Install Instructions
CG
i
GAS-FIRED
wATER
BOILER-
sERIEs
a-
Boiler
Manual
3e
Venting -
direct
exhaust - termination
I&
WARNING
!
Follow
instructio
ns
on
this page
when
detem
1i
n
in
g
ve
nt location
to
avoid possib
ili
ty
of
severe personal
injury, death
or
substantial property
damage.
l. Locate
the
bo
il
er
and
vent penetration through the
wall so all
requirements on this page
and
in
Fig-
ure
12
will be met. Al
so
follow
vent
manufacturer's
inst
ru
ctions.
2. Gases will fo
rm
white p
lum
e
in
wi
nt
er. P
lum
e could
obstruct window
view.
3.
Prevailing winds
co
uld cause freezing
of
co
nd
ensate
and
water/ice buildup
on
vent termination, building,
plants
or
roof. Ice buildup
on
ve
nt termination
can
cause boiler shutdown and buil
di
ng freeze up.
4. Wi
nd
s over 3 1
mp
h can cause nuisance boiler
shut
-
down
if
boiler is sidewall
ve
nted.
Th
is
could
result
in
loss
of
heat
to
building, causing freeze up.
5. Locate
or
guard vent termination to prevent
co
n·
densate from damaging exterior surfaces.
6. Locate
th
e vent termin
at
ion well away from trees,
shrubs,
and
decorative
items.
7. Locate
or
guard
ve
nt
to
prevent accidental contact
by people
or
pets.
8.
Do
not te
rminat
e
ve
nt
in
wi
nd
ow
we
ll, stairwell,
alcove,
courtyard,
or
other
recessed
areas.
9.
Do
not wrap or insulate
ve
nt
pipe
or
fittings.
l 0.
Do
not
t
er
minat
e
ve
nt
above
any
door
or
wi
nd
ow.
Condensate
ca
n
fre
.
e.ze,
causi
ng
ice
formations.
11
.
Do
not
co
nn
ect
Any o
th
er
appliance to
ve
nt
pipe.
Multiple boilers
to
a
co
mm
on
ve
nt
pip
e.
Figure 12 Vent terminati
on
m
ini
mum cl
earances
Opti
ona
l Snorkeling
Part
Nu
mber
550-
1
42-7
80/0712
12. Ca
nadi
an insta
ll
atio
ns - See
Bl49
.1 or
Bl49
.2
Installation Code.
Tem
1i
nate
vent
no less
than
6
feet from
ano
th
er
combustion air inlet, 3
fe
.et from
any
other
building opening, a
nd
3 feet from any gas
service regulator.
13. See Figure
12
, showing
that
the
ve
nt
mu
st
temli
-
nate:
more
th
an 4 feet bel
ow
or to side of all doors
or
wi
nd
ows.
more
th
an I foot ab
ove
gr
ade
or anticipated
snow
li
ne.
at least 7 feet above public walkway.
3 feet above any forced air intake within I 0
feet.
14. Vent
must
also t
er
minat
e:
at least
6 feet away from adjacent
wa
lls.
no closer
th
an
5 feet bel
ow
roof
overhang.
at least 4 feet horizontally
(and
in
no
case
above
or
bel
ow
unless a 4 foot horizontal
distance is maintained)
from
el
ectr
ic meters,
gas meters, regulators, relief valves,
and
othe
r
eq
uipment.
IS
. Site conditions
ma
y dictate greater clea
ran
ces.
16.
Do
not exte
nd
exposed
ve
nt
pipe outside of building
more
than
4 feet.
Condensate
could
freeze
and
block vent pipe.
I&
WARNING
!
A gas
vent
extending
th
r
ough
an
exterior wall shall
notterminate
ad
-
jacent
to th
e wall
or
below building
exte
nsions su
ch
as
eaves,
parapets,
balconies or decks. Failure
to
com
-
ply
could
result in severe personal
inj
ur
y,
death
or
substantial property
dan1age.
17