– When a cooling coil is supplied, all
refrigeration piping must be installed in accordance with all
state and local codes and standard industry practices.
There must be sufcient exibility in the piping so that any
vibration from the unit is not transmitted to the building
and so that the piping joints at the unit are not stressed.
All refrigeration lines must be secured to prevent wear or
vibration at all operating conditions.
– Evaporator coils are designed and
tested to a designated maximum allowable operating pressure
(PSIG). It is the contractor’s and/or customer’s responsibility
to provide controls and reliefs on the refrigeration system to
prevent internal pressures from becoming higher than the
tested operating pressure.
– It is essential that the piping for
the system be done so that all lines can be drained and there
are no traps or pockets on the system where water or glycol
can collect and freeze. All piping should be pitched away from
the unit coil. The piping should be installed in a manner which
will allow the coil to be lled with an antifreeze solution, if
necessary.
Make duct connections to the casing by screwing anged ducts
directly to the casing with self-tapping sheet metal screws.
Duct connections to collar-type openings can be made with
"S" cleats or overlapping joints.
Apply polyurethane caulking around the duct connection. It is
important to seal all duct connections to prevent air-leakage
and system performance problems.
It is recommended that all duct connections to the AcuAir unit
be insulated to minimize condensation.
CAULKING
SHEET METAL SCREW
DUCT
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