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Rheem A17 Series User Manual

Rheem A17 Series
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INSTALLATION INSTRUCTIONS
(-)A17 MODEL SERIES - 17 SEER
EQUIPPED WITH ECONET
TM
COMMUNICATIONS
WARNING:
RECOGNIZE THIS SYMBOL
AS AN INDICATION OF
IMPORTANT SAFETY
INFORMATION
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.
Do not destroy this manual.
Please read carefully and
keep in a safe place for future
reference by a serviceman.
[ ] indicates metric conversions.
92-104921-07-11 ( / ) Printed in USA
FEATURING INDUSTRY STANDARD
R410-A REFRIGERANT
AIR COOLED
CONDENSING UNITS

Table of Contents

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Rheem A17 Series Specifications

General IconGeneral
TypeHeat Pump
Heating Capacity18, 000 - 60, 000 BTU/h
Cooling Capacity18, 000 - 60, 000 BTU/h
RefrigerantR-410A
Voltage208/230V
StagesSingle-Stage
SeriesA17 Series

Summary

Important Safety Information

Safety Information and Warnings

Recognizes safety symbols and provides warnings regarding proper installation, adjustment, and operation.

General Information

2.1 Introduction

Details the (-)A17 series condensing units' compatibility with EcoNet™ systems and conventional controls.

2.2 Agency Performance Audit Testing Notice

Specifies procedures for verifying efficiency ratings based on AHRI standards.

2.3 Importance of a Quality Installation

Emphasizes critical factors for safety, reliability, and efficiency in installation.

2.4 System Sizing and Selection

Outlines the process for specifying HVAC equipment based on heat gain calculations.

2.5 Importance of Proper Indoor/Outdoor Match-Ups

Highlights the necessity of matching indoor and outdoor units for optimal performance.

2.6 Checking Product Received

Instructs on inspecting received units for shipping damage and verifying components.

2.7 Compressor Break-In Notice

Provides guidelines for initial compressor operation to ensure proper break-in.

Unit Specifications

3.1 Model Number Nomenclature and Available Models

Explains the model number structure and lists available unit configurations.

3.2 Electrical and Physical Data

Presents detailed electrical and physical specifications for the unit models.

Installation Procedures

4.1 Tools & Refrigerant

Lists required tools and specifications for installing R-410A models.

4.2 Choosing a Location

Details site selection criteria, including clearances and operational considerations.

4.3 Unit Mounting

Covers methods for mounting the unit, including high wind and seismic tie-down.

4.4 Refrigerant Line Set Selection

Provides guidelines for selecting and sizing refrigerant line sets for optimal performance.

4.5 Line Set Installation

Offers practices for installing refrigerant tubing, including connections and support.

4.6 Initial Leak testing

Describes the procedure for initial leak testing of the system using nitrogen.

4.7 Evacuation

Details the critical process of evacuating air and moisture from the system.

4.8 Final Leak Testing

Instructs on performing final leak detection after evacuation.

4.9 Control Wiring

Covers wiring for EcoNet™ communication and conventional thermostat controls.

4.10 Power Wiring

Specifies requirements for connecting line voltage power to the unit.

4.11 Grounding

Details the importance and procedure for permanent unit grounding.

System Start-Up and Refrigerant Charging

5.1 System Start-Up Overview

Provides an overview of the steps for starting up the system and verifying components.

5.2 Initial Power-Up and EcoNet™ Communication Verification

Guides on powering up the system and verifying communication between components.

5.3 EcoNet™ Control Center Set-Up

Instructions for configuring the EcoNet™ Control Center before system startup.

5.4 Initial System Start-Up

Details setting the thermostat and initial system operation for verification.

5.5 Indoor Air-Flow Verification

Explains how to verify and adjust indoor air-flow for optimal system performance.

5.6 Refrigerant Charging

Describes how to check and adjust the refrigerant charge against the charging chart.

5.6.1 Measurement Device Set-Up

Guides on connecting gauges and temperature probes for charging measurements.

