•Install a single 5 inch trap in the condensate drain line as close to the coil as possible. Make sure that the top of the trap is below the bottom of the drain pan to prevent the condensate from overflowing the drain pan. NOTE: There must be only one trap in the drain line. Using more than one trap may prevent drainage.
•Prime the trap with water.Insulate the drain if it is located in an unconditioned space, and test the condensate line for leaks. Consult local codes for additional restrictions or precautions.
•During system checkout, inspect the drain line and connections to verify proper condensate drainage.
ELECTRICAL connections
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury or property damage.
Improper servicing could result in dangerous operation, serious injury, death or property damage.
•Before servicing,disconnect all electrical power to the air handler.
•When servicing controls, label all wires prior to disconnecting. Reconnect wires correctly.
•Verify proper operation after servicing.
•Electrical connections must be in compliance with all applicable local codes and ordinances, and with the current revision of the National Electric Code (ANSI/NFPA 70).
•For Canadian installations, the electrical connections and grounding shall comply with the current Canadian Electrical Code (CSA C22.1 and/or local codes).
Pre-Electrical Checklist:
√Verify the voltage, frequency, and phase of the supply source match the specifications on the unit rating plate.
√Verify that the service provided by the utility is sufficient to handle the additional load imposed by this equipment. See the unit wiring label or Tables 9 - 10 (pages 28 - 29) for proper high and low voltage wiring.
√Verify factory wiring is in accordance with the unit wiring diagram (Figures 18 - 20, pages 25 - 27). Make sure the connections didn’t loosen during shipping or installation.
Line Voltage
•An electrical disconnect must be located within sight of and readily accessible to the unit.This switch shall be capable of electrically
•It is recommended that the line voltage to the unit be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the unit.
•Overcurrent protection must be provided at the branch circuit distribution panel and sized as shown on the unit rating label and according to applicable local codes. See the unit rating plate and Tables 10 & 11 (pages 28 & 29) for maximum circuit ampacity and maximum overcurrent protection limits.
•The installer should become familiar with the wiring diagram/schematic before making any electrical connections to the unit. See the unit wiring label or Figures 18 - 20 (pages 25 - 27).
•Use only copper wire for the line voltage power supply to this unit. Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit. Aluminum supply wire may be used if a heater kit is installed.
•If replacing any of the original wires supplied with the unit, the replacement wire must be copper wire consisting of the same gauge and temperature rating.
•Provide power supply for the unit in accordance with the unit wiring diagram, and the unit rating plate. Use UL listed conduit and conduit connectors for connecting the supply wires to the unit and for proper grounding. Field supplied bushings for the power supply cables must be added to support and protect the power supply cables.
•All 208/230 Volt units are shipped from the factory wired for 240 volt operation. For 208V operation, remove the lead from the transformer terminal marked 240V and connect it to the terminal marked 208V.
Grounding
WARNING:
The unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur. Do not use gas piping as an electrical ground!
This unit must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code (ANSI/NFPA 70) or the CSA C22.1 Electrical Code. Use the grounding lug provided in the control box for grounding the unit.
Thermostat Connections
•Thermostat connections shall be in accordance with the instructions supplied with the thermostat. The thermostat used with this equipment must operate in conjunction with any installed accessories. Typical AC and air handler hookups are shown in Figure 10 (page 12).
•Where local codes require that the thermostat wiring must be routed through a conduit or raceway, splices can be made inside the unit; however, all wiring must be NEC Class 1 and separated from incoming power leads.
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