Fondital NIAS BTN 28, Инструкция по установке, эксплуатации и обслуживанию

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3.8 Adjusting boiler output to the system
Connect a manometer for burner pressure as
shown in pic. 28 (PROCEED ONLY IF BOILER
IS COLD), select winter (CH and DHW) function,
turn the boiler on and follow the instructions
below:
- wait approx. 120 seconds for boiler to reach
working pressure;
- check pressure and verify boiler power
adequacy according to heating system
requirements;
- should boiler power not be adequate, adjust P1
on modulation board (clockwise to increase gas
pressure, anti-clockwise to decrease gas
pressure)
Please note that the boiler has an automatic
modulation function enabling it to self adapt to
the heating system requirements.
P1 adjusts max gas pressure to the burner and
consequently the boiler heat output.
Burner gas pressure / boiler heat output chart
(pic. 30)
Assuming the heating system requirement is 18
kW, pic. 30 chart indicates burner gas pressures
to ensure proper boiler output:
Sample 1 - natural gas-powered boiler: adjust P1
to 7.5 mbar on 24 TN - balanced flue - version
and 7.7 mbar on 24 TFS - forced draught -
version.
Sample 2 – butane-powered boiler: adjust P1 to
14.8 mbar on 24 TN - balanced flue - version
boiler and 15.2 mbar on 24 TFS - forced draught
- version.
Sample 3 – propane-powered boiler: adjust P1 to
19 mbar on 24 TN - balanced flue -version and
20 mbar on 24 TFS - forced draught - version.
pic. 29
pic. 30
BURNER GAS PRESSURE / BOILER HEAT OUTPUT CHART
Bu
rn
e
r p
ressu
re
(m
b
a
r)
Bu
rn
e
r pressu
re
(m
ba
r)
Bu
rne
r pressu
re
(m
ba
r)
Burne
r pressure
(mba
r)
PROPANE
BUTANE
NAT. GAS
PROPANE
BUTANE
NAT. GAS
PROPANE
BUTANE
NAT. GAS
PROPANE
BUTANE
NAT. GAS
Output (kW)
Output (kW)
Output (kW)
Output (kW)