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60-2222 - T87F Family
PRODUCT DATA
60-2222-3
® U.S. Registered Trademark
Copyright © 2002 Honeywell All Rights Reserved
T87F Thermostats
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.
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.
T87F Easy-to-
See Round
Model
T87F Designer
Model
T87F Standard
Model

Contents
Application.........................................................................1
Features ............................................................................1
Specifications ....................................................................2
Ordering Information .........................................................2
Installation .........................................................................3
Wiring ................................................................................4
Settings and Checkout ......................................................7
Operation...........................................................................8
Recalibration .....................................................................8 T87F THERMOSTATS
60-22223
2
SPECIFICATIONS
IMPORTANT
This product is tested and calibrated under closely
controlled conditions and some minor differences in
performance can be expected if those conditions are
changed. The specifications in this publication do not
include normal manufacturing tolerances; therefore,
an individual unit may not exactly match the listed
specifications.
Tradeline® Models:
For use in series 80 heating, cooling, or heating-cooling
circuit, or for use in series 20 (spdt) heating only circuit.
Tradeline® specifications are the same as those of standard
models, except as follows:
T87F Heating, Cooling, or Heating-Cooling Thermostat.
T87F Enhanced Setpoint Visibility Model for the visually
impaired.
T87F models that meet Department of Defense (DoD) Manual
4270.1-M specifications.
Model for heating. control. Locking cover, without thermome-
ter, 72°F (22°C) maximum heat.
Model for cooling control, locking cover, without thermometer,
78°F 26°C) minimum cool.
T87F with locking cover, range stops 35°F to 65°F (2°C to
18°C) range.
Temperature Ratings:
Setting Range:
Most models: 40°F to 90°F (4°C to 32°C).
Models with positive Off: 50°F to 90°F (10°C to 32°C).
Mounting:
T87F (without positive Off) furnished with 137421A Wallplate.
T87F (with positive Off) furnished with 137421B Wallplate.
Both wallplates suitable for controlling 2-wire spst heating or
cooling, 3-wire spdt heating-cooling, or 3-wire spdt series
20 heating systems.
Additional Tradeline® Features:
Cover ring included for covering old thermostat marks or for
mounting T87F on outlet box.
137421 Wallplate extends beyond thermostat for trim appear-
ance (198170A Wallplate for Designer Models).
Tradeline® pack with cross reference label and special
instruction sheet.
Standard Models:
T87F Heating, Cooling, or Heating-Cooling Thermostat. Ther-
mostat includes 104456B Wallplate for heating only sys-
tems. Order Q539 Subbase for heating-cooling.
Electrical Ratings: 1.5A at 30 Vac.
Heat Anticipator: Adjustable 0.1 to 1.2A.
Cooling Anticipator: 0 to 1.5A, 24 Vac to 30 Vac.
Temperature Ratings: 50°F to 100°F (10°C to 38°C).
Switching Action: Dust-free spdt mercury switch.
Temperature Sensing: Coiled bimetal.
Dimensions:
T87F: 3-1/4 in. (82.5 mm) diameter, 1-1/2 in. (38 mm) deep.
With 137421 Wallplate: 3-11/16 in. (93.5 mm) diameter, 1-3/4
in. (44.5 mm) deep.
With Q539 Subbase: 3-11/16 in. (93.5 mm) diameter, 1-3/4 in.
(44.5 mm) deep.
Mounting: Thermostat mounts on furnished wallplate, or sub-
base (order separately).
Finish: Premier White® or taupe.
Optional Specifications:
Positive Off Models (specify heating or cooling):
60°F to 100°F (16°C to 38°C) or 50°F to 90°F (10°C to
32°C) range.
Locking Cover and Range Stop Models:
60°F to 90°F (16°C to 32°C).
45°F to 75°F (7°C to 24°C) range, 68°F marked on scale.
Scale Range Models:
40°F to 90°F (4°C to 32°C).
45°F to 75°F (7°C to 24°C).
5°C to 30°C (67°F to 112°F).
10°C to 30°C (67°F to 86°F).
10°C to 35°C (67°F to 95°F). T87F THERMOSTATS
3
60-22223
Accessories:
Q539 Subbasesprovide system and fan switching and cool-
ing anticipation (unless otherwise specified) for T87F heat-
ing, cooling and heating-cooling thermostats.
TG587F1008 Thermostat Guard Key Lock Cover with window.
TG587F1016 Thermostat Guard Key Lock cover without
window.
104456B Two terminal heat only T87 Wallplate.
137421AE-T87 Taupe Wallplate with positive Off.
137421K-T87 Taupe Wallplate without positive Off.
137421R-T87 White Wallplate.
198170A Designer Beige Adapter Kit.
198172 Cover Ring for T87 Designer Beige models.
199933 Cover Ring for Taupe T87 models.
114855-00029 Cover Ring for Gold T87 models.
137421A-T87 Gold Wallplate without positive Off.
137421B-T87 Gold Wallplate with positive Off.
221886A Easy-to-Use Clear Ring. Durable plastic ring
snaps on Easy-to-See models.
202687A Premier White® Adapter Kit includes 6 in. cover
assembly and adapter ring to mount on outlet box or cover
marks from old thermostats.
32005439-001 Taupe Adapter Kit includes 6 in. cover assem-
bly and adapter ring to mount on outlet box or cover marks
from old thermostat.
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old control
in the trash. Dispose of properly.
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of an old control.
INSTALLATION
CAUTION
Voltage Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before beginning installation.
CAUTION
Equipment Damage Hazard.
Improper installation can burn out thermostat heat
anticipator.
On systems using a low voltage gas valve, do not
apply a jumper across the valve coil terminals.
When Installing this Product. . .
1. Read these instructions carefully. Failure to follow them
could cause a hazardous condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained experienced service techni-
cian.
4. After installation is complete, check out product opera-
tion as provided in these instructions.
Location
Locate the thermostat about 5 ft (1.5m) above the floor in an
area with good air circulation at average temperature.
Do not install the thermostat where it can be affected by:
drafts, or dead spots behind doors and in corners.
hot or cold air from ducts.
radiant heat from sun or appliances.
concealed pipes and chimneys.
unheated (uncooled) areas such as an outside wall behind
the thermostat.
This thermostat is a precision instrument and was carefully
adjusted at the factory. Handle it carefully.
Mount Wallplate or Subbase
IMPORTANT
Use a spirit level to accurately level the wallplate or
subbase as shown in Fig. 1. Inaccurate leveling may
cause the thermostat to deviate from setpoint.
When using the T87F with a Q539 Subbase, follow
the mounting and wiring instructions for the subbase.
Use the cover ring (if desired), adapter plate (if needed),
wallplate or subbase, T87F and screws as shown in Fig. 2 and
3.
IMPORTANT
Before mounting the thermostat, see Setting and
Checkout section, Heat Anticipator Adjustment sub-
section.
1. Place the cover ring on the wall at the desired location
with the cable entrance holes to the left.
NOTE: If an outlet box is used, place the cable entrance
holes toward the bottom. The side showing MADE IN
U.S.A. must be against the wall.
2. Pull the thermostat cable through the entrance hole of
the cover ring and the entrance hole of the wallplate or
subbase and adapter plate (if used).
3. Fasten the cover ring, adapter plate (if used), and the
wallplate or subbase.
4. Level the wallplate as shown in Fig. 1 and tighten the
screws.
5.