1/4 400-140-000-A
1.1 Guidelines
TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN
POWER PANEL TO AVOID ELECTRICAL SHOCK.
Installation should be carried out by an electrician.
• For a new installation, choose a location about 5 ft. (1.5 m)
above the floor.
• The thermostat must be installed facing the heating system and
on an inside wall.
• Avoid locations where there are air drafts (top of staircase, air
outlet), dead air spots (behind a door), direct sunlight or con-
cealed chimneys or stove pipes.
! Remove the screw (captive) holding the base to the control
module.
" Lift the lower part of the module to remove it from the base.
# Remove the screw (captive) holding the wire cover and remove
the wire cover.
$ Pull wires through the base hole and secure the base to the
wall (or onto an electrical box for line voltage wiring) using the
enclosed wall anchors and screws.
% Wire the base to the heating system (see section 1.2) and con-
nect the remote input, if necessary (see section 1.3).
& Once wiring is complete, re-install the wire cover.
' Use the switches located at the back of the control module to
configure your thermostat (see section 1.4) according to your
application.
( Install the batteries (see section 1.5).
) Mount the control module on the base and secure using the
screw.
1.2 Thermostat Wiring
LOW VOLTAGE < 30 V: no polarity
LINE VOLTAGE 120 to 240 VAC
Must be installed onto a certified electrical box.
For a 2-wire connection: no polarity
For a 3-wire connection: respect the polarity
1. Installation
TH140-28
Electronic Programmable Thermostat
Installation Instructions
and User Guide
NORTH AMERICA
EUROPE
Connection to a
circulator through
a 24 V relay
Connection to
the thermostat
terminals of a
furnace
Connection to a
circulator (pump) of a
water heating system
Direct wiring to
the circulator
Connection to the
thermostat termi-
nals of a furnace
Wiring to a
power-operated
mixing control
valve
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