Monessen Hearth 36CDVXTRN Always install horizontal venting on a level plane

CDVX Series Direct Vent Gas Fireplace

Example:
	Elbow 1	=	90°
	Elbow 2	=	45°	4
	Elbow 3	=	45°
	Elbow 4	=	90°
Total angular variation		=	270°
	1 + 2 + 3 + 4 = 270°
				3
	1		2
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Fig. 48	Maximum number of elbow degrees.

STEP 2

Place fireplace into position. (Fig. 49) Measure the verti- cal height (X) required from the base of the flue collars to the center of the wall opening.

STEP 3

Attach appropriate venting component(s) to the fire- place with three (3) screws. (Fig. 50) Follow with the installation of the inner and outer elbow. Again secure joints with three (3) sheet metal screws.

X

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Fig. 49 Vertical height requirement.

STEP 4

Measure the horizontal length requirement including a 2” (51 mm) overlap, ie from the elbow to the outside wall face plus 2” (51 mm) (or the distance required if installing a second 90° elbow). (Fig. 50)

X

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Fig. 50 Horizontal length requirement.

Always install horizontal venting on a level plane.

STEP 5

Use appropriate length of pipe sections - telescopic or fixed - and install the horizontal vent sections. The sec- tions which go through the wall are packaged with the starter kit, and can be cut to suit if necessary. (Fig. 48)

Sealing the gaps between the vent pipe and firestop with high temperature sealant will restrict cold air being drawn in around fireplace.

STEP 6

Guide the vent terminations 4” and 7” collars into their respective vent pipes. Double check that the vent pipes overlap the collars by 2” (51 mm). Secure the termina- tion to the wall with screws provided and caulk around the wall plate to weatherproof. (Fig. 52) As an alterna- tive to screwing the termination directly to the wall you may also use expanding plugs or an approved exterior construction adhesive. You may also attach the termi- nation with screws through the inner body into the 4” (102 mm) vent pipe however for this method you must extend the 4” (102 mm) pipe approximately 6” (152 mm) beyond the outer face of the wall.

Support horizontal pipes every 3’ (914 mm) with metal pipe straps. Make sure the horizontal vent pipe is in- stalled on a level horizontal plane.

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