Technical data

Maintenance 10
Vaillant Vantage 120/150/200 31
10 Maintenance
The following maintenance work has to be carried out
annually by the competent installer or Vaillant Service
Solutions.
•
Inspection of pressure/temperature relief valve and
expansion relief valve.
Manually operate each valve by twisting the operating
cap, and check if water flows unobstructed via the tun-
dish to the discharge point. Ensure that both valves
re-seat satisfactorily.
•
Check pressure of expansion vessel.
•
Turn off mains water supply and open nearest hot
water tap to depressurise the secondary water system.
Check the expansion vessel charge with a pressure
gauge at the test point. If the pressure is below
3.5 bar, top up with suitable air pressure pump.
•
Every 2 years check corrosion protection anode for
wear.
•
The anode has a life expectancy of approximately 6
years. It should be replaced if the diameter is less than
12 mm.
Servicing procedures for the Vaillant boiler are contai-
ned in the boiler installation and servicing instructions.
Note:
In the event that parts require replacement, use
only genuine spare parts supplied by Vaillant
Ltd.