Carrier 52S Wall Thermostat Interface Retrofit Kit Installation Instructions Manual
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Carrier 52S Wall Thermostat Interface Retrofit Kit Installation Instructions Manual

Carrier 52S Wall Thermostat Interface Retrofit Kit Installation Instructions Manual

For use with packaged terminal air conditioner or heat pump
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Table of Contents

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
ITEM
Wall Thermostat Control Panel
Indoor Coil Freeze Thermostat Clip
Control Panel Label
Wiring Schematic Label
Conversion Label
Hi Speed/Low Speed Label
Remote Wiring Access Cover
Wire Nut
Wire Ties
No. 10 Hex Head Screws
WALL
THERMOSTAT
CONTROL
PANEL
REMOTE WIRING
ACCESS COVER
NO. 10 HEX
HEAD SCREWS
Fig. 1 — Wall Thermostat Interface Retrofit Assembly Package Contents
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 132
Book 1
4
Tab
9a 11a
52S Wall Thermostat Interface Retrofit Kit Accessory
Installation Instructions
QUANTITY
1
1
1
1
1
1
1
1
2
5
CONVERSION
LABEL
Catalog No. 535-20060
Printed in U.S.A.
Packaged Terminal Air Conditioner
INSTALLATION
Disconnect all power to unit to avoid possible electrical
shock during 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.
HI SPEED/LO SPEED
LABEL
WIRE NUT
HI
LO
WIRE
WALL THERMOSTAT COMFORT
Form 52S-67SI
Pg 1
For Use With
or Heat Pump
WIRE TIES
INDOOR COIL FREEZE
THERMOSTAT CLIP
WIRING SCHEMATIC
LABEL
CONTROL
PANEL LABEL
9-03
Replaces: 52S-66SI

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Summary of Contents for Carrier 52S Wall Thermostat Interface Retrofit Kit

  • Page 1 52S Wall Thermostat Interface Retrofit Kit Accessory For Use With Packaged Terminal Air Conditioner or Heat Pump Installation Instructions INTRODUCTION INSTALLATION 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- Disconnect all power to unit to avoid possible electrical nal air conditioner (PTAC) products.

  • Page 2: Select Unit

    TEMPERATURE LIMITER Fig. 4 — Temperature Limiter Fig. 2 — Removing Front Panel PUSH BUTTON THERMOSTAT CONTROL PANEL SWITCH COVER PLATE KNOB WIRING SCHEMATIC STANDARD PTAC MODELS PUSH BUTTON SWITCH THERMOSTAT CONTROL ATTACHMENT SCREWS ATTACHMENT SCREWS CONTROL BOX CONTROL PANEL COVER COVER SCREWS PLATE ATTACHMENT SCREWS Fig.
  • Page 3 OUTDOOR FROST THERMOSTAT FAN CYCLE SWITCH Fig. 9 — Wall Thermostat Control Panel Fig. 6 — Fan Cycle Switch and Outdoor Frost Thermostat MOUNTING THERMOSTAT WALL THERMOSTAT CONTROL PANEL BRACKET BULB MOUNTING SCREWS Fig. 7 — Thermostat Bulb and Mounting Bracket Fig.
  • Page 4 4. Re-connect the following wires on control board. See 9. Close the control box door and secure by re-attaching Fig. 12. screws saved earlier. See Fig. 3. a. Violet heater wire to Heat2 on relay K2A1. 10. Reinstall plastic control panel cover using the 2 screws removed earlier.

  • Page 5: Installation Completion

    3. Make thermostat wiring connection (5 wires) to remov- HEAT PUMP UNITS able terminal block on control board, accessible through Remove Existing Controls the opening for thermostat wiring interface. 1. Remove ALL 3 wires (yellow, white and orange) from a. R to R (24 VAC) the fan cycle switch.
  • Page 6 c. Power Cord wire (Ll) to L1 (brass post terminal) on relay K2. d. One of the 2 black reversing valve wires to RVS (no polarity). e. Remaining black reversing valve wire to L2 (brass post terminal) on relay K2A1. NOTE: Black reversing valve wires are molded together in a 2-wire bundle.

  • Page 7: Cooling Only Units

    4. Install new control panel label over the old control panel on the capacitor. Connect the other end to L2 on relay label to cover holes left by removal of old controls and K2A1. refer guests to the wall-mounted thermostat. See Fig. 16. 5.
  • Page 8 Copyright 2003 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 132 Catalog No. 535-20060 Printed in U.S.A. Form 52S-67SI Pg 8 9-03 Replaces: 52S-66SI Book 1...

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