Operation Manual

ManualsBrandsUPM ManualsAir ConditioningTHM302M

Press the tabs to open

the thermostat.

Back-Cover

Wall

Through Hole

Wires

Wall

Wi res

Back-Cover

Te r mina l s

Figure 1

LEVEL

Mark the locations

with a pencil

Back-Cover

Repeat the procedures for weekday program 3 and 4, and similarly for Saturady programs (P1 - P4)

and Sunday programs (P1 - P4)

After complete setting of all 12 programs,

if you have the THM302M, press PROG to return to normal display (SET PROGRAM symbol

will disappear).

If you have the THM303M, press PROG once will take you to humidity setting (seeing Humidifier

Control) or press PROG twice to return to normal display.

Note:

The PROG key can also be used

anytime to review all the set programs.

To terminate the programming

sequence at anytime, press

DISPLAY key.

Tip:

Press and hold the AHEAD/BACK or

UP/DOWN key to change the numbers

quickly.

Cooling Programs

Slide the system switch to the COOL position and repeat the programming as you would for the Heating Programs.

Note: The Humidifier Control (THM303M) only functions in HEAT mode.

Temporary Override

To change the temperature temporarily, press UP or DOWN to set the desired temperature. The OVERRIDE

symbol will appear. The thermostat will return to the regular program at the next scheduled program time.

Note: The thermostat has an automatic delay function to protect the heating and cooling systems from

undesired on/off sequences. Sometimes there will be a delay of several minutes before the thermostat

will activate the system.

Hold

This feature is to hold the thermostat at a constant temperature and disable all set programs until released.

Press HOLD once and use UP or DOWN button to set the desired hold temperature. HOLD symbol will

appear to indicate that the Hold function is active.

To cancel Hold function, press HOLD again. The HOLD symbol will disappear and the thermostat will

return to the programmed temperature.

Mounting The Thermostat Back-Cover

The back-cover should be mounted horizontally with

the terminals on the left side.

Thread the existing wiring through the big center hole

from the back and set the back-cover horizontally on

the wall.

Select two appropriate mounting holes and mark the

locations with a pencil. If necessary, use a level to make

sure the thermostat is leveled.

Remove the back-cover from the wall and drill two 3/16

inch holes in the marked screw positions. Insert the

wall-anchors into the holes completely. If necessary,

use a hammer to tap-in lightly.

Mount the back-cover with the two screws to the wall.

Make sure the metal terminals are on the left side.

Connecting The Wires To The Terminals

Connect the previously labeled wires to the corresponding

terminals, matching the designations. Use a screwdriver to

securely fasten the wires onto the terminals. Make sure the

wires do not short-circuit with other terminals.

Depending on your heating/cooling equipment, you may

need to connect 2 to 9 wires to the thermostat.

If you have two ‘R’ wires, then connect each wire to its

corresponding terminal and remove the JUMPER between

the RC and RH terminals.

If you are unsure of the connections, or for new installation,

you may refer to the wiring diagrams on the next page: