Pre-Start Checks - Addison RC/FC Series Installation Operation & Maintenance

RC/FC Series Installation, Operation, and Maintenance Manual

13.2 Pre-Start Checks

13.2.1 Ductwork and Electrical Connections
Ensure that the following ductwork and electrical
connections have been made:
• Ductwork: Supply and return air connections.
• Electrical: Line voltage power, control voltage power
and remote sensor connections.
13.2.2 Condensate Drain
Units are provided with condensate drain connection(s).
Do not operate unit unless a P-Trap is constructed and
attached to drain connection. See Figure 15. Unit must
be level or slightly inclined towards drain. Drain should
pitch down and away from the unit. P-Trap pipe diameter
should be the same as the drain connection diameter.
Units with high internal and external static pressure drops
will require a deeper trap. Prime the trap before operating
the unit.
13.2.3 Supply Fans
1. Make sure electrical power is isolated.
2. Check power settings for voltage and verify that they
correspond with the data on the motor plate.
3. Check that the motor is grounded (earthed).
4. Check that all electrical leads are sufficiently insulated.
5. Check that all electrical and system connections are
properly made and tightened.
6. Check that all nuts, bolts and setscrews are tightened.
7. Check that the blower wheel and drive assembly
turns freely without rubbing.
8. Check that belt drives are tightened, properly aligned
and tensioned.
9. Bump the motor.
10. Check rotation.
13.2.4 Compressors
With the supply fan operational, prepare for
compressor operation.
1. Verify that the crankcase heaters are operating. These
should operate for at least 24 hours before starting the
compressors. Crankcase heaters must be operating
during off cycles to prevent liquid refrigerant from
migrating to the compressor crankcase.
13.2.5 Hot Water Heating Coils (Optional)
1. Check all plumbing to the hot water heating coil is
complete and free of leaks.
2. Check that all air has been eliminated from the water
loop and coil.
3. Check that flow rates match the nominal GPM listed in
the table below.
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