Table of Contents
Advertisement
Quick Links
AUTO
MULTI-STAGE • SEVEN DAY PROGRAMMABLE
Table of Contents
STEP #1 PREPARATION
STEP #2 WIRE CONNECTIONS
SAMPLE WIRING DIAGRAMS
STEP #3 TEST OPERATION
ABOUT ADVANCED FEATURES
AND OPERATION
IMPORTANT: Follow Installation Instructions carefully.
CAUTION: DISCONNECT POWER TO THE SYS-
!
TEM BEFORE INSTALLING THE NEW THERMOSTAT.
SERIOUS PERSONAL INJURY MAY RESULT.
This device complies with Part 15 of the FCC rules. Op-
eration is subject to the following 2 conditions: (1) This
device may not cause harmful interference, and (2) This
device must accept any interference received, including
interference that may cause undesired operation.
STEP #1
A. Proper installation of the thermostat will be accom-
plished by following these step by step instructions.
If you are unsure about any of these steps, call a
qualified technician for assistance.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 02-DFC535SI
Book 1
4
Tab
3e 2f
Installation Instructions
DIGITAL THERMOSTAT 53DFS250-SL
Cooling Only, Heat Cool, and Heat Pump
o
COOL
HEAT
o
1
1
2
2
2
3
5
5
PREPARATION
Printed in U.S.A.
B. Assemble tools:
Flat Blade
Wire Cutter
Screwdriver
and Stripper
C. Carefully unpack the thermostat. Save the screws,
bracket, and instructions.
D. Turn off the power to the system at the main fuse
panel. Most systems have a separate breaker for
disconnecting power to the indoor and outdoor
units.
STEP #2
Refer to the chart below, or the wiring diagrams that
follow for thermostat functions and corresponding ther-
mostat connectors.
FUNCTION
Lo Fan
Compressor
Heating
24 v Power
Common
Rev. Valve
Hi Fan
Remote Sensor +5vdc
Remote Sensor Signal
Remote Sensor Ground
Dry Contact Switch 1
Dry Contact Switch 2
Defrost
*Only used with Heat Pump systems.
Form 53-5SI
Pg 1
WIRE CONNECTIONS
INSTALL ON THE
NEW THERMOSTAT
CONNECTOR MARKED
G1
Y
H2
R
C
O*
G2
RS+5
RS
RS GND
CK1
CK2
H1
11-05
Replaces: 53-2SI
Advertisement
Table of Contents
Related Manuals for Carrier 53DFS250-SL
Summary of Contents for Carrier 53DFS250-SL
- Page 1 Installation Instructions DIGITAL THERMOSTAT 53DFS250-SL Cooling Only, Heat Cool, and Heat Pump B. Assemble tools: COOL AUTO HEAT Flat Blade Wire Cutter Screwdriver and Stripper C. Carefully unpack the thermostat. Save the screws, bracket, and instructions. D. Turn off the power to the system at the main fuse panel.
-
Page 2: Heat Pump
Sample Wiring Diagrams HEAT PUMP STEP #3 TEST OPERATION A. Turn the power on to the HVAC (heating, ventilation, and air conditioning) system. B. Press the Mode button until the HEAT icon appears on the display. Press the Up or Down buttons until the set temperature is 10 degrees above room tem- perature. - Page 3 This minimum difference is enforced during Auto Advanced Setup (cont) changeover and Program On operation. • ENERGY SAVING SMART FAN — If Fan On is selected, the fan will run continuously at all times, except in Off, and will only run if there is a heating or cooling demand in Unoccupied periods.
- Page 4 amount that they were adjusted, prior to entering About Advanced Features and Operation Auto mode. • HOLIDAY MODE — This feature forces the thermo- For example: If the Cool set point was set to 80 F stat into Unoccupied for a preset duration, up to while in the Cool mode and the Heat set point was 99 days.
-
Page 5: Troubleshooting
TROUBLESHOOTING CALIBRATION Every thermostat is calibrated before it leaves the factory. SYMPTOM CAUSE REMEDY Under normal circumstances there will never be a need When not using a There is not enough Connect a 270 ohm, to recalibrate the thermostat again. To accommodate common wire the air power available to 10 watt power resis-... - Page 8 Copyright 2005 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 02-DFC535SI Printed in U.S.A. Form 53-5SI Pg 8 11-05 Replaces: 53-2SI Book 1 3e 2f...