5.6.2 Preliminary Charging by Weight

Details calculating and adding refrigerant charge based on line set length and weight.

5.6.3 Preliminary Charging by Pressure (Optional)

Offers an optional method for preliminary charging using system pressures.

5.6.4 Final Charging by Liquid Subcooling

Explains the final charging adjustment using liquid subcooling measurements.

5.7 Completing Installation

Final steps to complete installation, including disconnecting hoses and restoring power.

Sequence of Operation

6.1 Cooling Mode

Describes the sequence of operation for the cooling mode, including stage transitions.

6.2 On-Demand Cooling Dehumidification

Explains the operation of the On-Demand Dehumidification feature with EcoNet™ systems.

Components and Controls

7.1 Compressor

Details the Copeland Ultratech 2-stage scroll compressors used in the units.

7.2 Compressor/Fan Motor Capacitor

Describes the capacitor types used for compressors and fan motors in different models.

7.3 Compressor Contactor

Explains the single-pole contactor used to control the compressor.

7.4 Compressor Crankcase Heat (CCH)

Discusses the need for and function of crankcase heaters for compressors.

7.5 EcoNet™ 2-Stage Outdoor Control (TSODC)

Introduces the TSODC, its interface, and its role in system communication and control.

7.6 High and Low Pressure Controls

Details the function and settings of high and low pressure controls for compressor protection.

7.7 Outdoor Ambient Temperature Sensor

Explains the outdoor ambient temperature sensor and its connection to the TSODC.

7.8 Outdoor Fan Blade

Describes the design of the outdoor fan blade for efficiency and quiet operation.

7.9 Outdoor Fan Motor

Details the types of outdoor fan motors used in different models (ECM vs. PSC).

Active Compressor Protection

System Accessories

9.1 Low Ambient Kit (Part. No. RXAD-A08)

Describes the low ambient kit for maintaining system balance at lower outdoor temperatures.

9.2 Hard Start Kit (Part. No. SK-A1)

Details the hard start kit for special cases to reduce light dimming during startup.

9.3 Compressor Crankcase Heater

Lists part numbers for compressor crankcase heaters for 2-ton models.

9.4 Compressor Sound Enclosure

Provides part numbers for compressor sound enclosures for 2, 3, 4, and 5 ton models.

Diagnostics and Troubleshooting

10.1 Test and Fault Recall Modes

Explains how to enter and use test modes and fault recall functions on the TSODC.

10.2 Status and Diagnostic Codes

Lists and describes the diagnostic codes displayed by the 7-segment LEDs on the control.

10.3 Electrical Checks Flowchart

A flowchart to guide electrical troubleshooting steps for unit issues.

10.4 Cooling Mechanical Checks Flowchart

A flowchart to guide mechanical troubleshooting steps for cooling problems.

10.5 Checking Temperature Sensors

Provides resistance charts for checking outdoor temperature sensors.

10.6 General Troubleshooting Guide

A table listing common symptoms, possible causes, and remedies for unit malfunctions.

10.8 Troubleshooting Tips

Provides troubleshooting tips for cooling mode indicators like pressure, superheat, and subcooling.

Outdoor Unit Maintenance

11.1 Outdoor Coil Cleaning

Details the recommended procedure for cleaning the outdoor coil annually.

11.2 Cabinet Cleaning and Care

Provides guidance on cleaning and waxing the exterior cabinet.

11.3 Motor Lubrication

Explains that outdoor fan motors are pre-lubricated and do not require additional oiling.

11.4 Replacement Parts

States that replacement parts must be identical or approved alternates to original parts.

Wiring Diagrams

12.1: 2, 4 and 5 Ton Models - ECM Fan Motor

Presents the wiring diagram for 2, 4, and 5 ton models with ECM fan motors.

12.2: 3 Ton Models - PSC Fan Motor

Presents the wiring diagram for 3 ton models with PSC fan motors.

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