Raypak HD101, HD401 manual Venting Installation Tips, Venting Configurations

Venting Installation Tips

Support piping:

·horizontal runs- at least every five (5) feet.

·vertical runs - use braces:

·under or near elbows

Follow items listed below to avoid personal injury or property damage.

·Cut nonmetallic intake pipe with fine-toothed hack- saw.

·Do not use nonmetallic intake pipe or fittings that are cracked or damaged.

·Do not use nonmetallic intake fittings if they are cut or altered.

·Do not drill holes, or use screws or rivets, in non- metallic intake pipe or fittings.

To make metallic vent joints:

·Do not install seams of vent pipe on bottom of runs.

·100% Seal all joints and seams with high temper- ature silicone sealant.

WARNING: Examine the venting system at least once a year. Check all joints and vent pipe connections for tightness, corrosion or deterioration.

NOTE: The words "Flue Exhaust", "Flue" and "Exhaust Vent" are used interchangeably.

on, Venting of Equipment, of the latest edition of NFGC, or in Canada, B149 Installation Code for Gas Burning Appliances and Equipment, or applicable pro- visions of local building codes.

Venting Configurations

For heaters connected to gas vents or chimneys, vent				Fig. 18: Natural Draft Vertical Venting (Category I)
installations shall be in accordance with the section
		Certified	Minimum	Min./Max. Venting Length without
Model	Appliance			Barometric Damper (feet)**		Air Inlet Max.
		Venting	Recommended
No.	Category					Length (feet)
		Material	Vent Size (inches)	Min.	Max.
HD101			4	6
HD151
HD201	I	Type B or		(HD201) 6	25	100
HD251		Equivalent	5	(HD251) 6
HD301				(HD301) 11
HD401			6	8

**Vent lengths are based on a lateral length of 2 feet. Refer to the latest edition of the NFGC for further details. (ANSI Z223.1)

Table J: Natural Draft Vertical Venting

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