Table of Contents
Advertisement
3.3.2 Measurement and adjustment of percentage of CO2 for MERIDIAN 3.15 (valve
system + mixer SIT)
hundreds and thousands and the two small digits on the right 53) indicate the units and
tenths. (see Figure 17).
♦ Place the combustion control sensor Fig 15 gas sampling connection and measure the
percentage of CO
♦ If necessary, adjust the value (see Table 6) by turning the Venturi screw (B) as shown
in Fig. 16 using a 4mm Allen key.
♦ Turn anti-clockwise to increase the percentage of CO2;
♦ Turn clockwise to decrease the percentage of CO2;
The adjustment of the gas valve and consequently of
the CO2 have to execute regulating before maximum
flow and then minimum flow
27
To set the CO
♦ Remove the front cover of the boiler;
♦ Turn the boiler control panel and unscrew the two
side screws that hold it in place.
max
♦ Move the boiler selector
sweep", a function which
the display with a "spanner" symbol and then set the
min
heating potentiometer to maximum.
♦ With the boiler burner on, reset the function
selector.
♦ Display the fan rpm by quickly turning the sanitary
knob. Behind the control panel, use a small slotted
screwdriver to adjust the number of fan rpm on
trimmer P4 as indicated in Table 5 on page 28.
Information appears on the front of the display where
the two large digits on the left 54) indicate the
;
2
B
A
value, do the following:
2
39
to
"Chimney
appears
on
Hide quick links:
Advertisement
Table of Contents
