Trane LPC, Инструкции по установке и эксплуатации

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LPC-SVX01C-EN 29
pre-installation
considerations
Installation
Fan Discharge Conversion
The LPC Vertical Unit can be ordered in
four discharge configurations:
Top/Front, Front/Top, Top/Back, and Back/
Top Figure I-PC-4. Discharge
Configurations. Field conversions from
one configuration to another can be
made for sizes 8 through 21 by modifying
certain parts of the cabinet and by
rotating the fan. Also, if changing from a
front or back discharge to a top discharge
configuration, a duct extension will need
to be added.
For sizes 3 and 6 a new fan assembly will
be needed.
There are some differences between
single-wall construction cabinets with
fiberglass insulation and
double-wall construction cabinets with
foam insulation that will drive some
minor differences in some of the steps
required for a field conversion.
But overall the basic steps are the same
for both.
1.
Disconnect power from the unit
2. Remove access doors.
3. Remove the screws inside the
cabinet along the top of the coil that
secure the coil to the cabinet roof
4a. If top discharge and no internal
isolation remove screws securing
duct that connects the fan to the roof
b. If top discharge with internal isolation,
duct is not mechanically secured to
the fan so roof & duct can be
removed as one piece.
c. Remove roof
5a. If horizontal (front or back) discharge
and no internal isolation, remove
screws securing fan housing to
cabinet
b. If horizontal (front or back) discharge
with internal isolation loosen and
remove j-bolt securing fan housing to
cabinet.
c. Remove front and back panel.
6.
Loosen nuts/bolts securing sliding
motor base in place and loosen nuts
on belt tensioning bolt.
7. Remove v-belt(s)
8. Detach fan from the base and rotate
to the desired discharge position.
Figure I-PC-4. Discharge Configurations
9. It may be necessary to remove and
reinstall the fan shaft on the opposite
side depending on the new discharge
position. Loosen set screws on the
fan bearings that hold the shaft in
place. Loosen set screw holding fan
in place. Remove shaft from the fan
and reinstall so that the driven end is
on the opposite side.
10. Reattach fan to the base
11. Reattach v-belt, tighten, and secure
sliding motor base in place. Because
the distance between the motor shaft
and the fan shaft may change, it may
be necessary to purchase a new v-
belt.
12. Cut a hole in the discharge panel for
the air discharge. For double wall
units cover the exposed foam
insulation at the inside edges of the
hole using the insulation cover
channels installed on the other
discharge panel.