Vermont Casting H33BDVRRNP manual Vertical Through-the-Roof Applications

Pyromaster© H33BDVRRN/P

If the foundation is recessed, use recess brackets (not supplied) for securing lower portion of the snorkel. Fasten brackets to wall first, 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 as protruding wall face. (Fig. 28)

Example: Maximum horizontal length

0 x 45° elbows = 10’ (3048mm)

1 x 45° elbows	= 8¹⁄₂’ (2590mm)
2 x 45° elbows	= 7’ (2133mm)
c. A minimum of an 8’ vertical rise.
d. Two sets of 45° elbows offsets within these vertical
installations. From 0 to a maximum of 8’ (2438 mm)
of vent pipe can be used between elbows. (Fig. 30)
e. 7DVCS must be used to support offsets. (Fig. 32)

Foundation Recess

Recess Brackets

Watertight Seal

Around Pipe

Snorkel

Wall Screws

Sheet Metal

Screws

CFM139

This application will require that you first determine

the roof pitch and use the appropriate 7DVSKV (A,

B or F). (Refer to Venting Components List, pages

18, 19)

Max.

8 Feet

(2438mm)

Fig. 28 Snorkel installation, recessed foundation.

Vertical Through-the-Roof Applications

This Gas Fireplace has been approved for:

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

Minimum	Maximum
8ft. /	10ft.
Maximum	(3048mm)
40 ft. Vertical
Rise
	Pipe Straps
	Every 3’
	(914mm)
	CFM148
Fig. 29 Vertical through-the-roof application.

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

45°
Max.	40 Feet
8 Feet	(12.2m)
(2438mm)

45°

CFM140

Fig. 30 Typical straight-up installation.

Vertical Through-the-Roof Installation

1.Locate your fireplace.

2.Plumb to center of the (4”) flue collar from ceiling above and mark position.

3.Cut opening equal to 9³⁄₈” x 9³⁄₈” (240 mm x 240 mm).

4.Proceed to plumb for additional openings through the roof. In all cases, the opening must provide a minimum of 1 inch clearance to the vent pipe, i.e.,the hole must be at least 9³⁄₈” x 9³⁄₈” (240 mm x 240 mm).

5.Place fireplace into position.

16 10004798