Schematic And Hookup Of T874G With Q674G. Used In Standard Applications - Honeywell T874 Product Data

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
THERMOSTAT
FALL
H1
H1
ANTICIPATOR
H2
H2
ANTICIPATOR
FALL
C1 RISE
C2
RISE
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
Fig. 226. Schematic and hookup of T874G with Q674G. Used in standard applications.
60-2485—8
SUBBASE
1
NO FAN
SWITCH
4
5
6
SYSTEM
SWITCH
7
OFF
8
AUTO
9
10
11
12
210
SYSTEM COMPONENTS
CONTROL MODULE
SYSTEM MONITOR
A2
SERVICE
LED (RED) HEAT RELAY #1
W1
SERVICE
SYSTEM MONITOR
LED (RED)
A1
HEAT RELAY #2
W2
T
RC
FAN RELAY B
B
RH
FAN RELAY O
O
COMPRESSOR CONTACTOR #2
Y2
COMPRESSOR CONTACTOR #1
Y1
T RELAY
L1
(HOT)
1
L2
L2
L1 1
(HOT)
M5930