Honeywell T87F Series Product Data
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Honeywell T87F Series Product Data

Easy-to-see round, designer and standard model
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T87F Easy-to-
T87F Designer
See™ Round
Model

APPLICATION

T87F Thermostats provide temperature control for residential
heating, cooling, or heating-cooling systems. The T87F is
designed with a dustproof spdt mercury switch, an adjustable
heat anticipator and a concealed wallplate for 2-wire heating
hookups. The Tradeline® T87F wallplate is designed for 2-
wire heating or cooling, 3-wire spdt heating (series 20), or 3-
wire spdt heating-cooling with remote switching. The wallplate
also provides cooling anticipation.
The Q539 Subbase may be added for system and fan
switching. The Q539 Subbase also provides cooling
anticipation.
® U.S. Registered Trademark
Copyright © 2002 Honeywell • All Rights Reserved
T87F Standard
Model
Model
T87F Thermostats

FEATURES

• For 24 Vac to 30 Vac control of heating or cooling
systems.
• Thermostat cover ring may be painted to match room
decor.
• Knurled dial provides easy setpoint adjustment.
• Separate temperature setting and thermometer scale
located on face of thermostat.
• T87F distinctive style makes an attractive addition to
almost any decor.
• Enhanced setpoint visibility model available for the
visually impaired.
Application.........................................................................1
Features ............................................................................1
Specifications ....................................................................2
Ordering Information .........................................................2
Installation .........................................................................3
Wiring ................................................................................4
Settings and Checkout ......................................................7
Operation...........................................................................8
Recalibration .....................................................................8
PRODUCT DATA
Contents
60-2222-3

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Summary of Contents for Honeywell T87F Series

  • Page 1: Table Of Contents

    The Q539 Subbase also provides cooling anticipation. Contents Application.................1 Features ................1 Specifications ..............2 Ordering Information ............2 Installation .................3 Wiring ................4 Settings and Checkout ............7 Operation................8 Recalibration ..............8 ® U.S. Registered Trademark Copyright © 2002 Honeywell • All Rights Reserved 60-2222-3...

  • Page 2: Specifications

    T87F THERMOSTATS SPECIFICATIONS IMPORTANT Standard Models: This product is tested and calibrated under closely controlled conditions and some minor differences in T87F Heating, Cooling, or Heating-Cooling Thermostat. Ther- performance can be expected if those conditions are mostat includes 104456B Wallplate for heating only sys- changed.

  • Page 3: Installation

    T87F THERMOSTATS Accessories: Q539 Subbases—provide system and fan switching and cool- 3. Installer must be a trained experienced service techni- ing anticipation (unless otherwise specified) for T87F heat- cian. ing, cooling and heating-cooling thermostats. 4. After installation is complete, check out product opera- TG587F1008 Thermostat Guard Key Lock Cover with window.

  • Page 4: Wiring

    T87F THERMOSTATS THERMOSTAT 104456B WALLPLATE CABLE OUTLET BOX SPIRIT LEVEL ENTRANCE HOLES MOUNTING SLOTS BE SURE WALL HOLE IS PLUGGED TERMINAL MOUNTING 137421 SCREWS SLOTS WALLPLATE 127293 COVER RING 137421A,B,D WALLPLATE SPIRIT LEVELING LEVEL POSTS (2) CAPTIVE Q539 SUBBASE MOUNTING SCREWS (3) T87F IF OUTLET BOX IS HORIZONTAL, MOUNT COVER RING IN POSITION...
  • Page 5 T87F THERMOSTATS T87F T87F TEMPERATURE FALL TEMPERATURE FALL THERMOSTAT THERMOSTAT ADJUSTABLE ADJUSTABLE HEAT HEAT ANTICIPATOR ANTICIPATOR 104456B 137421A,B WALLPLATE WALLPLATE COOLING ANTICIPATOR TO SYSTEM CONNECTIONS TO SYSTEM CONNECTIONS HEATING ONLY THERMOSTAT TRADELINE THERMOSTAT MODEL WITH POSITIVE OFF SWITCH OPENS THE THERMOSTAT CIRCUIT MODEL WITH POSITIVE OFF SWITCH OPENS THE THERMOSTAT WHEN SETPOINT DIAL IS MOVED TO THE OFF POSITION.
  • Page 6 COMBINATION FAN AND — Before connecting the T87F to a three-wire con- LIGHT CONTROLLER THERMOSTAT trol, consult the manufacturer. LIMIT — Some Honeywell series 10 relays require an R-B jumper (see Fig. 11). These relays are: R114A,B R125 R117 R187A1,A4 R116 R126...

  • Page 7: Settings And Checkout

    T87F THERMOSTATS LOW LIMIT JUMPER OPERATING CONTROL SETTINGS AND CHECKOUT TO THERMOSTAT T87F CONNECTIONS ON SERIES 10 VALVE AT BURNER Temperature Selection To select the desired temperature, turn the transparent dial SERIES 10 OPEN until the desired point on the setting scale (top scale) is in line CIRCUIT HIGH LIMIT M6102 with the pointer.

  • Page 8: Operation

    NOTE: When the T87F provides cooling control, calibration for heating automatically calibrates for cooling. Automation and Control Solutions Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 Printed in U.S.A.

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