Table of Contents
Advertisement
722005
Field Piped
Pilot Manual
Ball Valve
Manual Ball
Valve
Gas
Supply
UL Modulation Gas Piping Diagram - 5,001 to 12,500 MBH Firing Rate
722011
Field Piped
Pilot Manual
Ball Valve
Manual Ball
Valve
Gas
Supply
FM Modulation Gas Piping Diagram - 5,001 to 12,500 MBH Firing Rate
Figures 722003, 04, 05, 10 & 11 show the common gas
trains arrangements used on the JBE(X) burner line.
There may be other local or job site requirements that
can alter the components in addition to those outlined in
this summary.
All gas and oil systems for the JBE(X) burner are full
modulating. The two gas safety shutoff valves are either
motorized or solenoid type and are controlled by the
flame safeguard to provide safe control of the fuel flow.
JBE(X) Manual
Pilot Gas
Pressure
Pilot Solenoid
Regulator
Valve
Vent To Outside
Atmosphere
Man Reset Low
Gas Pressure
Switch
S
L
Gas Pressure
Manual Test
Regulator
Main Solenoid
Gas Valve
Pilot Gas
Pilot Solenoid
Pressure
Valve
Regulator
Man Reset Low
Vent To Outside
Gas Pressure
Atmosphere
Switch
Main Motorized
Gas Valve
14 Sec.
M
L
Gas Pressure
Manual Test
Regulator
S
Main Motorized
Man Reset High
Vent
Gas Valve
Gas Pressure
Switch
W/POC
26 Sec.
Manual
M
H
Ball Valve
POC
Field Piped
Manual
Test Valve
Valve
S
Vent
Main Motorized
Man Reset
Gas Valve
High Pressure
W/ POC
Switch
26 Sec.
M
H
POC
Manual Ball Valve
Manual Test
Valve
Valve
Field Piped
The gas control valve is a butterfly valve used to control
the flow of gas from the low fire to the high fire input. The
butterfly valve is driven by a fuel cam (linkage system) or
a direct coupled actuator. There are different types of gas
control valves used, which may use mechanical low fire
stops and/or may be internally ported as a smaller size.
High turndown burners will require smaller control valves
with higher pressure drops to provide adequate control at
low fire.
Page 29
Gas Pilot
Test
Fuel Flow
Connection
Control Valve
Gas Burner
Gas Pilot
Test
Connection
Gas Burner
Fuel Flow
Control Valve
Section D - Fuel and Electrical Systems
Ignitor
Manifold
722005
Ignitor
Manifold
722011
Advertisement
Table of Contents
