Nu-Way NOL Modulating, Handbook, Page: 11 / 32

Page 11
Models NOL/NOR Modulating Revision 101199B
BBBBB
URNER URNER
URNER URNER URNER
O O
O O O
IL IL
IL IL IL
S S
S S S
YSTEM YSTEM
YSTEM YSTEM YSTEM
Hyd Ret’n Feed
Fluidics Atomiser Burnerlance
Inner Manifold
Outer Manifold
Oil Pressure Gauge
Spill Valve
Filter
Oil
Pump
Oil Preheater
(Residual Fuel
Only)
Hot Oil
Filter
Thermometer
Pressure Relief Valve
Non Return Valve
NO/NC = Normally Open/Closed
Oil Solenoid Valve
Manual Shut Off Valve
Air Seperator
Bottle
NO
NC
All inter-connecting pipework to be mini-
mum 19mm bore and pressure rated for
42kg/cm
2
(600 psi).
On Residual fuel burners this pipework must
be maintained at the burner atomising tem-
perature and In the case of Class ‘F’ and ‘G’
fuels, must also be traced.
Distillate oil burners require a pump inlet
pressure of 0.35 to 0.70 kg/cm
2
(5 to 10 psi).
For Residual fuel, the oil inlet temperature
must be maintained as recommended in the
table on page 10, and the pump inlet pres-
sure set between 4&5 bar.
If a shut off valve is fitted in the inlet line, a
pressure relief valve set at 0.7 kg/cm 2 (10 psi)
above the supply pressure must be fitted
to prevent damage should the valve be left
shut during burner/heater start-up.
Pumped Systems - All Burners
Pumped Supply From Ringmain. Minimum Bore
25mm Class D / 50mm Class E, F & G
Not Supplied By Nu-way
Pipework Shown In Chain Dot Not Supplied
By Nu-way. (Not Required On Compact
Burner Arrangement)
Flex Oil
Pipes
NO
Return
T’stat
Notes.
The Oil Preheater, Return Oil Thermo-
stat and Spill Valve NO bypass Solenoid
Valve are not fitted on Distillate fuel
systems.