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SUPPORT AND GUIDE SPACING FOR
Inside
MVS
diameter
Interior
Exterior
3"
10
4"
10
5"
10
6"
10
7"
10
8"
10
9"
10
10"
10
12"
10
14"
10
16"
10
18"
10
20"
10
22"
10
24"
10
SUPPORT AND GUIDE SPACING FOR
Inside
MVS
diameter
Interior
Exterior
3"
10
4"
10
5"
10
6"
10
7"
10
8"
10
9"
10
10"
10
12"
10
14"
10
16"
10
18"
10
20"
10
22"
10
24"
10
Table 6 - Dimensions are in feet
MVS : Maximum Vertical Spacing between Guides/Supports
MHS: Maximum Horizontal Spacing between Guides/Supports
MDE: Maximum Distance between Elbows
H: Maximum Freestanding Height above the Roof
S: Maximum Suspended Length
8
MODEL DS
MHS
MDE
H
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
MODEL DSD & DSID
MHS
MDE
H
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
8
12
12
10
*Important Notes:
1. For Anchor Plate (AP) / Anchor Plate Heavy Duty (APHD) / Wall Support
S
Heavy Duty (WSHD), the support must be installed below a bead. See
figure 5.
50
2. For Wall Support (WS) / Roof Support (RS) , the support can be installed
anywhere on the part.
100
3.
For Anchor plate length, the support is already integrated to a length. Directly
100
attached to the building structure or supported by non combustible structural
100
elements (not included). No other installation is required than the standard
installation for a regular length.
100
100
100
100
Anchor plate,
100
Anchor plate HD or
Bead
Wall support HD
100
100
100
100
100
100
A. Pass the female end through the
hole of the one part plate.
S
B. Install the two parts plate below
a bead and bolt it to the one part
plate.
50
50
50
Figure 5 - Position of support
50
50
50
50
HORIZONTAL INSTALLATION REQUIREMENTS
50
•
When venting through a sidewall, terminate the system not less than 12" (.3m)
50
above the ground and above the snow line in geographical areas where snow
50
accumulates. The termination area must be kept clear of snow and ice at all
times.
50
•
Terminate the system at least 7' (2.1m) above a public walkway or driveway,
50
no less than 6' (1.8m) from the combustion air intake of any appliance or 3'
50
(.9m) from any other building opening, gas utility meter, service regulator or
the like. Less distance is permitted if specified in the appliance's installation
50
instructions. It also shall terminate at least 3' (.9M) above any forced air inlet
50
within 10' (3.1m) and shall terminate at least 4' (1.2m) below, 4' horizontally
from, or 1' (.3m) above any door, window, or gravity air inlet into any building
as provided in the National Fuel Gas Code ANSI Z223.1 and NFPA 54. See
figure 6. Proper judgment may require greater distances depending on the
side of the equipment installed or to allow for snow drifting or falling from
falling from overhead roofs or trees. The termination should be far enough
away from trees, shrubs, or decorative items to prevent damage.
•
The total horizontal vent length from the appliance flue collar to the outside
termination shall be in accordance with the appliance manufacturer's instruc-
tions.
Bead
One part plate
Two parts
plate
Bolts and
nuts
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