Trane TAM7A0C42H31SA User Manual

© 2011 Trane
NOTICE: Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice.
HyperionFieldReferenceDataTAM7
IMPORTANT --- This document contains a wiring diagram and service information. This is customer property and is to remain with this unit.
Please return to service information pack upon completion of work.
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
For use with BAYEV or BAYW series heaters ONLY
▲
WARNING
!
SAFETY HAZARD! This information is intended for use
by individuals possessing adequate backgrounds of electrical and
mechanical experience. Any attempt to repair a central air condition-
ing product may result in personal injury and/or property damage.
The manufacture or seller cannot be responsible for the interpreta-
tion of this information, nor can it assume any liability in connection
with its use.
PRESSURIZED REFRIGERANT! SYSTEM CONTAINS
OIL AND REFRIGERANT UNDER HIGH PRESSURE. RECOVER
REFRIGERANT TO RELIEVE PRESSURE BEFORE OPENING THE
SYSTEM.
DO NOT USE NON-APPROVED REFRIGERANTS OR REFRIGERANT
SUBSTITUTES OR REFRIGERANT ADDITIVES.
▲
WARNING
!
LIVE ELECTRICAL COMPONENTS! During instal-
lation, testing, servicing, and troubleshooting of this product, it may
be necessary to work with live electrical components. Failure to fol-
low all electrical safety precautions when exposed to live electrical
components could result in death or serious injury.
▲
WARNING
!
Note: This unit is certified to UL 1995.
The interior cabinet wall meets the following:
- UL94-5VA Flame Class Listed
- UL723 Steiner Tunnel Listed for 25/50 Flame/
Smoke
- UL746C Listed for Exposure to Ultraviolet Light,
Water Exposure and Immersion
Table of Contents
Product Specifications. .................................................................................................... 2
Wiring Diagram. ............................................................................................................... 3
Sequence of Operation. ................................................................................................... 4
Control Layout - Refrigerant Dip Switches....................................................................... 7
Airflow Performance. ...................................................................................................... 10
Heater Attribute Data. .................................................................................................... 16
Control Layout - LEDs. ................................................................................................... 19
EEV Test Procedures. .................................................................................................... 24
EVC Thermal Resistance and Voltage Table. ................................................................ 25
Troubleshooting. ............................................................................................................ 26
* May be "A" or "T"
Air Handler - Convertible
Models: Series 7 Air Handlers 2-5 Ton
*AM7A0A24H21SA, *AM7A0B30H21SA
*AM7A0C36H31SA, *AM7A0C42H31SA
*AM7A0C48H41SA, *AM7A0C60H51SA

Trane TAM7A0C42H31SA Specifications

General

Model Number	TAM7A0C42H31SA
Type	Air Handler
Width (in)	21
Depth (in)	21
Voltage	208/230V
Phase	1
Maximum External Static Pressure	0.8 in. wc
Cabinet Construction	Galvanized Steel
Cooling Capacity	3.5 Tons
Heating Capacity	42000 BTU
HSPF Rating	Up to 10 HSPF
Motor Type	ECM

Summary

Safety and Operational Warnings

Hazardous Voltage and Electrical Safety

Critical warnings on electrical hazards and safe handling of live components.

Pressurized Refrigerant and System Safety

Information on handling pressurized refrigerant and system safety precautions.

Product Specifications Overview

Wiring Diagram and Legend

TAM7 Air Handler Electrical Wiring

Electrical connections and component layout for the TAM7 air handler.

Sequence of Operation

Control System Logic Explained

Operational logic for cooling, heating, defrost, and continuous fan modes.

Unit Operation and Diagnostics

Dip Switch Configuration Guide

Heater Information and Specifications

Control Board Status and Fault Code Interpretation

AFC, EVC, EHC, HHC LED Status and Fault Codes

EEV Testing Procedures

Electronic Expansion Valve Operational Tests

Sensor Troubleshooting Guide

Sensor Connection and Resistance Verification

Superheat Troubleshooting Flowcharts

High Superheat Diagnosis and Resolution

Flowchart for diagnosing and resolving high superheat issues in the system.

Low Superheat Diagnosis and Resolution

Flowchart for diagnosing and resolving low superheat issues in the system.