Carrier 53DFST2-NP Installation Instructions

Mo
PROGRAMMABLE
Table of Contents
STEP #1 PREPARATION
STEP #2 WIRE CONNECTIONS
SAMPLE WIRING DIAGRAM
STEP #3 TEST OPERATION
TROUBLESHOOTING
CALIBRATION
IMPORTANT: Follow Installation Instructions carefully.
CAUTION: DISCONNECT POWER TO THE SYS-
!
TEM BEFORE INSTALLING THE NEW THERMOSTAT.
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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 535-327
Book 1 4
Tab 3e 2f
Installation Instructions
DIGITAL THERMOSTAT 53DFST2-NP
Am
COOL
AUTO
H
EAT
1
1
2
2
2
2
Printed in U.S.A.
Heat Cool and Cooling Only
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 quali-
fied technician for assistance.
B. Assemble tools:
Flat Blade
Screwdriver
Carefully unpack the thermostat. Save the screws,
C.
bracket, and instructions.
D. Turn off the power to the system at the main fuse pan-
el. Most systems have a separate breaker for discon-
necting power to the indoor and outdoor units.
STEP #2
Refer to the chart below, or the wiring diagram that
follows for thermostat functions and corresponding
thermostat connectors.
FUNCTION
Lo Fan
Compressor
Heating
24 v Power
Common
Rev. Valve
Hi Fan
*Not applicable for use with Duct-Free Split heat pump systems.
Form 53-3SI
PREPARATION
Wire Cutter
and Stripper
WIRE CONNECTIONS
INSTALL ON THE
NEW THERMOSTAT
CONNECTOR MARKED
G1
Y
H2
R
C
O*
G2
Pg 1 11-04 Replaces: New