SECTION 9: G
AS
P
IPING
41 of 59
SECTION 9: GAS PIPING
Install the gas hose as sho
w
The gas hose accommodates expansion of the
heating system and allo
w
s for easy installation and
ser
v
ice of the
bu
rner. Before connecting the
bu
rners
to the s
u
pply system,
v
erify that all high press
u
re
testing of the gas piping has
b
een completed.
There is an expansion of the t
ub
e
w
ith each firing
cycle; this
w
ill ca
u
se the
bu
rner to mo
v
e
w
ith respect
to the gas hose. This can ca
u
se a gas leak res
u
lting
in an
u
nsafe condition if the gas connection is not
made strictly in accordance
w
ith
Meter and ser
v
ice m
u
st
b
e large eno
u
gh to handle all
the
bu
rners
b
eing installed pl
u
s any other connected
load. The gas hose
w
hich feeds the system m
u
st
b
e
large eno
u
gh to s
u
pply the req
u
ired gas
w
ith a
maxim
u
m press
u
re drop of 1/2"
w
.c. When gas piping
is not incl
u
ded in the layo
u
t dra
w
ing, the local gas
s
u
pplier
w
ill
u
s
u
ally help in planning the gas piping.
Gas lines m
u
st meet applica
b
le codes:
United States:
The Flexi
b
le Stainless Steel Gas
Hose (US models) s
u
pplied
w
ith the heater is certi-
fied per the Standard for Connectors for Gas Appli-
ances, ANSI Z21.24/CSA 6.10 - latest re
v
ision.
Canada:
The R
ubb
er Type 1 Gas Hose (Canadian
models) optional
w
ith the heater is certified as
b
eing
in compliance
w
ith the Standard for Elastomeric
Composite Hose and Hose Co
u
plings for Cond
u
cting
Propane and Nat
u
ral Gas, CAN/CGA 8.1 - Latest
re
v
ision.
• Check the pipe and tubin
g
ends for leaks
before placin
g
heatin
g
e
q
uipment into
service. When checkin
g
for
g
as leaks, use a
soap and water solution; never use an open
flame.
WARNING
Fire Hazard
Tighten gas hose fittings to connect gas
supply according to Figure 23.
Gas hose can crack when twisted.
Gas hose moves during normal operation.
Use only 36" (91 cm) long connector of 1/2" or
3/4" nominal ID.
Connector supplied with heater for U.S.
models (not with Canadian models).
Failure to follow these instructions can result
in death, injury or property damage.
WARNING
Explosion Hazard
Leak test all components of gas piping
before operation.
Gas can leak if piping is not installed
properly.
Do not high pressure test gas piping with
heater connected.
Failure to follow these instructions can result
in death, injury or property damage.
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 ...
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