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Eclipse RatioMatic RM Series Guía de instalación Pagina 19

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Eclipse RatioMatic v3.10 - Design Guide No. 110, 12/01
19
RatioMatic
Main Gas Shutoff
Valve Train
Gas Cock
Solenoid Valve
(normally closed)
Fuel Orifice Meter
Adjustable Limiting
Orifice
Pressure Regulator
Eclipse Combustion, Inc.
strongly endorses NFPA as a
minimum
Gas cocks are used to
manually shut off the gas
supply on both sides of the
main gas shut-off valve train.
Solenoid valves are used to
automatically shut off the gas
supply on a bypass gas system
or on small capacity burners.
Fuel orifice meters are used to
measure gas flow.
Adjustable limiting orifices are
used for fine adjustment of gas
flow.
NC
KEY TO SYSTEM
SCHEMATICS
These are the symbols used in the schematics.
756
710
760
910
684
742
Symbol Appearance Name Remarks Bulletin/
Info Guide
A ratio regulator is used to control
the air/gas ratio. The ratio
regulator is a sealed unit that
adjusts the gas flow in ratio with
the air flow. To do this, it measures
the air pressure with a pressure
sensing line, the impulse line. This
impulse line is connected between
the top of the ratio regulator and
the burner body.
A pressure regulator reduces
gas pressure to a stable, usable
pressure.
Ratio Regulator
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