Eclipse Furnnox 210 Series Installation Manual page 20

Symbol Appearance
iii
Name
Hermetic Booster
Automatic Butterfly Valve
Manual Butterfly Valve
Adjustable Limiting
Orifice
Pressure Switch
Pressure Gauge
Check Valve
Strainer
Flexible Connector
Heat Exchanger
Pressure Taps
Remarks
Booster is used to increase gas pressure.
Automatic butterfly valves are typically used
to set the output of the system.
Manual butterfly valve are used to balance
the air or gas flow at each burner.
Adjustable limiting orifices are used for fine
adjustment of gas flow.
A switch activated by rise or fall in pressure.
A manual reset version requires pushing a
button to transfer the contacts when the
pressure set point is satisfied.
A device to indicate pressure.
A check valve permits flow only in one
direction and is used to prevent back flow of
gas.
A strainer traps sediment to prevent blockage
of sensitive components downstream.
Flexible connectors isolate components from
vibration, mechanical, and thermal stresses.
Heat exchangers transfer heat from one
medium to another.
Pressure taps measure static pressure.
Bulletin/
Info Guide
620
720
720
728/730
840
940
780
500