Maintenance
Precautions
1. The Zip Varipoint is an unvented electric water heater and a competent person,
familiar with unvented systems, should carry out all servicing and maintenance
2. Do not remove the electrical cover panel whilst the unit is connected to the
electrical supply
3. Do not reset the over temperature cut-out until the cause of its operation
has been diagnosed and necessary repairs have been undertaken
4. Do not use the water heater if it is suspected of being frozen. Switch off the
electrical supply if water ceases to flow and do not switch on again until a
competent person has checked that it is safe to do so
5. The heater should be visually inspected regularly. This is particularly
important if the heater is located in a cupboard, roof space or any other
concealed location. If there is any sign of leaks or seepage the heater
should be isolated from the water supply and switched off from the
electrical supply until a competent person has investigated the cause.
6. Do not block or restrict the discharge from any safety valve
7. Do not tamper with any safety valve
8. If water discharges from any safety valve switch off the electrical supply to
the unit, isolate the water supply and contact a competent person familiar
with unvented systems
9. Please note that lime-scale deposits form more readily at higher
temperatures. Damage or failures caused by the formation of lime-scale
are specifically excluded under the terms of the warranty. To reduce
lime-scale formation to a minimum the unit should always be operated
at the lowest convenient temperature.
10. If power has been disconnected it is recommended that the unit is drained
(see draining).
Schedule
It is recommended that all key components of the heater should be inspected
on a regular basis, no greater than twelve monthly intervals, for continued safe
and efficient operation. The inspection should be carried out by a competent
person familiar with unvented systems and the components to be inspected
should include the following:
1. Expansion relief valve. Check correct operation
2. T&P relief valve. Check for correct operation
3. Check expansion vessel pressure – refer to label on vessel for correct pressure
4. Inspect integral line strainer and clean as necessary
5. Check that the discharge pipework is free of any obstructions
6. Check that all electrical connections are tight
Zip Varipoint III Installation, Maintenance and User Instructions - August 2008
13
Varipoint qxd:Varipoint qxd 22/8/08 11:09 Page 11
