Honeywell CT8611 User Manual
Honeywell
CT8611
Heat Pump
Thermostat Wiring Guide
Home and Building Control
Ploneywell Inc.
1985 Douglas Drive North
Golden Valley, Minnesota 55422
J. H. ■ Prinred in Tiuwnn * Furm NiiTflbcr 69-OE17 • [
Hone^ell
Helping You CotHrol Your World
HOWTO USE THIS GUIDE
Before you disconnect the wires and remove your existing
thermostat, make certain this new thermostat, see Figs. 1
and 2, will replace it and that you understand how you will
reconnect the wiring. To do that, proceed as follows:
Step 1
Find the manufacturer of your heat pump in the Table of
Contents, and turn to the appropriate page.
Step 2
Expose the wiring on your current thermostat {the subbase)
and check that the terminals on your existing thermostat
coincide with the teminals shown in the second column
(Existing thermostat wiring).
if they do, read and follow the installation instructions provided
with the thermostat.
If they do not, call Honeywell Customer Assistance toll free at
1-800-468-1502, Monday-Friday, 7:00 a.m. - 5:30 p.m. Central
time, to make certain you can safely use this thermostat to
control your heat pump.
Before you call, please have the following information
available — thermostat model number and date code, heat
pump model number and manufacturer, and number of wires
connected to the thermostat. The date code is usually stamprid
on the back of the thermostat and is a four-digit number, e.g.,
9346.
NOTICE: ! his equipment is a Class B digital apparatus,
which complies with Canadian Radio Interference
Regulations, CRC c. 1374.
TABLE OF CONTENTS
How to Use This Guide..................................................................... 3
Heat Pumps are Different................................................................ 6
Heat Pumps are Two Systems in One............................................ 7
Definitions of Terminal Functions.................................................8,9
Heat Pump Manufacturers.........................................................12-23
Amana........................................................................................12
American Standard .
Arcoaire................................................................................... 14
Bard...........................................................................................13
Borg Warner
B.D.P. (Bryant-Day/Night-Payne)............................................15
Carrier....................................................................................... 16
Comfortmaker...........................................................................14
Friedrich.................................................................................. 17
Heil Quaker
Janitrol..................................................................................... 13
Lennox...................................................................................... 19
Luxaire (Moncrief, Fraser, Johnston)......................
Rheem...
Ruud....................................................................................... 20
Snyder General.........................................................................14
Tappan.................................................................................... 13
Tempstar
Trane
Whirlpool
..........................................................................
................................................................................
.........
..................
.........
Williamson...
York..............................................................................................22,23
...........
..................................................
........................................................................
..............
..................................................................18
...................................
.......................................................................IS
.................!...............................................
.............................21
21
22,23
18
22
...20
13
HEAT PUMPS ARE DIFFERENT
HEAT PUMPS ARE TWO SYSTEMS IN ONE
• Heat pun>p systems usually
have a supplemental,
“second stage" heating
system that operates only
when necessary. This heat
pump thermostat is designed
to minimize more expensive
second-stage operation,
indicated by the green AUX
light on your switching
subbase.
• With this thermostat, you will notice that your compressor
operates continuously during the recovery period. This may
appear to waste energy, but actually is more efficient.
Multiple ON-OFF cycles are neither necessary to achieve
comfort, nor are they as efficient for heat pump systems. By
reducing the number of cycles, you reduce the strain on
your system and extend equipment life.
MILD WEATHER
INDOORS
■ AUXILIARY
HEATING
ELEMENT
OFF
INDOOR
AIR
In mild westher, virtuafiy all of the demand for heat in buildings
can be met by the heat pump compressor. This "First Stage"
process o\ moving heat indoors is very economical. As the
air becomes colder outside, the first stage may be unabfe to
deliver enough heat to maintain the desired comfort /evef
m the buiiding.
SEVERE WEATHER
OLrnKWRS
INDOORS
AUXILIARY
> HEATING
EUCMCNT
ON
i INDOOR
t AIR
During high heat demand, the thermostat wiU call for additiorm!
“Second Stage"power from the auxiliary heat system. This
auxiliary tieat is commonty electric “resistance" heat and is two
to three times more expensive to operate than the compressor.
If you have specific questions concerning the the operation of
your heat pump, please contact the equipment manufacturer.
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