Empire Comfort Systems DVD48FP5 Venting Fireplace - Rear, To Use the Vent Graph Figure, Example A

VENTING FIREPLACE - REAR

To Use the Vent Graph (Figure 29)

1.Determine the height of the center of the horizontal vent pipe. Using this dimension on the Sidewall Vent Graph, locate the point it intersects with the slanted graph line.

2.From the pointof this intersection, draw a vertical line to the bottom of the graph.

3.Select the indicated dimension, and position the unit in accordance with same.

EXAMPLE A:

If the vertical dimension from the floor of the unit is 12 feet, 4 inches the horizontal run to the outer wall flange must not exceed 12 feet, 3 inches.

EXAMPLE B:

If the vertical dimension from the floor of the unit is 6 feet, 9 inches, the horizontal run to the outer wall flange must not exceed 6 feet, 6 inches.

SPECIAL NOTE: For each 45 degree elbow installed in the horizontal run, the length of the horizontal run MUST be reduced by 18" (45cm). This does not apply if the 45 degree elbows are installed on the vertical part of the vent system. Reduce 3' for every 90° elbow.

Example: According to the chart the maximum horizontal vent length is 20' and if two 45 degree elbows are required in the horizontal vent it must be reduced to 17'.

The maximum number of 45 degree elbows permitted per side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run.

Note: When rear venting unit, adjust air shutter from 1/16" open up to between 1/8" and 3/16" for NAT gas.

Adjust air shutter from 1/4" open to between 5/16" and to 3/8" for LP gas.

Venting Graph (Dimensions in Feet)

REAR EXIT - VERTICAL AND HORIZONTAL TERMINATION

(DIMENSIONS IN FEET)

		40
		39
		38
		37
		36
		35
		34
		33
		32
		31
		30
		29
VERTICALDIMENSIONFROMTHEBOTTOMOFTHEUNIT TOTHECENTEROFTHEFLUEOUTLET		28
	WITHVERTICALORHORIZONTALTERMINATIONCAPS	27
		26
		A
		B
DVD48FP(ONLY)
REAR HORIZONTAL
VENT CONNECTION

HORIZONTAL RUN

Figure 29

Acceptable vertical and horizontal vent run.

Unacceptable vertical and horizontal vent run.

Note: When rear venting unit, adjust air shutter from 1/16" open up to between 1/8" and 3/16" for NAT gas.

Adjust air shutter from 1/4" open to between 5/16" and 3/8" for LP gas.

23552-1-0607 Page 19