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!
EXPLOSION HAZARD
Failure to follow this warning could
result in death serious personal
injury, and/or property damage.
Never use air or gases containing
oxygen
operating refrigerant compressors.
Pressurized mixtures of air or
gases containing oxygen can lead
to an explosion.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing or servicing system, always turn off
main power to system and install lockout tag. There
may be more than one disconnect switch. Turn off
accessory heater power switch if applicable.
WARNING
!
PERSONAL
INJURY
HAZARD
Failure to relieve system pressure could result in
personal injury and/or death.
1. Relieve pressure and recover all refrigerant before
servicing existing equipment, and before final unit
disposal. Use all service ports and open all
flow--control devices, including solenoid valves.
2. Federal regulations require that you do not vent
refrigerant into the atmosphere. Recover during
system repair or final unit disposal.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal
injury.
When removing access panels (see Figure 16) or
performing maintenance functions inside your unit, be
aware of sharp sheet metal parts and screws.
Although special care is taken to reduce sharp edges
to a minimum, be extremely careful and wear
appropriate protective clothing, safety glasses and
gloves when handling parts or reaching into the unit.
INTRODUCTION
The PAR5 packaged air conditioner is fully self--contained and
designed for outdoor installation (See Figure 1 ). See Figure 2
and Figure 3 for unit dimensions. All unit sizes have discharge
openings for both horizontal and downflow configurations, and
are factory shipped with all downflow duct openings covered.
The unit may be installed either on a rooftop or on a
ground--level cement slab. (See Figure 4 for roof curb
dimensions.)
RECEIVING AND INSTALLATION
Step 1 — Check Equipment
IDENTIFY UNIT
The unit model number and serial number are printed on the
unit informative plate. Check this information against shipping
papers.
2
WARNING
for
leak
testing
AND
ENVIRONMENTAL
INSPECT SHIPMENT
Inspect for shipping damage before removing packaging
materials. If unit appears to be damaged or is torn loose from
its anchorage, have it examined by transportation inspectors
before removal. Forward claim papers directly to transportation
company. Manufacturer is not responsible for any damage
incurred in transit. Check all items against shipping list.
Immediately notify the nearest equipment distribution office if
any item is missing. To prevent loss or damage, leave all parts
in original packages until installation.
or
If the unit is to be mounted on a curb in a downflow application,
review Step 7 to determine which method is to be used to
remove the downflow panels before rigging and lifting into
place. The panel removal process may require the unit to be on
the ground.
Step 2 — Provide Unit Support
IMPORTANT:
installing screws through the bottom of the curb flange and into
the unit base rails. When installing large base units onto the
common curb, the screws must be installed before allowing the
full weight of the unit to rest on the curb. A minimum of six
screws are required for large base units. Failure to secure unit
properly could result in an unstable unit. See Warning near
Rigging/Lifting information and accessory curb instructions for
more details.
For hurricane tie downs, contact distributor for details and PE
(Professional Engineering) Certificate if required.
ROOF CURB
Install accessory roof curb in accordance with instructions
shipped with curb (See Figure 4). Install insulation, cant strips,
roofing, and flashing. Ductwork must be attached to curb.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for a water tight seal. Install gasketing material
supplied with the roof curb. Improperly applied gasketing
also can result in air leaks and poor unit performance.
Curb should be level to within 1/4 in. (6.35 mm) (See Figure 6).
This is necessary for unit drain to function properly. Refer to
accessory roof curb installation instructions for additional
information as required.
Installation on older "G" series roof curbs.
Two accessory kits are available to aid in installing a new "G"
series unit on an old "G" roof curb.
1. Accessory
chassis) and accessory kit number CPADCURB002A00,
(large chassis) includes roof curb adapter and gaskets
for the perimeter seal and duct openings. No additional
modifications to the curb are required when using this kit.
2. An alternative to the adapter curb is to modify the
existing curb by removing the outer horizontal flange and
use accessory kit number CPGSKTKIT001A00 which
includes spacer blocks (for easy alignment to existing
curb) and gaskets for the perimeter seal and duct
openings. This kit is used when existing curb is modified
by removing outer horizontal flange.
!
UNIT/STRUCTURAL DAMAGE HAZARD
Failure to follow this caution may result in property
damage.
Ensure there is sufficient clearance for saw blade
when cutting the outer horizontal flange of the roof
curb so there is no damage to the roof or flashing.
SLAB MOUNT
Place the unit on a solid, level pad that is at least 2 in. (51 mm)
above grade. The pad should extend approximately 2 in. (51
mm) beyond the casing on all 4 sides of the unit (See
Figure 7). Do not secure the unit to the pad except when
required by local codes.
The unit must be secured to the curb by
kit
number
CPADCURB001A00,
CAUTION
(small
51901190402
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