PART II: INSTALLATION
18
Gas Filter (if provided)
The gas filters remove the dust particles that are present in the gas, and prevent the elements at risk (e.g.: burner valves, counters and
regulators) from becoming rapidly blocked. The filter is normally installed upstream from all the control and on-off devices.
Once the train is installed, connect electrically all its elements: gas valves group and pressure switches.
Pilot burner
The burner is equipped with an electrically ignited gas pilot which can be operated with either natural or liquid petroleum gas.
It is composed by a net diffuser, an electrode for ignition, an isolator, one or two electromagnetic valves and a pressure governor. Pilots
utilise also a raw gas tube that induces raw fuel into the pilot flame that greatly increases its size for ease of main flame ignition.
The pilot provides sufficient flame to instantly, reliably ignite the main burner fuel, providing that pressure has to be regulated in
order to have a good flame; it means that:
pressure has not to drop too much for not loosing the flame
pressure has not to increase too much for avoiding flame breaking.
The additional pipe T increases the flame length and facilitates the ignition
The pilot gas train is already installed to the burner, the following connections must be executed:
connection from the filter with stabiliser to the gas supply network
connection between pilot valves and the main gas train, by means of the pipe provided with the burner.
ATTENTION: it is reccomended to install the filter with gas flow parallel to the floor in order to prevent dust fall on
the safety valve during maintenance operation.
ATTENTION:
once the gas train is mounted according to the diagram on Fig. 4, the gas proving test mus be performed,
according to the procedure set by the laws in force.
ATTENTION: it is recommended to mount filter and gas valves to avoid that extraneous material drops inside the
valves, during maintenance and cleaning operation of the filters (both the filters outside the valves group and
the ones built-in the gas valves).
T
Summary of Contents for URB40
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