Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
9 Servicing
83311002 1/2018-03 La
72-132
9.2 Components
In addition to the servicing steps listed in the inspection card, the following com-
ponents must be tested for their design lifespan.
Components, which show increased wear and tear or whose design lifespan is or
will be exceeded prior to the next service should be replaced as a precaution.
Check the design lifespan of the components.
Replace components as necessary
Components
Design lifespan
Boiler electronics WCM-OB-CPU
360 000 burner starts
Oil solenoid valve
250 000 burner starts or 10 years
Oil hoses
5 years