Jade Range W7220 - Manual (Page 4)

JADE ™ ECONOMIZER MODULE
62-0331—11 4
Fig. 2. Stand-alone dry-bulb Economizer configuration with Honeywell MS7403 Direct Coupled Actuator.
ROOF TOP UNIT
Y1O
Y2O
Y1I
Y2I
OCC
24 VAC
E-GND
Y1 G
W2
W1
Y2
O/B
OCC
W7220 ECONOMIZER CONTROLLER MODULE
THERMOSTAT
CO2
SENSOR
2-10 VDC
(OPTIONAL)
MAT
MAT
OAT
OAT
C R
M32564D
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
3
OAT TEMP
SENSOR
20K NTC
MS7503 OR MS7505
NOTE THAT THE 20K NTC SENSOR CAN BE MOUNTED IN THE OAT TERMINALS ONLY IN THIS CONFIGURATION .
WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O
OR B AND W2 MAY BE LABELED W.
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION RELAY BETWEEN O AND C.
1
1
MA TEMP
SENSOR
20K NTC
R(+)
C(-)
AUX1-0
AUX2-I
2
3
2
3
1K1
1K1