Burnham 2PV Series Installation, Operating And Service Instructions page 12

D.
Install Vent Pipe, General.
1. Plan venting system to avoid possible contact with
plumbing or electrical wires. Start venting system at
vent connector and work toward the vent terminal.
2. Use non-combustible ¾ inch pipe strap to support
horizontal runs, maintain vent location and slope,
while preventing sags in pipe. Do not restrict
thermal expansion or movement of vent system.
Maximum support spacing is 5 feet. Do not
penetrate any part of the vent system with fasteners.
3. Provide and maintain vent pipe minimum clearance
to combustible materials. Vent pipe minimum
clearance to combustible material is fi ve (5) inches
when vent is installed in a fully enclosed (chase)
application or four (4) inches when vent is installed
with at least one side open, similar to a joist bay
application. Use thimble when penetrating
combustible wall.
a. 203PV and 204PV – Single wall thimble,
Burnham Part No. 8116116. Other wall thimble
manufac-turers are American Metal Products,
Hart & Cooley, and Metal Fab.
b. 205PV and 206PV – Double wall thimble,
Burnham Part No. 8116115 (accommodates 5
inch to 8-3/4 inch wall thickness). Another wall
thimble manufacturer is Hart & Cooley.
4. Once a vent pipe manufacturer and system is chosen
never mix and match vent systems.
5. If a non-standard length pipe is required:
Gasketed Vent System: The use of the adjustable length
pipe (P/N 8116319U) is recommended to complete a
non-standard pipe length. This pipe requires a
minimum installed length of 12¾ inch and can
adjust across a 7 inch gap up to a maximum of 19¾
inch long. (Note for the adjustable pipe the installed
length should be measured from the centerline of the
bead on the male end of the fi rst pipe to the end of
the female pipe excluding the locking band of the
second pipe with a single gasket.) Only in the event
the adjustable length pipe is not suffi cient a standard
length pipe may be cut using the procedure outlined
below for the Gasket-Less Vent System.
W A
N e v r e e x c e e d m a i x m
1 9 ¾ n i c h e s f r o a d u j s
R s i k o f f u l e g a s e l a k
Gasket-Less Vent System: Carefully cut pipe to length
using a hacksaw with minimum 32 teeth per inch or
circular saw with metal abrasive wheel. Remove
male (bead) end only – female (bell) end accepts
next fi tting or pipe.
12
R N N I G
u m n i t s l a e l d e l n g h t f o
a t b e l e l n g h t p p i . e
a g e s i p o s i s l b . e
N
C t u m u t s b e s q u a e r
s a n d e d s m o o h t b e o f
e n s u e r o r u n d n e s s f o
g o l v e s b e o f e r n i s a t
s p e c f i e i d n i h t s i m a
6. Seal all Burnham Gasket-Less vent, Burnham mixed
vent (Gasket-Less and Gasketed) and fi eld cut joints
using Dow Corning Silastic 732 RTV, Dow Corning
Silastic 736 RTV, GE RTV106, Polybac #500 RTV,
Sil-bond RTV 4500 (Acetoxy) and Sil-bond RTV
6500. Do not use other adhesives or sealants.
E.
Install Vent Pipe, Burnham Gasket-Less Vent
System.
1. Procedure for Joining Burnham Gasket-Less Vent
Pipe and Fittings. See Figure 8A.
Figure 8A: Burnham Gasket-Less Vent Joint Detail
a. Clean joints of pipe or fi ttings using an alcohol
pad to remove any dirt and grease.
b. Slip a locking band over female (bell) end of
pipe/fi tting.
c. Apply a continuous 1/4 inch bead of sealant
around male end of joint no more than 1/8 inch
from end.
d. Align weld seams and use a slight twisting
motion to FULLY insert male end into female
end of joint. Ensure bead in male end rest against
the end of the female pipe.
e. Smooth sealant around joint for a continuous
seal. Reapply sealant if necessary.
f. Slip the locking band over joint and align closest
bead in locking band with bead in male end of
pipe.
g. Tighten locking band by HAND with a 5/16" nut
driver until snug plus ¼ turn. DO NOT
SECURE JOINTS WITH SHEET METAL
SCREWS OR POP RIVETS. DO NOT
PUNCTURE THE VENT SYSTEM!
O T C I E
w i h t p p i e a n d i f e l d
e r o j n i n i . g C r a f e l u
c t u p p i e b y h a n d
l l n i . g S e a j l i o t n w i h t
n u a . l
o r
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w i h t
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