SECTION
8
: V
ENTING
35 of 59
SECTION
8
: VENTING
8
.1 Ventin
g
This heater m
u
st
b
e
v
ented in accordance
w
ith the
r
u
les contained in this man
u
al and
w
ith the follo
w
ing
national codes and any state, pro
v
incial or local
codes
w
hich may apply:
United States:
Refer to National F
u
el Gas Code
NFPA 54/ANSI Z223.1 - latest re
v
ision.
Canada:
Refer to Nat
u
ral Gas and Propane
Installation Code CSA B149.1 - latest re
v
ision.
Exha
u
st end of heater
w
ill accept a 4'' (10 cm)
v
ent
pipe
u
sing the
v
ent adapter (P/N 90502700). To
pre
v
ent leakage of condensation, install the
v
ent
adapter
w
ith the seam on top and seal the joint
u
sing
a high temperat
u
re silicone sealant.
Any portion of
v
ent pipe passing thro
u
gh a
com
bu
sti
b
le
w
all m
u
st ha
v
e an appro
v
ed thim
b
le
to conform
w
ith the a
b
o
v
e listed codes.
Vent pipe m
u
st
b
e sloped do
w
n
w
ard a
w
ay from the
heater 1/2'' (1 cm) for e
v
ery 20' (6 m).
The heater may
b
e indi
v
id
u
ally
v
ented or common
v
ented. When
v
enting horizontally, a maxim
u
m of t
w
o
heaters can
b
e commonly
v
ented.
. When
v
enting
v
ertically, a maxim
u
m of
fo
u
r heaters can
b
e commonly
v
ented.
.
The heater may also
b
e installed
u
n
v
ented in certain
circ
u
mstances according to
bu
ilding
v
entilation
codes. Refer to the a
b
o
v
e codes
for f
u
rther information. Un
v
ented
operation also req
u
ires compliance
w
ith the
clearances to com
bu
sti
b
les gi
v
.
The
b
ottom of the
v
ent or air intake terminal shall not
b
e located less than 1' (0.3 m) a
b
o
v
e grade le
v
el.
The
v
ent shall not terminate less than 7' (2.1 m)
a
b
o
v
e grade
w
here located adjacent to p
ub
lic
w
alk
w
ays.
Vent terminal m
u
st
b
e installed at a height s
u
fficient
to pre
v
ent
b
lockage
b
y sno
w
, and
bu
ilding materials
protected from degradation
b
y fl
u
e gases.
Sec
u
re all joints
w
ith #8 x 3/8 sheet metal scre
w
s.
Seal all joints
w
ith high temperat
u
re silicone sealant.
Vent terminal m
u
st
b
e
b
eyond any com
bu
sti
b
le
o
v
erhang.
8
.1.1 United States Re
q
uirements
Vent m
u
st terminate at least 3' (0.9 m) a
b
o
v
e any
forced air inlet located
w
ithin 10' (3.1 m).
Vent m
u
st terminate at least 4' (1.2 m)
b
elo
w
, 4'
(1.2 m) horizontally from, or 1' (0.3 m) a
b
o
v
e any
door, opera
b
le
w
indo
w
, or gra
v
ity air inlet into any
bu
ilding.
8
.1.2 Canadian Re
q
uirements
The
v
ent shall not terminate
w
ithin 6' (1.8 m) of a
mechanical air s
u
pply inlet to any
bu
ilding.
The
v
ent shall not terminate
w
ithin 3' (0.9 m) of a
w
indo
w
or door that can
b
e opened in any
bu
ilding,
any non-mechanical air s
u
pply inlet to any
bu
ilding,
or of the com
bu
stion air inlet of any other appliance.
WARNING
Carbon Monoxide Hazard
Heaters installed unvented must be interlocked
with sufficient building exhaust.
Heaters must be installed according to the
installation manual.
Failure to follow these instructions can result
in death or injury.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
Содержание BH-40
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Страница 51: ...SECTION 10 WIRING 45 of 59 10 3 Internal Wiring ...
Страница 58: ...BH SERIES INSTALLATION OPERATION AND SERVICE MANUAL 52 of 59 ...
Страница 59: ...SECTION 12 TROUBLESHOOTING 53 of 59 12 2 Manifold Gas Pressure Setting ...
Страница 61: ...SECTION 13 REPLACEMENT PARTS 55 of 59 ...
Страница 64: ...BH SERIES INSTALLATION OPERATION AND SERVICE MANUAL 58 of 59 ...
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