Gas Supply Piping - Dunkirk DKVLT-050 Installation, Operation & Maintenance Manual

FIGURE 7-1 Gas Connection
Use two (2) wrenches when tightening and fitting
Note
to pipe boiler's threaded fittings. Boiler's internal
piping can be damaged if subjected to excessive
torque.

7 - GAS SUPPLY PIPING

Gas Connection
MODEL
050
075
100
150
200
299
!
CAUTION
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire
department.
7.1 General
• Use piping materials and joining methods acceptable
to authority having jurisdiction. In absence of such
requirements:
• USA - National Fuel Gas Code, ANSI Z223.1/NFPA 54
• Canada - Natural Gas and Propane Installation Code,
CAN/CSA B149.1
• Size and install gas piping system to provide sufficient gas
supply to meet maximum input at not less than minimum
supply pressure. See Table 10.
• Support piping with hooks straps, bands, brackets,
hangers, or building structure components to prevent or
dampen excessive vibrations and prevent strain on gas
connection. Boiler will not support piping weight.
• Use thread (joint) compound (pipe dope) suitable for
liquefied petroleum gas.
• Provide sediment trap up stream of gas valve.
• Install manual main shutoff valve outside of jacket. See
figure 7-2.
7.2 Conversion Kit Instructions
• See Gas Conversion Kit Instructions included with Boiler.
Table 10 -
Gas Supply Pressure
Gas Supply Pressure
Natural Gas
Min. Max.
3.0" w.c. 13.5" w.c.
(0.7 kPa) (3.3 kPa)
Note: See Glossary - Piping Table 16
34
Propane
Min. Max.
5.0" w.c. 13.5" w.c.
(1.2 kPa) (3.4 kPa)
P/N 240011326, Rev. B [04/15/2016]