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Carrier 53DFS250-HW, Installation Manual, Page: 2 / 12

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Carrier 53DFS250-HW Installation Manual Download Page 2

Installation Guide

2

69-2565—05

Wallplate installation

Power options

For 24VAC primary power, connect common 

side of transformer to “C” terminal.

24 VAC

3.0 VDC

Install two AA alkaline batteries on the 

back of the thermostat as marked

M32487

Drill 3/16” holes for drywall. 

Drill 7/32” holes for plaster.

Wire hole

Mounting 

 

screws

Wall anchors

M32488

C

G1

Y

O

RC

R

H2

NOT

USED

G2

S1
S2

M28101

7+(50267$7

:,5(+2/(

0

:$//3/$7(

1.  Separate wallplate from 

thermostat. Grasp top and bottom 

of wallplate and pull to remove 

from thermostat.

2.  Install the wallplate as shown 

below.

Summary of Contents for 53DFS250-HW

Page 1: ...r local waste management authority for instructions regarding recycling and proper disposal Must be installed by a trained experienced technician Read these instructions carefully Failure to follow these instructions can damage the product or cause a hazardous condition Select Thermostat Location Select a location for the thermostat about 5 ft 1 5m above the floor in an area with good air circulat...

Page 2: ...lkaline batteries on the back of the thermostat as marked M32487 Drill 3 16 holes for drywall Drill 7 32 holes for plaster Wire hole Mounting screws Wall anchors M32488 C G1 Y O RC R H2 NOT USED G2 S1 S2 M28101 7 50267 7 5 2 0 3 7 1 Separate wallplate from thermostat Grasp top and bottom of wallplate and pull to remove from thermostat 2 Install the wallplate as shown below ...

Page 3: ... non flammable insulation Terminal Designations R 24 Volt power Rc Not used 1 C 24 Volt common H2 2nd stage heat electric heat Y Compressor G1 Low speed fan G2 High speed fan O Reversing valve for heat pumps S1 Remote sensor or remote setback 2 S2 Remote sensor or remote setback 2 Wiring Notes 1 Leave the metal jumper wire in place between Rc and R 2 Sensor wire must have a cable separate from the...

Page 4: ... FAN NOT USED COMPRESSOR 24V POWER NOT USED COMMON NOT USED NOT USED NOT USED INDOOR TEMPERATURE SENSOR REMOTE SETBACK CHANGEOVER PIPE SENSOR FACTORY INSTALLED JUMPER JUMPER WIRE O TO Y1 REQUIRED WHEN HEAT PUMP INDOOR IS USED WITH COOLING ONLY OUTDOOR UNIT WIRE IS FIELD SUPPLIED 1 2 2 C G1 Y O RC R 1 M32490A H2 NOT USED G2 S1 S2 H2 H1 W2 C O R Y Y1 G1 G2 G3 AIR SWEEP FUNCTION NOT AVAILABLE UNIT TE...

Page 5: ...e a temperature averaging network Wiring four C7189U 10K ohm Sensors to provide a temperature averaging network M27481 S1 S2 T T SUBBASE TR21 T T TR21 T T TR21 T T TR21 M27482 S1 S2 SUBBASE TR21 A T4 T3 TR21 A T4 T3 1 1 1 THE TR21 A IS A 10K OHM SENSOR M27483 T4 T3 TR21 A 1 1 THE TR21 A IS A 10K OHM SENSOR S1 S2 T T SUBBASE TR21 T T TR21 M27432 WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT ...

Page 6: ...o place Remove tab and mount thermostat WALL M23024 Set date and time Press st to change the Month Year Date or Time setting Press DONE to save changes Month Year Date Press GO BACK and NEXT to select the Month Year Date or Time function Press DONE to save and exit Installer setup 1 Press SYSTEM and FAN 2 Press and hold SYSTEM and DONE until the display changes 3 Change settings as required see pa...

Page 7: ...70 Cycles Per Hour CPH for heating first and second stage 9 Recommended Other options 1 12 CPH 0280 Continuous Backlight 0 No 1 Yes 0300 Changeover 1 Auto 0 Manual 0310 Deadband 3 3 F 2 0 C Options 2 9 F 1 5 5 0 C 0320 Temperature Indication Scale 0 F 1 C 0330 Daylight Saving Time 1 ON 0 OFF 0340 Remote Temp Sensor Remote Setback Changeover Input 0 None 1 Remote 10K Indoor 2 Remote 20K Indoor 0340...

Page 8: ...me 3 3 minutes 4 4 minutes 5 5 minutes 0600 Heat Temperature Range Stops 90 90 F 32 C Options 40 90 F 4 32 C 0610 Cool Temperature Range Stops 50 50 F 10 C Options 50 99 F 10 37 C 0640 Clock Format 12 12 Hour 24 24 Hour 0650 Extended Fan on time Heat 0 Off 90 90 seconds 0660 Extended Fan on time Cool 0 Off 40 40 seconds 0670 Keypad Lockout 0 Unlocked 1 Partial Lockout 1 Locks out schedule and syst...

Page 9: ...iew Clock More Next Go Back AM Done TEST1 During installer setup press NEXT repeatedly until Test appears Test number System status Press NEXT to select test Press st to change status Press DONE to terminate testing 1 Installer Test Cool 0 Off 1 Cool Stage 1 On 2 Installer Test Fan 0 Off 1 Low 2 Med 3 High 3 Installer Test Heat 0 Off 1 Heat Stage 1 On 2 Heat Stage 2 On 4 Installer Test EM Heat 0 O...

Page 10: ...on the display Special Programmable Mode Functions Installer Setup 0160 allows the thermostat to be configured for either a mode with a programmable 7 day schedule or as a non programmable thermostat Preoccupancy purge ISU 0185 This feature is available only when the thermostat is configured as a programmable schedule and when a fan is used The fan will run 1 3 hours before the occupied schedule s...

Page 11: ... thermostat and heating equipment Check for 24 Vac between the heat terminal Y and H2 and transformer common If voltage is not present check wire connection loose or broken between the thermostat and the heating equipment Cooling does not turn on Cool On is solid in the display Cooling equipment failure Check for 24 Vac at the equipment on the secondary side of the transformer between power and co...

Page 12: ... 5 to 90 non condensing Physical Dimensions 3 3 4 H x 6 W x 1 3 8 D 95 mm H x 152 mm W x 35 mm D Electrical Ratings Terminal Voltage 50 60Hz Running Current H2 Heating 20 30 Vac 0 02 1 0 A Y Cooling 20 30 Vac 0 02 1 0 A G Fan 20 30 Vac 0 02 0 6 A Specifications Please contact your distributor to order replacement parts Indoor Sensor Part Number P350 ISEN CM20 Indoor Sensor Part Number P350 ISEN CM...

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