Emerson 750 - Manual
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Table of Contents:
- Page 2 – MOUNTING AND WIRING; CAUTION; REMOVING OLD THERMOSTAT; CONTINUED FROM FIRST PAGE; WARNING; TERMINAL CROSS REFERENCE CHART; Electric Heat or Single-Stage
- Page 3 – CHECK THERMOSTAT OPERATION; Figure 2. Typical wiring diagram for; Figure 3. Typical wiring diagram for; Figure 4. Typical wiring diagram for; Figure 5. Typical wiring diagram for; Figure 6. Typical wiring diagram for heat pump; Figure 7. Typical wiring diagram for heat pump; NOTE; Fan Operation; F, DO NOT operate the; CONTINUED FROM SECOND PAGE
- Page 4 – CONTINUED FROM THIRD PAGE; The Thermostat Buttons and Switches; C CONVERTIBILITY — The factory default setting is
- Page 5 – COOL; PROGRAMMING YOUR THERMOSTAT; Entering Your Program; Set Current Time and Day; Enter Heating Program
- Page 6 – No Heat; CONTINUED FROM FIFTH PAGE; Enter Cooling Program; If the outside temperature is below 50; Check Your Programming; SPECIFICATIONS; Operating Ambient Temperature Range:; TROUBLESHOOTING
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.
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.
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.
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
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
W 9 4
0
W 9 5
Figure 1. Thermostat base
Mounting
hole
Mounting
hole
W905
Clip for
Hydronic
System
W904
Clip for
Celsius Display
Electric/Gas
Switch
W 9 0 3
W903
Clip to
Disable
EMR
Feature
HAND OR POWER
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
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Summary
MOUNTING AND WIRING Take care when securing and routing wires so they donot short to adjacent terminals or rear of thermostat.Personal injury and/or property damage may occur. CAUTION ! ATTENTION! This product does not contain mercury. How-ever, this product may replace a unit which contains mercury...
CHECK THERMOSTAT OPERATION www.white-rodgers.com 5 RH 24 VAC 120 VAC Hot Neutral THERMOSTAT SYSTEM G W Figure 2. Typical wiring diagram for heat only, 3-wire, single transformer systems TRANSFORMER Heating System Fan Relay Y RC JUMPER WIRE O B For 2-wire Heat only, attach to RH and W NOTE RH Y 24 VA...
CHECK THERMOSTAT OPERATION CONTINUED FROM THIRD PAGE Before you begin programming your thermostat, you should befamiliar with its features and with the display and the location andoperation of the thermostat buttons. Your thermostat consists oftwo parts: the thermostat cover and the base. To remove ...
