Glossary - Dunkirk DKVLT-050 Installation, Operation & Maintenance Manual

• ANSI - American National Standards Institute, Inc.
oversees creation and maintenance of voluntary
consensus standards, including ANSI Z21.13/CSA 4.9:
Gas-Fired Low Pressure Steam and Hot Water Boilers.
• ASTM - American Society for Testing and Materials.
ASTM International is one of largest voluntary standards
development organizations in world trusted source for
technical standards for materials, products, systems,
and services. Known for their high technical quality and
market relevancy, ASTM International standards have
important role in information infrastructure that guides
design, manufacturing and trade in the global economy.
• AUTHORITY HAVING JURISDICTION -
organization adopting and enforcing codes, rules, and
by-laws governing various concerns of community.
Commonly referred to as "fi nal authority" for any matters
relating to LIFE SAFETY and BUILDING CONSTRUCTION
within a community.
• Btu - Abbreviation for British Thermal Unit. Quantity of
heat required to raise temperature of 1 pound of water
1°F.
• BURNER - Device for fi nal conveyance of gas or mixture
of gas and air, to combustion zone.
• COMBUSTION - Rapid oxidation of fuel gases accompanied
by production of heat or heat and light. Complete combustion
of fuel is possible only in presence of adequate supply of
Oxygen.
• COMBUSTIBLE MATERIAL
with wood, compressed paper, plant fi bers, or other
materials capable of being ignited and burned. Such
material shall be considered combustible even though
fl ame-proofed, fi re-retardant treated, or plastered.
• CONDENSATE - Liquid separated from fl ue gas due to
reduction in temperature.
• DIRECT VENT BOILER
so all combustion air is derived directly from outdoors
and all vent gases are discharged to outdoors.
• DRAFT - Pressure difference causes gases or air to fl ow
through a chimney, vent, fl ue or appliance.
• FLA - Full load amps.
• FLUE GASES - Products of combustion plus excess air in
appliance fl ues or heat exchanger.
• GAS PIPE SIZES - Table 16
Individual or
- Materials made of or surfaced
- Boiler constructed and installed

15 - GLOSSARY

Length of Pipe
- Ft.
20
40
60
Length of Pipe
- Ft.
20
40
60
• HIGH-VOLTAGE
than 600 volts and having circuit characteristics in excess
of those of low-voltage circuit.
• IGNITER - Device utilizing electrical energy to ignite gas
at main burner.
• LEAK CHECK
to verify system does not leak.
• LOW WATER CUTOFF
cally cut off fuel supply when surface of water in boiler
falls to lowest safe water level.
• LOW-VOLTAGE
than 30 volts.
• METRIC GAS METERS
MBH
For example: Gas Meter measures 0.1 cubic Meters in 100
MBH
• PRESSURE TEST
tight integrity of gas piping following its installation or
modifi cation.
• PURGE - To free gas conduit of air or gas, or mixture of
gas and air.
• PURGE TIME
dissipation of any unburned gas or residual products of
combustion.
55
NATURAL GAS
Pipe Capacity - BTU Per Hour Input Includes Fittings
1/2" 3/4"
92,000 190,000
63,000 130,000
50,000 105,000
PROPANE GAS
Pipe Capacity - BTU Per Hour Input Includes Fittings
Copper Tubing
(Outside Diameter)
5/8" 3/4"
131,000 216,000
90,000 145,000
72,000 121,000
- Circuit involving potential of not more
- Operation performed on gas piping system
- Device constructed to automati-
- Circuit involving potential of not more
127,116 x cu meters
=
Seconds
seconds
127,116 x 0.1
= = 127 MBH
100
- Operation performed to verify gas
- Period of time intended to allow for
1" 1 1/4"
350,000 625,000
245,000 445,000
195,000 365,000
Iron Pipe
1/2" 3/4"
189,000 393,000
129,000 267,000
103,000 217,000