TH140-28
Installation and User Guide
Electronic Programmable Thermostat
nInstallation
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 |
1.2 Thermostat Wiring
NORTH AMERICA
LOW VOLTAGE < 30 V: no polarity120/240 V
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 out- |
let), dead air spots (behind a door), direct sunlight or concealed |
chimneys or stove pipes. |
Relay
Relay
LINE VOLTAGE 120 to 240 VACConnection to a circulator through a 24 V relay
24 V transformer
Connection to the thermostat terminals of a furnace
Furnace
nLoosen the captive screw holding the faceplate to the mounting plate.
oPull the lower part of the faceplate to remove it from the mount- ing plate.
pLoosen the screw (captive) holding the wire cover and remove the wire cover.
qPull wires through the hole in the mounting plate and secure the mounting plate to the wall (or onto an electrical box for line volt- age wiring) using the enclosed wall anchors and screws.
rWire the thermostat to the heating system (see section 1.2) and, if necessary, connect the remote input (see section 1.3).
sOnce wiring is complete,
tUse the switches located at the back of the faceplate to config- ure your thermostat (see section 1.4) according to your applica- tion.
uInstall the batteries (see section 1.5).
vMount the faceplate on the mounting plate and tighten the screw.
Must be installed onto a certified electrical box.
2 A maximum load | Power supply |
|
120/240 V
Connection to a |
|
circulator (pump) | Load |
of a water heating | Provided wires |
system |
EUROPE
For a
| 240 V | Direct wiring to |
| the circulator | |
|
| |
Relay |
| Connection to the |
|
| thermostat terminals |
| Furnace | of a furnace |
|
|
Wiring to a
240 V
1/4 |
