Honeywell T874 Product Data page 205

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