White Rodgers 750 User Manual
CONTENTS
Preparations .................................................. 1
Thermostat Details ........................................ 1
Removing Old Thermostat ............................ 1
Mounting and Wiring ..................................... 2
Check Thermostat Operation ........................ 3
Programming your Thermostat ..................... 4
Specifications ................................................ 6
Troubleshooting ............................................ 6
PREPARATIONS
THERMOSTAT DETAILS
REMOVING OLD THERMOSTAT
Before removing wires from old thermostat’s switching subbase,
label each wire with the terminal designation it was removed from.
label each wire with the terminal designation it was removed from.
1. Remove Old Thermostat: A standard heat/cool thermostat
consists of three basic parts:
a. The cover, which may be either a snap-on or hinge type.
b. The base, which is removed by loosening all captive screws.
c. The switching subbase, which is removed by unscrewing
the mounting screws that hold it on the wall or adaptor plate.
2. Shut off electricity at the main fuse box until installation is
complete. Ensure that electrical power is disconnected.
3. Remove the front cover of the old thermostat. With wires still
attached, remove wall plate from the wall. If the old thermostat
has a wall mounting plate, remove the thermostat and the wall
mounting plate as an assembly.
has a wall mounting plate, remove the thermostat and the wall
mounting plate as an assembly.
4. Identify each wire attached to the old thermostat.
5. Disconnect the wires from the old thermostat one at a time. DO
NOT LET WIRES FALL BACK INTO THE WALL.
6. Install new thermostat using the following procedures.
To prevent electrical shock and/or equipment damage,
disconnect electrical power to the system at the main
fuse or circuit breaker until installation is complete.
disconnect electrical power to the system at the main
fuse or circuit breaker until installation is complete.
CAUTION
!
PART NO. 37-6319D
Replaces 37-6319C
0435
Failure to follow and read all instructions carefully
before installing or operating this control could cause
personal injury and/or property damage
before installing or operating this control could cause
personal injury and/or property damage
Assemble tools required as shown below.
YOUR THERMOSTAT REPLACES
1
2
3
WIRE CUTTER/STRIPPER
W
RH
B
RC
G
O
Y
+
-
+
-
GAS
ELEC
0
W9 4
0
W9 5
Figure 1. Thermostat base
Mounting
hole
Mounting
hole
W905
Clip for
Hydronic
System
W904
Clip for
Celsius Display
Electric/Gas
Switch
W903
W903
Clip to
Disable
EMR
Feature
HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED
FLAT BLADE SCREWDRIVER
Installation Instructions for
Heating & Cooling
Digital Model 750
5/2 Day Programmable
Thermostat
Description
750
Standard Heat & Cooling Systems – 4 or 5 wires
Yes
Standard Heat Only Systems
Yes
Millivolt Heat Only Systems – Floor or Wall Furnaces
Yes
Standard Central Air Conditioning
Yes
Gas or Oil Heat
Yes
Electric Furnace
Yes
Hydronic (Hot Water) Zone Heat – 2 Wires
Yes
Hydronic (Hot Water) Zone Heat – 3 Wires
No
Heat Pump (No Aux or Emergency Heat)
Yes
Heat Pump (with Aux or Emergency Heat)
No
Baseboard Electric Heating or Line Voltage (120 or 240 volt)
No
WHITE-RODGERS
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
www.white-rodgers.com
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
www.white-rodgers.com