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60-0830—4 2
Fig. 1—Leveling wallplate or subbase with
spirit level or plumb line.
SPIRIT
LEVEL
LEVELING
POSTS (2)
MOUNTING
SLOTS
M3319A
OPENING FOR
THERMOSTAT
WIRING
Fig. 2—Mounting wallplate or subbase to wall.
M5324
WALLPLATE
SHOWN
THERMOSTAT CABLE
ENTRANCE HOLES
COVER RING
MOLDED
LEVELING
POST
NO. 4 X 1 INCH
SHEET METAL SCREWS (2)
ADD T87F AS
SHOWN ON OUTLET
BOX MOUNTING
WIRING
All wiring must comply with local electrical codes
and ordinances. Disconnect power supply before con-
necting wiring to prevent electrical shock or equipment
damage.
The T87F is adaptable to most 2-wire, 24 to 30 volt
heating systems, and to most 3-wire, 24 to 30 volt
heating systems controlled by a Series 10 Thermostat.
The following hookups are typical applications. See
Figs. 3 through 7. When using the T87F for cooling
control, refer to the hookups in the Q539 Subbase in-
structions.
For variations of these systems, refer to the installa-
tion instructions for the controlled equipment.
After wiring the wallplate, plug the hole to prevent
drafts that may affect the thermostat.
Fig. 3—T87F used for 2-wire, spst control of
heating only in a typical oil system. Low
voltage power for the control circuit is supplied
by a transformer in the oil primary control.
L1 (HOT)
L2
COMBINATION
FAN AND LIMIT
CONTROL
FAN
MOTOR
BURNER
MOTOR
THERMOSTAT
Y
R
W
CAD
CELL
1
2
R8184G
WHITE
ORANGE
BLACK
IGNITION
OIL VALVE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
R8184 PROTECTORELAY OIL PRIMARY CONTAINS
INTERNAL TRANSFORMER.
CONNECT OIL VALVE, IF APPLICABLE.
2
1
T
F
M6105
T
F
3
3
Fig. 4—T87F used for 2-wire, spst control of
heating only in a typical gas system.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
M5318
137421A
WALLPLATE
COMBINATION
FAN AND LIMIT
CONTROL
L1
(HOT)
L2
FAN
MOTOR
TRANSFORMER
GAS VALVE
R
Y
W
TH
TR
TRTH
LIMIT
FAN
1
1
Fig. 5—T87F replacing a Series 10 Thermostat
connected to a 3-wire, open-contact, high-limit
control.
LOW LIMIT
OPERATING CONTROL
T87F
SERIES 10 OPEN
CIRCUIT HIGH LIMIT
JUMPER
TO THERMOSTAT
CONNECTIONS ON
SERIES 10 VALVE
AT BURNER
M6102
B
W
R
Y
R
W
B
W
R
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