Natural Gas Starting Up And Regulation - baltur BTG 3,6 Instrucciones

1) Make sure that the discharge of combustion products
can take place freely (chimney lock-gates should be
open) and that there is water in the boiler.
2) Check the voltage on the mains to which the unit is
to be connected: make sure that it corresponds with
burner requirements and that all electrical
connections made at the installation site are effected
properly as illustrated in our wiring diagram.
3) Open as much as considered necessary, the
combustion air regulator, and open by about one hird
the air passage between the head and the disk by
operating the regulating screw of the flame disk
(diffuser). (See regulation of the combustion head
0002933451).
4) Operate the regulators incorporated in the gas valves
in such a way as to obtain the gas delivery presumed
necessary. (see 0002910300 and 0002910220).
5) Give current to the burner by opening the main switch.
The burners is then turned on and carries out the
pre-ventilation phase. If the air pressure exceeds that value at which the air pressure switch has been
set, the ignition transformer will be connected and, subsequently, the gas valves (safety and operating) will be
inserted. The valves open completely is limited to the position at which the flow regulator incorporated in the
operating valve has been manually regulated. At first ignition, successive "shut downs" could occur, due to the
following reasons:
a- The gas pipeline has not been adequately purged of air and therefore the quantity of gas is not sufficient to
allow for a stable flame.
b- A "shut down" with flame presence could be caused by flame instability in the ionisation zone, due to and
incorrect air/gas ratio. This can be remedied by varying the quantity of air and/or gas delivered, in order to
find the correct ratio. It could also be caused by an incorrect distribution of air/gas in the combustion head.
This can be corrected by operating the regulation device of the combustion head by closing or opening more
the air passage between the head and the gas diffuser.
c- It could happen that the ionisation current is help up by the current discharged from the ignition transformer
(the two currents have to run the same course on the burner's "earth") and so the burner goes to "shut down"
due to insufficient ionisation. This can be remedied by inverting the input (230V side) of the ignition transformer
(change the places of the two wire that take voltage to the transformer). A shut down with flame presence
could also be caused by the burner's casing not being properly "grounded". We must point out that the
minimum value of the ionisation current to ensure the working of the control box is shown in the electrical
diagram.
6) With the burner on, adapt delivery to that desired, by reading the meter. This output can be modified by operating
the special regulator incorporated in the valve (see the following pages for a desciption of how to regulate the
valves).
7) Control that combustion occurs correctly by using the appropriate instruments (CO
gas -CO max. = 0.1%).
8) After regulation, turn the burner off and on again several times to check that ignition occurs correctly.
9) When the has started up it is necessary to check as previously shown, the gas delivery and the combustion with
the appropriate instruments. When the results are known, necessary, proceed with varying the gas delivery
and relative combustion air in order to adapt delivery to that required for the specific case (boiler potentiality).
It's also necessary to check if the CO
and CO = 0.1%).
10) Control the efficiency of the safety devices: the "shut down" (by detaching the ionisation electrode cable), the
air pressure switch, the gas pressure switch, the gas pressure switch and the thermostats).
N.B. The pressure switch is self-controlled and trefore it must close the contact, which is foreseen to be closed
at rest, (fan stops and consequently there is an absence of air pressure in the burner); if it does not, the
control box will not be inserted (the burner remains at as standstill). It must be specified that if the contact
is not closed during working, the control box will carry out its cycle, but the ignition transformer will not be
inserted and the gas valves will not open. Consequently, the burner will go to shut down. Check that the air
pressure switch functions properly with burner operating, increase the regulating value until it reaches
intervention point and the burner should go to shut down. To ublock the burner, press the special pushbutton
and return the pressure switch regulator to a sufficient value in order to measure the air pressure existing
during the pre-ventilation phase.

NATURAL GAS STARTING UP AND REGULATION

(for LPG operation see the relative chapter)
and CO values are adequate (CO
2
1) Adjustable screw for
air damper opening
2) Reference index for
air damper opening
max. = about 10% for methane gas
2
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ENGLISH
3) Closed damper: reference
index in position "0"
4) Completely open damper:
reference index in posiion "9"
= about 10% for methane
2