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Environmental & Combustion Controls
T87N1000
The Round® Mercury Free Thermostat with manual changeover and R, Rc, W, Y, G, O, B terminals for single stage heating and cooling systems

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Overview
The Round® thermostats provide electronic control of 24Vac heating and cooling systems with the classic twist to set dial.

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Features

• Classic Styling now Mercury Free
• Separate temperature setting and thermometer
• Available in Heat/Cool and Heat Only Models.
• The Easy-To-See™ has enlarged scale and raised numbers--plus it click at every 2ºF change.
Product Specifications  Back To Top
Description The Round® Heat and Cool Mercury Free Thermostat
Application 1 Heat/1 Cool Conventional and Heat Pumps with No Auxiliary Heat
Mounting Round
Changeover Manual
Color Premier White®
Stages 1 Heat/1 Cool
Power Method Battery assisted power stealing
Terminal Designations R, Rc, W, Y, G, O, B
Switch Positions (Fan) AUTO-ON
Switch Positions (System) COOL-OFF-HEAT
Switch Type Relay
Accuracy (F) ±1 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 to 90
Electrical Ratings 20 to 30 Vac
Frequency 50 Hz
Frequency 60 Hz
Cycles per Hour Adjustable 1, 3, 5, 9
Cool Current 0.02-1.2A running
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

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