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SM Series Heat Pump
MOUNTING VERTICAL UNITS
Vertical units should be mounted level on a vibration
absorbing pad slightly larger than the base to minimize
vibration transmission to the building structure. It is not
necessary to anchor the unit to the floor. (Figure #39).
Vibration absorbing pad not supplied with the unit.
On VT and CF units, the condensate drain pan is
internally sloped. There is no internal P-Trap.
Figure # 39
NOTICE: Vertical Units should be mounted
on a vibration absorbing pad. The unit must
be supported along the entirety of its base.
Revised 07-17
MOUNTING HORIZONTAL UNITS
While horizontal units may be installed on any level
surface strong enough to hold their weight, they are
typically suspended above a ceiling by threaded rods.
The manufacturer recommends these be attached to the
unit corners by hanging bracket kits (supplied with
horizontal units). The rods must be securely anchored to
the ceiling. Refer to the hanging bracket assembly and
installation instructions for details.
Plumbing connected to the heat pump must not come in
direct contact with joists, trusses, walls, etc. Some
applications require an attic floor installation of the
horizontal unit. In this case the unit should be set in a full
size secondary drain pan on top of a vibration absorbing
mesh.
The secondary drain pan prevents possible condensate
overflow or water leakage damage to the ceiling.
The secondary drain pan is usually placed on a plywood
base isolated from the ceiling joists by additional layers
of vibration absorbing mesh. In both cases, a 3/4"drain
connected to this secondary pan should be run to an
eave at a location that will be noticeable.
If the unit is located in a crawl space, the bottom of the
unit must be at least 4" above grade to prevent flooding
of the electrical parts due to heavy rains.
VIBRATION
PAD FULL SIZE
Mounting Vertical Units | 13
WARNING: Horizontal units installed above
the ceiling must conform to all local codes.
An auxiliary drain pan if required by code,
should be at least four inches larger than
the bottom of the heat pump.
HZ units condensate drain pan is NOT internally
sloped.
NOTICE: Horizontal (HZ) units must be
installed pitched approximately 1/4"
towards the condensate drain connection in
both directions to facilitate condensate
removal. See Figure # 40
Figure # 40
8733942411 (2017/06)
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