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1 Controls and display.............................................................................................. 2 Installation Installation guidelines............................................................................................ 3 Mounting the thermostat ....................................................................................... 4 Wiring .................................................................................................................... 5 Configuration switches .......................................................................................... 6 Operation Temperature display and setting ........................................................................... 7 Setup menu........................................................................................................... 8 Appendices In case of difficulty................................................................................................. 9 Specifications ...................................................................................................... 10 3-year limited warranty.........................................................................................11 Customer assistance........................................................................................... 12 About your new thermostat This thermostat is designed to control an electric heating system such as a baseboard heater, a convector or a fan-forced heater. The thermostat CANNOT be used with: • a resistive load under 2 A • a resistive load over 12.5 A • a system driven by a contactor or a relay (inductive load) • a central heating system SUPPLIED PARTS • One (1) thermostat • Two (2) 6-32 mounting screws • Two (2) solderless connectors Do you need assistance? We are here to help. Call 1-800-831-2823. 1 Owner’s Guide 400-109-005-A Controls and display Owner’s Guide 400-109-005-A Controls and display Backlit Screen Up button Down button Appears when the setpoint is displayed Temperature Appears when the thermostat is configured Heating intensity for a fan-forced heater indicator (the image (see page 6) disappears when heating is off) The settings are locked (see page 6) 2 TH109PLUS Installation guidelines TH109PLUS Installation guidelines TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN POWER PANEL TO AVOID ELECTRICAL SHOCK. • The installation must be performed by a qualified electrician and must comply with electrical codes of your region. • Do NOT install the thermostat in an area where it can be exposed to water or rain. • Avoid locations where there are air drafts (such as the top of a staircase or an air outlet), dead air spots (such as behind a door), or direct sunlight. • Do not install the thermostat on a wall section that conceals air ducts, chimney pipes or stove pipes. • Install the thermostat about 1.5 m (5 feet) high, on an inside wall facing the heater. • Install the thermostat onto an electrical box. • This thermostat has tinned copper wires for line and load connections. Special CO/ALR solderless connectors must be used if the thermostat will be connected to aluminium wires. • The thermostat wires are not polarized; either wire can be connected to the load or to the power supply. • Keep the air vents at the top and bottom of the thermostat clean and free from obstructions. 3 Owner’s Guide 400-109-005-A 4 .. Loosen the screw underneath the thermostat and separate the faceplate from the wallplate. NOTE: The screw remains captive and cannot be completely removed. .. Wire the thermostat (see page 5). .. Mount the wallplate to the electrical box using the provided screws. Insert the screws through the two left or right mounting holes of the wallplate. .. Set the configuration switches (see page 6) .. Reinstall the faceplate onto the wallplate and tighten the screw. NOTE: If there is a protective film or sticker on the thermostat’s screen, peel it off. .. Apply power to the heating system. Verify the installation by checking that the heating system can be turned On by raising the setpoint using the Up button or turned Off by lowering the setpoint using the Down button. Mounting the thermostat TH109PLUS 5 Connect the thermostat wires to the heating system (load) and to the power supply. Wiring 2-wire Installation 4-wire Installation Owner’s Guide 400-109-005-A Configuration switches Owner’s Guide 400-109-005-A Configuration switches Configuration switches are on the back of the faceplate. Factory settings are inside gray cells. # Parameter Up Down 1 Settings lock 1 Lock Unlock 2 Fan-forced heater 2 Fan Yes No 3 Unit °F °C 1 The thermostat buttons are disabled and appears on the screen (see page 2) when the settings are locked. 2 Place at Fan Yes if you have a fan-forced heater (to prevent premature burnout of the motor). Leave at No for better temperature regulation if you do not have a fan-forced heater. 6 TH109PLUS Temperature display and setting TH109PLUS Temperature display and setting The therm...