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INTEGRATED PRESSURE CONTROL
4.
Static Pressure Option:
The Integrated Pressure
Control Board can be field configured for specified
static pressure using a multi meter and the static
pressure – voltage chart.
(Exhibit A).
This chart
shows voltage (DC) to inches of W.C. (static
pressure) relationship. Use a multi meter set on
VDC and place the leads on the “C” terminal and
“TP1” (test point one) next to the potentiometer.
The Voltage reading translates to inches of W.C.
Note # 1:
To open all dampers, it may be necessary
to remove Y outputs to unit on the zone control board
and to make full cool calls on all thermostats. This will
modulate dampers fully open and lock out compressor.
BYPASS CHECKOUT FOR STATIC PRESSURE
CONTROLLER
1. Make cool call at the zone thermostat of the
smallest zone.
2. Verify all zone dampers are closed except for
calling zone.
3. Verify noise at zone registers is not excessive.
Adjust the Integrated Pressure Control LEFT to
lower noise (airflow) or RIGHT to increase airflow
until too noisy.
BYPASS DAMPER WIRING DIAGRAM
WITH INTEGRATED BYPASS CONTROL
RECTANGULAR HEAVY DUTY ZONE DAMPERS
(STCD W x H)
Zonex Systems rectangular heavy duty dampers are recommend-
ed for systems 7.5 tons or larger with a maximum differential static
pressure of 1.75”. These are power open, power close dampers
made of 20 gauge “snap-lock” steel frame with S and drive duct
connections. Allow a 16” gap in the duct for the damper. Formed
steel blade stops incorporate a gasket for quiet operation and
improved structural rigidity. Rectangular dampers under 10” in
height incorporate a single blade design. Dampers 10” or over use
opposed blade design. Power consumption is 2VA. The motors are
designed for continuous full stall operation. Special winding and
heavy duty gearing provide for long motor life.
