Step 4 Mount The Unit - Bosch LV009 Installation And Maintenance Manual

LV Heat Pump Series
Step-4 Mount The Unit
Duct Flanges
The Unit heat pump feature foldout return and supply air
duct flanges. These fold-out flanges allow the heat
pumps to more easily fit through doorways and other
tight spaces, and also prevent damage in shipping and
handling.
It is recommended that all fold-out flanges be folded out
once the heat pump is installed to ensure that return and
supply airflow is not obstructed. These Flanges can be
easily folded using standard or duckbill pliers.Once
folded out these flanges can be used to support light
duct work loads.
Mounting Vertical Units
LV Series vertical and counter flow 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 #2 It is generally not necessary to anchor the unit
unless required by local code.
All major service access for the LV Series vertical and
counter flow models is from the front side of the unit.
When installing the unit in a confined space such as a
closet, ensure that the service panel screws are
accessible, that the filter can be replaced without
damage and that water and electrical connections are
accessible. 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 ensure 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.
Figure # 2 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 included with the unit.
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 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
eaves at a location that will be noticeable.
Vibration
Mounting
Pad
NOTICE: Horizontal (HZ) units must be
installed pitched toward the condensate
drain connection 1/8" per foot.
NOTICE: 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.
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