Carrier 50GX, 50GS CondensateTrap, MinimumAirflow for Safe Electric Heater, Operation Cfm

1” (25mm) MIN.

TRAP OUTLET

2” (50mm) MIN.

C99013

Fig. 7—Condensate Trap

Table 3—Minimum Airflow for Safe Electric Heater

Operation (Cfm)

SIZE

018	024	030	036	042	048	060
700	800	1000	1200	1400	1600	2000

5.It is recommended that the unit base insulation around the perimeter of the vertical return-air opening be secured to the unit base with aluminum tape. Applicable local codes may require aluminum tape to prevent exposed fiberglass.

6.Cover both horizontal duct openings with the duct covers from the accessory duct cover kit. Ensure opening is air-and watertight.

7.After completing unit conversion, perform all safety checks and power up unit.

NOTE: The design and installation of the duct system must be in accordance with the standards of the NFPA for installation of nonresidence-type air conditioning and ventilating systems, NFPA 90A or residence-type, NFPA 90B; and/or local codes and ordinances.

Adhere to the following criteria when selecting, sizing, and installing the duct system:

8.Units are shipped for side shot installation.

9.Select and size ductwork, supply-air registers, and return-air grilles according to American Society of Heating, Refrigera- tion and Air Conditioning Engineers (ASHRAE) recommen- dations.

10.Use flexible transition between rigid ductwork and unit to prevent transmission of vibration. The transition may be screwed or bolted to duct flanges. Use suitable gaskets to ensure weathertight and airtight seal.

11.All units must have field-supplied filters or accessory filter rack installed in the return-air side of the unit. Recommended sizes for filters are shown in Tables 1 and 2.

12.Size all ductwork for maximum required airflow (either heating or cooling) for unit being installed. Avoid abrupt duct size increases or decreases or performance may be affected.

13.Adequately insulate and weatherproof all ductwork located outdoors. Insulate ducts passing through unconditioned space, and use vapor barrier in accordance with latest issue of Sheet Metal and Air Conditioning Contractors National Association (SMACNA) and Air Conditioning Contractors of America (ACCA) minimum installation standards for heating and air conditioning systems. Secure all ducts to building structure.

14.Flash, weatherproof, and vibration-isolate all openings in building structure in accordance with local codes and good building practices.

SUPPLY	RETURN
DUCT	DUCT
OPENING	OPENING

C99011

Fig. 8—Supply and Return Duct Opening

Step 8—Install Electrical Connection

The unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of an electrical wire connected to the unit ground lug in the control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code) ANSI/NFPA (latest edition) and local elec- trical codes. In Canada, follow Canadian Electrical Code CSA (Canadian Standards Association) C22.1 and local electrical codes. Failure to adhere to this warning could result in personal injury or death.

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