Electrical; Commissioning; Maintenance; Precautions - Zip Aquapoint III AP3/30 Installation Instructions Manual

Electrical

Switch off the mains electrical supply before removing the electrical cover panel
or carrying out any work involving a live circuit or access to components that
may be live.
Do not switch on the electrical supply until the unit is full of water.
This appliance must be earthed.
The electrical connection to the heating elements must conform to current
IEE wiring regulations and be permanently connected to the electrical
supply through a double-pole isolating switch with at least 3mm contact
separation in each pole and with a minimum rating of 15A.
All internal wiring is factory mounted and should not be altered or modified.
A suitable supply cable should be fed through the grommet on the underside
of the appliance, connected to the live, neutral and earth connections on the
terminal block and secured with the cable clamp provided.
Check all electrical connections for security and tightness.
The appliance has a working thermostat adjustable between 25ºC and 75ºC.
An over temperature cut-out is incorporated within the thermostat which is
designed to operate at 79-84ºC. Should this happen, press the reset button.
Important: Before resetting the over temperature cut-out or altering
the thermostat setting, isolate the electrical supply to the unit before
removing the electrical cover panel. Ensure that the cover panel is
replaced correctly and the retaining screws fitted before re-connecting
the electrical supply.

Commissioning

1. Check that all the requirements under "Installation Requirements" have
been met
2. Check that all water and electrical connections are correct and tight
3. Check that the expansion vessel pressure is correct – refer to label on
vessel for correct pressure
4. Check that the drain valve on the inlet manifold is closed
5. Open hot water taps
6. Open the cold water supply valve and permit the heater to fill
7. Leave hot taps open until all air has been purged from the system and
water is flowing freely from all outlets
8. Check for leaks and rectify as necessary
9. Check the operation of the T&P relief valve
10. Manually operate Expansion Relief Valve to ensure free water flow
9 AP3/30, AP3/50, AP3/80, AP3/100 Installation Instructions
through the discharge pipe by turning the knob to the left and holding
in the open position
11. Set the thermostat(s) to the desired temperature setting. The 'E' position
with a water temperature of approx. 55ºC is recommended for economical
operation while minimising lime-scale deposits and thermal losses
12. Switch on the electrical supply to the unit. The pilot light will illuminate to
indicate that the elements are operating
13. During the heating cycle no water should escape to waste from either the
expansion relief or T&P relief valves
14. Allow the heater to reach the selected temperature when the pilot light
will extinguish. Check the water temperature and re-check water
connections adjusting as necessary
15. Pass these instructions to the person responsible for the building
management

Maintenance

Precautions

1. The Zip Aquapoint 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
AP3/30, AP3/50, AP3/80, AP3/100 Installation Instructions 10