Venting Fireplace - Rear - Empire Comfort Systems DVCD32FP30N-1 Owner's Manual

To Use the Vent Graph (Figure 31)
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 point of 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" (457 mm). 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.
Page 22

VENTING FIREpLACE - REAR

DVCD42FP(ONLY)
REAR HORIZONTAL
VENT CONNECTION
Venting Graph (Dimensions in Feet)
TOP EXIT- VERTICAL AND HORIZONTAL TERMINATION
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
HORIZONTAL RUN
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.
(DIMENSIONS IN FEET)
B
A
Figure 31
28365-2-0811