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Heating/Air Conditioning Thermostat
The TD41 is for most gas or oil heat/
electric air conditioning systems.
Do-it-yourself model
Your New TD41 Thermostat
Your new TD41 Heating/Cooling Thermostat replaces
most 15 to 30V, 4-wire, heating/cooling system thermo-
stats. The TD41 is suitable for gas or oil heat/electric air
conditioning systems (not for heat pumps).
®U.S. Registered Trademark
INSTALLATION INSTRUCTIONS
1
PREPARATION
You can properly install your new thermostat if you
follow the instructions step-by-step. It is
recommended that as you read, understand and complete
each step, you check √ it off in the box with a pencil or
pen. If you are unsure about wiring procedures, please call
a qualified service technician for assistance.
Check thermostat suitability for your home's system
by reviewing Your New TD41 Thermostat section.
Assemble tools required, as shown in illustration.
FLAT BLADE
SCREWDRIVER
WIRE CUTTER/STRIPPER OR SHARP
KNIFE, IF NEEDED TO STRIP WIRES
SPIRIT LEVEL, IF NEEDED TO LEVEL
THERMOSTAT FOR APPEARANCE
Make certain that your burner and air conditioner
(where applicable) are working, especially if they
were inoperative for any period of time. If either does not
work, contact your local heating/air conditioning dealer. Do
not operate the air conditioning system when outdoor
temperature is below 50°F (10°C).
Carefully unpack your new thermostat.
Save the package of screws and the instructions
pages.
TD41
HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED TO
DRILL HOLES IN WALL
MASKING TAPE, IF NEEDED
TO LABEL WIRES AS THEY
ARE DISCONNECTED FROM
OLD THERMOSTAT
M849
69-1122
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Table of Contents
Summary of Contents for Duracraft TD41
- Page 1 Your new TD41 Heating/Cooling Thermostat replaces most 15 to 30V, 4-wire, heating/cooling system thermo- SPIRIT LEVEL, IF NEEDED TO LEVEL stats. The TD41 is suitable for gas or oil heat/electric air THERMOSTAT FOR APPEARANCE M849 conditioning systems (not for heat pumps).
-
Page 2: Thermostat Features
TD41 HEATING/AIR CONDITIONING THERMOSTAT WIRE AND MOUNT THERMOSTAT THERMOSTAT FEATURES MOUNTING CLIPS Connect wires from the wall to the matching (FOR COVER) terminals on the back of the thermostat. Tighten the screws. MOUNTING HOLE (THERMOSTAT TO WALL OR NOTE: If terminal designations on old thermostat do not... - Page 3 TD41 HEATING/AIR CONDITIONING THERMOSTAT Recheck for level positioning, and firmly tighten both BUBBLE LEVEL mounting screws. Make sure you have the current draw anticipator setting for your system. This is the number you wrote down in Step 3. If you were unable to find the current draw for Step 3, this information can be found printed on the primary control at the furnace.
-
Page 4: Thermostat Setting
TROUBLESHOOTING may be required before the system fan turns on. Place system switch at the COOL position and move Your Duracraft Thermostat requires little or no the temperature setting lever 10°F (6°C) below attention; most problems occur as follows: room temperature. The air conditioning equipment should turn on and the system fan should turn on. - Page 5 TD41 HEATING/AIR CONDITIONING THERMOSTAT Sympton Problem Corrective Action Furnace turns on and off. Burner on period is too short. Remove the thermostat cover and move the heat anticipator counterclockwise scale mark. Replace the cover and wait several hours for the system to stabilize.
- Page 6 Southborough, MA 01772 This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Duracraft that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.
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