Roberts Gorden BH Series service manual Common Vertical Venting, Top View

ROBERTS GORDON ® BH-SERI E S SUBM IT TAL SHE E T
Common Vertical Venting
			Type "B" vent cap
			(7" or 8" may be used.
			These are not available
			from Roberts Gordon.)
			Type "B" vent pipe
	18" (46 cm)		Roof
	Min.		Flashing
			Roof
	The last section of vent pipe		Approved
	passing through the roof or
	wall may be Type "B" vent pipe.		Thimble
	All other vent materials in the		(if applicable)
	building must be single wall		Single Wall Pipe	Vent Adapter
Vent Adapter	vent pipe.
4" (10 cm)		“D”	“D” Area must equal sum	4" (10 cm)
Single Wall Pipe				Single Wall Pipe
			of open area of
			individual vents.

Top View

© 2004 Roberts-Gordon	BEFORE IN STALLATI ON AND OPER ATI ON OF HEATI NG EQUIPMENT, READ AND U NDERSTAND THE INSTALLATION, OPERATIO N AND SERVICE MANUAL .
	APPLICATION S, ENGI NEERING AND DETAI LED GUID ANCE ON SYSTEMS DESIGN, INSTALLATI ON AND PRODUCT PERFORMANCE IS AVAI LABLE UPON REQUEST. ROBERTS GORDON® PRODUCTS ARE TO BE
	INSTALLED ONLY IN ACCORDANCE WI TH LOCAL LAWS, CODES AND REGULATIONS, AND ONLY BY A CONTRACTOR QUALI FIED I N THE I NSTALLATION AND SERVICE OF GAS-FIRED HEATING EQUI PMENT.