Raypak 5042004 Outdoor Installation, Model, Certified, Combustion Air, Air Inlet, Horizontal

Model	Certified	Vent	Maximum		Combustion Air		Air Inlet
			Horizontal			Max. Length** (ft)
No.	Vent	Size	Vent Length		Intake Pipe	6” Ø	8” Ø	10” Ø
	Material	(in.)	(ft)**		Material
504		8
754		10			Galvanized Steel,	45	100t
1104	Category III	10	75		PVC,
					ABS,
1504		12			CPVC		45	85t
2004		14
** Subtract 10 ft per elbow. Max. 4 elbows.
t Adapters supplied by others.
	Table N: Category III Horizontal Vent & Horizontal Direct Vent
				a minimum clearance of 4 ft horizontally from and in no
				case above or below (unless a 4 ft horizontal distance
				is maintained) electric meters, gas meters, regulators
				and relief equipment. The distance of the vent terminal
				from adjacent public walkways, adjacent buildings,
				open windows and building openings must be consis-
				tent with the NFGC (U.S.) or B149 (Canada).
				Flues supported only by flashing and extended above
				the roof more than 5 ft should be securely guyed or
				braced to withstand snow and wind loads.
				The air inlet opening MUST be installed 1 ft above the
				roof line or above normal snow levels that might ob-
				struct combustion air flow. This dimension is critical to
				the correct operation of the heater and venting system
				and reduces the chance of blockage from snow. The
				vent cap must have a minimum 3 ft vertical clearance
Fig. 28: Direct Vent - Vertical				from the air inlet opening.
				WARNING: No substitutions of flue pipe or vent
CAUTION: This venting system requires the
				cap material are allowed. Such substitutions would
installation of a condensate drain in the vent piping				jeopardize the safety and health of inhabitants.
per the vent manufacturer’s instructions. Failure to
install a condensate drain in the venting system will				Outdoor Installation
void all warranties on this heater.
See Table L for Category I venting guidelines.				Outdoor models must be vented with listed vent mate-
It is recommended that the intake vent be insulated in				rial per the following instructions and installed with the
				optional factory-supplied outdoor vent kit. A special
colder climates.				vent cap and air intake hood are provided in accor-
Termination				dance with CSA requirements. These must be
				installed as illustrated in Fig. 29.
The flue terminal should be vertical and should termi-				Care must be taken when locating the heater out-
nate outside the building at least 2 ft above the highest				doors, because the flue gases discharged from the
point of the roof within 10 ft. The vent cap should have 29