Hunter 40120 Manuel utilisateur

Electronic/Mechanical

Thermostat

Model 40120

installation and

operation manual

44018-01 04-01-2008

For assistance with wiring or operation, our Technical

Support Group is available from 8 am to 5 pm CST.

they may be reached toll-free at 1-888-830-1326.

Table of Contents

Important Information ....................................... 5

Tools ................................................................. 6

Uninstalling the Existing Unit............................ 9

Installing the Thermostat ................................ 12

Installing the wall plate ................................... 14

connecting the wires........................... 15

attaching the thermostat ..................... 17

Operation........................................................ 20

Indicators & Adjustments................................ 22

Troubleshooting.............................................. 25

Wiring Diagrams............................................. 27

Congratulations!

Thank you for choosing a Hunter thermostat.

Your new Hunter thermostat will provide years of

reliable service and year-round energy savings.

Please read this manual before beginning

installation and save this booklet for complete

operation instructions.

Electronic/Mechanical

Thermostat

Model 40120

This thermostat is designed to work on the following

heating and cooling systems:

Gas – Standing Pilot

Gas – Electronic Ignition

Gas – Fired Boilers

Gas – Millivolt Systems

Oil – Fired Boilers

Oil – Fired Furnace

Electric Furnace

This thermostat is not designed for heat pump

systems or 110/220 V baseboard heating systems.

If you are unsure what kind of heating and cooling

system you have, please contact a qualied HVAC

Technician for assistance.

IMPORTANT INFORMATION

This thermostat includes two #8 slotted screws and

two wall anchors for mounting.

To install your new thermostat, you will need the

following supplies:

Flat-head screwdriver

......................................................................................

Small Phillips-head screwdriver

......................................................................................

Hammer

......................................................................................

Electric drill and 3/16” bit

......................................................................................

Two fresh 1.5 Volt (AA) size alkaline batteries

......................................................................................

TOOLS

NOTICE! Do not disconnect the wires

from the existing thermostat before

reading these instructions. The wires

must be labeled prior to removal to

ensure proper reconnection.

1. Turn the system power OFF from the existing

thermostat. Turn the power to the HVAC

system OFF at the main power panel or at the

furnace.

2. Remove the existing thermostat cover to

access the wires from the wall.

(Some thermostats may have multiple covers, screws

or other locking devices that must be removed or

disengaged.)

3. Locate, but do not disconnect the wires.

(If wires are not visible, they may be connected to the

back of the wall plate. Some models may have doors

that open to expose the wires and mounting screws.)

UNINSTALLING THE EXISTING UNIT

If your existing

thermostat is marked...

label the wire

with this sticker:

RH / R / VR / 4

24 Volt

W / H

heating

G / F

fan

* See page 27 for complete wiring diagram.

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