User Guide

ZONED COMFORT CONTROL SYSTEM
MODEL 6208, 6210, 6212, 6214, 6216, 6218 and 6220
MOTORIZED STATIC PRESSURE CONTROLLED BYPASS DAMPER
INSTALLATION INSTRUCTIONS
CAUTION: Sharp edges may cause serious injury from cuts.
Use care when cutting and handling ductwork.
PARTS PROVIDED:
 Motorized Static Pressure Controlled Bypass Damper
 Pressure Sensing Probe
 3’ Clear Tubing (1/4” I.D., 3/8” O.D.)
POWER REQUIREMENT:
 24 VAC Transformer, 3VA per bypass damper
1. IDENTIFY BYPASS DAMPER POSITION IN SYSTEM
Identify where the bypass damper is to be installed. The bypass damper must be located downstream
of any heating or cooling components and upstream of all zone dampers.
The bypass damper should be installed with the bypass air being discharged into the return air plenum
(up to 30% of total system airflow), above the ceiling if this area is used as a common return or into a
dump zone.
2. INSTALL THE DAMPER TO THE DUCTWORK
 Install the damper with crimped end downstream.
 The bypass damper must be installed such that the
diaphragm of the static pressure control is in the
vertical position.
 Secure the damper to the duct with ½” long, #8 or #10
sheet metal screws (not included).
 Insulate the damper only (not controls).
3. INSTALL THE STATIC PRESSURE PROBE
The probe should then be inserted into the main supply
plenum, downstream of the bypass damper and at least 2
to 3 feet from the air handling unit in a straight section of
the duct at the center line. Attach one end of the sensing
tube to the static pressure control and the other end to
the pressure sensing probe.
4. PROVIDE POWER TO BYPASS DAMPER
Supply 24VAC to the bypass damper (refer to Figure 1 for
details).
Figure1