Webster JB Series Installation, Startup, Operation And Maintenance Manual page 26

722010
Field Piped
Pilot Manual
Ball Valve
Manual Ball
Valve
Gas
Supply
Gas Pressure
Regulator
FM Modulation Gas Piping Diagram - 2,501 to 5,000 MBH Firing Rate
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
722082
Field Piped
Pilot Manual
Ball Valve
Gas Pressure
Regulator
Manual Ball
Valve
Gas
Supply
UL Modulation Gas Piping Diagram - Over 12,500 MBH Firing Rate
JB Manual
Pilot Gas
Pilot Solenoid
Pressure
Valve
Regulator
S
Man Reset Low
Vent To Outside
Gas Pressure
Atmosphere
Switch
Main Mortorized
Gas Valve
14 Sec.
M
L
Manual Test
Manual Test
Valve
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
Pilot Gas
Pilot Solenoid
Pressure
Valve
Regulator
Vent To Outside
Normally Open
Atmosphere
Vent Valve
Main Solenoid
Gas Valve
S
L
Manual
Man Reset Low Gas
Test Valve
Pressure Switch
Vent
Man Reset
Main Motorized
High Pressure
Gas Valve
Switch
26 Sec.
M
H
Manual Ball Valve
Valve
Field Piped
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
S
Vent
Man Reset High
Vent
Main Motorized
Gas Pressure
Gas Valve
Switch
W/POC
14 sec.
Manual Ball
M
S
Valve
H
POC
Manual Test
Field Piped
Valve
Page 26
Gas Pilot
Test
Connection
Gas Burner
Fuel Flow
Control Valve
Test
Fuel Flow Connection
Control Valve
Test
Connection
Fuel Flow
Control Valve
Test
Fuel Flow
Connection
Control
Valve
Ignitor
Manifold
722010
Gas Pilot
Ignitor
Gas Burner
Manifold
722005
Gas Pilot
Ignitor
Gas Burner
Manifold
722011
Gas Pilot
Ignitor
Gas Burner
Manifold
722082
Fuel Systems