Bard GV27S1-A Installation Instructions Manual - page 11
Manual
2100-510E
Page
11 of 38
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AIR FILTERS
FILTER
This unit must not be operated without a filter. It comes
equipped with 2" disposable filters, which should be
checked often and replaced if dirty. Insufficient airflow
due to undersized duct systems or dirty filters can result in
nuisance tripping of the high or low pressure controls.
Refer to Table 2 for correct airflow and static pressure
requirements.
NOTE:
The filter rack is installed on the unit as shipped
for right-hand return. If you require left-hand return, you
will need to remove the filter access door and remove the
screws holding the filter rack to the unit (slide downward
from underneath unit top). Invert the filter rack 180° to
move filter access door to the other side of the unit, and
reverse the previous steps (see Figure 3).
NOTE:
You will need to bend the duct attachment flanges
up using duct bills or similar device, as the unit is shipped
with them collapsed.
CONDENSATE DRAIN
Drain lines must be installed according to local plumbing
codes. It is not recommended that any condensate drain
line be connected to a sewer main.
Determine where the drain line will run and then select one
of four (4) locations for the condensate to exit the unit
casing (see Figure 4). There are knockouts in the unit
casing that can be selected for the condensate exit. Internal
of the unit, there is a clear flexible hose with a termination
fitting installed. When installed properly, this hose will
create a trap internal of the unit and will remain serviceable
if the drain system requires cleaning or service. Supplied in
the parts bag of the unit is a 3/4" PVC male adaptor that
will secure the internal drain components to the sheet metal
casing at the location you selected.
NOTE:
This drain line will contain cold water and must be
insulated to avoid droplets of water from condensing on the
pipe and dripping on finished floors or the ceiling below
the unit.
PIPING ACCESS TO UNIT
Water piping to and from the unit enters the unit cabinet on
either side of the unit. The connection directly at the unit is
a special double o-ring fitting with a retainer nut that secures
it in place. (It is the same style fitting used for the flow
center connection on ground loop applications.) You may
come in and out either side of the unit in any combination as
the installation dictates. One side has both connections
closed off with a double o-ring plug seal with retaining caps.
One or both of these are transferred to opposite side -
depending upon installation requirements.
Note:
All double o-ring fittings require “hand tightening
only”. Do not use wrench or pliers as retainer nut can be
damaged with excessive force.
Various fittings are available so you may then connect to
the unit with various materials and methods. These
methods include 1" barbed fittings (straight and 90°), 1"
MPT (straight and 90°), and 1-1/4" hot fusion fitting
(straight only) (see Figures 3 & 4).