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Ducted Installations
4100 and 6100 Series Zoneline
®
units may be used
in ducted installations.
With a ducted installation it is possible to condition the
air in two areas that have a common wall separating
them. A special adapter mounts on the wall case and a
transition piece directs the air from the unit into the adapter.
Instructions for mounting the adapter to the wall case are
included with the duct adapter. The adapter contains a
grille that allows air from the unit to be discharged into the
primary room and the adapter connects to a duct extension
that allows the air to flow to the adjoining room. Ducting
a unit may allow a single unit to be used rather than a
separate unit in each room, providing a means of reducing
initial equipment cost. The duct may extend a total of 15 feet
(with a field-fabricated insulated duct extension) in one
direction, either to the right or to the left of the unit. A baffle
in the adapter allows up to 50% of the discharge air to be
delivered to the secondary room.
The installation of the wall case and sub-base, if used, is the
same for units being ducted as for free-standing units. The
duct adapter support bracket overlaps the wall case by 1"
and the bracket and mounting screws add approximately
3/8" (3/16" on each side) to the width of the wall case. If
less than 1" of the wall case projects into the room it will
be necessary to allow for the additional width in the opening
for the wall case. The duct adapter mounting brackets should
be mounted prior to installing the case in the wall.
Refer to pages 38 and 39 for drawings of ducted installations.
Prior to the installation of the transition from the room
cabinet to the adapter, it will be necessary to remove the
discharge grille from the room cabinet. Instructions for this
modification are included with the duct adapter.
New Ducted Installations
Components
Duct Adapter RAK6052 — The duct adapter is secured
to each side of the wall case and requires the drilling of
mounting holes in the wall case during installation. A
template for the hole location is in the installation instructions.
By securing the duct adapter to the wall case, the chassis
retains the slide-out feature for servicing after the transition
piece is removed.
Duct Extension RAK601 — This kit contains a 44"-long
insulated duct, a register mounting collar, and an air supply
register. It can be secured to the duct adapter at either end
of the adapter. This duct may be cut at any dimension and
used in two applications providing the sum of the two duct
lengths necessary does not exceed the 44" length. Even in
single applications the mounting flange must be cut off
one end of the duct to accept the collar and supply register.
Mounting Collar and Supply Register RAK602 —These
components are included in the Duct Extension Kit RAK601.
They may be ordered separately for installations where two
duct extensions are made from one RAK601.
Ducted Application Considerations
When designing a ducted application, some application
considerations to be made include:
1. Do not exceed the 15-foot-length maximum for the
duct extension. Field-supplied duct extension must be
completely insulated with minimum of 1/2" insulation
2. The duct
must be a straight run. Turns or bends in the
duct extension create air pressure drops that the unit is
not designed to overcome.
3. Turn the “Duct Mode” on in the auxiliary control settings
(Mode 7). This increases the fan speed to ensure proper
circulation.
4. Minimum recommended clearance between the unit and
the adjacent wall is 2”.
5. Provisions for return air must be made to allow air
circulation from secondary room. Doors in both secondary
and primary rooms may be undercut or a return grille
may be installed through a common wall.
6. When calculating the heat gain/heat loss take both areas
into consideration.
Replacements of Existing Ducted Units
Since the design of the Zoneline chassis has changed over
the years to provide better performance and appearance,
some of the components used in ducted applications have
changed. Select the proper components from the information
below. The best procedure in determining the correct kit is to
measure duct extension cross section.
Flat-Top Discharge Units (Zoneline Units Built Prior
to 1988)
Existing Duct Extension Cross Section Measurements:
8-3/8" height x 6-1/2" width
Duct Adapter RAK7012 — This duct adapter will allow the
replacement of a new chassis (4100 or 6100 Series unit)
into an existing ducted application. This adapter will align
properly with the duct extension and will eliminate the need
to modify the wall opening. In order to minimize replacement
costs, some of the components of the old duct adapter must
be removed and used in the new installation. Consult the
Installation Instructions of the RAK7012 before removing and
discarding the old duct adapter. See additional notes page 56.
Slope-Front Discharge Units
(Models With AZC, AZR, AZW, or AZ21 or AZ31 Prefix)
Existing Duct Extension Cross Section Measurements:
7-3/32" height x 6-1/2" width
Duct Transition RAK7022 — This duct transition will allow the
replacement of a new slope-front discharge Zoneline chassis
(4100 or 6100 Series unit) into a previous-design slope-front
ducted installation. See additional notes page 56.
Duct Adapter RAK6052
RAK601 Duct
Extension,
Mounting Collar
and Register
Содержание 6100 Series
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