CT1502, continued SINGLE STAGE HEAT PUMP (WITHOUT AUXILIARY HEAT) SYSTEM
I-
-1 For CT1503 750-millivolt heating Connect either wire to R terminal and the other wire to W terminal. Firmly tighten screws. Push excess wire back into wall, and plug
0
hole in wall with nonflammable insulation to prevent drafts from affecting thermostat operation. 0 0 /
1
L'

+

(HOT) u+
A
POWER SUPPLY PROVIDE DISCONNECT
MEANS
AND
OVERLOPD
PROTECTION AS REQUIRED
A
IFCOMPRESSOR
ISCONNECTEDTO OLDTHERMOSTATS
"YTERMINAL WITH A JUMPERTO"W, USE NEW THERMOSTATS
"PTERMINAL FORCOMPRESSOR. IFOLOTHERMOSTATHAS
ONE WIRETO"Y"AND0NE TO
"W.
USt'Y
AND
"W'ON
NEW
THERMOSTAT,
DO NOT
USE"P.
IMPORTaNT-
IF
OLD
THERMOSTAT USES
A
W2 (AUXILIARY
OR
EMERGENCY HEAT)
TERMINAL, THIS THERMOSTAT MAY NOT BE USED THIS
THERMOSTAT
IS
NOT DESIGNED
TO
CONTROL
AUXILIARY
HEAT
M211511

A

SOMEHEATPUMPSUSE"B"INSTEAD0F"O'
Connect the wires to matching terminals on Push excess wire back into wall, and plug prevent drafts from affecting thermostat operation.
0
the subbase. Firmly tighten screws.
0
hole in wall with nonflammable insulation to
CQZOOA
OR
0313A
THERMOPILE
M24IB
9 69-0273-9