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69-0920
7
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE
ON
AUTO
FAN
C1
FIELD WIRING CONNECTION
DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT
CO
G
Y
O
R
HEAT
H1
E
SUPL. HEAT
H2
SUPL. HEAT
L
W2
SUPL. HEAT
HEAT
HEAT
C
SUPL. HEAT
COOL
OFF
8
9
1
6
4
10
H2 ANTICIPATOR
1
SUPL. HT.
LED (RED)
M4566
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
1
SYSTEM COMPONENTSSUBBASETHERMOSTAT
L1
(HOT)
L2
1
H1
FALL
H2
FALL
2
4
6
O
G
R
W
2
E
L
C
Y
CO
RISE
C1
RISE
8
9
10
H1 ANTICIPATOR
C1 ANTICIPATOR
SYSTEM
SWITCH
SUPL. HT.
COOL
OFF
FAN
SWITCH
AUTO
ON
FAN RELAY
COOL CHANGEOVER VALVE
OUTDOOR
THERMOSTAT
HEAT RELAY 1
HEAT RELAY
CONTACT 1
HEAT RELAY 2
HEAT RELAY
CONTACT 2
HEAT RELAY 3
2
COMPRESSOR
CONTACTOR 1
N.O. SWITCH – INSTALLER ADDED, TO LIGHT EM. HT. LED
WHEN COMPRESSOR OPERATION IS NOT NORMAL.
2
2
COMPRESSOR
FAULT
HEAT
Fig. 7. Y594G1666 Thermostat/Subbase switching and internal connections.