Empire Comfort Systems MILLIVOLT DVCP36SP30N-1 Installation Instructions And Owner's Manual page 22

Vertical Vent Pipe Clearance
NOTICE: Need 2-inch clearance around pipe for the first
12 inches above Firebox. See Figure 26.
2" MIN. CLEARANCE
AROUND VENT PIPE
Horizontal Vent Clearances
For horizontal vent, maintain a minimum 1 inch clearance
to the bottom and sides of the vent, and 3 inch clearance to
combustibles above the vent pipe. See Figure 27.
Page 22
INSTALLATION
Figure 26
Figure 27
45° ELBOW WITH HORIZONTAL TERMINATION
3" MININUM CLEARANCE
TO COMBUSTIBLES
IN WALL
WALL THIMBLE
46-13/16" TO COMBUSTIBLES
ABOVE VENT INSIDE WALL
Figure 28
45°ELBOW
MINIMUM PIPE LENGTH
(A)
(Dimensions in inches)
9
12
18
24
MAXIMUM REAR VENT RUN BY GAS TYPE
PIPE LENGTH FIREPLACE TO
(A) EXTERIOR WALL (B)
(Dimensions in inches)
84 (7ft)
36 (3 ft)
Figure 29
VENT
CAP
A
VENT CAP
WALL FIRESTOP/
THIMBLE
B
FIREPLACE TO EXTERIOR
WALL (B)
10-5/8
13-5/8
19-5/8
25-5/8
GAS
TYPE
84-5/8 Natural
36-5/8 Propane
36092-10-0619