Dismantling The Exchanger; Cleaning The Exchanger - ACV Solo 18 Installation, Operating And Servicing Instructions

commIssIonIng and maIntenance
dIsmantlIng accessorIes
DIVERTINg VAlVE mOTOR (STEPPER)
PRESSuRE SENSOR
NTC2 HEATINg RETuRN TEmPERATuRE SENSOR
HEATINg SAFETY VAlVE
CIRCulATOR

dIsmantlIng the exchanger

- Drain the central heating water using a connection below the lower level
of the appliance.
- Let the appliance drain completely.
- Unscrew retaining screw "A" from the exchanger.
A
- Dismantle the electric connections from the burner, as well as the NTCs.
- Dismantle the inlet and outlet hydraulic couplings by removing the pins.
Use caution while disassembling: residual water may escape from
the exchanger.
- Disassemble the condensate trap connection and disassemble the retaining
screw situated between the condensate trap and the exchanger.
- Lift the complete exchanger assembly vertically.
The exchanger detaches from the retaining bracket and is free to remove.
- Check the condition of the O-Rings and replace them if necessary.
Reassemble the exchanger using the same procedure in reverse order.

cleanIng the exchanger

- Dismantle the burner previously described.
- Remove the burner insulation.
- Use a vacuum cleaner to clean out the chamber.
- Disconnect the chimney from the exchanger.
- Check to see if the condensate collector is dirty and clean if necessary.
- Check the burner's insulation and seal. Replace if necessary.
- Check the electrode and replace if necessary.
- Reassemble the burner and check for any leaks.
- Switch the appliance on again. Set to maximum power mode and
check for leaks.
- Check the gas pressure and the CO
previous section.
EN • 33
setting as described in the
2
664Y4200 • F