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Rheem RHLL-HM3821AA User Manual

Rheem RHLL-HM3821AA
40 pages
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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

Table of Contents

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Rheem RHLL-HM3821AA Specifications

General IconGeneral
ModelRHLL-HM3821AA
TypeAir Handler
RefrigerantR-410A
Voltage208/230V
Phase1
Cabinet TypeMetal
Height21 inches
Depth21 inches

Summary

Safety Information

Electrical Safety Precautions

Warnings about disconnecting power, hazardous voltage, and proper grounding.

Duct Leak Hazards

Hazards from duct leaks, including pollutant migration and CO poisoning.

Combustible Floor Base Requirements

Requirement for specific floor base when installing units downflow on combustible flooring.

Improper Installation Warning

Warning that improper installation can lead to unsatisfactory operation or dangerous conditions.

General Information

Carbon Monoxide Poisoning Warning

Warning about CO poisoning from vehicle exhaust and fuel-burning devices.

Clearances to Combustible Material

Specifies required clearances to combustible materials for units and ductwork.

Electrical Wiring and Data

Power Wiring Requirements

Requirements for supply circuit power wiring, including conductors and protection.

Control Wiring Guidelines

Guidelines for low voltage control wiring, separation from power wiring.

Grounding Requirements

Importance of permanent grounding for electrical shock prevention.

Electric Heat Electrical Data

Electrical data for various electric heater kits, including circuit requirements.

Airflow Performance

Airflow Operating Limits

Table showing operating limits for cooling and electric heat based on cabinet size.

240V Airflow Performance Data

Airflow performance data for 240V PSC motor models at various static pressures.

Sequence of Operation and Calculations

Pre-Start Checklist and Maintenance

Pre-Start Checklist

A checklist of items to verify before starting the unit for the first time.

Motor and Blower Replacement

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