Heatiator IDV4833IT 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 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 outside walls of the home to prevent cold air drafting problems. The chase should not break the outside building envelope in any manner.

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.

To further prevent drafts, the wall shield and ceiling firestops should be caulked with caulk with a minimum of 300ºF con- tinuous exposure rating to seal gaps. Gas line holes and other openings should be caulked with caulk with a mini- mum of 300ºF continuous exposure rating or stuffed with unfaced insulation. 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 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 fi replace or chimney.

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

1-1/2 in.(38 mm) D

1-1/2 in.

(38 mm)

1/2 in. (13 mm)

Drywall

Combustible flooring may be installed next to the front of the appliance.

0 in.

B

C

A

30in. (762 mm) to ceiling

Object 36 in.

0 in. TO LEVEL OF STANDOFFS

		A	B	C	D
		Rough	Rough	Rough	Rough
		Opening	Opening	Opening	Opening
Model #		(Width)	(Height)	(Depth)	(vent pipe)
IDV4833I	in.	47-1/2	45-1/2	30-1/2	10
	mm	1207	1156	775	254
IDV6247I	in.	61-1/2	50	30-1/2	10
	mm	1562	1270	775	254

Combustible (914 mm)

	Adjust framing dimensions for interior sheathing (such as sheetrock)
	Note: Wiring for and the installation of the heat zone must be done
O in.	before framed enclosure is completed.

Figure 5.2 Clearances to Combustibles

18 Heatilator • ICON DV-IDV Series • 4042-575 • Rev. S • 5/11