Quadra-Fire QFP44 owner manual B. Construct the Appliance Chase, C. Clearances

B. Construct the Appliance Chase

A chase is a vertical box-like structure built to enclose the gas appliance and/or its vent system. In cooler climates the vent should enclosed inside the chase.

NOTICE: Treatment of ceiling restops and wall shield restops and construction of the chase may vary with the type of building. These instructions are not substitutes for the requirements of local building codes. Therefore, you MUST check local building codes to determine the requirements to these steps.

Chases should be constructed in the manner of all out- side walls of the home to prevent cold air drafting prob- lems. The chase should not break the outside building envelope in any manner.

Walls, ceiling, base plate and cantilever oor of the chase should be insulated. Vapor and air in ltration barriers should be installed in the chase as per regional codes for the rest of the home. Additionally, in regions where cold air in ltration may be an issue, the inside surfaces may be sheetrocked and taped for maximum air tightness.

To further prevent drafts, the wall shield and ceiling re- stops should be caulked with high temperature caulk to seal gaps. Gas line holes and other openings should be caulked with high temp caulk or stuffed with unfaced insu- lation. If the appliance is being installed on a cement slab, a layer of plywood may be placed underneath to prevent conducting cold up into the room.

C. Clearances

NOTICE: Install appliance on hard metal or wood surfaces extending full width and depth. DO NOT install directly on carpeting, vinyl, tile or any combustible material other than wood.

WARNING! Risk of Fire! Maintain speci ed air space clearances to appliance and vent pipe:

•Insulation and other materials must be secured to prevent accidental contact.

•The chase must be properly blocked to prevent blown insulation or other combustibles from entering and making contact with replace or chimney.

•Failure to maintain airspace may cause overheating and a re.

1-1/2 in.

(38 mm)

Combustible Object

1-1/2 in.

(38 mm)

Note: If the inside of the framed cavity is to be nished, the framing dimensions must include the nished surface. If drywall is to be attached to the rear wall, the depth must be

1-1/2 in.measured from the drywall surface.

(38 mm)

	Drywall
	0 in.
Combustible flooring may be installed
next to the front of the appliance.	D
ALL SURFACES MUST BE FLUSH
WITH THE BOTTOM OF THE UNIT.
0 in. to level
of standoffs
40-7/8 in.
(1038 mm)
to ceiling

		B
		C
		A
36 in.
(914 mm)	0 in.
		A	B	C	D
		Rough Opening	Rough Opening	Rough Opening	Rough Opening
	Model	(Width)	(Height)	(Depth)	(DVP Pipe)
	inches	52	66 5/8	31	10
	QFP44	1321	1692	787	254
	mm

Figure 5.2 Clearances to Combustibles

Quadra-Fire • QFP44 • 4051-300 Rev M • 09/08 25