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T7200/T7300/Q7300
WIRING DIAGRAMS
Fig. 46—Q7300L for single-stage conventional heating systems with single-stage cooling.
T7300
THERMOSTAT
C
COOL
LED
FAN
H
HEAT
LED
MICROPROCESSOR
CONTROL
POWER
SUPPLY
COMMUNICATION
COMMUNICATION
LINES
RS1
RS2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
FOR SINGLE SPEED FAN JUMPER GL AND GH.
REFER TO T7147 INSTRUCTIONS FOR APPROPRIATE CA TERMINAL CONNECTIONS. T7407 HAS T-T TERMINALS ONLY.
3
63-4038—7
Q7300L
2K RELAY
1K RELAY
4K1
3K RELAY
FAN
ON
AUTO
AUTO
SYSTEM
SWITCHING
SUBBASE RELAY
CONTROL AND
COMMUNICATION
(INCLUDES 4K
AND 5K RELAYS)
EXISTING HVAC EQUIPMENT
R
Y
1K1
2
FC
LOW SPEED
FAN RELAY
2K1
GL
2K2
GH
HIGH SPEED
FAN RELAY
RM
3K1
BM
X
A1
5K1
A2
P1
3K2
P2
CA1
CA1
CA2
CA2
3
CA3
CA3
T7147A
REMOTE
CA4
CA4
SENSOR
AND
OVERRIDE
CA5
CA5
MODULE
T
T
T
T
44
L1
L2
(HOT)
1
COOLING
RELAY
DAMPER
CONTROL RELAY
HEAT RELAY
M4378
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