Honeywell T8700B Product Data page 4

T8700B,C AN ELECTRONIC ROUND™ PROGRAMMABLE THERMOSTAT
WALL
DECORATOR
COVER PLATE
WALLPLATE
1
WHEN USING WALL ANCHORS, DRILL 3/16 INCH HOLES FOR
DRYWALL, 7/32 INCH HOLES FOR PLASTER OR WOOD.
Fig. 3. Mounting decorator cover plate
and wallplate on wall (T8700C shown).
Wiring
CAUTION
Damage To Heating/Cooling System Possible.
Be careful when handling wires
during installation.
Disconnect power at furnace or at main breaker/fuse
box.
IMPORTANT
Use an 18-gauge maximum wire for wiring the
T8700 Thermostat.
All wiring must comply with local electrical codes and
ordinances. A letter is located near each terminal for
identification.
NOTE: To ensure proper mounting of thermostat, restrict all
wiring to the left side of the terminals. See Fig. 4.
68-0197—1
ROUTE WIRING AS
SHOWN THROUGH
ENTRANCE
HOLE
PLASTIC SCREW
ANCHOR (2)
1
MOUNTING
SCREW HOLE
(Refer to Table 1 for T8700B wiring connections.)
The shape of the terminals permits insertion of straight or
M12532A
wraparound wiring connections; either method is acceptable.
See Fig. 5.
The T8700 Thermostat steals power through the heating and/or
cooling system controls and is adaptable to most, 24 Vac
systems. Refer to Fig. 6 through 11 for typical wiring hookups.
Fig. 6. T8700B1007 Heat Only wiring diagram
T8700B1015 Heat Only with Fan includes dotted line.
4
R
G
Y
W
WIRING ENTRANCE HOLE
Fig. 4. T8700C wallplate wiring connections.
Fig. 5. Wiring connections.
T8700B
R
G
W
HEATING
FAN
RELAY PRIMARY
1
CONTROL
L1
(HOT)
24V
L2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE MOUNTING
SCREW HOLE
MOUNTING
SCREW
HOLE
ALTERNATE
MOUNTING
SCREW HOLE
M12529
FOR WRAPAROUND, STRIP
7/16 IN. (11 mm)
FOR STRAIGHT INSERTION,
STRIP 5/16 IN. (8 mm)
M12537
M16005B