Programmable Thermostat THM301M MODEL: THM301M - USER’S MANUAL (ENGLISH) DATE: Oct 2, 2003
Features: Large LCD display with backlight Real-time clock showing day, hour and minute - in selectable 12 or 24 hour display format Separate Weekday/Weekend programs with 4 programs per day Separate Heat/Cool programs with built-in protection for the air-conditioner compressor Display and set temperature in °C or °F Interface with heating or air-conditioning systems for automatic temperature control 1 THM301M - This thermostat requires two AA size batteries (included) to operate.
Back-Cover + + + + + Function Key Descriptions LCD DISPLAY + DISPLAY AHEAD PROGRAM UP SET CLOCK DOWN HOLD BACK + + FAN CONTROL RESET CURRENT 3 25 LCD Display SET HE AT COOL HOLD Temperature Weekday Program 1 Program 2 Program 3 AM PM Program 4 AM/PM mode Hour/Minute Setting Set Time and Day ! ! ! ! ! Press SET CLOCK to start time setting. Only time will be shown. (Figure 1) Use AHEAD or BACK to set the current time. Press SET CLOCK again. Weekday will be shown.
Programs + _ This thermostat is equipped with separate programming for weekdays and weekends, with four programs each. G R Y W + - + HE HG Program 1: this is typically for the morning when you may prefer a warmer temperature. Program 2: this is an energy-savings mode, for the time you are away from home. The setting can be adjusted to minimize energy consumption.
Connecting The Wires To The Terminals Heating Program Wall Back-Cover Through Hole ! Wall Wires Back-Cover + + + + + ! ! ! ! ! ! ! Slide the system switch to the HEAT position and press the PROGRAM key once, the P1 and SET symbols will appear on the display. MO to FR symbol is shown indicating Weekday program is being displayed. (Figure 3) Use AHEAD or BACK to select the desired start time for weekday program 1. Use UP or DOWN (on extreme right) to set the desired temperature.
Cooling Programs 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.
continuously to improve air ventilation. To return to automatic control, set the switch to the AUTO position.
THM301M Installation Manual If the thermostat shows an abnormal display or if you want to clear all existing programs, use a pointed object to press the ‘R’ key. Time and programs will need to be set again after a Reset. Introduction This thermostat can replace common residential thermostats and it is designed for use with most electric, oil or gas heating and air-conditioning systems that use low voltage control. Please see compatibility chart for more details.
