maintenance guide
Annual Maintenance
Plate heat exchanger
Maintenance Interval: As necessary
How: To measure specifi- cation of DHW perfor- mance.
By-pass & Safety valve
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
Central heating filter
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
Flow switch operation
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
/ Check flow rate
Expansion vessel
Maintenance Interval: Annually
How: Check air pressu- re is at 1 bar (System drained)
Ignition & detection electrodes
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary / Di- stance from the burner / Ionisation current more than 1 μA
Burner
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
Fan
Maintenance Interval: Annually
How : Visual inspection / Clean as necessary
Primary Heat exchanger
Maintenance Interval: Annually
How : Visual inspection / Clean as necessary
Condensate trap
Maintenance Interval: Annually
or after cleaning primary heat exchanger
How: Visual inspection / Clean as necessary / Add water before replacing
Pump
Maintenance Interval: At the first ignition and annually
How: Check that the AAV is open /
Visual inspection / Clean as necessary
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