Burner Weishaupt  Bahan bakar Gas

 Weishaupt gas and dual fuel burners
G, G L and RGL satisfy the requirements
for operational safety, easy
installation, and reliability. They
operate economically and environmentally
friendly. The oil side of
the dual fuel burners comply with
DIN EN 267.
The gas burners and the gas side
of dual fuel burners comply with
DIN-EN 676 and the gas appliance
guidelines (90/396/EEC) and are EG
type tested.
The burners distinguish themselves
through a variety of interesting features.
■ Large capacity and range of
application
■ Automatic sequence of operations
■ Combustion chamber pre-purge
■ Safe flame monitoring
■ Stable fan characteristics – good
combustion results
■ Quiet operation
■ Hinged burner casing
■ Simple installation, adjustment and
servicing as components are easily
accessible

■ Easily converted to other types of gas
■ Fuel change on the dual fuel burner is
carried out by means of a manual or
automatic change over. Conversion
work is not necessary
■ Automatic air closure on burner
shutdown
Construction
All components are assembled in one
unit. The motor is mounted at right angles
to the air flow direction. The fan rotor is
mounted on the motor shaft, which also
drives the fuel pump on dual fuel burners.
All the equipment used for the regulation
of fuel and air is arranged clearly and is
easily accessible. The burners can be
hinged to left or right. This simplifies work
on the combustion head, diffuser, nozzles
and electrodes.
Fuels
Oil part (Fuel oil DIN 51603):
Fuel Oil (EL)
Viscosity up to 6 mm2
/s at 20°C
Gas part (DVGW work sheet G260):
Natural Gas E (previous description: H)
Natural Gas LL (previous description: L)
Liquid Petroleum Gas F
Other gas types and fuels on request.
Application
The burners can be used on heating
appliances such as hot water boilers,
steam boilers, air heaters and for certain
process heating applications. The burners
are used in particular on modern boilers
with high ratings as they can overcome
high combustion chamber pressures.
Regulation
The control of air and fuel takes place
according to fuel, burner size and
requirements.
■ Sliding two stage Z
■ Sliding two stage ZM
■ Three stage (oil side only)
■ Modulating (the standard sliding two
stage ZM burner with a 42 secs.
servomotor can become modulating
by fitting a suitable electronic
controller).
Sliding two stage Z burners are fitted
with a servomotor with an 8 seconds
running time which gives rapid control of
throughput. The air damper and gas
control valve are operated simultaneously
by means of a cam arrangement.
The simultaneous operation of gas and
air ensures that start and change over
impacts in the combustion chamber and
gas system are small.
Sliding two stage ZM and modulating
burners are fitted with a slow acting
servomotor, running time approx. 20 or
42 seconds. The air damper and gas
control valve are operated by means of a
cam arrangement.
With sliding two stage regulation the
partial and full load positions are fixed
within the burner operating range. The
burner moves to one position or the
other, depending on the appliance
demand. There are no rapid changes of
fuel throughput.
Modulating burners operate at any point
within the burner range, depending on
the heat requirement.
Reduced start rate for gas
The burners start with ignition load,
which ensures that only a small quantity
of gas is released into the combustion
chamber. After a time delay, gas is
released for the main flame.
Controlled shutdown at partial load
The regulator and the set point of the
second stage or the modulating control
enable the burner to shut down in the
partial load. This avoids pressure surges
in the gas system on controlled
shutdown.
Flame supervision
The burner control, which is fitted in the
control panel or mounted on the burner,
sequences the operation automatically.
The burner control monitors the flame
and its stability with a flame sensor. On
gas burners the flame sensor works on
the ionisation principal. Dual fuel burners
utilise a UV diode flame sensor.
Magnetic clutches on dual fuel
burners
The coupling between the oil pump and
motor is automatically disconnected
when operating with gas. The pump is
then protected from unnecessary wear
and tear.
Valve trains
According to DIN-EN 676 burners must
be fitted with two solenoid valves.
Weishaupt gas and dual fuel burners are
supplied as standard with two Class A
solenoid valves (double solenoid valve
DMV). Weishaupt also recommend the
use of a valve proving system. According
to DIN-EN 676, valve proving is
compulsory from 1.200 kW. These, as
well as other gas fittings as for example
gas filters and gas pressure regulators
can be found in our accessories list.
Conversion to other gas types
Weishaupt gas and dual fuel burners are
identical in their construction for both
Natural Gas and Liquid Petroleum Gas.
When converting from one gas to
another, only recommissioning is required.
Site of installation
Burners in standard execution (material,
construction and type of protection) are
designed for operation in covered areas
with temperatures of -10° C to +40° C
(details for oil operation in minus
temperatures and installations in the
open, on request).