Daikin DP5HH2441 Series Installation Instructions Manual page 4

INSTALLATION
Pre-Installation Checkpoints
Before attempting any installation, the following points
should be considered:
• Structural strength of supporting members
• Clearances and provision for servicing
• Power supply and wiring
• Air duct connections
• Drain facilities and connections
• Location may be on any four sides of a home,
manufactured or modular, to minimize noise
Clearance
The unit is designed to be located outside the building
with unobstructed condenser air inlet and discharge.
Additionally, the unit must be situated to permit access
for service and installation. Condenser air enters from
three sides. Air discharges upward from the top of the
unit. Refrigerant gauge connections are made on the right
side of the unit as you face the compressor compartment.
Electrical connections can be made either on the right
or left sides of the unit. The best and most common
application is for the unit to be located 10" from wall (4"
minimum) with the connection side facing the wall. This
"close to the wall" application minimizes exposed wiring.
Close to the wall application assures free, unobstructed
air to the other two sides. In more confined application
spaces, such as corners provide a minimum 10" clearance
on all air inlet sides. Allow 18" minimum for service access
to the compressor compartment and controls. The top of
the unit should be completely unobstructed. If units are to
be located under an overhang, there should be a minimum
of 36" clearance and provisions made to deflect the warm
discharge air out from the overhang.
Location
Consider the effect of outdoor fan noise on conditioned
space and any adjacent occupied space. It is
recommended that the unit be placed so that condenser air
discharge does not blow toward windows less than 25 feet
away.
The unit should be set on a solid, level foundation -
preferably a concrete slab at least 4 inches thick. The
slab should be above ground level and surrounded by
a graveled area for good drainage. Any slab used as a
unit's foundation should not adjoin the building as it is
possible that sound and vibration may be transmitted to
the structure. For rooftop installation, steel or treated wood
beams should be used as unit support for load distribution.
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.
Outside Slab Installation (Figure 1)
1. The unit must be mounted on a solid, level
foundation.
2. Select a location that will minimize the length of the
supply and return ducts.
3. Select a location where external water drainage
cannot collect around the unit.
4. Consideration should also be given to shade,
appearance and noise.
36"
36"
Rooftop 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 proper consideration for the 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.
4
10"
WALL
UNIT
36"
Figure 1