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OUTDOOR
FROST THERMOSTAT

FAN CYCLE
SWITCH

MOUNTING
BRACKET

THERMOSTAT
BULB

WIRING INTERFACE
KNOCKOUT

WALL THERMOSTAT CONTROL PANEL
MOUNTING SCREWS

WALL THERMOSTAT CONTROL PANEL
MOUNTING SCREW

Fig. 7 — Thermostat Bulb and Mounting Bracket

Fig. 6 — Fan Cycle Switch and 

Outdoor Frost Thermostat

Fig. 9 — Wall Thermostat Control Panel

Fig. 8 — Thermostat Wiring Knockout

Fig. 11 — Secure Control Panel (Front)

Fig. 10 — Secure Control Panel (Top)

Summary of Contents for 52S Wall Thermostat Interface Retrofit Kit

Page 1: ...ull 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...

Page 2: ...hermostat Controls 1 Remove knockout on control box cover for thermostat wiring interface See Fig 8 2 Mount wall thermostat control panel to front control box cover using 3 of the no 10 hex head screws provided See Fig 9 11 NOTE Be sure removable terminal block on control board is lined up with hole in control box cover from knockout in previous step 3 Re connect wiring to fan cycle switch See Fig...

Page 3: ...RMOSTAT CONTROL PANEL MOUNTING SCREWS WALL THERMOSTAT CONTROL PANEL MOUNTING SCREW Fig 7 Thermostat Bulb and Mounting Bracket Fig 6 Fan Cycle Switch and Outdoor Frost Thermostat Fig 9 Wall Thermostat Control Panel Fig 8 Thermostat Wiring Knockout Fig 11 Secure Control Panel Front Fig 10 Secure Control Panel Top ...

Page 4: ...control box door and secure by re attaching screws saved earlier See Fig 3 10 Reinstall plastic control panel cover using the 2 screws removed earlier See Fig 3 Install Labels and Schematics 1 Remove old wiring schematic label and install new wiring schematic label in same location See Fig 16 2 Install conversion label to front of control box See Fig 16 3 Install Hi speed Low speed label next to f...

Page 5: ...e from L2 3 Remove the following wires from the Outdoor Frost Thermostat OFT See Fig 6 a Black Wire from Terminal 2 b Blue wire that is multi linked to the gray wire in Terminal 1 is no longer needed CUT Blue wire from Terminal 1 allowing about 3 inches of wire and attach included wire nut to end of Blue wire See Fig 19 Fig 15 Sensor Clip for Indoor Coil Freeze Thermostat IFT on Typical Unit WIRIN...

Page 6: ...ack male terminal to yellow wire already attached to terminal 3 of OFT Attach both wires back on to terminal 3 of OFT 6 Secure control board ground wire green to ground screw on control box door with power cord and chassis ground wires See Fig 13 7 Remove coil filter Install Indoor Coil Freeze Thermostat IFT into coil a Use a pen to make an opening in the fins 4 in from the right side of the coil ...

Page 7: ... the capacitor Connect the other end to L2 on relay K2A1 5 Re connect the following wires on control board See Fig 12 a Yellow compressor wire to COMP on relay Kl b Power Cord wire Ll to L1 brass post terminal on relay K2 6 Secure control board ground wire green to ground screw on control box door with power cord and chassis ground wires See Fig 13 7 Remove coil filter Install Indoor Coil Freeze T...

Page 8: ...inue 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 4 Tab 9a 11a Copyright 2003 Carrier Corporation ...

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