Jade Range W7220 Manuale Utente
JADE™ ECONOMIZER MODULE
62-0331—07
10
COMMON INSTALLATION ISSUES AND CONCERNS
Table 3. Installation Issues and Concerns.
Area
Issue or Concern
Possible Cause and Remedy
Configuration
Are the old sensors in the unit
(C7400A, C7150 or C7232)
compatible with the economizer
controller?
No, the C7400A and C7150 sensors are not compatible with the W7220. The enthalpy sensor
for the W7220 is the C7400S. The Mixed Air or Outdoor air dry bulb sensors are the C7250A.
The C7232 CO
2
sensor is compatible with the W7220.
The unit has a W7459
economizer and black motor.
Do I need to change the motor?
If you have a W7459 economizer with a M7415 motor you will need to change to a M7215
motor. The W7220 has a 2 to 10 Vdc out to the motor, so you will need a M7215 motor. The
M7215 motors are used with the W7212 economizers. So if you have one of these units, you
will not have to change the motor.
Wiring
I have 4 terminals on my
actuator and the wiring only
shows 3 wires.
The economizer 24 Vac COM can be wired to the Honeywell actuator common (
or
TR1). The actuators have internal ground circuits.
There is an Earth Ground
terminal. Do I need to wire to
earth ground?
Yes, the economizer must be wired to earth ground.
What are the part numbers of
the 2 and 6 pin side
connectors?
The 2-pin connectors are Honeywell part number 50048926-001 and the 6-pin connectors
are Honeywell part number 50048926-002. Both are available in accessory bags of 20 each.