Airmark GFS Series Installation manual - page 3
IO-123163 Effective 01-14-2016
3
5. Installation
Ensure that the unit is adequately sized.
The tonnage of the outdoor unit should
never exceed the tonnage of this unit.
CAUTION
!
The coil was manufactured with a dry
nitrogen pre-charge. Release the pressure
through the Schrader valve test port prior
to installation. If holding pressure is not present, return coil
to distributor for exchange.
!
WARNING
Some Aspen coils may include a Schrader
valve on the suction manifold. Ensure
that the Schrader valve and valve core
(where present) are protected from heat during brazing and
installation to prevent leakage. Use a core removal tool to
temporarily remove the core when brazing. Replace the core
once brazing is completed.
CAUTION
!
6. Air Handler Orientation
ü
Clean coil fins with degreasing agent or mild detergent and rinse
fins clean prior to installation.
ü
The refrigerant line sizes should be selected according to the
recommendations of the outdoor unit manufacturer.
ü
Care must be taken to ensure all connection joints are burr-free
and clean. Failure to do so may increase chances of a leak. It is
recommended to use a pipe cutter to remove the spun closed end of
the suction line.
ü
To reduce air leakage, rubber grommets may be present where
the lines pass through the coil case. To avoid damage, remove
grommets prior to brazing by sliding over the lines. Use a quenching
cloth or allow the lines to cool before reinstalling the grommets.
ü
Use of wet rags/quenching cloth is highly recommended to prevent
weld-related damages to the casing and Schrader valve (if present).
1. Using a 5/16” nut driver, remove the hex screws holding the
control panel cover. Remove the control panel cover, disconnect the
fan motor wiring, and remove the blower assembly.
2. Using a 5/16" nut driver, remove the hex screws securing the
heater/AC coil assembly to the slide brackets. The slide brackets are
located on the left and right sides of the assembly.
3. Slide the heater/AC coil assembly out of the brackets and
remove.
4. Mount the enclosure to the ceiling joists through the four mounting
holes using four lag screws.
5. Ensure the unit is level to allow for proper condensate drainage.
6A. Mounting
The unit has pre-drilled holes for ceiling mounting.
To facilitate an easier installation, the blower/fan and heater/AC coil
assemblies are removed prior to mounting the enclosure.