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Honeywell CHRONOTHERM III T8611G User Manual

Honeywell thermostat user manual.
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T8611G,R
TRADELINE
Chronotherm III
Fuel Saver Thermostats
Application
The AUX. HT., EM. HT., and CHECK LEDS are located
near the bottom center of the subbase. See Table 1. The AUX.
These thermostats provide energy saving control for a 24
HT. LED lights whenever the thermostat is calling for
Vac multistage heat pump heating/cooling system as indi-
operation of the backup or auxiliary heater. Backup (auxil-
cated in Table 1 and are powered directly from the control
iary) heat is more expensive to operate than the heat pump and
transformer. All models have 5-1-1 programming.
typically is used only when the heat pump is unable to handle
As long as AC power is continuously available to trans-
the load. The EM. HT. LED lights whenever the thermostat
former, the thermostat will be compatible with most control
system switch is in the EM. HT. position. The CHECK LED
systems.
lights when something needs to be checked to maintain
The T8611G,R models include SYSTEM and ENRG
efficient operation of the system. Consult heat pump equip-
SAV LEDs near the top front of the thermostat. The SYS-
ment literature to determine specific meaning of this LED.
TEM LED lights when the thermostat is signaling for heating
Heat and cool anticipation is fixed in all models; no
or air conditioning. The ENGR SAV LED lights during the
adjustment is necessary. Cycle rates are adjustable for auxil-
LEAVE and SLEEP periods.
iary heating stage.
TABLE 1—Thermostat Models.
Thermostat
Stages
Switching
LEDs
Changeover
Terminals
Comments
See Fig.
Heat
Cool
System
Fan
T8611G
2
1
EM.HEAT-
ON-
EM.HT,
Auto
R, C/X, L,
4
HEAT-OFF-
AUTO
AUX.HT.
W
,E,G,O,
2
AUTO-COOL
B,Y,X
,X
2
1
T8611R
2
1
EM.HEAT-
ON-
EM.HT.,
Manual
R,C/X,L,
5
HEAT-OFF-
AUTO
AUX.HT.
W
,E,W
,G,
2
1
COOL
O,B,Y,P
2
1
EM.HEAT-
ON-
EM.HT.
Manual
R,B,X,W
,
Exact
6
2
HEAT-OFF-
AUTO
E,W
,G,O,
replacement
1
COOL
H,Y
for York
1
model no.
2ET11700224.
!
CAUTION
Installation
WHEN INSTALLING THIS PRODUCT...
1. Disconnect power supply to prevent electri-
1. Read these instructions carefully. Failure to allow
cal shock or equipment damage.
them could damage the product or cause a hazardous condi-
2. After wiring is complete, push excess wire
tion.
back into the hole, and plug hole with
2. Check the ratings on the product to make sure the
nonhardening caulk, putty or insulation to
product is suitable for your application.
prevent drafts from affecting thermostat op-
3. Installer must be a trained, experienced service techni-
eration.
cian.
4. Allow thermostat to warm to room temperature before
LOCATION
operating.
Install thermostat and subbase about 5 ft. [1.5m] above the
5. After installation is complete, check out product op-
floor in an area with good air circulation at room temperature.
eration as provided in these instructions.
Do not install the thermostat where it may be affected
J.H. • 3-92 • © Honeywell Inc. 1992 • Form Number 69-0348—1

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   Summary of Contents for Honeywell CHRONOTHERM III T8611G

  • Page 1

    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

    —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

    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, Installing Batteries

    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 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.

  • Page 8

    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...

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