background image

1C20 – Heating Only

1C26 – Heating & Cooling

INSTALLATION AND OPERATION INSTRUCTIONS

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY 
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE 
PERSONAL INJURY AND/OR PROPERTY DAMAGE.

Operator: Save these instructions for future use!

2

YOUR  THERMOSTAT REPLACES

Description

1C20

1C26

Standard Heating & Cooling Systems - 4 or 5 wires

No

Yes

Standard Heat Only Systems

Yes

Yes

Millivolt Heat Only Systems - Floor or Wall Furnaces

Yes

Yes

Standard Central Air Conditioning

No

Yes

Gas or Oil Heat

Yes

Yes

Electric Furnace

Yes

Yes

Hydronic (Hot Water) Zone Heat - 2 Wires

Yes

Yes

Hydronic (Hot Water) Zone Heat - 3 Wires

No

No

Heat Pump (No Aux or Emergency Heat)

No

Yes

Heat Pump (with Aux or Emergency Heat)

No

No

Baseboard Electric Heating or Line Voltage (120 or 240 Volt)

No

No

MOUNTING SCREWS

Содержание White-Rodgers 1C20

Страница 1: ...iption 1C20 1C26 Standard Heating Cooling Systems 4 or 5 wires No Yes Standard Heat Only Systems Yes Yes Millivolt Heat Only Systems Floor or Wall Furnaces Yes Yes Standard Central Air Conditioning No Yes Gas or Oil Heat Yes Yes Electric Furnace Yes Yes Hydronic Hot Water Zone Heat 2 Wires Yes Yes Hydronic Hot Water Zone Heat 3 Wires No No Heat Pump No Aux or Emergency Heat No Yes Heat Pump with A...

Страница 2: ...PARATIONS 1 WIRE CUTTER STRIPPER SPIRIT LEVEL OR PLUMB BOB AND LINE OPTIONAL THERMOSTAT MUST BE LEVEL TO WORK PROPERLY FLAT BLADE SCREWDRIVER HAND OR POWER DRILL WITH 3 16 INCH DRILL BIT IF NEEDED THERMOSTAT FEATURES 2 SUBBASE MODEL 1C26 ONLY BASE COVER ANTICIPAT OR CAPTIVE SCREWS MOUNTING SCREWS SUBBASE MODEL 1C26 ONLY BASE COVER ANTICIPAT OR CAPTIVE SCREWS Figure 1 Adaptor Plate optional ...

Страница 3: ...ed by unscrewingthemountingscrewsthatholditonthewall or adaptor plate Make a note here of the anticipator setting on the old thermostat for future reference and use in step 5 The heat anticipator pointer if adjustable will be set at one of a series of numbers representing the current rating of the primary control in your furnace The number will be one of the following 2 4 8 etc or 0 2 0 4 0 8 etc ...

Страница 4: ...ctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat If your system is an electric heat or heat pump system that REQUIRES the thermostat to turn on the fan on a call for heat remove the yellow factory installed jumper wire from the Y terminal and connect it to the A terminal This will allow the thermostat to energize the fan immediately on a call for heat...

Страница 5: ... G W W W H 4 W Y Y Y C Y6 Y These are four wire single transformer systems Factory installed jumper wire between the RH and RC terminals must remain in place requiresthethermostattocontrolthefan contactaqualified heating and air conditioning service person Forsinglestageheatpumpapplications noauxillaryheat install a short jumper wire not included across terminals W and Y If the system has a revers...

Страница 6: ... switch is in the AUTO position the fan will cycle with the heating or cooling system the fan will not run if the system switch is in the OFF position and the fan switch is in the AUTO position When the fan switch is in the ON position the fan will run continuously regardless of system switch position even if the system switch is set to OFF the fan will run if the fan switch is in the ON position ...

Страница 7: ...oom temp Heat Cool or Fan Runs Constantly 1 Possible short in wiring 2 Possible short in thermostat 3 Possible short in heat cool fan system Check each wire connection to the thermostat to verify it is neatly looped under the terminals No extra wire should stick out from under the terminals Furnace Cycles Too Fast or Too Slow Narrow or wide temperature swing See Step 5 Adjusting the Anticipator Th...

Отзывы: