Page 3
Setting the Unit
Heat pump units operate under a wide range of weather
conditions; therefore, several factors must be consid-
ered when positioning the outdoor unit. The unit must be
positioned to give adequate clearances for sufficient air-
flow and servicing. Maintain a minimum clearance of 610
mm between multiple units. Refer to figure 1 for installa-
tion clearances.
36
(914 mm)
Installation Clearances
36*
(914 mm)
*NOTE − A service clearance of 30" (762 mm) must be main-
tained on one of the sides adjacent to the control box. Clear-
ance to one of the other three sides must be 36" (914 mm).
Clearance to one of the remaining two sides may be 12" (304
mm) and the final side may be 6" (152 mm).
36*
(914 mm)
NOTE − A clearance of 24" (610 mm) must be maintained
between two units.
NOTE − 48" (1219 mm) clearance required on top
of unit. Maximum soffit overhang is 36" (914 mm).
36
(914 mm)
FIGURE 1
1 − Place a sound-absorbing material, such as Isomode,
under the unit if it will be installed in a location or posi-
tion that will transmit sound or vibration to the living
area or adjacent buildings.
2 − Install the unit high enough above the ground or roof
to allow adequate drainage of defrost water and pre-
vent ice buildup.
3 − In areas that receive heavy snow, do not locate the
unit where drifting will occur. Ensure that the unit base
is elevated above the depth of average snows.
NOTE − Elevate the unit by constructing a frame using
suitable materials. If a support frame is constructed, it
must not block drain holes in the base of the unit.
4 − When you install the unit in areas where low ambient
temperatures exist, locate the unit so winter prevail-
ing winds do not blow directly into outdoor coil.
5 − Locate unit away from overhanging roof lines which
would allow water or ice to drop on, or in front of, coil
or into unit.
Slab Mounting (See figure 2)
When the unit is installed at grade level, the top of the slab
should be high enough above the grade so that water
from higher ground will not collect around unit. Slab
should have a slope tolerance away from the building of 2
degrees or 51 mm per 1.5 m. This will prevent ice from
building up under the unit during a defrost cycle. Refer to
roof mounting section for barrier construction if unit must
face prevailing winter winds.
SLAB MOUNTING AT GROUND LEVEL
DISCHARGE AIR
MOUNTING SLAB MUST SLOPE
AWAY FROM BUILDING.
GROUND LEVEL
STRUCTURE
FIGURE 2
Roof Mounting (See figure 3)
If you are unable to mount the unit coil away from prevail-
ing winter winds, construct a wind barrier. Size the barrier
at least the same height and width as the outdoor unit.
Mount the barrier 610 mm from the sides of the unit in the
direction of prevailing winds.
Install the unit at a minimum of 152 mm above the roof
surface to keep ice from building up around the unit. Lo-
cate the unit above a load bearing wall or area of the roof
that can adequately support the unit. Consult local codes
for rooftop applications.
WIND BARRIER
INLET AIR
INLET AIR
INLET AIR
INLET AIR
PREVAILING WINTER WINDS
ROOFTOP APPLICATION
WIND BARRIER CONSTRUCTION
FIGURE 3
Содержание HP40
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