Webster JB Series Installation, Startup, Operation And Maintenance Manual page 22

2. Air Atomized Oil Systems
Ball Valve
(man. set to adjust air
volume & high fire air
pressure)
Oil
Metering
Valve
Low Oil
Pressure
Air Filter
Ball Valve
(man. set to adjust
air volume & high
fire air pressure)
Pressure
Gauge
1
High Oil
Temp. Sw.
Thermometer
1
High Oil
Temp. Sw.
Electric oil heater w/integral low
oil temp. switch
"MA" or "MS" - Modulating House Air or Steam
125 PSIG
Max.
Atomizing
Steam
Steam
Trap
Condensate
Return
JB Manual
Safety
Air Filter Valve
Air
Chamber
Compressor
Pressure
Gauge
N.C.
Main Oil
Valve
Gauge Ball or
Gate
Valve
Relief Valve
Air
Chamber
Air pipe same as
discharge open-
ing in air chamber
Compressor
Oil
N.C. Main
Metering
Oil Valve
Valve
N.O. Return
Oil Valve
1
Low Oil
Temp. Sw.
Ball
Valve
Plug
Opening
Relief
Gauge
Valve
Back
Ball or
Pressure
1
Gate Valve
Valve
Low Oil
3 valve bypass optional for
Temp. Sw.
back pressure valve.
Note: For a single burner
with the pump set close to
the burner the back pressure
valve can be furnished piped
with the oil pump set.
Drain
300 lb.
Gauge
Steam
Syphon
Ball or Gate
Valve Steam
Strainer
Ball or Gate
Valve
Drip Leg
Field Piped
"MA" - Modulating #2 Oil
Low
Air pipe same size
as discharge open-
Atomizing
ing in air chamber
Pressure
(field Piped)
Check
Valve
Safety
Oil
Ball
Valve
Valve
Relief
Valve
Gauge
Oil Pump
"MA" - Modulating #4 - 6 Oil
Low Air
Press Sw
Check
(field piped)
Valve
Ball
Safety
Valve
Oil Valve
Oil Supply for 1/4" Ball
Preheat Housing Valve
Ball or
Gate Valve
Oil
Supply Relief
Heating
Valve Gauge
Check
System
Valve
Ball or
Gate Valve
Pressure
Reducing
Valve
Metering Lever
Ball Valve Linked
to Mod. Motor
NOTE: House air does not use steam Syphon or Steam Trap
Page 22
Gauge
Oil
Flexible Metal Hoses or
Gauge
Copper Tubing
Check
Valve
Compound
Gauge
Check
Valve
Strainer
Field Piped
Field Piped
Air
Gauge
Oil
Oil Preheat Housing
Gauge
Flexible Metal Hoses
or Copper Tubing
Oil Return from
Preheat Housing
1/4" Ball
Valve
Check
Valve
Compound
Gauge
Check
Valve
Strainer
Oil Pump
Field Piped
Low Atomizing
Pressure Switch
N.C
Atomizing
Valve
Steam
Syphon
Nozzle
Return
to Tank
Gate
Valve
Oil
Suction
Nozzle
Return
to Tank
Gate
Valve
Oil
Suction
Gauge
Check
Valve
Steam
Syphon
Fuel Systems