INSTALLATION INSTRUCTIONS
28
4.5 Starting up the boiler
Once the system has been filled, proceed as follows:
•
Check that the exhaust duct is free from
obstructions and correctly connected to the
flue exhaust system;
•
switch on the power supply to the boiler.
•
The ignition system will automatically
activate the ’System purging’ function
and the display will show the “F33”
function code. (This function will take 5
minutes at the first start-up).
When the
“F33” function is active, the pump circulates
but the burner will not start for 5 minutes.
The normal operation and starting of the
boiler is enabled only once the purging cycle has
been completed.
NB.: The 5 minutes purging cycle is set just at the
frist boiler start-up. Afterwards, every time the
water pressure is restored, the boiler will
automatically start a short ‘system purging’ cycle
of 2 minutes duration. During this cycle the
display will show the “F33” function code. ay. The
normal operation and starting of the boiler is
enabled only once the purging cycle has been
completed.
•
Open the gas feed valve;
•
Use button
to select the WINTER mode.
The symbol
will light up (fixed light) to
indicate the selected operation mode.
•
The automatic ignition system will then light the
burner.
•
In case of flame failure, the ignition system
repeats the ignition procedure after the fan-
overrun cycle (20 sec). It may be necessary to
repeat the operation in order to remove all the air
from the pipes. To repeat the operation, wait
approximately 5 seconds from the last ignition
attempt before resetting the error code
E01
(pressing the reset button
‘
’).
4.6 CO
2
Value adjustment
•
Unscrew the aluminium plug and insert the gas
analyser in the exhaust test point
PF
(fig. 1) to
check the CO
2
value. Make sure that the value
complies with that stated in Table n° 1;
•
If the CO
2
value does not correspond to that
stated, adjust screw
V
(see fig. 1) on the venturi
manifold clockwise to reduce the CO
2
value or
counter-clockwise to increase it
.
Use a 4mm
Allen Wrench for this adjustment.
Table n°1
Gas type
CO
2
%
G 20
9.18
G 30
10.3
G 31
10.3
V
V
PF
Fig. 1
Summary of Contents for RKA 34
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