Roof Top Installation Details; Roof Curb Installations; Rigging Details - Daikin GPHM5 SEER2 M Series Installation Instructions Manual

Heat pumps require special location consideration in areas
of heavy snow accumulation and/or areas with prolonged
continuous subfreezing temperatures. Heat pump unit
bases have holes under the outdoor coil to permit drainage
of defrost water accumulation. The unit must be situated
to permit free unobstructed drainage of the defrost water
and ice. A minimum 2" clearance under the outdoor coil is
required in the milder climates.
Heat Pump Elevation Chart
Design Temperature
+15° and above
-5° to +14°
Below -5°
Roof Top Installation (Figure 2)
1. Before locating the unit on the roof, make sure that
the strength of the roof and beams is adequate to
support the weight involved. (See specification sheet
for weight of units). This is very important and the
installer's responsibility.
2. Make a proper consideration for weather-tight integrity
of the roof and proper drainage of condensate.
3. To ensure proper condensate drainage, unit must be
installed in a level position.
4. Consideration should also be given to shade,
appearance, and noise.
Rooftop Installation

Roof Curb Installations

NOTE: Sufficient structural support must be
determined prior to locating and mounting the
curb and package unit.
Curb insulation, cant strips, flashing and general roofing
material are furnished by the contractor.
Suggested Minimum Elevation
2 1/2"
8"
12"
Figure 2
Curbing must be installed in compliance with the National
Roofing Contractors Association Manual. Construct duct
work using current industry guidelines. The duct work must
be placed into the roof curb before mounting the package
unit. See Figure 3 - Roof Curb Installation.
Roof Curb Installation

Rigging Details

To prevent property damage, the unit should remain in an
upright position during all rigging and moving operations.
To facilitate lifting and moving when crane is used, place the
unit in an adequate cable sling.
To avoid possible property damage, personal injury or
death, ensure the roof has sufficient structural strength
to carry the weight of the unit(s), roof curb, snow loads,
and water load as required by local codes. Consult a
structural engineer to determine the wight capabilities of
the roof.
If units are lifted two at a time, the fork holes on the
condenser end of the unit must not be used. Minimum fork
length is 42" to prevent damage to the unit. However, 48" is
recommended.
NOTE: Provisions for forks have been included in
the unit base frame. No other fork locations are
approved.
5
Figure 3
WARNING
WARNING
WARNING