INSTALLATION MANUAL FXMQ_PB/FBQ ECONOMIZER
4
3.
Shipping and Packing List
Economizer package contains:
1 ea.
–
Economizer Assembly
1 ea.
–
Install Instructions Including Wiring Diagram
3 ea.
–
Wire Ties
1 ea.
–
Honeywell JADE Operation Manual
4.
Installation
Before starting the installation work, carefully read the following safety precautions.
a)
Disconnect all power to the indoor unit
b)
Remove the factory duct flange from the return inlet of the indoor unit.
c)
Attach the economizer over the return opening with sheet metal screws.
d)
Remove the control access panel on the economizer and indoor unit.
e)
Route wires from the indoor unit control box to the terminal strip located in the economizer control panel. Route a
field-supplied 24VAC power supply to the economizer terminal strip and the KRP1C74. Refer to wiring diagram, Figure 3.
f)
Replace the control access panels on the economizer and indoor unit.
g)
Place the return air duct and fresh air duct over the economizer return and fresh air dampers.
Note
: Economizer section may be rotated 180° for bottom fresh air connection.
5.
Operation Mode
A.
Cooling Mode
1.
While in cooling thermo-on, with the ambient temperature and humidity above the enthalpy control set point, the
fresh air damper will open to the minimum vent position and the cooling demand is satisfied by the compressor.
The minimum vent position is site-configurable.
2.
While in cooling thermo-on, with the ambient temperature and humidity below the enthalpy control set point, the
fresh air damper will modulate to ensure the mixed air supplied to the indoor unit is no lower than the set point
temperature. This will reduce the mechanical cooling of the indoor unit and VRV System . The mixed air set point
should be configured in accordance with the operating conditions of the fan coil.
Figure 1. JADE Economizer Module
B.
Heating Mode
1.
While in heating thermo-on, the damper will open to the minimum position. The minimum position is
site-configurable.
