Page 13 ZC-KI6_VSS1709
INSTALLATION
The installer must adhere strictly to all
local and national code requirements
pertaining to the installation of this
equipment. Detailed instructions are
shipped with all accessory items and
should be followed closely.
Air Handler Mounting
The Zone Control air handler can be
installed in any direction. Some
precautions must be observed for some
of the possible mounting positions. For
installations where the access door faces
up or down, select an air handler with an
external pump to avoid the pump being
mounted with its shaft vertical. The pump
shaft must be mounted horizontally to
avoid premature failure.
The air handler can be hung by securing
straps through any of the existing screw
holes in the cabinet. When the existing
screw is too short for securing a
mounting strap, a longer screw can be
used provided care is taken not to
damage any internal components. When
fastening straps using screws other than
those supplied with the cabinet, special
care should be taken in the vicinity of the
coil to avoid tube puncture.
The cabinet is designed so that the
return air can be located on either side of
the cabinet, through the bottom of the
cabinet, or from the back. Position the
filter rack so that the filter is readily
accessible.
Install the air handler with the door firmly
screwed in place to make sure the
cabinet remains square.
Provide at least 2 feet (0.75 metres) of
service clearance in front of the access
panel of the air handler. Zero clearance
is acceptable on all other faces.
Ductwork
Zone Comfort air handlers are suitable
for conventional ductwork or small D™
systems.
Duct selection for each zone should be
based upon ease of installing ductwork.
Final assignment of zones can be done
by changing zone damper wires on the
terminal strip in the top section of the air
handler. Duct connections at the air
handler should be labeled for future
reference (eg. bsmt, main, upstairs).
Supply trunks may be square or round.
SEAL all joints and seams with metal
tape or sealing compound. Locate outlets
at least 6 inches from outside walls or
window coverings.
For small D™, one 25 ft length of flex
duct will provide two 12.5ft branches.
Use only Class 1 flex duct or duct
connector. All vertical portions of branch
connections (such as to high wall grilles)
must be rigid duct. Flexible duct may only
be used in horizontal portions of the
branch.
Return air plenum should be the same
cross sectional area as the air handler
return air opening. In vertical
installations, a conventional return air
drop and elbow is acceptable.
Ductwork installed in unheated spaces
such as attics must be installed between
the insulation and the heated space.
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