ProThermostats.com > White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat

White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat

White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat

About This Thermostat

MFG: White-Rodgers
MFG#: 1G66-641
Our#: 101562
Programmable: No
Stages: 1 Heat
System Compatibility: Line Voltage, Heat Only
Power Options: Hardwire
Heat/Cool Changeover: None
Programmable Fan: No
Temperature Limits: No
Keypad Lockout: No
Backlight: No
Vacation Hold: No

The Type 1G66 Electric Heat Thermostat is designed for use on all types of electrical heating installations such as cable heat, baseboards, wall insert heaters, etc.
The Type 1G66 thermostat is intended for use on 240 or 277 VAC where local codes require that a double line disconnect thermostat be used. This thermostat can also be used on 120 VAC. (See specific wiring information for 120 VAC.)

Dial Setting: This thermostat may be set anywhere between 40 and 80F by simply turning the knob so the indicator on knob points to the desired setting.
The knob may be turned past 40 to the "OFF" position to obtain temporary shutdown of the heating equipment for short periods of time such as on weekends, vacation, etc. Turning knob to "OFF" position will break both sides of line.

NOTE:
Only one side of line is broken during normal cycling of this thermostat.

SPECIFICATIONS:
Switch Rating: Non-Inductive
22A (5000W) 240VAC
19A (5000W) 277VAC
22A (2500W) 120VAC
Temperature Range: 40 to 80F
Differential: 3.0F
Switch Action: Open on rise
Contact Structure: Double Line Disconnect - DPST

Dimensions: 4 13/16" H  x 3 5/16" W x 1 7/16" D

REVIEW SNAPSHOT®

by PowerReviews
White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat
 
4.2

(based on 5 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to install (3)
  • Simple controls (3)

Cons

    Best Uses

    • Home (3)
      • Reviewer Profile:
      • Homeowner (3)

    Reviewed by 5 customers

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    4.0

    Bought to control hi-amp contactors.

    By Chapel Prez

    from Sandpoint, ID

    Verified Buyer

    Comments about White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat:

    Not installed yet! Bought to contol high wattage radiant heaters via a magnetic contactor. Should work great. [...]

     
    3.0

    great, but be sure it's for you

    By jon

    from denver, co

    About Me Homeowner

    Verified Buyer

    Pros

      Cons

        Best Uses

        • Homes

        Comments about White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat:

        This is an spst switch. Used with 220v, it interrupts only one line - you must cut power to it in order to service heater. No manual off position. I use these with a sticker attached "cut power at breaker to service"

         
        5.0

        Good [...] product

        By HARRY THE HAT

        from TAMPA FLORIDA

        About Me Handyman, Homeowner

        Verified Buyer

        Pros

        • Easy To Adjust
        • Easy To Install
        • Precise Controls

        Cons

          Best Uses

          • GREAT IN MY PARK MODEL
          • Homes
          • Large Rooms
          • Small Rooms

          Comments about White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat:

          PRODUCT WAS EXACTLY WHAT I WANTED AND IT WAS EASY TOO INSTALL EVEN FOR NON ELECTRICIAN. [...]

          (1 of 1 customers found this review helpful)

           
          4.0

          works

          By myles

          from egg harbor wi

          About Me Professional

          Verified Buyer

          Pros

          • Easy To Install
          • Intuitive Controls
          • Precise Controls

          Cons

            Best Uses

            • Homes

            Comments about White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat:

            none

            (4 of 5 customers found this review helpful)

             
            5.0

            GREAT PRODUCT, WORKS GREAT

            By LOUIEBIRD

            from FORT PAYNE, ALABAMA

            About Me Homeowner

            Verified Buyer

            Pros

            • Easy To Adjust
            • Easy To Install
            • Precise Controls

            Cons

              Best Uses

              • GREENHOUSE

              Comments about White-Rodgers 1G66-641 Line Voltage Bimetal Heat Only Thermostat:

              I USED THE CONTROL FOR MY GREENHOUSE 1000WT HEAT CONTROL.
              iT SET AND HOLD A CONSTANT 70DG. TEMP.

              Displaying reviews 1-5

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