Honeywell C7400 Manual page 30

Solid state economizer system
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SOLID STATE ECONOMIZER SYSTEM
MS7XXX
HONEYWELL
ACTUATOR
63-2484—03
~
1
2
+
3
4
F
5
C7150B
DISCHARGE
AIR SENSOR
0/2-10 VDC
INDOOR AIR
+
SENSOR
C7400
+
OUTDOOR
AIR
ENTHALPY
S
SENSOR
A3
4
A2
Y1
Y2
W2
W1
G
RH
RC
X
5
O
T7300
THERMOSTAT
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE.
3
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY WHEN A
C7400 ENTHALPY SENSOR IS ADDED TO SR AND SR+ FOR DIFFERENTIAL ENTHALPY.
4
T7300 TERMINALS A2 AND A3 ARE CONNECTED WHEN THERMOSTAT IS IN THE UNOCCUPIED MODE.
SEE WIRING DIAGRAMS FOR T7350 AND TB7220/TB8220.
5
W7213: B TERMINAL
W7214: O TERMINAL
Fig. 37. W7213, W7214 controlling heat pump system.
5
O
N
MINIMUM POSITION
P1
ADJUSTMENT
P
T1
T
AQ1
AQ
SO+
SO
SR+
SR
W7214
3
620 OHM
RESISTOR
C
COOL 1
Y1
Y2
COOL 2
HEAT 2
W2
HEAT 1
W1
G
FAN
R
O
HVAC EQUIPMENT
TERMINAL STRIP
30
TR
TR1
24
24 Vac
Vac
COM
HOT
+
1
2
4
3
5
EF
EF1
2
L1
(HOT)
L2
EXHAUST
FAN
L2
1
L1
(HOT)
M24222

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