Utica Boilers SSV 安装指导

20

92,000

190,000

350,000

625,000

40

63,000

130,000

245,000

445,000

60

50,000

105,000

195,000

365,000

20

131,000

216,000

189,000

393,000

40

90,000

145,000

129,000

267,000

60

72,000

121,000

103,000

217,000

• 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 - Individual 

or organization adopting and enforcing codes, rules, 

and by-laws governing various concerns of community. 

Commonly referred to as "final 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 final 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 - Materials made of or 

surfaced with wood, compressed paper, plant fibers, 

or other materials capable of being ignited and 

burned. Such material shall be considered combustible 

even though flame-proofed, fire-retardant treated, or 

plastered.

• CONDENSATE - Liquid separated from flue gas due to 

reduction in temperature.

• DIRECT VENT BOILER - Boiler constructed and installed 

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 flow 

through a chimney, vent, flue or appliance.

• FLA - Full load amps.

• FLUE  GASES -  Products of combustion plus excess air 

in appliance flues or heat exchanger.

• HIGH-VOLTAGE - Circuit involving potential of not 

more 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 - Operation performed on gas piping 

system to verify system does not leak.

• LOW WATER CUTOFF - Device constructed to 

automatically cut off fuel supply when surface of water in 

boiler falls to lowest safe water level. 

• LOW-VOLTAGE - Circuit involving potential of not more 

than 30 volts.

MBH

=

127,116 x       cu meters
               Seconds

For example: Gas Meter measures 0.1 cubic Meters in 100  

                    seconds

MBH

=

127,116 x 0.1

 = 127 MBH

100

• PRESSURE TEST - Operation performed to verify gas 

tight integrity of gas piping following its installation or       

modification.

• PURGE - To free gas conduit of air or gas, or mixture of 

gas and air. 

• PURGE TIME - Period of time intended to allow for 

dissipation of any unburned gas or residual products of 

combustion.