EXTREMA
23
EN
cod. 3540S060 - 04/2010 (Rev. 00)
fig. 30 - Test Mode
3. The heating power will be displayed 100% - denot-
ed by flashing ‘1’ then ‘00’ continuously on the LCD
display (see fig. 31)
4. The flame symbol will be displayed once the boiler
has lit.
fig. 31
5. N.B. The ECO symbol will only be displayed if boiler is in the ECO mode.
6. Use the
CH keys
to give the required output.
7. To exit the test mode, press the
CH keys
together for 5 seconds, or leave the boiler to automatically switch off
after 15 minutes or stopping DHW drawing.
Check the operational (working) gas inlet pressure
Set up the boiler to operate at maximum rate as de-
scribed in sec. Test mode of cap. 3.3.
With the boiler operating in the maximum rate condi-
tion check that the operational (working) gas pressure
at the inlet gas pressure test point (see fig. 32) com-
plies with the requirements of cap. 4.4.
Ensure that this inlet pressure can be obtained with all
other gas appliances in the property working.
fig. 32
Measure the gas rate
Measure the gas rate and check against following ta-
ble:
III
III
IIII
IIII
III
III
IIII
IIII
III
III
IIII
IIII
III
III
IIII
IIII
Alternates
GAS RATES (NATURAL GAS)
AFTER 10 MINUTES FROM COLD
BOILER MODEL
Maximum rate
Minimum rate
m
3
/h
ft
3
/h
m
3
/h
ft
3
/h
EXTREMA 30 C
3.1
109.48
0.61
21.54
EXTREMA 38 C
3.92
138.43
0.74
26.13
