Trane UHAA-15, UHAA-02, UHAA-03, UHAA-04, UHAA-48 Installation, Operation And Maintanance

Installation, Operation,
and Maintenance

Electric Architectural Forced-Air Wall Heater

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury.When working on the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.

November 2015

UHAA-15 (1500 Watts UHAA-04 (4000 Watts)
UHAA-02 (2000 Watts)
UHAA-03 (3000 Watts)

SAFETY WARNING

UHAA-48 (4800 Watts)

UHAA-IOM-1E

Introduction

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as required.Your personal safety and the proper
operation of this machine depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

WARNING

CAUTIONs

NOTICE

Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in
minor or moderate injury. It could also be used to alert against unsafe practices.

Indicates a situation that could result in equipment or property-damage only
accidents.

WARNING

Proper Field Wiring and Grounding Required!

Failure to follow code could result in death or serious injury. All field wiring MUST be
performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE
and ELECTROCUTION hazards.To avoid these hazards, you MUST follow requirements for field
wiring installation and grounding as described in NEC and your local/state electrical codes.
Failure to follow code could result in death or serious injury.

WARNING

Personal Protective Equipment (PPE) Required!

Installing/servicing this unit could result in exposure to electrical, mechanical and chemical
hazards.

• Before installing/servicing this unit, technicians MUST put on all PPE required for the work
being undertaken (Examples; cut resistant gloves/sleeves, butyl gloves, safety glasses, hard
hat/bump cap, fall protection, electrical PPE and arc flash clothing). ALWAYS refer to
appropriate Material Safety Data Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA
guidelines for proper PPE.

• When working with or around hazardous chemicals,ALWAYS refer to the appropriate MSDS/
SDS and OSHA/GHS (Global Harmonized System of Classification and Labelling of
Chemicals) guidelines for information on allowable personal exposure levels, proper
respiratory protection and handling instructions.

• If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all PPE
in accordance with OSHA, NFPA 70E, or other country-specific requirements for arc flash
protection, PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING,
DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC
FLASH CLOTHING. ENSURE ELECTRICAL METERS AND EQUIPMENTARE PROPERLY RATED
FOR INTENDED VOLTAGE.

Failure to follow instructions could result in death or serious injury.

© 2015Trane All rights reserved UHAA-IOM-1E

Copyright

This document and the information in it are the property ofTrane, and may not be used or

reproduced in whole or in part without written permission.Trane reserves the right to revise this
publication at any time, and to make changes to its content without obligation to notify any person
of such revision or change.

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners.

Revision History

• UHAA-IOM-1(September1990)

Original issue of manual, specifically intended for use by experienced service technicians. Provides
installation procedures and operating instructions for "A" design sequence UHAA Electric
Architectural Forced-Air Wall Heaters.

• UHAA-IOM-1A(April 1993) Metric dimensions added

• UHAA-IOM-1 B (May 1993) U. L. changes added to wiring diagram. Heater employs a visual

• UHAA-IOM-1C (July 1994) Minor change in introduction.

• UHAA-IOM-10(April1997) Modified for Canadian use.

• UHAA-IOM-1E (Nov. 2015) U.L. standard update added page 6 for disconnect switch lockout

Introduction

alarm light to warn that parts of the heater are getting excessively hot.

instructions and revised Figure 7 wiring designations for Day/Night Relay.

UHAA-IOM-1E 3

Table of Contents

Model Number Codes ..............................................5

Important Precautions ..............................................6

Installation Instructions .............................................7

Locating the Heater .............................................. 7

Before Mounting ................................................ 8

Mounting Instructions ............................................ 8

Wiring Instructions .............................................. 9

Wiring Schematics ................................................10

Operation and Maintenance ........................................12

Pre-Start Procedures ............................................ 12

Operating Instructions .......................................... 12

Maintenance Instructions ........................................ 13

4 UHAA-IOM-1E

Model Number Codes

All standardTrane products are identified by a multiple character model number that precisely
identifies each unit. An explanation of the alphanumeric identification code used for UHAA units
is provided below. Use of the unit model number will enable the owner/operator, installing
contractors, and service technicians to define the installation, components and options for any
specific unit.

Important: Be sure to refer to the model number stamped on the unit name plate label when

ordering replacement parts or requesting service.

The following sample model number demonstrates the use of the listed codes:

Model Number: UHAA151ATADR

Digit Number 1 2 3 4 5 6789101112

Digits 1,2,3

ProductDescription

UHA = Electrical Architectural
Forced Air Wall Heater - Series
3320

Digit4

Development Sequence

A = First Generation

Digit 5,6

Unit Capacity

15 = 1500 Watts

02 = 2000 Watts

03 = 3000 Watts

04 = 4000 Watts

48 = 4800 Watts

Digit 7

Element Phase

1 = Single-Phase

Digit8

Element and Motor Voltage

A= 208 Volts

B = 240 Volts

C = 277 Volts

E = 120 Volts

Digit 9

Thermostat

T = Built-InThermostat

Digit 10

Design Sequence

A = First Design Sequence

Digit 11

Disconnect Type

D = Built-In Disconnect Switch

Digit 12

Relay (Optional)

R = Built-In Day/Night Relay

UHAA-IOM-1E 5