(© Oct, 2007)
Compact CW Series Installation, Operation & Maintenance Manual
Air Technology Systems, Inc.
2-2
walls can be a polyethylene film. Concrete walls and
floors should be painted with a rubber or plastic based
paint. Doors and windows should be properly sealed
and a door sweep used to minimize leakage. Outside
or fresh air should be kept to a minimum (as it adds to
the cooling, heating, dehumidification and humidifying
loads), while still maintaining the requirement of the
Indoor Air Quality (IAQ) standard. Lack of attention to
these factors can cause erratic operation, unstable
room control and excessive maintenance costs.
2.3
Rigging
Compact CW systems are designed to be kept in the
vertical position. Move the unit with a suitable device
such as a forklift, roller bar, pallet jack or dollies. For
reference, a weight table is provided on the installation
drawing. Units are shipped on a skid to facilitate
moving prior to installation. Units should always be
stored indoors in a dry location prior to installation.
CAUTION
When moving the unit, it must be kept level and
in the vertical position to prevent damage.
2.4
Mounting/Placement
Compact CW systems that are not ducted are de-
signed to be located in the conditioned space. Ducted
units may be located inside or outside the conditioned
space, but are designed to supply air to only one
room. The
Compact CW systems are front accessible,
which allows the units to be placed in a corner or
between cabinetry. It is recommended that the unit is
positioned to obtain optimum air circulation.
NOTE
Placement of the floor or ceiling registers is im-
portant. If they are too close to the unit, the sup-
ply air will be re-circulated back to the unit be-
fore it has circulated throughout the space.
See Figures 5 and 6. The unit is designed to be
located directly on top of the floor (typically upflow) or
on a raised floor (typically downflow).
CAUTION
Ensure the mounting surface is capable of sup-
porting the weight of the equipment. Before mount-
ing the unit, refer to the weight table provided on
the installation drawing. On some raised floor in-
stallations, a floor stand is required, depending
on the load capacity of the existing raised floor.
SERVICE
SWITCH
HINGED
DOOR
OPTIONAL
FLOOR STAND
Figure 6- Typical Installation Downflow
Figure 5- Typical Installation Upflow
PLENUM BOX
ASSEMBLY
(OPTIONAL)
HINGED
DOOR
SERVICE
SWITCH
2.4.1
Precision A/C Unit
The
Compact CW system uses a frame and panel
construction for unit rigidity and full service accessibil-
ity without moving the unit. If a floor stand is used,
refer to the installation drawing provided and cut out
the raised floor to match the unit’s overall base
dimension. If a floor stand is not used, cut out the
