Elite EL-110 LP, Installation Manual

Page: 38 / 88

37
Boiler Manual
PART 7: GAS PIPING
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.
The gas connection on the Elite Heating 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 Elite
Heating Boiler
®
is no smaller than the unit sup-
plied connection. Once all the inspections have
n
WARNING
Failure to follow all precautions in this section
could result in fire, explosion or death!
n
WARNING
It is very important that you are connected to
the type of gas as noted on the rating plate.
“LP” for liquefied petroleum, propane gas or,
“Nat” natural or city gas. You must not do a gas
conversion on this boiler without an approved
gas conversion kit. All gas connections must be
approved by the local gas supplier, or utility in
addition to the governing authority, prior to
turning the gas supply on.
UNION
GAS SUPPLY
MANUAL SHUT OFF
(FIELD SUPPLIED)
DRIP LEG
PIPING SUPPORT
been performed, the piping must be leak tested.
If the leak test requirement is a higher test pres-
sure than the maximum inlet pressure, you must
isolate the Elite Heating Boiler
®
from the gas
line. In order to do this, you must 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. (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.
2. Locate and install manual shutoff valves in ac-
cordance with state and local requirements.
3. In Canada, the Manual Shutoff must be
identified by the installing contractor.
4. It is important to support gas piping as the
unit is not designed to structurally support
large amount of weight.
5. Purge all gas lines thoroughly to avoid start
up issues with air in the lines.
6. Sealing compound must be approved for gas
connections. Care must be taken when
applying compound to prevent blockage or
obstruction of gas flow which my effect the
operation of the unit.
Nominal
Iron Pipe Internal
Length of Pipe (Feet)
Size Diameter
(inches) (inches) 10 20 30 40 50 60 70
3/4 .824 278 190 152 130 115 105 96 BTU'S
1 1.049 520 350 285 245 215 195 180 PER
1 1/4 1.380 1,050 730 590 500 440 400 370 HOUR
1 1/2 1.610 1,600 1,100 890 760 670 610 560
}
x1,000
80 90 100 125 150 175 200
3/4 .824 90 84 79 72 64 59 55 BTU'S
1 1.049 170 160 150 130 120 110 100 PER
1 1/4 1.380 350 320 305 275 250 225 210 HOUR
1 1/2 1.610 530 490 460 410 380 350 320
}
x1,000