Field Controls SWG Stainless, SWGII OIL GAS Maximum Equivalent Feet of Vent Pipe

INSTALLATION OF SWG POWER VENTER (See Table 1)

Table 1

UNIT SIZING CHART

OIL	GAS		MAXIMUM EQUIVALENT FEET OF VENT
				PIPE
MAX*	MAX**		AT MAX BTU/HR		AT 60% OF MAX	VENTING WITH	MODEL
OIL GPH	BTU/HR.
			INPUT		BTU/HR INPUT	VENT PIPE SIZE
INPUT	IMPUT
		21			80	3”
N/A	70,000						SWG-3
		50			100	4”
		---			---	---
		---			23	3”	SWGII-4HD
1.10	170,000	35			100	4”
							SWG-4s
		65			100	5”
		16			44	4”	SWGII-5
1.85	290,000
		51			100	5”
							SWG-5s
		95			100	6”
		28			78	5’”	SWGII-6
2.65	416,000	68			100	6”
							SWG-6s
		100			100	7”
		28			78	6”
3.60	566,000						SWG-7
		61			100	7”
		90			100	8”
		26			72	7”
4.75	740,000						SWG-8
		51			100	8”
		70			100	9”

*Rating at 100 psi. Sizing based on appliance maximum input rate not actual firing rate. **Do not exceed maximum BTU/HR input rating or maximum oil GPH input. For multiple venting system applications, add the input for each appliance. Category I gas-fired draft induced systems require an SWGII-4HD or larger. Category III gas-fired draft induced systems require an SWGII-5 or larger.

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