Carrier 58MEC General, Electrostatic Discharge ESD Precautions, Unit Damage Hazard

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified service agency personnel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions described in User’s Information Manual such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions that may apply.

	Follow all safety codes including the current edition of the
	National Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1 in the
	USA, CSA B149.1-05 National Standard of Canada, Natural Gas
	and Propane Installation Codes (NSCNGPIC) in Canada, and the
	Installation Standards, Warm Air Heating and Air Conditioning
	Systems (NFPA 90B) ANSI/NFPA 90B. Wear safety glasses and
58MEC	work gloves. Have a fire extinguisher available during start-up and
	adjustment procedures and service calls.
	!	CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in damage to furnace.

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

GENERAL

This furnace can be installed as a direct vent (2-pipe) or non-direct vent (1-pipe) condensing gas furnace. These instructions are written as if the furnace is installed in an upflow application. An upflow furnace application is where the blower is located below the combustion and controls section of the furnace, and conditioned air is discharged upward. Since this furnace can be installed in any of the 4 positions shown in Fig. 2, you may need to revise your orientation to component location accordingly.

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ISO 9001:2000

CERTIFIED

REGISTERED

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U L T	R A	H I	G H	E	F F I C I E N	C Y
G A	S	F	U R N A N C			E

A05079

Fig. 1 -- Multipoise Furnace in Upflow Orientation

AIRFLOW

UPFLOW

	HORIZONTAL		HORIZONTAL
	LEFT		RIGHT
		DOWNFLOW
AIRFLOW			AIRFLOW

AIRFLOW

A05085

Fig. 2 -- Multipoise Orientation

ELECTROSTATIC DISCHARGE (ESD)

PRECAUTIONS

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may damage furnace components.

Electrostatic discharge can affect electronic components. Take precautions during furnace installation and servicing to protect the furnace electronic control. Precautions will prevent electrostatic discharges from personnel and hand tools which are held during the procedure. These precautions will help to avoid exposing the control to electrostatic discharge by putting the furnace, the control, and the person at the same electrostatic potential.

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