Quadra-Fire QFP38-LP, QFP38-NG 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.

NOTICE: Treatment of ceiling firestops and wall shield firestops 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.

To further prevent drafts, the wall shield and ceiling fire- 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.

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

WARNING! Risk of Fire! Maintain specified 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 fireplace or chimney.

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

1in.

(25 mm)

				D
1 in.
(25 mm)
1 in.
(25 mm)
Drywall
0 in.
ALL SURFACES MUST BE FLUSH
WITH THE BOTTOM OF THE UNIT.			B
0 in. to level			C
			A
of standoffs
30 in.
(762 mm)		A	B	C	D
to ceiling		Rough Opening	Rough Opening	Rough Opening	Rough Opening
Model		(Width)	(Height)	(Depth)	(DVP Pipe)
QFP38	in.	45 1/2	59	23 1/2	10
	mm	1156	1499	597	254

ObjectCombustible	36 in.
	(914 mm)

Figure 5.2 Clearances to Combustibles

0 in.

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

Note: Door frame fits flush to the bottom edge of unit. Do not put a raised hearth above the bottom edge of appliance, or doors will not fit.

Quadra-Fire • QFP38 Series • 4061-300 Rev i • 9/09 29