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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
205 60-2485—8
Fig. 219. Schematic and hookup of T874C with Q674C. Used in standard applications.
M5901
L1
(HOT)
L2
1
FAN RELAY
SERVICE
LED (RED)
FAN SWITCH
OFF
AUTO
SYSTEM
SWITCH
AUTO
C1
FALL
H1
FALL
2
4
8
H1
ANTICIPATOR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
MOMENTARY POSITION. SPRING RETURN TO "ON" UPON SWITCH RELEASE.
H2 OFFSET 12
o
F FROM H1.
THERMOSTAT SUBBASE SYSTEM COMPONENTS
ON
COMPRESSOR CONTACTOR 1
H2
RISE
10
MONENTARY
CIRCUIT
H2
ANTICIPATOR
HEAT RELAY 1
HEAT RELAY 2
1
6
2
2
9
CONTROL MODULE
A
W2
W1
O
G
Y1
R
W3
Y2
5
7
3
3