Enviro 50-1221 technical manual Fresh AIR Intake

Installation

OUTSIDE FRESH-AIR CONNECTION:

Outside fresh air is mandatory when installing this unit in airtight homes and mobile homes.

A Fresh-air intake is strongly recommended for all installations. Failure to install intake air may result in improper combustion as well as the unit smoking during power failures.

When connecting to an outside fresh air source, do not use plastic or combustible pipe. A 2” minimum (51

mm)ID (inside diameter) steel, aluminum or copper pipe should be used. It is recommended, when you are installing a fresh air system, to keep the number of bends in the pipe to a minimum.

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Figure 7: Outside Air Connection.

EXHAUST AND INTAKE LOCATIONS:

101/16"

(255mm)

61/8"

(156mm)

21/16"

(53mm)

Figure 8: Mini Inlet and Outlet Location.

EXHAUST
Base of unit to center of flue	10 1/16” (255 mm)
Center of unit to center of flue	0”	(0 mm)
	[at center of unit]
FRESH AIR INTAKE.
Base of unit to center of intake	61⁄8”	(156 mm)
Center of unit to center of intake	21/16”	(53 mm)

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