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  • Product Info
  • Literature

Overview

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

Features

  • Mercury Free
  • Classic Styling
  • Premier White®
  • The T87K heat only works with 2 or 3 wire heat-only systems

Product Specifications

Hazmat Information
UN 3091, LITHIUM METAL BATTERIES CONTAINED IN EQUIPMENT, 9
Application
1 Heat/1 Cool Conventional Systems and Heat Pumps with No Auxiliary Heat
Dimensions (in.)
3 11/16 in. diameter x 1 3/4 in. deep
Dimensions (mm)
94 mm diameter x 45 mm deep
Item Type
Product
Mounting
Round
Frequency
50 Hz; 60 Hz
Stages
1 Heat/1 Cool
Operating Humidity Range (% RH)
5 to 90% RH (non-condensing)
Supply Voltage
20 to 30 Vac
Switch Positions (System)
HEAT-OFF-COOL
Switch Positions (Fan)
AUTO-ON
Power Method
Battery assisted power stealing
Color
Premier White®
Sensor Element
Thermistor
Accuracy (F)
± 2 F
Accuracy (C)
± 1 C
Switch Type
Relay
Terminal Designations
R, Rc, W, Y, G, O, B
Changeover
Manual
Setting Temperature Range (C)
5 to 30
Cycles per Hour
Adjustable 1, 3, 5, 9
Cool Current
0.02A to 1.0A running
Heat Current
0.02A to 1.0A running
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