Honeywell JADE W7220 Installation Instructions And Operators Manual page 13

EXH1 and EXH2 wiring:
Relay Digital Output Rating at 30 Vac (maximum powerfrom Class 2 input only): 1.5A run;
3.5A inrush @ 0.45PF (200,000 cycles) or
7.5A inrush @ 0.45PF (100,000 cycles)
If the inrush or FLA amps is above listed limits OR if the fan is a line voltage fan, an external relay will be required.
If no relay is required, the EXH1 or AUX1 out is wired to one side of the fan and the other side is wired to system common
"C" on the W7220 or equipment terminal board. (W7220 powered off the system transformer).
If a relay is required, the coil of the relay would be wired between the EXH1 or AUX1 and the C terminal of the W7220.
MA TEMP
SENSOR
20K NTC
MAT
MAT
OAT
OAT TEMP
1
OAT
SENSOR
20K NTC
CO2 IAQ (2-10V)
SENSOR IAQ COM
2-10 VDC IAQ 24V
(OPTIONAL)
ACT (2-10V)
ACT COM
ACT 24V
MS7503 OR MS7505
3
1 NOTE THAT THE 20K NTC SENSOR CAN BE MOUNTED IN THE OAT TERMINALS ONLY IN THIS
2 WHEN USING A HEAT PUMP THERMOSTAT, THERMOSTAT TERMINALS MAY DIFFER: W1 MAY BE LABELED O
OR B AND W2 MAY BE LABELED W.
3
WHEN USING A HEAT PUMP WITH DEFROST FEEDBACK, ADD AN ISOLATION RELAY BETWEEN O AND C.
Fig. 15. Stand-alone dry-bulb Economizer configuration with Honeywell MS7503 or MS7505 Direct Coupled
W7220 ECONOMIZER CONTROLLER MODULE
Actuator.
13
JADE™ ECONOMIZER MODULE
ROOF TOP UNIT
Y1
O/B
OCC Y2
3
1K1
AUX2-I
OCC
E-GND
AUX1-0
Y2I
Y2O
Y1I
Y1O
C R
1K1
R(+)
24 VAC
C(-)
2
CONFIGURATION.
THERMOSTAT
W1 G
W2
M32564D
63-2700—11