Advertisement
3 SCREW HOLES
WITH PLASTIC
ANCHORS
HEATING-ONLY
WALLPLATE
5
WIRE WALLPLATE OR SUBBASE
NOTE: All wiring must comply with local electrical codes
and ordinances.
Refer to illustration and strip thermostat wire
insulations as necessary.
FOR STRAIGHT
CONNECTION—
STRIP 5/16 in. [8 mm]
FOR WRAPAROUND
CONNECTION—
STRIP 7/16 in. [11 mm]
FOR CT1800 heating—only
For 2-wire system, connect either wire to R terminal
and the other wire to W terminal. For 3-wire system,
connect W wire to W terminal, R wire to R terminal, and
remaining wire to B terminal. Firmly tighten screws.
Push excess wire back into wall, and plug hole in
wall with nonflammable insulation to prevent drafts
from affecting thermostat operation.
2-WIRE SYSTEM
HEATING RELAY
OR VALVE COIL
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
69-0394—3
M9612
BARRIER
M1556B
R
W
1
L2
L1
(HOT)
M2484B
FAN
3-WIRE SYSTEM
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
FOR CT1801 heating/cooling
Connect the wires to matching terminals on the
subbase.
NOTE: If there are four wires, connect wire marked R to
terminal RH and add a jumper wire to connect to RC. If
RC is left unconnected, the air conditioner will not turn
on. The 4-wire drawing on page shows how to jumper
RC to RH. Strip the insulation off the wire where it
connects to the terminals. Firmly tighten screws.
If the labels do not agree with the terminal designations on
your new subbase:
• Refer to Table 2
• Determine correct hookup from the listed control
function and the equipment control circuit.
Push excess wire back into wall, and plug hole in the
wall with nonflammable insulation to prevents drafts
from affecting thermostat operation.
4
SPIRIT LEVEL
O
B
R
W
G
Y
COOL
ON
AUTO
HEAT
OFF
R
W
B
W
HEATING
VALVE OR
MOTOR
L2
L1
(HOT)
M2419
1
M2485B
Advertisement
