Carrier 48/50HJ004-014 specifications Make Electrical Connections

	MAX WEIGHT			A		B			C
	lb	kg	in.	mm	in		mm	in.		mm
48HJ004 w/62AQ060	890	404	95.6	2428.20	57.38		1457.30	33.35		847
48HJ004 w/62AQ100	905	411	95.6	2428.20	57.38		1457.30	33.35		847
48HJ005 w/62AQ060	900	409	95.6	2428.20	57.38		1457.30	33.35		847
48HJ005 w/62AQ100	915	415	95.6	2428.20	57.38		1457.30	33.35		847
48HJ006 w/62AQ060	920	418	95.6	2428.20	57.38		1457.30	33.35		847
48HJ006 w/62AQ100	935	425	95.6	2428.20	57.38		1457.30	33.35		847
48HJ007 w/62AQ060	995	452	95.6	2428.20	57.38		1457.30	42.12		1070
48HJ007 w/62AQ100	1010	459	95.6	2428.20	57.38		1457.30	42.12		1070
50HJ004 w/62AQ060	795	361	95.6	2428.20	57.38		1457.30	33.35		847
50HJ004 w/62AQ100	810	368	95.6	2428.20	57.38		1457.30	33.35		847
50HJ005 w/62AQ060	805	365	95.6	2428.20	57.38		1457.30	33.35		847
50HJ005 w/62AQ100	820	372	95.6	2428.20	57.38		1457.30	33.35		847
50HJ006 w/62AQ060	825	375	95.6	2428.20	57.38		1457.30	33.35		847
50HJ006 w/62AQ100	840	381	95.6	2428.20	57.38		1457.30	33.35		847
50HJ007 w/62AQ060	880	400	95.6	2428.20	57.38		1457.30	42.12		1070
50HJ007 w/62AQ100	895	407	95.6	2428.20	57.38		1457.30	42.12		1070

Fig. 6A — Rigging Label — COBRA™ Energy Recovery Unit — Sizes 48/50HJ004-007

Step 5 — Install Flue Hood (48HJ Rooftop Sec- tions Only) — Refer to the 48HJ installation instructions for information on installing the flue hood.

Step 6 — Install Gas Piping (48HJ Rooftop Sec- tions Only) — Refer to the 48HJ installation instructions for information on installing the gas piping.

Step 7 — Install External Trap For Condensate Drain — The condensate from the rooftop unit along with condensate from the upper coil of the energy recovery section is internally piped to the condensate pan in the lower section of the energy recovery section. For this reason, the bottom drain on the rooftop unit CANNOT be used for a condensate drain. The 3/4-in. drain connection on the energy recovery section is located near the bottom left of the exhaust air section. See Fig. 5A and 5B. The energy recovery section must have a field-fabricated, external, P-trap installed for condensate drain- age. Trap must be at least 4-in. deep to protect against freeze- up. If the drain line is installed downstream from the external

trap, pitch the line away from the unit at 1-in. per 10-ft of run. Do not use a pipe smaller than the connection (3/4-in.).

Step 8 — Make Electrical Connections

Unit cabinet must have an uninterrupted, unbroken electri- cal 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 com- partment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI/NFPA, latest edition, and local electrical codes. Do not use gas piping as an electrical ground. Fail- ure to follow this warning could result in the installer being liable for personal injury of others.

FIELD POWER SUPPLY — All units except 208/230-v units are factory wired for the voltage shown on the nameplate.

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