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Honeywell Round Mercury Free Heat Only Thermostat

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The Round® Mercury Free Thermostat with manual changeover and R,W,Y terminals for single stage heating systems

Mercury Free
. Classic Styling
. Premier White®
. Separate temperature setting and thermometer
. The T87K heat only works with 2 or 3 wire heat only systems
. The Easy-To-SeeT has enlarged scale and raised numbers--plus it click at every 2ºF change

Description- The Round® Heat Only Mercury Free Thermostat
Application- Heat Only
Mounting- Round
Color- Premier White®
Stages- 1 Heat
Power Method- Uses stored power from heating controls.
Terminal Designations- R, W, Y
Switch Type- Relay
Accuracy (F)- 2 F
Accuracy (C)- 1 C
Dimensions (in.)- 3 11/16 in. diameter x 1 3/4 in. deep
Dimensions (mm)- 94 mm diameter x 45 mm deep
Setting Temperature Range (F)- 40 F to 90 F
Frequency- 60 Hz;50 Hz
Cycles per Hour Adj.- 1,3,5,9
Heat Current- 0.02-1.2A running
Sensor Element- Thermistor
Operating Humidity Range (% RH)- 5 to 90% RH (non-condensing)
Voltage- 20 to 30 Vac