Rheem RHSL-HM4221AA User Manual

92-20521-32-15
SUPERSEDES 92-20521-32-14
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
FEATURING INDUSTRY STANDARD R-410A REFRIGERANT:
RHLL High Efficiency
RHSL Standard Efficiency
INSTALLATION INSTRUCTIONS
refrigerant

Rheem RHSL-HM4221AA Specifications

General

Brand	Rheem
Model	RHSL-HM4221AA
Category	Air Handlers
Language	English

Summary

Safety Information

General Information

Important Information About Efficiency and Indoor Air Quality

Discusses efficiency, comfort, and indoor air quality maintenance.

Applications

Electrical Wiring

Power Wiring

Covers power supply requirements, branch circuits, and connection methods.

Control Wiring

Details low voltage control wiring requirements and separation from power wiring.

Grounding

Emphasizes the importance of proper unit grounding for safety.

Electrical Wiring

Further guidance on field wiring, supply wiring, and grounding.

Electrical Data – Blower Motor Only – No Electric Heat

Provides electrical data for blower motors without electric heat.

Electrical Data – With Electric Heat

Lists electrical data for units equipped with electric heat kits.

Airflow Performance

Airflow Operating Limits

Defines operating limits for cooling and electric heat airflow based on cabinet size.

240V Airflow Performance Data – (-)HSL (PSC MOTOR)

Presents airflow performance data for 240V units with PSC motors.

115/208/480V Airflow Performance Data – (-)HSL (PSC MOTOR)

Details airflow performance for 115/208/480V units with PSC motors.

Ductwork

Refrigerant Connections

Condensate Drain Tubing

Sequence of Operation

Cooling (Cooling Only or Heat Pump)

Heating (Electric Heat Only)

Heating (Heat Pump)

Emergency Heat (Heating Heat Pump)

Calculations

Pre-Start Checklist

Maintenance

Air Filter (Not Factory-Installed)

Indoor Coil - Drain Pan - Drain Line

Blower Assembly Removal and Replacement

Detailed procedure for removing and replacing the blower assembly.

Motor Replacement

Steps for removing and replacing the indoor blower motor.

Blower Wheel Replacement