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22
PARAMETER
VALUE DESCRIPTION
N° NAME
4 1° safety time 1 ÷ 25 sec
First safety time for ignition of the first gas stage (see table of allowed
times).
6
1st/2nd stage
gas outlet type
Intermittent
The 1st gas stage burner is kept running even after the ignition of the
2nd gas stage, until both are shut down at the same time.This configu-
ration is valid for the single stage versions (ESTRO A2, C2 and Q2), or
for the ESTRO-B version that controls a double stage burner. When
ESTRO-B controls a pilot burner separately from the main burner, check
the applicability of the rules based on the application.
Interrupted
The 1st gas stage burner is switched off after the 2nd gas stage has
been stabilized. Shut down takes place after the “Regulation delay /2nd
safety time” that in this case corresponds to the 2nd safety time. This
configuration is possible only for the ESTRO-B version that controls the
pilot burner separately from the main burner.
Intermittent with
immediate 2°stage
The 1st gas stage burner is kept running even after the ignition of the
2nd gas stage, as in the “intermittent” version: with the difference being
that at the 2nd gas stage burner ignition is performed immediately after
the ignition of the 1st gas stage burner. This configuration is valid for the
ESTRO-B2 version which controls a double gas stage burner where
there must not be any delays between the activation of the two gas sta-
ges.
11
Burner
functioning
mode
Not permanent
(stop every
24 hours)
After 24 hours of continuous operation of the burner, the instrument acti-
vates shut down to perform efficiency test of the flame detection probes
and auto diagnosis. This functioning is useful for not permanent opera-
tion burners detected by UV-2. This configuration avoids installing the
shutter for the UV-2 probe.
Permanent
with detection rod
Every hour of continuous burner operation, the instrument checks the
flame amplifier by disconnecting the flame signal from the detection
electrode. This selection is allowed only with ionization flame detection
via electrode.
Permanent
with UV and shutter
Every hour of continuous burner operation, the instrument checks the
flame amplifier and the UV-2 sensibility probe, by dimming the UV radia-
tion coming into the probe. Dimming occurs via a shutter placed betwe-
en the probe and the burner. This selection is allowed only with flame
UV-2 sensor flame detection.
16
Automatic
ignition
trial
0 The instrument never attempts reignition in lockout conditions.
1 ÷ 9
generic lockout
Maximum number of automatic recycle attempts (including prepurge),
performed by the flame control regardless of the lockout cause. The
attempts are done consecutively and only signal the lockout status to
remote at the end of all the attempts. When this function is enabled, the
instrument conforms only to the EN746-2 Norm.
1 ÷ 5
recycle for “U”
lockout
Maximum number of automatic recycle attempts (including prepurge),
performed by the flame control after failed ignition (U lockout). The
attempts are done also non consecutively and only signal the lockout
status to remote at the end of all the attempts. When this function is
enabled, the instrument conforms only to the EN746-2 Norm.
1 ÷ 5
respark for “U”
lockout
Maximum number of automatic reignition attempts (excluding prepur-
ge), performed by the flame control after failed ignition (U lockout). The
attempts are done also non consecutively and only signal the lockout
status to remote at the end of all the attempts. When this function is
enabled, the instrument conforms only to the EN746-2 Norm.
Locked parameters
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