screw or screws supplied with replacement motor.

WARNING

• To reassemble, insert motor shaft through hub in blower wheel and orient motor to original position with motor leads and motor label to front of blower (control area).

• Reassemble 12 sheet metal screws through motor mounts into blower side. Do not overtorque screws, blower side is light gage sheet metal, just snug screws tight enough to hold motor mounts in position.

• Turn motor shaft so that flat on shaft is located under blower wheel setscrew, and blower wheel is centered in blower housing with the same distance on each side between the inlet venturi and outside of blower wheel. Tighten setscrew on motor shaft. Turn wheel by hand to make sure it runs true without hitting blower sides.

• Reassemble motor wiring to capacitor and blower relay making sure that wires match wiring diagram and are tight and secure.

12.7 BLOWER WHEEL REPLACEMENT

With the blower assembly removed and the motor assembly removed (see above instructions), remove the 4 screws holding the blower wrap (cutoff) to the blower sides.

• 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.

13.0 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.

Page 39

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).

14.0 ACCESSORIES-KITS-PARTS

• Combustible Floor Base RXHB- for downflow applications.

Model Cabinet Size Base Model Number

Combustible Floor

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

• Jumper Bar Kit 3 Ckt. to 1 Ckt. RXBJ-A31 is used to convert single phase multiple three circuit units to a single supply circuit. Kit includes cover and screw for line side terminals.

• Jumper Bar Kit 2 Ckt. to 1 Ckt. RXBJ-A21 is used to convert single phase multiple two circuit units to a single supply circuit. Kit includes cover and screw for line side terminals.

NOTE: No jumper bar kit is available to convert three phase multiple two circuit units to a single supply circuit.

• External Filter Base RXHF- (See Figure 16)

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

• External Filter Rack: RXHF-B (See Figure 17)

FIGURE 16

EXTERNAL FILTER BASE: RXHF-

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

Page 40

FIGURE 17

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 4821/4824 RXHH-A04 RXHH-A04x10

6024 RXHH-A05 RXHH-A05x10

• Auxiliary Horizontal Overflow Pan RXBM-

Nominal Cooling

Capacity Tons

⁄2 - 3 RXBM-AC48

⁄2 - 5 RXBM-AC61

Auxiliary Horizontal

Overflow Pan Accessory

Model Number

40 CM 1012

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