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TRADELINE
These thermostats provide energy saving control for a 24
Vac multistage heat pump heating/cooling system as indi-
cated in Table 1 and are powered directly from the control
transformer. All models have 5-1-1 programming.
As long as AC power is continuously available to trans-
former, the thermostat will be compatible with most control
systems.
The T8611G,R models include SYSTEM and ENRG
SAV LEDs near the top front of the thermostat. The SYS-
TEM LED lights when the thermostat is signaling for heating
or air conditioning. The ENGR SAV LED lights during the
LEAVE and SLEEP periods.
Thermostat
Stages
Heat
Cool
T8611G
2
T8611R
2
2
WHEN INSTALLING THIS PRODUCT...
1. Read these instructions carefully. Failure to allow
them could damage the product or cause a hazardous condi-
tion.
2. Check the ratings on the product to make sure the
product is suitable for your application.
3. Installer must be a trained, experienced service techni-
cian.
4. Allow thermostat to warm to room temperature before
operating.
5. After installation is complete, check out product op-
eration as provided in these instructions.
Application
Switching
System
1
EM.HEAT-
HEAT-OFF-
AUTO
AUTO-COOL
1
EM.HEAT-
HEAT-OFF-
AUTO
COOL
1
EM.HEAT-
HEAT-OFF-
AUTO
COOL
Installation
Fuel Saver Thermostats
The AUX. HT., EM. HT., and CHECK LEDS are located
near the bottom center of the subbase. See Table 1. The AUX.
HT. LED lights whenever the thermostat is calling for
operation of the backup or auxiliary heater. Backup (auxil-
iary) heat is more expensive to operate than the heat pump and
typically is used only when the heat pump is unable to handle
the load. The EM. HT. LED lights whenever the thermostat
system switch is in the EM. HT. position. The CHECK LED
lights when something needs to be checked to maintain
efficient operation of the system. Consult heat pump equip-
ment literature to determine specific meaning of this LED.
Heat and cool anticipation is fixed in all models; no
adjustment is necessary. Cycle rates are adjustable for auxil-
iary heating stage.
TABLE 1—Thermostat Models.
LEDs
Changeover
Fan
ON-
EM.HT,
AUX.HT.
ON-
EM.HT.,
Manual
AUX.HT.
ON-
EM.HT.
Manual
!
LOCATION
Install thermostat and subbase about 5 ft. [1.5m] above the
floor in an area with good air circulation at room temperature.
Do not install the thermostat where it may be affected
J.H. • 3-92 • © Honeywell Inc. 1992 • Form Number 69-0348—1
T8611G,R
Chronotherm III
Terminals
Auto
R, C/X, L,
W
,E,G,O,
2
B,Y,X
,X
2
1
R,C/X,L,
W
,E,W
,G,
2
1
O,B,Y,P
R,B,X,W
,
2
E,W
,G,O,
1
H,Y
1
CAUTION
1. Disconnect power supply to prevent electri-
cal shock or equipment damage.
2. After wiring is complete, push excess wire
back into the hole, and plug hole with
nonhardening caulk, putty or insulation to
prevent drafts from affecting thermostat op-
eration.
Comments
See Fig.
—
4
—
5
Exact
6
replacement
for York
model no.
2ET11700224.
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Table of Contents
Related Manuals for Honeywell CHRONOTHERM III T8611G
Summary of Contents for Honeywell CHRONOTHERM III T8611G
-
Page 1: Installation
Install thermostat and subbase about 5 ft. [1.5m] above the floor in an area with good air circulation at room temperature. Do not install the thermostat where it may be affected J.H. • 3-92 • © Honeywell Inc. 1992 • Form Number 69-0348—1 T8611G,R Chronotherm III... -
Page 2: Wiring
—unheated (uncooled) areas behind the thermostat, such as an outside wall. IF REPLACING AN EXISTING THERMOSTAT Turn off power to thermostat at furnace or heat pump. A two-transformer system may require turning off two switches or disconnects. Remove any existing wallplate or subbase from the wall. -
Page 3: Wiring And Powering
Fig. 4—T8611G 2-stage heat/1-stage cool thermostat. POWER SUPPLY SUBBASE THERMOSTAT LOGIC/ LOGIC CONTROL CIRCUIT CIRCUIT HIGH LIMIT POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. DENOTES THERMOSTAT TO SUBBASE INTERCONNECT. POSSIBLE CHECK LED CIRCUITS: TO R CHECK FAULT DETECTION... - Page 4 Fig. 5—T8611R 2-stage heat/1-stage cool thermostat. POWER SUPPLY SUBBASE THERMOSTAT LOGIC/ LOGIC CONTROL CIRCUIT CIRCUIT SYSTEM SWITCH EM. HT. HEAT COOL HIGH LIMIT POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE JUMPER FOR SYSTEM WITH ISOLATED STAGE 1 HEATING AND COOLING CONNECTIONS.
-
Page 5: Cycle Rate Adjustment
Fig. 6—T8611R 2-stage heat/1-stage cool thermostat. Exact replacement for York model no. 2ET11700224. POWER SUPPLY SUBBASE THERMOSTAT LOGIC/ LOGIC CONTROL CIRCUIT CIRCUIT HIGH LIMIT POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. REMOVE JUMPER FOR SYSTEM WITH ISOLATED STAGE 1 HEATING AND COOLING CONNECTIONS. -
Page 6: Mounting The Thermostat
MOUNTING THE THERMOSTAT With system switch set to OFF, hang the thermostat on the tabs at the top of the subbase (Fig. 9A). Swing down and press on lower edge until thermostat snaps in place (Fig. - Page 7 Perform the following test as a check of all thermostat functions. If thermostat does not respond as indicated, ther- mostat must be replaced. 1. Press AHEAD and BACK keys at the same time. While holding keys down, all segments of the display should be on, see Fig.
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Page 8: 4-Digit Code Explanation
Golden Valley, Minnesota 55422 4-DIGIT CODE EXPLANATION Second Fourth Digit Refer to Owner’s Manual for programming instructions and homeowner troubleshooting. Home and Building Control Honeywell Limited—Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9 Clock Digit (Hrs.) Degrees M 524...