Carrier 50TC Make Electrical Connections, Economizer Filter Installation, Electrical Shock Hazard

5.Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 14.

DIVIDER

OUTSIDE

AIR

HOOD

CLEANABLE

ALUMINUM FILTER FILTER

BAROMETRIC RELIEF

FILTER CLIP

C08634

Fig. 14 - Economizer Filter Installation

6.Caulk the ends of the joint between the unit top panel and the hood top.

7.Replace the filter access panel.

Step 9 — Install External Condensate Trap and Line

The unit has one 19 mm (3/4-in.) condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 15. Unit airflow configuration does not determine which drain connection to use. Either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, ensure the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain pan can be tightened with a 12.7 mm (1/2-in.) square socket drive extension.

To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a 12 mm [1/2-in.] square socket drive extension) and install it in the side drain connection.

CONDENSATE PAN (SIDE VIEW)		ALTERNATE
STANDARD	DRAIN PLUG
		BOTTOM DRAIN
SIDE DRAIN
	(FACTORY-INSTALLED)

C08021

Fig. 15 - Condensate Drain Pan (Side View)

The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 16.

MINIMUM PITCH
25 mm (1 in.) PER	BASE RAIL
3m (10 ft.) OF LINE
		51 mm
	OPEN	(2 in.)
		MIN
	VENT
TO ROOF		SEE NOTE
DRAIN
		ROOF
		CURB
	DRAIN PLUG

NOTE: Trap should be deep enough to offset maximum unit static
difference. A 102 mm (4 in.) trap is recommended.	50TC
C09387
Fig. 16 - Condensate Drain Piping Details

All units must have an external trap for condensate drainage. Install a trap at least 102 mm (4-in.) deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 25 mm in 3 m (1-in. per 10 ft) of run. Do not use a pipe size smaller than the unit connection of 19 mm (3/4-in.).

Step 10 — Make Electrical Connections

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Do not use gas piping as an electrical ground. 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 electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with local electrical codes or in absence of local codes, it is recommended that the U.S.A. standard ANSI/NFPA 70, National Electrical Code (NEC), be followed.

NOTE: Check all factory and field electrical connections for tightness. Field-supplied wiring shall conform with the limitations of 33_C (63_F) rise.

Field power wires are connected to the unit at line-side pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box component arrangement) or at factory-installed option non-fused disconnect switch. Use copper conductors only.

NOTE: Make field power connections directly to line connection pressure lugs only.

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