44
COSMOGAS
AGUAPLUS
13 - START-UP
Figure 13-9 - Taking combustion analysis
Figure 13-10 - Gas valve
D - Gas inlet pressure port
E - CO2 regulation screw
F - Factory regulation screw (do not touch).
E
D
F
E
D
F
020010.01.022
13.8 - Checking CO2 level
Figure 13-8 lists the correct CO2 ranges for an appliance
running at normal operating conditions at an altitude below
1000 metres. CO2 values outside of the ranges given in Figure
13-8 may lead to malfunctioning of the appliance and cause
it to prematurely fail. To check the CO2 value, carry out a
combustion analysis follow Section 13.8.1 or 13.8.2.
13.8.1 - Checking CO2 level on units
models 60 and 70
WARNING!!!During this procedure compare also
CO (carbon monoxide) reading, with the value given in
Figure 15-9. If this is higher, STOP the appliance and
call the retailer.
1.- The flue system must contain a purpose provided test point
for the analysis of combustion products. The test point should
be located as close to the appliance as is possible (see
Figure 13-9, part “F”)..
2.- Switch on the appliance and open the bridge between
terminals “10” and “11”;
3.- Make sure that the required temperature is higher than the
appliance temperature;
4.- Access the installer menu (see section 14.9) and set
parameter
2010
to
HIGH.
The appliance will now work
for 20 minutes at maximum power;
5.- Wait two or three minutes for the CO2 to stabilise;
6.- Put the CO2 value reading probe into socket “F” shown in
Figure 13-9;
7.- Compare the CO2 reading with range given in Figure 13-
8, making sure to use the range for the gas type in use.If
the CO2 reading is outside the specified range, it must be
adjusted operating on the “E” screw of Figure 13-10. Use a
2.5mm Allen Wrench to turn the screw (clockwise to reduce
the CO2 level, counter-clockwise to increase the CO2 level)
in small increments and wait for the CO2 to stabilize to
prevent overshooting the desired value;
8.- Once the correct CO2 value as per table 13-8 has been
reached, seal the screw with red paint or a similar system
to discourage tampering.
9.- Set parameter
2010
to
LOu
The appliance will now work
for 20 minutes at minimum output heat.
10.- Wait two or three minutes for the CO2 to stabilise;
11.- Compare the CO2 value read with the one in table 13-8.
Be sure to read the value for the type of gas being used. The
CO2 value must be within the values shown; if not, stop the
appliance and call the manufacturer.
12- Set parameter
2010
to
OFF
to bring the appliance back
to normal operation.
13.- Close the combustion analysis hole in figure 13-9 with
appropriate plug “F” as per the instructions from the drain
pipe manufacturer.
WARNING!!! Once plug “F” is positioned with
the appliance at maximum output heat, make sure there
are no flue gas leaks.
F - Combustion analysis port
F
020014.01.037
