PKG-SVX14A-EN
23
Unit Startup Procedures
1. Check all electrical connections for
tightness.
2. Be sure all unit accessories are
properly set and installed.
3. Model SCWH: Verify condenser
water piping is properly connected,
supply, and return.
4. Model SCRH: Verify refrigerant
piping is properly connected, hot gas,
and liquid.
5. Inspect all ductwork and duct
connections.
6. Check for proper belt tension.
7. Check fan drive sheaves, pulleys, and
bearings.
Unit Startup Checklist
1. Turn the thermostat to the OFF
position.
2. Engage power supply by closing
power disconnect.
3. Switch thermostat to fan position and
adjust temperature setting below room
temperature. Evaporator fan should
start.
startup
Installation
4. Check evaporator section for proper
operation.
5. Switch thermostat to cool position and
adjust temperature setting to below
room temperature. The evaporator fan
and compressor(s) should start.
Note: These units are equipped with high
efficiency scroll compressors. Check for
proper scroll rotation prior to operating
unit.
6. Check the evaporator fan for proper
rotation. If fan rotation is incorrect,
switch thermostat to Off position and
disconnect power. Reverse two phase
leads at disconnect and return back to
Step 1 of startup.
7. Allow unit to run until all system
temperatures and pressures stabilize.
8. Check systems for proper operation
and performance. Observe unit in
operation and check for unusual noise,
vibration, belt, and fan clearances.
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.
WARNING
Rotating Components!
During installation, testing, servicing
and troubleshooting of this product it
may be necessary to measure the
speed of rotating components. Have a
qualified or licensed service individual
who has been properly trained in
handling exposed rotating
components, perform these tasks.
Failure to follow all safety precautions
when exposed to rotating
components could result in death or
serious injury.
The maintenance and trouble-
shooting procedures recom-
mended in this section of the
manual could result in exposure to
electrical, mechanical or other po-
tential safety hazards. Always refer
to the safety warnings provided
throughout this manual concerning
these procedures. When possible,
disconnect all electrical power in-
cluding remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power can not be inadvertently en-
ergized. When necessary to work
with live electrical components,
have a qualified licensed electri-
cian or other individual who has
been trained in handling live elec-
trical components perform these
tasks. Failure to follow all of the
recommended safety warnings
provided, could result in death or
serious injury.
WARNING
Hazardous Service Procedures
!