Weil-McLain GV90+ Installation And Start-Up Manual page 40

GV90+ Series 2
oAs·FIRED WATER BOILER -
Boiler ManuaJ
DIRECT VENT -
Sidewall with separate pipes
(convnuedJ
NOnCE For multiple boiler applications using the manifolded
combustion air option, the
\·tnt
can
bt terminated
in
an elbow as in Figure 47> page 39, or in a coupling or
sidewall re:rmination pl.are. The vtnrs must
be located
following the restrictio ns in Figure 41, page 35 and
Figur~
3*, page 31.
Prepare wall penetrations
1. Air pipe
pen~rari<>n:
a. Cut a hole for the air pipe. Si.ze
the
air pipe hole as dose as
desired to the air pipt outside diamettT.
2. Vent
pipe
penetrat ion:
a. Cut a hole fo r the • . -mt pipe. For either
combustible
o r no n-
combustible ronstrucrton, siu the vent pipe hole ar least 0.4»
larger than the vent pipe d iameter:
• 4• h<>lef<>r 3 • PVC
b. Inserr a galvaniud mrtal thimble in the \'fnr pipe hole as
shown in Figure 49.
3.
Use
a sidewall tenninarion plate as a remplart for corr«r location
o f hole centers. SidewaJI
t~mi narton
plates are included with the
Wtii-Mclain sidewall vent/air platt kit. shipped with each
boiler~
4. Foi!Qw all
1~1 «14~1
fQ r iw latiQn of
v~nt
p ip¢
wh~n
paning
through floors or walls.
5.
Seal exterior openings thoroughly with exterior cauJk.
Termination and fittings
1.
Prepare the vtnt termination elbow and tht air termination elbow
b y inserting b ird
~n.s.
(See Figure 47. page 39.) Bird
screen$
must
be
purchased St-pararely.
See
tht parts li.sr ar the end of
this
manuaJ for parr numbers.
2. When completed> the air termination coupling mu.sr
be
oriented
atlea.st 12 inches
~l ow
rhe vent termin ation and at least 12 inches
above g rade o r sno·w lint
as
shown in Figure 47. pagt 39.
3. You can o rient the vent re:rminarion elbow either d ir« d y our-
ward o r
90
degrees away from tht air inltt t lbow
as
shown in
Figurt 4 7. page 39.
4. Maintain the required dimensions of
the
finished termination
piping as shown in Figure 47. page 39.
5. For multiple boiler terminations,
s~
Figure 48> pagt 40.
6 . Do not extend txpOStd vtnr pipe outside of b uilding more th1111
shown in this document Condensate could frttte and block vent
pipe.
NOnCE
40
If txrtnd.ing the vt-nr and air pipes out from the waJI,
inmll • eoupling on eaeh pip!'. Mounr the piping wirh
the coupling flush with the outer plate.
Figure 48
Mtlliplesepara~
pipes
si~al terminalions
12'"
minimum b<twetn edge
ot air lntal<t
pipe~· ""'
a ru hl!jaeent
~~eot
pipe- , ...
t
Vf/11
mtall braces
no more - - --..
man 24 inches apart
Figure 4g S.Ciewall terrrinationassembly - using
separate pipes
®
'!!t~-
. •
.
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j
1hnl
pp;~
5 filnl .tmoQ!.IJ)I inodalb
l MrPfiaJ ' Aiiilild ....
3
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~p~
f .t
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1'
n,. (ftlll~)
l\lrt number 55(1-142-783/ 1 01'2