Emerson 1F79-111 - User Manual
Emerson 1F79-111 Thermostat – User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – MOUNTING AND WIRING; CAUTION; REMOVING OLD THERMOSTAT; CONTINUED FROM FIRST PAGE; WARNING; °F or °C Selection; BATT
- Page 3 – MOUNTING AND WIRING; CONTINUED FROM SECOND PAGE
- Page 4 – CHECK THERMOSTAT OPERATION
- Page 5 – CHECK THERMOSTAT OPERATION; CONTINUED FROM FOURTH PAGE; SPECIFICATIONS; Symptom; TROUBLESHOOTING; Configuration Menu
- Page 6 – CONTINUED FROM FIFTH PAGE; No Heat
- Page 7 – NOTES
Installation Instructions for
Heating & Air Conditioning
1F79
Non-Programmable
Heat Pump Thermostat
CONTENTS
Preparations .................................................. 1
Thermostat Details ........................................ 1
Removing Old Thermostat .......................... 1-2
Mounting and Wiring ................................... 2-3
Check Thermostat Operation ...................... 4-5
Specifications ................................................ 5
Troubleshooting .......................................... 5-6
1
PREPARATIONS
2
THERMOSTAT DETAILS
3
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 using
the labels enclosed with the new 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. 37-6499B
Replaces 37-6499A
1122
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
WIRE CUTTER/STRIPPER
HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED
FLAT BLADE SCREWDRIVER
SPIRIT LEVEL OR PLUMB BOB AND LINE OPTIONAL—
THERMOSTAT DOES NOT NEED TO BE LEVEL TO WORK PROPERLY
Figure 1. Thermostat base
W905
Clip for Slow Cycle
(current location)
W904
Clip for Celsius
(current location)
Mounting
hole
W906 for Emergency
Heat Second Stage
Fan Control
O/B
Terminal
Switches
Selection
O/B
Mounting
hole
W904 & W905
(location on earlier models)
W2
E
O/B R
G
C
Y
L
Description
Heat Pump (No Aux or Emergency Heat)
Yes
Heat Pump (with Aux or Emergency Heat)
Yes
Standard Heat & Cooling Systems
No
Standard Heat Only Systems
No
Millivolt Heat Only Systems – Floor or Wall Furnaces
No
Standard Central Air Conditioning
No
Gas or Oil Heat
No
Electric Furnace
No
Hydronic (Hot Water) Zone Heat – 2 Wires
No
Hydronic (Hot Water) Zone Heat – 3 Wires
No
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Summary
2 4 MOUNTING AND WIRING Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat. Personal injury and/or property damage may occur. CAUTION ! ATTENTION! This product does not contain mercury. However, this product may replace a unit which contains me...
3 MOUNTING AND WIRING CONTINUED FROM SECOND PAGE 4 L R E 24 VAC 120 VAC Hot SYSTEM MONITOR SWITCH Neutral THERMOSTAT SYSTEM G W2 Figure 2. Typical wiring diagram for single transformer systems TRANSFORMER (Class II) Changeover Relay* C Y O/B Compressor Contactor * Changeover Relay is energized in CO...
4 CAUTION ! 5 CHECK THERMOSTAT OPERATION NOTE To prevent static discharge problems, touch side of ther-mostat to release static build-up before touching any keys. If at any time during testing your system does not operate properly, contact a qualified serviceperson. Fan Operation If your system does...
