Honeywell T87F User Manual

T87F
Easy-to-See™ Thermostats
INSTALLATION INSTRUCTIONS

APPLICATION

The Easy-to-See™ 24 Vac Thermostats are:
Model Application Includes
Heating or
T87F
Heating/Cooling
a
For heating/cooling, order the Q539 Subbase, which provides System and Fan switches at the thermostat location.
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.
T87F3467/T87F5199
a
Thermostats and 137421A Wallplate.

INSTALLATION

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 technician.
4. After installation is complete, check out product operation as provided in these instructions.
CAUTION
1. Disconnect power supply to prevent electrical shock or equipment damage.
2. To prevent interference with the thermostat linkage, keep wire length to a minimum and run wires as close as possible to the subbase.
3. Do not overtighten thermostat captive mounting screws, because damage to subbase threads can result.
4. Do not short across coil terminals on relay. This can burn out the thermostat heat anticipator.
IMPORTANT
An incorrectly leveled thermostat can cause the temperature control to deviate from setpoint.

Location

Install the thermostat between 4 ft (1.2m) and 5 ft (1.5m) above the floor. Locate in an area with good air circula­tion at average temperature.
NOTE: Due to the height restrictions of some disabled
users, it may be necessary to lower the thermo­stat location to 4 ft (1.2m) above the floor.
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
When using the thermostat with a Q539 Sub­base, follow the mounting and wiring instruc­tions furnished with the subbase.
NOTE: To mount the thermostat on an outlet box, order
129044A Adapter Ring Assembly.
® U.S. Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved
69-0200-6
T87F EASY-TO-SEE™ THERMOSTATS
A
)
)
1
1. Hold wallplate in position and mark holes for anchors. See Fig. 1. Obtain wall anchors locally. Be careful that the wires do not fall back into the wall opening. Set aside the wallplate. Drill four 3/16 in. (4.6 mm) holes and gently tap anchors into the holes until flush with the wall.
2. Pull electrical wires through the wallplate opening. See Fig. 1.
3. Secure the wallplate with the screws provided. Do not fully tighten the screws.
4. Level the wallplate using a spirit level. See Fig. 1. Firmly tighten the mounting screws. The mounting holes provide for minor out-of-level adjustments.
MOLDED POST (2)
MOUNTING HOLE (3)
OPENING FOR THERMOSTAT WIRING (PLUG)t (WITH INSULATION)
137421K WALLPLATE
SPIRIT LEVEL
MOUNTING SLOT (3)
M394B
Fig. 1. Level wallplate before mounting thermostat.

Wiring

All wiring must comply with local electrical codes and ordinances. Follow equipment manufacturer ’s wiring instructions when available.
The thermostat is adaptable to most two-wire and three­wire (series 10 spdt) 24 Vac to 27 Vac heating systems. To wire wallplate, proceed as follows:
1. Connect the system wires to the wallplate as shown in Fig. 2 through 6. A letter code is near each terminal for identification.
2. Firmly tighten each terminal screw.
3. Fit wires as close as possible to the wallplate. Push
excess wire back into hole.
4. Plug hole with nonflammable insulation to prevent drafts from affecting the thermostat.
COMBINATION FAN AND LIMIT CONTROL
L1 (HOT)
1
L2
BURNER MOTOR
IGNITION
THERMOSTAT
Y
R
W
CAD CELL
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED. R8184 PROTECTORELAY OIL PRIMARY CONTAINS
2
INTERNAL TRANSFORMER
3
CONNECT OIL VALVE, IF APPLICABLE.
R8184G
T
2
T F
F
OIL VALVE
WHITE
ORANGE
BLACK
Fig. 2. Typical oil heating system.
COMBINATION FAN AND
THERMOSTAT
R
W
GAS VALVE TH
TR
TH
TR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
LIGHT CONTROLLER
LIMIT
TRANSFORMER
Fig. 3. Typical gas heating system.
THERMOSTAT
Y
R
COOLING
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
Note that R and Y terminals are used.
CONTACTOR COIL
Fig. 4. Typical cooling only system.
FAN
FAN MOTOR
FAN MOTOR
M6105
L1 (HOT
L2
M610
3
L1 (HOT L2
M6103
1
1
69-0200-6 2
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