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UPM THM303M Manual

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current program
current temperature
relative humidity
Check Programs
The current program is displayed on the lower right-hand
section of the LCD screen.
Press PROG anytime to scroll through and check all other programs.
Room Temperature
Current temperature is displayed on the mid-section of the LCD screen.
Relative Humidity
Relative humidity is displayed on the left-hand section of the LCD screen.
Humidifier Control (THM303M only)
The humidifier control only works if the humidifier is connected to the thermostat. Please refer to the
Installation Guide for connection details.
To set the humidity level, first you must scroll to the end of the 12 programs by pressing PROG. The
SET HUMID symbol will appear and the humidity level setting will be flashing.
Use UP or DOWN to set the humidity level in increments of 5%. Press PROG to exit.
The humidifier will turn on if the room humidity is lower than the set humidity level. Humidity level can
be set from 20% to 70%.
Note: The humidifier control only functions in HEAT mode.
Fan Control Switch
For automatic control of the fan, set the Fan ON/AUTO switch to the AUTO position. In cooling, the
fan starts/stops with the cooling equipment. In heating, the fan is controlled by the heating equipment
and usually starts a few minutes after the heating equipment turns on.
To turn on the fan manually, set the Fan ON/AUTO switch to the ON position, the fan will run continuously
to improve air ventilation. To return to automatic control, set the switch to the AUTO position.
Heat/Cool Control Switch
If this switch is on the OFF position, both the heating and cooling systems are turned off, and all
programs and settings will be disabled.
Slide the switch to HEAT or COOL to control the heating or air-conditioning system.
will display when the switch is on the HEAT position.
will display when the switch is on the COOL position.
The symbols HEAT or COOL on the display will be flashing when heating or cooling is activated.
Choosing Location For New Thermostat
Thermostat should be mounted:
Approximately 5 ft (1.5m) from floor.
Near or in a frequently used room, preferably on an inside partitioning wall.
On a section of wall without pipes or duct-work
Thermostat should NOT be mounted:
Near a window, on an outside wall, or next to a door leading outside.
Exposed to direct light or heat from a lamp, sun, fireplace, or other temperature-radiating objects which
may cause false readings.
Near or in direct airflow from supply registers and return-air grilles.
Near concealed pipes and chimneys
In areas with poor air circulation, such as behind a door or in an alcove.
After choosing a location for the new thermostat, you may arrange to have a heating contractor install
the control wiring for you.
Replacing Old Thermostat
Note: Do not operate the cooling system when outside temperature is below 10 C (50 F) to avoid
damaging the compressor.
Test the system to make sure that your heating and cooling are working properly before installation.
If either does not work, contact your local heating/air-conditioning dealer to fix the problem before
installation.
TURN OFF POWER to system at the furnace, or at the fuse/circuit breaker panel.
Carefully unpack your new thermostat and mounting plate; save package of screws, instructions
and receipt.
Remove cover from old thermostat. If it does not snap off when pulled firmly from the bottom, check
for a screw used to secure the cover.
Loosen screws holding thermostat to the wall and lift away the thermostat.
Disconnect wires from old thermostat or sub-base. As you disconnect each wire, use masking tape
to label it with the old terminal designation. If there are only two wires, they don't need to be labeled.
If there is an extra wire that is not connected to your old thermostat, then you won't need to connect
it to the new thermostat.
Take care not to let the wires fall back into the wall or let the ends of the wires touch one another.
The wires are usually designated 'W', 'Y', 'G', 'RH', 'RC', 'O', 'B', 'H1', 'H2'.
°°
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