Honeywell Design and Application - Page 116

Section 11 - W7220 JADE™ Economizer Module
63-8594-02 Honeywell Economizers 110
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)
MA
MA
OA
OA
C R
M32564C
IAQ (2-10V)
IAQ COM
IAQ 24V
ACT (2-10V)
ACT COM
ACT 24V
3
OA TEMP
SENSOR
20K NTC
MS7503 OR MS7505
NOTE THAT THE 20K NTC SENSOR CAN BE MOUNTED IN THE OA 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
Fig. 5. 2-position actuator.
Fig. 6. Stand-alone dry-bulb Economizer configuration with Honeywell
MS7503 or MS7505 Direct Coupled Actuator.
1
2
ACTUATOR
EXH1 OR AUX1 O
NOTE: ON/OFF ACTUATORS CAN BE USED ON THE EXH1 OR AUX1
O TERMINAL WITH GROUND TO THE C TERMINAL. WHEN
PROGRAMMING THE EXH1 OR AUX1 O, THE % IS THE PERCENT
OPEN POSITION OF THE OUTDOOR AIR DAMPER WHEN THE
EXH1 OR AUX1 O TERMINAL IS ENERGIZED AND THE 2-POS
DAMPER GOES OPEN. IF USING THE AUX1 O TERMINAL
PROGRAM AUX1 O FOR EXH2.
C
M33409
V