Roberts Gorden Energytube EM-115, Инструкция по установке, эксплуатации и обслуживанию

Страница: 43 / 82

SECTION 9: G
AS
P
IPING
37 of 71
SECTION 9: GAS PIPING
Install the gas hose as sho w n in Figure 18 . The gas
hose accommodates expansion of the heating
system and allo
w s for easy installation and ser v ice of
the b u rner. Before connecting the b u rners to the
s u pply system, v erify that all high press u re testing of
the gas piping has been completed.
There is an expansion of the t u be w ith each firing
cycle. This w ill ca u se the b u rner to mo v e w ith respect
to the gas line. This can ca u se a gas leak res u lting in
an u nsafe condition if the gas connection is not made
in strict accordance w ith Figure 18 .
Meter and ser v ice m u st be large eno u gh to handle all
the b u rners being installed pl u s any other connected
load. The gas line w hich feeds the system m u st be
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 applicable codes:
United States: The Flexible Stainless Steel Gas
Hose (US models) s u pplied w ith the heater is
certified per the Standard for Connectors for Gas
Appliances, ANSI Z21.24/CSA 6.10 - latest re
v ision.
Canada: The R u bber Type 1 Gas Hose (Canadian
models) optional w ith the heater is certified as being
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 ser-
vice. 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 21.
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.