ROBUA G Series, Инструкция по установке, эксплуатации и обслуживанию

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Maintenance
Installation, use and maintenance manual – G gas unit heater
41
7
6.6 SETTING RANGE
Through the chronothermostat it is possible to set the
heat output of the gas unit heater, setting a value (in per-
centage) different from the nominal one.
This option modifies the maximum heat output of the gas
unit heater accordingly and can be implemented when
you want the gas unit heater to have a heat output lower
than the nominal one.
The adjustment of the heat output can only be
carried out by a TAC or by professionally qualified
personnel.
In case of intervention, the parameter to be modi-
fied is PM 05 (Table 6.4 p. 35). For any adjustment,
follow the setting instructions given in Paragraph
6.3.10 p. 34.
The following Table 6.8 p. 41 shows, depending on the
model, the values (in percentage) that can be set and
the corresponding heat input (to be reported on the
nameplate).
Example:
For a G100 gas unit heater, if you want to adjust a heat
output of 86,9 kW, you must set (in parameter PM 05) the
value 90.
The value of 100 (%) (default value) corresponds to
the nominal heat output of the gas unit heater; the
value of 0 (%) corresponds to the minimum heat
output of the gas unit heater.
Table 6.8
Blower speed and corresponding heat input
PM 05
G30 G45 G60 G100
(upper modu-
lation depth
limit)
Value to be set
[%]
Combustion
blower speed
[rpm]
Heat input
[kW]
Combustion
blower speed
[rpm]
Heat input
[kW]
Combustion
blower speed
[rpm]
Heat input
[kW]
Combustion
blower speed
[rpm]
Heat input
[kW]
100% 3500 30,0 4850 45,0 5650 58,0 6000 93,0
95% 3420 29,3 4693 43,5 5468 56,1 5803 89,9
90% 3340 28,6 4535 42,1 5285 54,3 5605 86,9
85% 3260 27,9 4378 40,6 5103 52,4 5408 83,8
80% 3180 27,3 4220 39,2 4920 50,5 5210 80,8
75% 3100 26,6 4063 37,7 4738 48,6 5013 77,7
70% 3020 25,9 3905 36,2 4555 46,8 4815 74,6
Once the heat input of the heater has been
changed, it is mandatory to update the nameplate,
showing on it the value of the nominal heat input
at the time of commissioning (EN 1020 and prEN
17082) in indelible letters and in a durable manner.
7 MAINTENANCE
7.1 WARNINGS
Correct maintenance prevents problems, assures
efficiency and keeps running costs low.
Maintenance operations described herein may ex-
clusively be performed by the TAC or skilled main-
tenance technician.
Any operation on internal components may exclu-
sively be performed by the TAC.
Before performing any operation, switch off the
appliance by means of the control device and wait
for the end of the shutdown cycle, then disconnect
power and gas supply, by acting on the electrical
disconnector and gas valve.
The efficiency checks and every other "check and
maintenance operation" (see Table 7.1 p. 42)
must be performed with a frequency according to
current regulations or, if more restrictive, according
to the provisions set forth by the manufacturer, in-
staller or TAC.
Responsibility for efficiency checks, to be carried
out for the aims of restricting energy consumption,
lies with the system manager.