Crown Boiler BWC150/225 installation instructions VENT/ AIR Intake Fitting Equivalent Length

TABLE 1.4: VENT/ AIR INTAKE FITTING EQUIVALENT LENGTH

VENT FITTING	EQUIVALENT LENGTH (ft)
80/125mm 90° CONCENTRIC ELBOW	8.5
80/125mm 90° SWEEP CONCENTRIC ELBOW	5.5
80/125mm 45° CONCENTRIC ELBOW	3.0
80/125mm 90° CONCENTRIC SUPPORT ELBOW	8.5
100/150mm 90° SWEEP CONCENTRIC ELBOW	8.0
100/150mm 45° CONCENTRIC ELBOW	3.0
100/150mm 90° CONCENTRIC SUPPORT ELBOW	10.0

TABLE 1.5: SUMMARY OF VERTICAL VENTING OPTIONS

VENT OPTION #

CLASSIFICATION USED IN THIS MANUAL

ILLUSTRATED IN FIGURE

VENT PIPE PENETRATION

THROUGH STRUCTURE

AIR INTAKE PIPE STRUCTURE THROUGH STRUCTURE

VENT PIPE SIZE

AIR INTAKE PIPE SIZE

LENGTH	VENT	BWC225
		BWC150
MAXIMUM	INLET	BWC150
LENGTH	VENT	BWC225
		BWC225
		BWC150
MINIMUM	INLET	BWC225
		BWC150

VENT TERMINAL

AIR INTAKE TERMINAL

VENT MATERIAL

AIR INTAKE MATERIAL

8	9
VERTICAL	VERTICAL
CONCENTRIC	CONCENTRIC
1.7	1.7
ROOF	ROOF
ROOF	ROOF
80/125 mm CONCENTRIC	100/150 mm CONCENTRIC
47
	45
47
	45
2
	2
2
	2
CROWN #230532	CROWN #230570
CONCENTRIC TERMINAL	CONCENTRIC TERMINAL
(TABLE 1.6a)	(TABLE 1.6b)
CROWN 80/125 mm VENT	CROWN 100/150 mm VENT
COMPONENTS SHOWN IN	COMPONENTS SHOWN IN
TABLE 1.6a	TABLE 1.6b

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