Honeywell Design and Application Technical Reference Manual page 96

Section 9 - W7212, W7213 and W7214 Economizer Modules
MS7XXX
HONEYWELL
ACTUATOR
63-8594-02 Honeywell Economizers
~
1
2
+
3
4
F
5
C7150B
DISCHARGE
AIR SENSOR
–
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 T7350 AND TB7220/TB8220 WIRING.
5 W7213: B TERMINAL
W7214: O TERMINAL
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
Y1 COOL 1
Y2
COOL 2
HEAT 2
W2
HEAT 1
W1
G FAN
R
O
HVAC EQUIPMENT
TERMINAL STRIP
90
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)
M19618E