baltur GI Series Instruction page 25

ELECTRICAL CONNECTIONS
The three-phase or single-phase power supply line of
the minimum suitable size for the power absorbed by
the burner must be provided with fuse switch. In addi-
tion, according to the Standards, a switch on the burner
supply line is required, arranged outside the boiler room
in an easily reachable position.
All electrical lines must be protected with a flexible
sheath, be firmly fixed and pass far from high-tem-
perature elements. See the diagrams for the electrical
connections (line and thermostats).
GAS FEED SYSTEM AT LOW PRESSURE
(max - 400 mm.W.C.)
In addition. the following should be installed: a cut-off
cock, a gas filter, a pressure stabilizer or a pressure
regulator (when the feed pressure is superior to 400
mm.W.C. = 0.04 kg/cm ), and an antivibration Joint.
2
These parts should be installed as described in
our drawing.
We consider it useful to give the following practical
tips for installing the essential accessories on the gas
pipeline near to the burner:
DIAGRAM OF CONNECTING MORE THAN ONE BURNER TO THE GAS PIPE NETWORK AT
AVERAGE PRESSURE
1) To avoid big drops in pressure on ignition the length
of the pipeline between the point where the stabilizer
or reducer is fitted and the burner should be from
1,5 to 2 m. This pipe must have a diameter equal or
superior to that of the burner attachment fitting.
2) To get the best performance out of the pressure
stabilizer, it is advisable to fit it onto horizontal pipes
after the filter. The gas pressure regulator must be
adjusted while it is working at the maximum capacity
actually displayed by the burner. The output pressure
must be adjusted to a value slightly lower than the
maximum possible value (that obtained by turning
the adjusting screws almost up to the limit). In this
specific case, tightening the adjusting screws will
increase the pressure at the regulator outlet, and
slackening them will reduce the pressure.
3) We advise installing a bend directly onto the burner
gas ramp before applying the removable fitting. This
layout makes it possible to open the boiler door if
there is one, after the pipe fitting itself has been
opened.
1 - Measuring and reducing unit
2 - Interception
3 - Filter
4 - Reducer
5 - Meter
6 - Emergency interception (installed outside)
7 - Ball cock
8 - Filter
9 - Final reducer or stabilizer
10- Anti-vibration joint
11- A couple of flane
D = Distance between pressure stabilizer and valve about 1,5 ÷ 2 m
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N° BT 8530/1
REV.: 15/11/1990