Fan Coils
UpflowInstallations
The unit is ready to install in the upflow position without modifica-
tions.
The unit MUST be supported on the bottom ONLY and set on a
supporting frame or shelf. Use screws through the bottom to an-
chor to supporting frame.
Figule 2 I
Airflow Positions
UPFLOW POSITION
HEAll_R
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RLTER 38-20-19
Non-DuctedReturn Air Closet Installation
The cabinet can be installed in a closet with a false bottom to form
a return air plenum, or mounted on an open platform inside the
closet. Platform should be high enough to provide a free (open)
area for adequate return airflow into the bottom of the cabinet.
The open area can be on the front side or a combination of front
and sides, providing there is clearance on the sides between cabi-
net and closet. Refer to ACCA Manual D for sizing and free
area recommendations.
NOTE: Local codes may limit application of systems without a
ducted return to single story dwellings.
Horizontal Leftand RightInstallations
Units that are shipped with the horizontal drain pan installed are
set up for horizontal left hand airflow. They must have the drain
pan repositioned for right hand airflow. All other units must have
the horizontal drain pan kit installed for either left or right hand ap-
plications. For installation of the drain pan, refer to the installation
instructions included with the horizontal drain pan kit, and the fo!-
lowing.
CAUTION
Afield-fabricated auxiliary drain pan, with a seperate drain is
REQUIRED for all installations over a finished living space or
in any area that may be damaged by overflow from the main
drain pan. In some localities, local codes require an auxiliary
drain pan for ANY horizontal installation.
Drain Pan Installation / Conversion for Right Hand Airflow
See Figure 4
1. Remove coil access panel and carefully pull Coil/Horizon-
tal Drain Pan Assembly out.
2. Separate horizontal drain pan from coil drain pan. The coil
drain pan fits snuggly inside the horizontal pan.
Installation Instructions ]
Figure 3
Airflow Positions
HORIZONTAL LEFT POSITION
,,=,
HORIZONTAL RIGHT POSITION
,,=,
m
38-20-19
3. Position side of coil drain pan into horizontal drain pan
trough on deep end of pan on right side of coil.
4 Remove coil drip flanges from A-coil and reinstall on right
side of coil (same side as horizontal drain pan).
5. Remove the coil support bracket from the left side of the
cabinet and reinstall bracket on the right side of the cabinet.
6. Install drain plugs as required in back side of horizontal
drain pan. Install plugs in A col! drain pan to prevent air
leaks.
7. Slide coil assembly into cabinet being careful not to tear in-
sulation.
NOTE: Be sure A coil pan fits into the support bracket on the back
side of the cabinet and that pan is under the flange of the bracket
on the right side. The brackets fit over the top edge of the A coil
drain pan to hold it when it's put into the horizontal position.
8. Refer to Restrictor Orifice Selection and change restrictor if
necessary, then install coil access panel.
Cabinet can now be placed on it's side for horizontal airflow.
SuspendedCabinetInstallation
1. The cabinet may be supported on a frame or shelf, or it may
be suspended.
2. Use metal strapping or threaded rod with angle iron sup-
ports under the auxiliary drain pan to suspend cabinet.
These supports MUST run parallel with the length of the
cabinet (Figure 5 ).
3. Ensure that there is adequate room to remove service and
access panels after installing supporting brackets.
4. Place Styrofoam blocks in auxiliary drain pan to support
cabinet.
DuctConnections
SupplyDuct
Supply duct must be attached to the outside of flange on outlet
end of unit. Flexible connectors may be used if desired. Maintain
clearances from supply duct to combustibles when heaters are
installed. See Figure 1 and unit rating plate.
ReturnDuct
Return duct should be attached to bottom of unit using sheet met-
al screws or other fasteners.
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