51
PART 6 – GAS PIPING
FAILURE TO FOLLOW ALL PRECAUTIONS IN THIS
SECTION COULD RESULT IN FIRE, EXPLOSION, OR
DEATH!
A. GAS CONNECTION
The gas supply shall have a maximum inlet pressure of
less than 14" w.c. (3.5 kPa), and a minimum of 3.5" w.c.
(.87 kPa). The entire piping system, gas meter and
regulator must be sized properly to prevent pressure drop
greater than 0.5" (.12 kPa) as stated in the National Fuel
Gas Code. This information is listed on the rating label.
It is very important that you are connected to the type of gas noted on the rating plate.
“LP” for liquefied
petroleum, propane gas, or “NAT” for natural or city gas. You must not do a gas conversion without an approved
gas conversion kit. Prior to turning the gas on, all gas connections must be approved by the local gas supplier or
utility, in addition to the governing authority.
A gas conversion kit comes with the boiler. Follow the included instructions VERY carefully. Failure to follow gas
conversion instructions could result in property damage, serious injury, or death.
The gas valve and blower will not support the weight of gas piping. Do not attempt to support the weight of piping
with the boiler or its accessories. Failure to follow this warning could result in gas leakage, substantial property
damage, severe personal injury, or death.
The gas connection on the boiler
is 3/4” for the
EL-
80/110/150 and 1” for the EL-220/299/399. It
is mandatory that this fitting is used for
connection to a field fabricated drip leg as shown
in the illustration above per the National Fuel
Gas Code. You must ensure that the entire gas
line to the connection at the boiler is no smaller
than the unit supplied connection.
Once all inspections have been performed, the
piping must be leak tested. If the leak test
requirement is a higher test pressure than the
maximum inlet pressure, you must isolate the
boiler from the gas line. In order to do this, shut
the gas off using factory and field-installed gas
cocks. This will prevent high pressure. Failure to do so may damage the gas valve. In the event the gas valve is
exposed to a pressure greater than ½ PSI, 14" w.c., or 3.5 kPa, the gas valve must be replaced. Never use an
open flame (match, lighter, etc.) to check gas connections.
B. GAS PIPING
1. Run the gas supply line in accordance with all applicable codes.
Figure 22
Table 13
– Gas Pipe Sizing / BTU’s per Hour
Содержание EL-110
Страница 15: ...15 Figure 3 ...
Страница 61: ...61 Figure 29 ...
Страница 62: ...62 Figure 30 ...
Страница 87: ...87 Figure 33 ...
Страница 88: ...88 Figure 34 ...
Страница 89: ...89 Figure 35 LP 293 A NOTE Parts listed on the following page ...
Страница 94: ...94 ...
Страница 95: ...95 ...
Страница 96: ...96 MAINTENANCE NOTES ...