Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 132
Catalog No. 535-20051
Printed in U.S.A.
Form 52S-66SI
Pg 1
11-02
Replaces: New
Book 1
4
Tab
9a 11a
Installation Instructions
INTRODUCTION
These instructions cover the installation of the 52S Wall
Thermostat Interface Retrofit Kit accessory with Indoor Coil
Freeze Thermostat (IFT) to be installed on 52S packaged termi-
nal air conditioner (PTAC) products. See Fig. 1. Indoor coil
freeze thermostat protection protects the indoor coil from
freezing.
SAFETY CONSIDERATIONS
Only trained, qualified personnel and service mechanics
should install electrical accessories on packaged terminal air
conditioners or heat pumps.
PACKAGE CONTENTS
INSTALLATION
Prepare Unit
1. Check to be sure unit is off and power to unit is
disconnected.
2. Remove front panel from the unit. See Fig. 2.
3. Remove the thermostat knob (grip and pull firmly) and
discard. See Fig. 3.
4. Remove the plastic control panel cover plate (by remov-
ing 2 attachment screws) and save. See Fig. 3.
5. Remove the temperature limiter off thermostat control
shaft (grip and pull firmly) and discard. See Fig 4.
6. Open control box by removing the 2 control box cover
screws shown in Fig. 3 and swing the cover down to
open. Save the screws.
7. Remove wire ties and discard, making sure not to damage
the wires.
8. Remove Push Button Switch from control box door (by
removing 2 attachment screws) and discard screws. See
Fig. 5.
9. Remove thermostat control from control box door (by
removing 2 attachment screws) and discard screws. See
Fig. 5.
ITEM
QUANTITY
Wall Thermostat Control Panel
1
Indoor Coil Freeze Thermostat Clips
2
Control Panel Label
1
Wiring Schematic Label
1
Conversion Label
1
Hi Speed/Low Speed Label
1
Remote Wiring Access Cover
1
Wire Nut
1
Wire Ties
2
No. 10 Hex Head Screws
5
Disconnect all power to unit to avoid possible electrical
shock during installation.
52S Wall Thermostat Interface Retrofit Kit Accessory
For Use With
Packaged Terminal Air Conditioner
or Heat Pump
HI
LO
FAN SPEED
SWITCH
AS
SY
PAR
T NUM
BER:
WIRE SCHEMATIC
WALL
THERMOSTAT
CONTROL
PANEL
REMOTE WIRING
ACCESS COVER
NO. 10 HEX
HEAD SCREWS
CONVERSION
LABEL
CONTROL
PANEL LABEL
HI SPEED/LO SPEED
LABEL
WIRE TIES
WIRE NUT
INDOOR COIL FREEZE
THERMOSTAT CLIPS
WIRING SCHEMATIC
LABEL
NOTICE: THIS UNIT HAS BEEN
CONVERTED TO A REMOTE
CONTROLLED (WALL THERMOSTAT)
UNIT USING CONVERSION KIT.
WALL THERMOSTAT COMFORT
Fig. 1 — Wall Thermostat Interface Retrofit Assembly Package Contents
