Rheem RBHP-21A00NH2 User Manual

INSTALLATION INSTRUCTIONS
92-20521-44-06
SUPERSEDES 92-20521-44-05
WARNING
▲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.
ISO 9001:2008
AIR HANDLERS
(-)BHP
• MODELS FEATURING R-22 REFRIGERANT
• MODELS FEATURING EARTH-FRIENDLY R-410A REFRIGERANT
• MODELS FEATURING ELECTRIC HEAT WITHOUT INDOOR
COOLING COIL
refrigerant

Rheem RBHP-21A00NH2 Specifications

General

Model	RBHP-21A00NH2
Type	Air Handler
Heating Capacity	21, 000 BTU
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Motor Type	PSC
CFM	800
Width	21 inches
Depth	21 inches

Summary

1.0 SAFETY INFORMATION

2.3 CLEARANCES

2.4 UNIT MODEL EXPLANATION

3.0 ELECTRICAL WIRING

3.1 POWER WIRING

Covers requirements for connecting the main power supply to the unit.

3.2 CONTROL WIRING

3.3 GROUNDING

3.6 ELECTRIC HEAT ELECTRICAL DATA

4.0 DUCTWORK

5.0 REFRIGERANT CONNECTIONS

5.1 FLOWCHECK PISTONS

Explains how to identify and install flowcheck pistons for indoor coils.

6.0 CONDENSATE DRAIN TUBING

8.0 AIRFLOW PERFORMANCE

8.1 AIRFLOW OPERATING LIMITS

Lists maximum and minimum airflow limits for different unit sizes and conditions.

8.2 AIRFLOW PERFORMANCE DATA

9.0 SEQUENCE OF OPERATION

9.1 Cooling (cooling only or heat pump)

9.2 Heating (electric heat only)

9.3 Heating (heat pump)

9.4 WATT RESTRICTOR (Heating - Heat Pump)

Explains the function and operation of the watt restrictor for heat pumps.

9.5 DEFROST SEQUENCE

Details the sequence of operation for defrost controls in heat pump systems.

9.6 EMERGENCY HEAT (Heating of Heat Pump)

11.0 PRE-START CHECKLIST

12.0 MAINTENANCE

12.2 INDOOR COIL - DRAIN PAN - DRAIN LINE

12.5 BLOWER ASSEMBLY REMOVAL AND REPLACEMENT

12.6 ELECTRIC HEATER REPLACEMENT

12.7 MOTOR REPLACEMENT

13.0 REPLACEMENT PARTS