Majestic Appliances UV36 Install Optional Outside Air Kit, Installation Instructions, 20007446

UV36 Vent-Free Firebox

6a Wallboard with Marble, Slate or Tile Facing		6c Wallboard with Facing and Mantel
		Finished Wall		Stud
Finished Wall
	Stud	Noncombustible		Header
	Header
		Decorative Cover	-	Must be enclosed with a
		ing
Noncombustible	Must be enclosed with a			noncombustible material.
Decorative Covering	noncombustible material.

	The bottom mantel projection must	be located a mini-
T234	mum of 9” above the fireplace opening. (Fig. 5b)		T235

			6d Wallboard with Facing-Not Flush
6b Brick or Stone Facing
Finished Wall			Finished Wall
	Stud			Stud
Brick or
Stone Facing	Header		Brick or
				Header
			Stone Facing
Steel Lintel*
			Steel Lintel*
			*Brick or stone facings lid up on the face of the fireplace must be
			sealed to it with a steel lintel. Attach the lintel to the fireplace face
			with sheet metal screws and seal it with a heat resistant sealer.
			The projecting portion of the lintel should be imbedded in a mortar
			joint or mortared to the bottom of the facing. The lintel acts as a
		T236	support and a firestop.		T237

Fig. 5 Finishing options.

Install Optional Outside Air Kit

The AKU3 Outside Air Kit can be installed to bring com- bustion air to the heated room air. The air that is drawn into the heated room air from outside the home or un- heated area helps relieve the pressure in the home. The duct termination should be located so it is exposed to an out-of-doors opening at least 100 square inches. If the duct termination must be located in a crawl space or basement, be sure the termination area has 100 square inches of ventilation opening to outside air.

The duct termination must be located so it does not compete for air flow with exhaust fans, gas vent hoods or other air consuming devices or appliances. It must not be obstructed by rafters, insulation materials or other obstructions. The less restrictive the air supply, the better the outside air kits will perform.

It is good practice to protect your hands and eyes during installation by wearing work gloves and safety glasses.

CAUTION: Do not install termination into a garage or other area that could contain flammable liquids or fumes, or into an attic space.

Installation Instructions

Determine the location of the fireplace as described in the fireplace installation manual. Then plan location of the duct termination and the route of the duct run between the fireplace and the duct termination.

Duct run must be limited to a maximum distance of 40’ (12.2m) from the fireplace pipe collar to duct termina- tion. This will provide the least restriction to air flow. No more than four (4) 90° elbows can be used. Duct run may be horizontal, vertical, inclined or any combina- tion of these. (Fig. 7) You are now ready to install the Outside Air Kit.

1.Remove the screws retaining the outside air cover- plate, if provided. (Located on the left side of front open units, on backside of multisided units.) Discard coverplate. (Fig. 8)

2.Secure the inlet collar assembly to the outer casing with four screws (not provided). (Fig. 9)

3.Slide the duct over the collar and attach the duct to the collar using the plastic tie straps or three (3) screws (screws not provided). Continue attaching the ducting together using three (3) screws at each joint until you have installed sufficient duct to arrive at your duct termination locations.

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