Commissioning And Maintenance; Boiler Maintenance; Resistance Of The Temperature Sensors - ACV Solo 18 Installation, Operating And Servicing Instructions

commIssIonIng and maIntenance

commIssIonIng the sYstem
FIllINg THE DHw CIRCuIT
- In the event of installation with a DHW cylinder, fill the cylinder slowly and
vent it by opening the hot water tap.
- Vent all of the taps and check for any leaks in the domestic hot water circuit.
FIllINg THE HEATINg CIRCuIT
- Before filling the boiler's heating circuit, switch the appliance on and wait
until the display shows the "E 47" error code indicating that the boiler has
insufficient water pressure, then switch the appliance off.
This enables the 3-way valve to get into mid position to allow filling of the
heating circuit.
- Fill all of the heating circuit up to a minimum of 1.5 Bar using the filling loop
for your system. The filling phase must take place slowly to allow proper
venting of the system through the automatic air vent.
- If your system is equipped with a hot water tank, vent the tank's primary
circuit with the help of the manual vent valve positioned on the top of
the tank.
- Check for any leaks in the heating circuit.
gAS SuPPlY AND CO ADJuSTmENT
2
- Open the gas isolation valve, vent the pipe and check for any possible
gas leaks.
- Check that the condensate trap ball is present.
- Switch the boiler on using the ON/OFF switch.
If the boiler does not start up, check the boiler's heat and/or room
thermostat settings, increase the temperature if necessary.
- Check the gas pressure
(see diagram below ref. 1)
for a few minutes.
v
1
- Set the boiler to high power mode and check the CO2 using the technical
characteristics chart. Next, set the boiler to minimum power mode and
check the CO2 using the same chart.
- Set the central heating and hot water temperatures according to the values
indicated in the instructions for use.
- Bleed the central heating system again, and if necessary, fill to reach the
desired pressure:
- Make sure that the heating circuit is properly balanced, and, if necessary,
adjust the valves to obtain the correct flow rate for all circuits or radiators.
664Y4200 • F
and leave the boiler to heat
REF. 3:
The OFFSET adjustment
of the gas valve is factory
3
preset and sealed.
It cannot be modified.
EN • 30
CHECkINg THE SETTINgS
- Check if the parameters are set to meet the user's needs.
- Checking the boiler's settings: only a trained ACV installer or the ACV
maintenance department can perform this task.
- Set the appliance to maximum power (see ESYS instructions for installer).
- Check the dynamic gas pressure on the gas valve (see diagram below, ref.1).
This must be at least 18 mbars.
Let the appliance heat for a few minutes to a minimum temperature
of 60 °C.
Check the CO2 setting of the appliance using a flue gas analyser.
The optimum value is indicated in the technical characteristics chart. To
increase the CO2 value, turn the venturi screw counter-clockwise. Turn it
clockwise to decrease this value (see diagram below, ref. 2).
Then put the appliance in minimum power mode (see ESYS instructions for
the installer).
Let the appliance stabilize for a few minutes. Check the CO2 value. It should
be either equal to the value at full power or a maximum of 0.5 % less than
it. If you observe a significant deviation, please contact ACV's maintenance
department.

boIler maIntenance

ACV recommends that you have your boiler inspected, and
cleaned, if necessary, at least once a year.
Isolate the appliance before undertaking any work on it, even if you are simply
taking measurements and making adjustments.
- Check that the condensate trap is not clogged, fill it as required and
check for leaks.
- Check that the safety valves are in good working order.
- Vent the whole system and refill the appliance if needed until it
reaches 1.5 Bar.
In the case of repeated fills, contact your installer.
- Check the boiler's combustion in maximum power mode.
If this value is very different from the original setting it may indicate an
obstruction in the air intake ducts or flue gas exhaust pipes, or that the
exchanger is clogged.
resIstance of the temperature
sensors
t° [°c] r Ω t° [°c]
- 20 98200 25
- 15 75900 30
- 10 58800 35
- 5 45900 40
0 36100 45
5 28600 50
10 22800 55
15 18300 60
20 14700 65
Specific regulation in Belgium:
The CO , gas flow, air flow and air/gas supply parameters
2
are factory preset and cannot be changed in Belgium.
r Ω t° [°c] r Ω
12000 70 2340
9800 75 1940
8050 80 1710
6650 85 1470
5520 90 1260
4610 95 1100
3860 100 950
3250
2750