Mounting Vertical Units; Mounting Horizontal Units - Bosch LV Series Installation And Maintenance Manual

LV Heat Pump Series

Mounting Vertical Units

LV Series vertical and counterflow units should be
mounted level on a vibration absorbing pad slightly
larger than the unit base in order to minimize
vibration transmission from the unit to the building
structure. See Figure #1. It is generally not
necessary to anchor the unit unless required by
local code.
All major service access for the LV Series vertical
and counterflow models is from the front side of
the unit. When installing the unit in a confined
space such as a closet, insure that the service
panel screws are accesible, that the filter can be
replaced without damage and that water and
electrical connections are accesible. For models
with a unit mounted disconnect switch, make sure
the switch can be easily seen and operated.
To reduce sound transmission, units should be
installed using flexible electrical conduit and hose
kits. Care should be taken to insure that no part of
the unit cabinet is touching part of the building
structure. For ducted return applications, a
flexible duct connection should be used. Refer to
Figure's #11, #12 and #13.
Figure # 1 Mounting Vertical Units
LV Heat Pump Series

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 rods are usually attached to the
unit corners by hanger bracket kits (P/N 930-008).
(See Figure #2).
The rods must be securely anchored to the ceiling.
Refer to the hanging bracket assembly and
installation instructions (Included with the unit)
for details.
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.
Plumbing connected to the heat pump must not
Vibration
come in direct contact with joists, trusses, walls,
Mounting etc.. Some applications require an attic floor
installation of the horizontal unit. In this case the
Pad
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.
Figure # 2 Hanger Bracket
Units larger than six tons include an integral
angle iron frame with mounting holes present.
(See unit horizontal detail drawing).
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