32
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 suf
fi
cient
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
lique
fi
ed petroleum gas.
• Provide sediment trap up stream of gas valve.
• Install manual main shutoff valve outside of jacket. See
fi
gure 7-2.
7.2 Conversion Kit Instructions
• See Gas Conversion Kit Instructions included with Boiler.
Table 10 -
Gas Supply Pressure
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
fi
re
department.
!
!
Gas Supply Pressure
MODEL
Natural Gas
Propane
Min.
Max.
Min.
Max.
050
3.0" w.c.
(0.7 kPa)
13.5" w.c.
(3.3 kPa)
5.0" w.c.
(1.2 kPa)
13.5" w.c.
(3.4 kPa)
075
100
150
200
299
FIGURE 7-1 Gas Connection
Note:
See Glossary - Piping Table 16
NOTICE
Use two (2) wrenches when tightening and
fi
tting
to pipe boiler's threaded
fi
ttings. Boiler's internal
piping can be damaged if subjected to excessive
torque.
Gas Connection
7 - GAS SUPPLY PIPING
Содержание DKVLT-050
Страница 47: ...47 13 TROUBLE SHOOTING ...
Страница 51: ...51 13 TROUBLE SHOOTING ...
Страница 53: ...53 13 TROUBLE SHOOTING ...
Страница 62: ...62 Supply Water Temperature Sensor Resistance Chart 13 TROUBLE SHOOTING ...
Страница 64: ...64 14 WIRING DIAGRAM 14 1 Connection Diagram 050 075 100 150 200 MBH ...
Страница 66: ...66 14 WIRING DIAGRAM 14 3 Connection Diagram 299 MBH EXTERNAL PUMP RELAY LIMIT OF 1 AMP PER PUMP SEE SECTION 8 ...
Страница 83: ...83 NOTES ...
Страница 84: ...ECR International Inc 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...