UTICA BOILERS MAHF-75 Installation, Operation And Maintenance Manual page 75

• APPLIANCE - Device t o convert gas int o energy;
t erm includes any com ponent , cont rol, wiring, piping
or t ubing required t o be part of t he device.
• ANSI - Am erican Nat ional St andards I nst it ut e, I nc.
over see's creat ion and m aint enance of volunt ary
consensus st andards, including ANSI Z21.13/ CSA 4.9:
Gas- Fired Low Pressure St eam and Hot Wat er Boilers.
• ASME - Associa t ion of M e ch a n ica l En gin e e r s
Est ablishes rules of safet y governing t he design,
fabricat ion, and inspect ion of boilers and pressure
vessels, det erm ining t he MAWP of such vessels.
• ASTM - Am erican Societ y for Test ing and Mat erials.
ASTM I nt ernat ional is one of largest volunt ary
st andards developm ent organizat ions in world t rust ed
source for t echnical st andards for m at erials, product s,
syst em s, and services. Known for t heir high t echnical
qualit y and m arket relevancy, ASTM I nt ernat ional
st andards have im port ant role in inform at ion
infrast ruct ure t hat guides design, m anufact uring and
t rade in t he global econom y.
• AUTHORITY HAVING JURISDICTION - I ndiv idual
or or ganizat ion adopt ing and enforcing codes,
rules, and by- laws governing various concerns of
community. Commonly referred to as "final authority"
for any m at t ers relat ing t o LI FE SAFETY and BUI LDI NG
CONSTRUCTI ON wit hin a com m unit y.
• BOILER - Appliance int ended t o supply hot liquid for
space- heat ing, processing or power purposes.
• BTU - Abbreviat ion for Brit ish Therm al Unit . Quant it y
of heat required t o raise t em perat ure of 1 pound of
wat er 1° F.
• BURNER - Device for final conveyance of gas or
m ixt ure of gas and air, t o com bust ion zone.
• CALIBRATE - Make fine adjustments or divide into
m arked int ervals for opt im al m easuring.
• COAXIAL VENTING Sharing t he sam e cent er.
• COMBUSTION - Rapid oxidat ion of fuel gases
accom panied by production of heat or heat and light.
Complete combust ion of fuel is possible only in
presence of adequat e supply of Oxygen.
• COMBUSTIBLE MATERIAL - Mat erials m ade of or
surfaced with wood, compressed paper, plant fibers,
or ot her m at er ials capable of being ignit ed and
bur ned. Such m at erial shall be considered com bust ible
even though flame-proofed, fire-retardant treated, or
plast ered.
• COMBUSTION AIR - Air t hat is drawn int o an
appliance t o m ix wit h fuel and support com bust ion.
1 4 - GLOSSARY
• CONDENSATE - Liquid separated from flue gas due to
reduct ion in t em perat ure.
• DIRECT VENT BOILER - Boiler const ruct ed and
inst alled so all com bust ion air is derived direct ly
from out doors and all vent gases are discharged t o
out doors.
• DOMESTIC - Relat ing t o household usage as opposed
t o com m ercial usage.
• DOMESTIC WATER - Pot able drinking wat er - t ap
wat er.
• DRAFT - Pressure difference causes gases or air to
flow through a chimney, vent, flue or appliance.
• FLA - Full load am ps.
• FLUE - Enclosed passageway for conveying
com bust ion gases.
• FLUE GASES - Product s of com bust ion plus excess
air in appliance flues or heat exchanger.
• GAS SUPPLIER - Part y t hat sells com m odit y of
Nat ural Gas ( Gas A) or LPG ( Gas E) .
• HIGH-VOLTAGE - Circuit involving pot ent ial of not
m ore t han 600 volt s and having circuit charact erist ics
in excess of t hose of low- volt age circuit .
• HYSTERESIS (DIFFERENTIAL) -difference
bet ween t he t em perat ure at which t he t herm ost at
switches off - and the temperature at which it
swit ches on again.
• IGNITER - Device ut ilizing elect rical energy t o ignit e
gas at m ain burner.
• LEAK CHECK - Operat ion perform ed on gas piping
syst em t o verify syst em does not leak.
• LICENSED QUALIFIED INSTALLER / SERVICE
TECHNICIAN - any individual, firm, corporation
or com pany t hat eit her direct ly or t hrough a
represent at ive is engaged in t he inst allat ion,
replacem ent , repair or servicing of gas piping, vent ing
syst em s, appliances, com ponent s, accessories, or
equipm ent , and whose represent at ive is experienced
and t rained, in such work and has com plied wit h t he
requirem ent s of t he aut horit y having j urisdict ion.
• LOW WATER CUTOFF - Device const ruct ed t o
automatically cut off fuel supply when surface of water
in boiler falls t o lowest safe wat er level.
• LOW-VOLTAGE - Circuit involving pot ent ial of not
m ore t han 30 volt s.
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