General Checks
Vented System Maintenance Requirements
| Component |
Interval |
Procedure |
| Vented Hot Water System |
12 months |
General inspection |
| Control valves |
12 months |
close tightly; operate smoothly; clearly labelled; customer is aware of isolation valves |
| Storage cisterns |
6 months |
clean out; lid is squarely fixed; signs of stagnation; cistern base is sound; blockage and correct fall of the overflow pipe; insulation is intact |
| Float operated valve |
6 months |
operation and shut off; correct water level; re-washer or replace |
| Terminal fittings |
6 to 12 months |
rewasher, reset or renew; tighten packing glands; spindles for wear; clean spray heads on taps |
| Pipework |
12 months |
signs of leakage or corrosion; tighten loose fittings; replace vulnerable sections |
| Thermostat |
6 months |
boiler/cylinder/immersion heater thermostat/cut outs are working to specification; cylinder and terminal temperature conforms to regulations |
| Earthing and bonding |
At time of other inspection |
is intact; get electrician to check if in doubt
|
Maintenance
- Pipework and corrosion – 12 month
- Most valves and gauges – 6 month
- Checking the Gate Valve Gland on the cold feed to HWSC
- Commissioning instructions – referred to a component is working as intended
- Banging noise at working temperature – air in a HW pipe
- Creaking noise from below the floor – movement of tight fit HW pipes
- Lukewarm water from cold tap – HW and CW pipes run close together and not insulated
