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Fig. 29—T7300/Q7300A,B used with single transformer 2-stage heat/1-stage cool system.
T7300
Q7300 SUBBASE
THERMOSTAT
C1
H1
FAN
CA1
CA2
T7147
REMOTE
CA3
COMFORT
ADJUST
CA4
MODULE
CA5
T
T
AUXILIARY
RELAY
CONTACTS
1
24 VAC SECONDARY; MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE.
FIELD INSTALLED JUMPER.
2
24 VAC ONLY.
3
FAN
4
MODEL
SYSTEM
SWITCH
NUMBER
SWITCH
Q7300A
NO
NO
YES
Q7300B
YES
YES
Q7300E
NO
RH
2
RC
X
C2
Y2
Y1
H2
W2
W1
G
COM
3
LED1
LED2
A1
ECONOMIZER
3
A2
A3
27
EXISTING HVAC EQUIPMENT
HVAC EQUIPMENT
TERMINAL STRIP
R
C
(IF NO "C" TERMINAL)
Y1
W1
W2
G
L1
(HOT)
L2
1
T7200/T7300/Q7300
WIRING DIAGRAMS
SYSTEM
TRANSFORMER
L1
(HOT)
L2
1
COOL 1
HEAT 1
HEAT 2
FAN
SYSTEM SWITCH
4
HEAT
OFF
COOL
AUTO
FAN SWITCH
4
ON
AUTO
M4388
63-4038—7
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