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Environmental & Combustion Controls
T87K1007
The Round® Mercury Free Thermostat with manual changeover and R,W,Y terminals for single stage heating systems
Hazmat# UN3091 Lithium metal batteries packed in/with equipment

Locate Distributors Product Specifications   Literature and Documents
Overview
The Round® thermostats provide electronic control of 24Vac heating and cooling systems with the classic twist to set dial.

Product Prices
Package Type Product Base Price($) Order Quantity
U
1 + $62.70
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Features

• Mercury Free
• Classic Styling
• Premier White®
• The T87K heat only works with 2 or 3 wire heat-only systems
Product Specifications  Back To Top
Description The Round® Heat Only Mercury Free Thermostat
Application Heat Only
Mounting Round
Color Premier White®
Stages 1 Heat
Power Method Battery assisted power stealing
Terminal Designations R, W, Y
Switch Type Relay
Accuracy (F) ±1 F
Accuracy (C) ± 0.5 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
Heat Current 0.02 A to 1.0 A running
Sensor Element Thermistor
Operating Humidity Range (% RH) 5 to 90% RH (non-condensing)
Voltage 20 to 30 Vac

Literature and other Resources Download Back To Top
Installation Instructions - (T87K Range Stops, English, French, Spanish)
Installation Instructions - (T87K Decorator Cover Plate for T8775 Thermostat - English, French, Spanish)
Sell Sheet - (T87K1007 The Round Mercury-Free Thermostat)
T87K_HeatOnly_BW Front(Photo_BW - Web Quality Image)
T87K_HeatOnly_BW Front(Photo_BW - Print Quality Image)
T87K_HeatOnly_BW_6in Front(Photo_BW - Web Quality Image)
T87K_HeatOnly_BW_6in Front(Photo_BW - Print Quality Image)
T87K_HeatOnly_color_3in Front(Photo_Color - Web Quality Image)
T87K_HeatOnly_color_3in Front(Photo_Color - Print Quality Image)
T87K_HeatOnly_color_6in Front(Photo_Color - Web Quality Image)
T87K_HeatOnly_color_6in Front(Photo_Color - Print Quality Image)
Zone Valve Builder pack with T87K thermostat Multiple Parts(Photo_BW - Web Quality Image)
Zone Valve Builder pack with T87K thermostat Multiple Parts(Photo_BW - Print Quality Image)
Zone Valve Builder pack with T87K thermostat Multiple Parts(Photo_Color - Web Quality Image)
Zone Valve Builder pack with T87K thermostat Multiple Parts(Photo_Color - Print Quality Image)
The Round" Celsius Main(Photo_BW - Web Quality Image)
The Round" Celsius Main(Photo_BW - Print Quality Image)
The Round" Celsius Main(Photo_BW - Web Quality Image)
The Round" Celsius Main(Photo_BW - Print Quality Image)
The Round" Celsius Main(Photo_Color - Web Quality Image)
The Round" Celsius Main(Photo_Color - Print Quality Image)
The Round" Celsius Main(Photo_Color - Web Quality Image)
The Round" Celsius Main(Photo_Color - Print Quality Image)
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Product Accessories
50000066-001 - Decorative Cover Plate for T8775 or T87K,N
50010944-001 - Range Stop Assembly