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SXIH-SVX01B-EN 15
Installation
Installation
Procedure
Installation Checklist
The checklist listed below is a summary
of the steps required to successfully
install an integral air-cooled unit. This
checklist is intended to acquaint the
installing personnel with what is required
in the installation process. It does not
replace the detailed instructions detailed
in the applicable sections of this manual.
WARNING
Hazardous voltage!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power can not be inadvertently
energized. Failure to disconnect
power before servicing could result in
death or serious injury.
General Unit Requirements
Install and secure the ductwork to the
unit.
Check unit for shipping damage and
material shortage. Refer to the
Receiving Checklist.
FAN HOUSING IN VERTICAL
DISCHARGE POSITION
INSTALL SHEAVE ON
OPPOSITE END OF SHAFT
REWIRE MOTOR TO
REVERSE ROTATION
TURN FAN HOUSING END-FOR-END
FOR HORIZONTAL DISCHARGE
Figure I-IP-1. Converting fan to horizontal discharge
Electrical Requirements
Verify that the electrical power supply
characteristics comply with the unit
nameplate specifications.
Inspect all control components; tighten
any loose connections.
Connect properly sized and protected
power supply wiring to a field supplied/
installed disconnect and unit power
terminal block, or to the optional unit
mounted disconnect switch.
Properly ground the unit.
Field Installed Control Wiring (Optional)
Complete the field wiring connections.
Note: All field installed wiring must
comply with NEC and applicable local
codes.
Fan Discharge Conversion
Refer to Figure I-IP-1 and Table I-IP-1
while following the steps below to
convert the fan discharge from vertical to
horizontal.
1. Remove the front and top fan section
panels.
2. Loosen the fan motor to release belt
tension. Remove the fan belt. Do not
force the belt over sheaves.
3. Remove the bolts holding the fan scroll
to support channels. Lift fan out through
the front of the unit.
4. Move the fan sheave to the opposite
end of the fan shaft.
5. Turn the fan scroll end-for-end and bolt
it to the support channels with the
discharge towards the back. Mounting
holes are provided in the fan scroll.
6. Align the fan and motor sheaves. Install
the belt and adjust the belt tension.
Refer to TableI-IP-1 for the correct belt
size. The belt should depress about one
inch under light pressure when
properly adjusted.
7. Reverse direction of the motor rotation
by exchanging any two of the three
motor wire connections.
8. Exchange the front and top panel
locations.
Table I-IP-1. Belt sizes for fan discharge conversion
discharge
model horizontal vertical
SCIH050 A-34 A-42
SCIH075 A-34 A-42
SCIH100 B-35 B-42
SCIH150 B-30 B-38