66
– take the combustion data reading
– press the button
y
to exit the "Chimney sweeper Proce-
dure”. The boiler water delivery temperature will appear on
the display
– disconnect the pressure gauge, carefully close the pressure
point (6), test for gas tightness, put the control panel back to
the original position and refit the front panel (2). Now conduct
a flue gas analysis as detailed in APPENDIX 2.
Gas supply pressure
Type of gas
G20
G31
Pressure (mbar)
19
36
NOTE: There are negligeable losses of working gas pressure
attributable to the boiler as the gas cock is connected directly
to the gas valve.
6.8
Domestic hot water comfort function (pre-
heating)
Murelle Revolution 30
models have a "domestic hot water com-
fort" function which ensures the best performance in terms of
domestic hot water, reducing the time necessary for the hot
water to become available and ensuring that the temperature
is stable.
To activate the function:
– select parameter
"PAR 22"
(see "Parameter setting and dis-
value 1
– exit parameter settings and press button
>
for approximately
5 seconds until the symbol
r
appears on the display and be-
gins to flash indicating that the function has been activated.
To deactivate the function:
– press button
>
again for approximately 5 seconds until the
symbols
r
and
R
appear on the display and begin to flash
indicating that the function has been deactivated.
6.9
Gas conversion
Murelle Revolution 30
models can work with G20 or G31 without
the need for any mechanical conversion. Simply select parame-
ter
"PAR 03"
(see "Parameter setting and display" page 60) and
set the type of gas to be used.
If changing the type of gas to be used, carry out the entire ap-
pliance
"COMMISSIONING"
m
CAUTION
Conversion may ONLY be carried out by Professional-
ly Qualified Personnel.
m
CAUTION
If the gas supply is changed from G20 to G31, mark
the box on the TECHNICAL DATA PLATE.
X
G31 - 36 mbar
