Raypak 399B-2339B operating instructions Material Vent Length, Termination

	Certified		Maximum	Combustion		Air Inlet Max. Length*
Model		Vent		Air
	Venting		Equivalent
No.		Size		Intake Pipe
	Material		Vent Length*		6”		8”	10”	12”
				Material
399B					100’
		6”
499B					75’
649B							100’
					40’
749B		8”
899B					30’		80’
			70’Room Air	Galvanized
989B		10”
	Category III			Steel,
1259B			40’ Ducted	PVC, ABS,				75’	100’
			Combustion Air	CPVC
		12”
1529B
1799B
1999B		14”
								40’	75’
2069B
2339B		16”

*Subtract 10 ft per elbow. Max. 3 elbows.

Maximum combustion air duct length terminated at 100 equivalent ft.

Table M: Category III Horizontal and Direct Venting

The vent must be installed to prevent flue gas leakage. Care must be taken during assembly to ensure that all joints are sealed properly and are airtight. The vent must be installed to prevent the potential accumulation of condensate in the vent pipes. It is required that:

1.The vent must be installed with a slight downward slope of not more than 1/4 inch per foot of hori- zontal run to the vent terminal.

2.The vent must be insulated through the length of the horizontal run.

For installations in extremely cold climate, it is re- quired that:

1.The vent must be installed with a slight upward slope of not more than 1/4 inch per foot of hori- zontal run to the vent terminal. In this case, an approved condensate trap must be installed per applicable codes.

2.The vent must be insulated through the length of the horizontal run.

Termination

The flue direct vent cap MUST be mounted on the ex- terior of the building. The direct vent cap cannot be installed in a well or below grade. The direct vent cap must be installed at least 1 ft above ground level and above normal snow levels. The Raypak-approved stainless steel flue direct vent cap must be used (sales order option D-15).

WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would jeopardize the safety and health of inhabitants.

Use only the special gas vent pipes listed for use with Category III gas burning heaters, such as the AL29-4C stainless steel vents offered by Heat Fab Inc. (800- 772-0739), Protech System, Inc. (800-766-3473), Z-Flex (800-654-5600) or American Metal Products (800-423-4270). Pipe joints must be positively sealed. Follow the vent manufacturer’s installation instructions carefully.

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