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tep 5:
Gas Valve T rain
Selection
Main Gas
Control
Valve
Main
Gas
(from shut-off
valve train)
Pilot
Gas
igures 3.9 and 3.10 illustrate gas valve trains for single and staged
burner systems respectively.
The typical main gas valve train for a staged burner has the same valve
layout as a single burner except each burner has an individual sole-
noid valve to independently shut down each section. A common gas
shut-off valve train can be used.
igure 3.9
Main Burner
Shut-Off Valve
Manual
Butterfly
Valve
Solenoid
Valve
Pilot
Pressure
Regulator
Pilot
Shut-Off
Valve
clipse AH-MA Air Heat Burner v2, Design Guide 160, 8/1/05
ingle- taged Burner Valve Layout
Flexible
Nipple
Flexible
Nipple
Pipe
Union
Adjustable
Gas Cock
OR
Adjustable
Orifice Valve
& Gas Cock
Pipe
Union
Duct Wall
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