NOL 18-100 HL
Page 6
F
EATURES
Developed from Worldwide field experience, the
NOL series sets standards in efficient and reliable
operation. The burners, which are designed to
meet the requirements of all International markets,
are designed for flange mounting to the appliance
front plate and are delivered ready to install with
a pre-wired packaged control system.
Air Regulation
Air for combustion at high and low firing rates can
be adjusted to give maximum efficiency.
Controls and Safety Systems
Flame supervision is by photocell with a sequence
controller for automatic start-up, running, and
shutdown of the burner.
Fuels
As supplied NOL burners are suitable for light
distillate oil class D (1.5-5.5 cSt @ 40°C) with a
gross CV of 45.5 MJ/kg (12.6 kW/kg).
Burners can be supplied, on request, for use with
Kerosene Class C2 (1.0-2.0 cSt @ 40°C) with a gross
CV 12.9kW/kg.
Fuel System
Suitable for single pipe gravity or two pipe suction
lift systems. The filter supplied with the burner is
of the disposable element type.
Construction
Of monobloc design using fasteners to ISO
standards and designed for flange mounting.
Manual Operation
The burner is normally fitted with a low flame
terminal link switch to assist commissioning.
Combustion Head
The burner head assembly is of a high quality
which ensures delivery of good combustion
performance which can be maintained over
extended periods of operation, leading to optimal
appliance thermal efficiency and reduced running
costs.
This high specification ensures low level emission
of pollutants and excellent flame stability.
S
ITE
C
ONDITIONS
AND
S
ERVICES
Fuel Storage and Handling
The requirements of BS2869 will ensure that the
fuel is suitable. Under sustained cold and exposed
conditions, fuel should be stored and supplied to
the burner at a minimum temperature of 5°C (41°F).
Fuel Supply
The oil line should consist of metallic tube (NEVER
galvanised steel). The final connection to the pump
inlet port is made with a flexible pipe supplied with
the burner. Joints should be made with compression
fittings.
When gravity feed is used, the maximum head
should not exceed 4m (35 kPa).
On installations where the fuel tank is situated
below the level of the burner the maximum suction
permitted is 0.4bar (5.8psi) and a two-pipe (supply
and return) fuel supply system MUST be used.
Single Pipe system
On a single pipe (gravity feed) system, the pump
should be primed under gravity from the tank and
not by running the pump mechanically. To prime
the pump remove the pressure gauge plug, connect
the pressure gauge port to a suitable container.
Two-Pipe System
The suction line will require priming before
energising the pump mechanically. It is essential
to ensure that the return pipe is not obstructed in
any way. Any obstructions will damage the pump.
The fuel supply line may need priming if the oil
storage is allowed to drain completely.
Summary of Contents for NOL100-38
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