Vermont Casting DVRSL, DVRS3, DVRSR installation instructions Vertical Through Roof Applications

FOUNDATION

RECESS

WATERTIGHT

SEAL

AROUND

PIPE

SNORKEL

WALL

SCREWS

SHEET METAL	Fig. 26
SCREWS

e)The maximum number of elbow degrees in system is 270º (this does not include transition elbow from rear vent to vertical vent).

If the foundation is recessed, use recess brackets (not supplied) for securing lower portion of the snorkel. Fasten brackets to wall first and then secure to snorkel with self drilling #8 x 1/2 sheet metal screws. It will be necessary to extend vent pipes out as far protruding wall face (Fig. 26).

VERTICAL THROUGH THE

ROOF APPLICATIONS

MAXIMUM

10 FT. (3408mm)

MINIMUM 8 FT.

MAXIMUM 40 FT.

VERTICAL RISE

PIPE STRAPS

EVERY 3 FT. (914mm)

Fig. 27

This Gas Fireplace has been approved for,

a)Vertical installations up to 40 feet (12 metres) in height. Up to a 10 ft.(3048mm) horizontal vent run can be installed within the vent system using a maximum of three 90º elbows.

b)Up to two 45º elbows may be used within the horizontal run. For each 45º elbow used on the horizontal level the maximum horizontal length must be reduced by 18 inches (457mm).

Example: Maximum horizontal length

0	-	45º elbows	10 ft. (3048mm)
1	-	45º elbows	8.5 ft. (2590mm)
2	-	45º elbows	7 ft. (2133mm)

c)A minimum of an 8 ft. vertical rise.

d)Two sets of 45 degree elbow offsets within these vertical installations. From 0 to a maximum of 8 ft. (2438mm) a vent pipe can be used between elbows. (Fig. 30)

				Fig. 28
Sample:	1	-	90º
	2	-	45º
	3	-	45º
	4	-	45º
	5	-	90º
	Total	-	270º

f)7DVCS must be used to support offsets. (Fig. 30). This application will require that you first determine the roof pitch and use the appropriate 7DVSKV (A,B or F). (see Venting Components, page 17)

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