Addison RC/FC Series Installation Operation & Maintenance

Contents

Addison RC/FC Series Installation Operation & Maintenance Manual pdf 52 page image

Page 52 of 8013.2 Pre-Start Checks13.2.1 Ductwork and Electrical ConnectionsEnsure that the following ductwork and electricalconnections have been made:• Ductwork: Supply and return air connections.• Electrical: Line voltage power, control voltage powerand remote sensor connections.13.2.2 Condensate DrainUnits are provided with condensate drain connection(s).Do not operate unit unless a P-Trap is constructed andattached to drain connection. See Figure 15. Unit mustbe level or slightly inclined towards drain. Drain shouldpitch down and away from the unit. P-Trap pipe diametershould be the same as the drain connection diameter.Units with high internal and external static pressure dropswill require a deeper trap. Prime the trap before operatingthe unit.13.2.3 Supply Fans1. Make sure electrical power is isolated.2. Check power settings for voltage and verify that theycorrespond 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 areproperly made and tightened.6. Check that all nuts, bolts and setscrews are tightened.7. Check that the blower wheel and drive assemblyturns freely without rubbing.8. Check that belt drives are tightened, properly alignedand tensioned.9. Bump the motor.10. Check rotation.13.2.4 CompressorsWith the supply fan operational, prepare forcompressor operation.1. Verify that the crankcase heaters are operating. Theseshould operate for at least 24 hours before starting thecompressors. Crankcase heaters must be operatingduring off cycles to prevent liquid refrigerant frommigrating to the compressor crankcase.13.2.5 Hot Water Heating Coils (Optional)1. Check all plumbing to the hot water heating coil iscomplete and free of leaks.2. Check that all air has been eliminated from the waterloop and coil.3. Check that flow rates match the nominal GPM listed inthe table below.RC/FC Series Installation, Operation, and Maintenance Manual