Changing Batteries; Installation - NOMA THM301M User Manual

Installation

The following tools may be required for installation:
Cross (Phillips) screwdriver
Masking Tape
(To wrap the exposed wires temporarily and labeling
the disconnected wires)
Wire Stripper/Cutter
(If necessary, to strip the wires)
See below to select a suitable place for the new thermostat installation. And refer to "Replacing Old
Thermostat" section to replace old thermostat.
17
12/24 Hour Display Format
Press both AHEAD and BACK keys together at the same time to change the time display from 12
hour format to 24 hour format (e.g. 8:00pm / 20:00) and vice versa.

Changing Batteries

When all digits on the LCD display flashes, it indicates that the batteries are running low and have to
be replaced. However, it is recommended for the batteries to be replaced every year even if display is
not flashing yet. To replace batteries:
Set the thermostat system switch to the OFF position and have the new batteries on-hand.
Open the thermostat by pressing on the 2 tabs on the top.
Remove the old batteries and install new ones quickly.
Close the thermostat to its original position.
If new batteries are inserted within 20 seconds of removing the old ones, the existing time and
programs will not be cleared. Otherwise, the display will show 9:00a.m. and the thermostat will have
to be re-programmed.
12
Hand Power Drill with a 3/16 inch bit
( If necessary, to drill holes on the wall )
Level
(If necessary, to level the thermostat)
Two AA size batteries (included)
- AA SIZE +
- AA SIZE +
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.
The symbols HEAT or COOL on the display will be flashing when heating or cooling is activated.
Pre-Comfort Recovery
This thermostat is equipped with a 'Pre-Comfort Recovery' system that will activate the heating or
cooling in advance of the actual set program time so that the room will be at the desired temperature
at the start of the comfort program time.
It is normal for the system to be activated earlier (up to ½ hour for heating and one hour for cooling)
than the actual set program time.
11
Compatibility
Generally, equipment with low voltage control is compatible with the THM301M thermostat. For
details on compatibility of your particular equipment, please call our technical assistance line.
System Type
Gas - Standing Pilot
Gas - Electronic Ignition
Gas - Fire Boiler
Gas - Millivolt System
Oil - Fire Boilers
Oil - Fire Furnace
Electric Furnace
Electric Air Conditioner
Baseboard Electric Heater (120/240V)
Heat Pump/Multi- Stage equipment
* Not compatible with any 120/240 volt circuit
16
Compatible with THM301M
Yes
Yes
Some models
Yes
Some models
Yes
Yes
Yes
No
No