Honeywell CHRONOTHERM III T8611G

To Next Page

J.H. • 3-92 • © Honeywell Inc. 1992 • Form Number 69-0348—1

T8611G,R

Chronotherm III

Fuel Saver Thermostats

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,

AUTO-COOL B,Y,X

T8611R 2 1 EM.HEAT- ON- EM.HT., Manual R,C/X,L, — 5

HEAT-OFF- AUTO AUX.HT. W

,E,W

,G,

COOL O,B,Y,P

21EM.HEAT- ON- EM.HT. Manual R,B,X,W

, Exact 6

HEAT-OFF- AUTO E,W

,G,O, replacement

COOL H,Y

for York

model no.

2ET11700224.

Installation

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.

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.

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

Application

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.

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.

TRADELINE

Main Page

Need help?

Do you have a question about the Honeywell CHRONOTHERM III T8611G and is the answer not in the manual?

Honeywell CHRONOTHERM III T8611G Specifications

General

Power Source	24 VAC
Display Type	LCD
Program Schedule	7-day programmable
Programmability	Yes
Power Method	Hardwired
Operating Voltage	20-30 VAC
Voltage	24 VAC
Backlight	No
Type	Programmable Thermostat
Compatibility	Gas, oil, electric systems
Stages	1 Heat/1 Cool
Terminal Designations	R, W, Y, G