Honeywell Chronotherm IV T8602D Installation Instructions Manual page 2

T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS
NO
WIRES
THROUGH WALL
WALL
ANCHORS (2)
Fig. 2. Mounting the wallplate.
WIRING
All wiring must comply with local electrical codes and
ordinances. Refer to Fig. 3 through 6 for typical hookups.
A letter code is located near each terminal for
identification.
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment
damage.
Disconnect power before wiring.
69-1510-4
NO
Fig. 1. Typical location of thermostat.
WALL
MOUNTING
HOLES
MOUNTING
SCREWS
M15044
YES
NO
1.5 METERS
(5 FEET)
1. Loosen the terminal screws on the wallplate and
connect the system wires. See Fig. 7.
IMPORTANT
Use 18 gauge, color-coded thermostat cable for
proper wiring.
2. Securely tighten each terminal screw.
3. Push excess wire back into the hole.
4. Plug the hole with nonflammable insulation to pre-
vent drafts from affecting the thermostat.
RC Y
2
COMPRESSOR
CONTACTOR
FAN
RELAY
L1
(HOT)
L2
1
COOLING
TRANSFORMER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2 JUMPER RC TERMINAL TO R TERMINAL WHEN INSTALLED ON A
ONE TRANSFORMER SYSTEM.
3
AVAILABLE ON SELECT MODELS. OT WIRES MUST HAVE A
SEPARATE CABLE FROM THE THERMOSTAT CABLE.
Fig. 3. Typical hookup in heat and cool
system with two transformers.
2
M10856
THERMOSTAT
G W R OT
HEAT
RELAY
OUTDOOR
TEMPERATURE
SENSOR
HEATING
TRANSFORMER
OT
3
1
L1
(HOT)
L2
M10855