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Figure 31 - Dampers and Actuator
Note: If one damper bank is to be
independently controlled by two actuators,
the two gears that join the separate portions
will need to be cut so that they do not
engage each other.
Figure 32 - Independently Controlled
Dampers
Duct System
Remove duct shipping covers immediately
prior to duct connection. A 1 inch tall duct
flange is provided around each duct
opening.
Piping
CAUTION
All piping design and installation
should be performed by qualified
professionals. All applicable codes
and industry standards should be
adhered to.
CAUTION
PVC (Polyvinyl Chloride) and CPVC
(Chlorinated Polyvinyl Chloride) are
vulnerable
to
attack
chemicals. Polyolester (POE) oils
used
with
R-410A
refrigerants, even in trace amounts,
in a PVC or CPVC piping system will
result in stress cracking of the piping
and fittings and complete piping
system failure.
The coil connections are copper MPT. Use
dielectric unions as necessary to prevent
galvanic-corrosion.
Always use a backup pipe wrench to prevent
excess
stress
and
connections. The connecting piping should
never be supported by the coil, it should be
independently supported. Swing joints or
flexible fittings should be used to absorb
expansion
and
contraction
temperature changes.
An access cover is provided for the chilled
water, hot water, and steam coil vent and
by
certain
and
other
damage
to
coil
due
to
57
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