e) COMMISSIONING
- Check that all the necessary components are supplied and for those not
factory fitted, that they are the type recommended by the manufacturer
for the particular water heater.
- Check that the water heater/components are undamaged.
- Check that the discharge pipe is plumbed so that it falls continuously and
that no taps, valves or other shut-off devices are installed in the pipe.
- Check that the discharge pipe drains safely to waste and is readily
visible.
- Check, in the case where some components are not factory fitted, that
they are marked so as to refer to the warning label on the water heater.
- Open all outlet taps.
- Turn on the mains water supply.
- Close taps in turn as water flow stabilises with no air bubbles.
- Check for leaks.
- Check that no water is passing through the safety valve(s).
- Test the operation of the safety valve(s) by lifting/turning the lever/knob,
and observing that water flows through and safely to waste.
- Switch on electricity and set thermostat to at 60°C to reduce the build up
of scale in hard water areas.
- Check the water heats up.
- Check that <<warning to user label>> is secure and visible on the heater
and related warning labels are fitted to the controls.
- Demonstrate operation to user, including operation of safety valve(s) and
what to do if it/they operate(s).
- Give this handbook to the user and discuss future maintenance.
Maintenance
a) For the user
In order to obtain the best performance from the heater,
the sacrificial
anode must be checked every year.
If the heating element is heavily
coated with scale we recommend descaling and removing any lime deposit
from the heater at the time of this inspection. Where the additional cold
water controls are fitted , the expansion vessel will need to be recharged
by the installer.
b) For the installer
WARNING:
Switch off the power first
Access to the electrical components, the magnesium anode and water
container is gained by unscrewing the 4 screws on the front cover.
If the thermal cut-out has operated the cause must be found before
resetting.
To drain the heater close the service valve and:
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