13
GENEVA
UNVENTED WATER HEATER
8. MAINTENANCE & CLEANING
Servicing and maintenance must only be carried out by a competent unvented hot
water professional or by Rointe authorised personnel, at least once per year. This
includes the tank, heating elements and magnesium anodes.
Before any work is carried out on the installation, it MUST first be isolated from the mains
electricity supply. Only use spare parts authorised by Rointe. The use of other parts will
invalidate the warranty.
Drain the cylinder – When draining the cylinder, always switch off the product. Turn off the
water supply at the stopcock (see Figure 2). Connect a hosepipe to the drain cock (see
Figure 2) and route it to a convenient gully. Open the drain cock and all hot taps that are
served by the cylinder. The cylinder may take several minutes to empty completely.
Check the magnesium anode at least once per year, and replace if worn or defective.
Remove the cartridge from the pressure reducing valve. Check the strainer and if necessary
remove any debris from in front of it. Replace the cartridge.
Check the charge pressure in the expansion vessel and top up as necessary. The charge
pressure should be 0.15 or 0.3 MPa.
Close the drain cock, disconnect the hose, refit the heating element and close all hot water
taps before reopening the stopcock. Allow the cylinder time to fill whilst checking for any
leaks. Release any air from the system by opening each hot water tap individually, starting
with the one furthest from the cylinder.
Manually lift the expansion relief and temperature and pressure relief valve one at a time,
every 12 months (more frequently in hard water areas) to prevent debris from building up
behind the valve seat. Whilst carrying out this operation, check that the discharge to waste
is unobstructed. Check that each valve seals correctly when released. As the valves are
pre-calibrated, they require no further maintenance.
Finally, when the product is full of water switch on the mains electricity supply to the product.
As the system heats up, check again for any leaks and rectify as necessary.
In the event of the manual reset cut-out operating, isolate the product from the mains
supply, investigate and identify the cause of the operation of this cut-out, rectify the fault
before manually resetting the cut-out via the reset button on the cut-out. Finally switch the
mains electricity supply back on.
WARNING:
Disconnect the product from the power supply before any cleaning or
maintenance. Do not use any abrasive product on the aluminium, such as (but not limited
to) chemicals, rough cloths, hard bristled brushes or wire/steel wool.
