9
2"
figure 6. ground level Installation
2”
figure 7. Roof Top Installation
WARNINg:
To avoid the risk of property damage
or personal injury; it is the rigger’s
responsibility to insure that whatever
means are used to hoist the unit are
safe and adequate.
CAUTION:
All panels must be securely in place
when rigging and hoisting.
The rigging must be located outside the unit’s
center of gravity. Refer to figure 3 for center of
gravity locations.
Rooftop — For rooftop installations use the
appropriate accessory roof curb and follow all
instructions included with it. Make sure the two
supports beneath the unit have been removed.
Locate the unit according to local building
codes and ordinances. The curb must be level
to insure proper condensate drainage. See
figure 7.
The roof must be capable of handling the
weight of the unit. See figure 3 for unit weights.
Reinforce the roof if required.
AIR DUCTS
This unit is designed only for use with a supply
and return duct. Air ducts should be installed in
accordance with the standards of the National
Fire Protection Association “Standard for
Installation of Air Conditioning Systems” (NFPA
90A), “Standard for Installation of Residence Type
Warm Air Heating and Air Conditioning Systems”
(NFPA 90B), and all applicable local codes.
Design the duct work according to methods
described by the Air Conditioning Contractors
of America (ACCA). The ducts must be properly
sized not to exceed .2” w.c. pressure drop at 400
scfm per nominal ton of cooling capacity.
Duct work should be attached directly to the unit
flanges for horizontal applications. On roof curb
installations the ducts must be attached to the
curb hangers, not the unit.
Unconditioned Spaces — All duct work passing
through unconditioned space must be properly
insulated to minimize duct losses and prevent
condensation. Use insulation with an outer vapor
barrier. Refer to local codes for insulation material
requirements.
Summary of Contents for Q4SE-X24/PPH1SE
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