4. An isolating valve (not supplied) must be fitted in the cold water supply
pipework to the inlet manifold assembly to enable isolation of the water
supply to the unit for servicing or replacement.
5. Fit the inlet manifold assembly to the 22mm supply pipework with the valve
caps facing upwards and in the correct direction of flow as indicated by
the arrows.
6. The pressure gauge connection point on the manifold assembly should be
accessible for connection of a pressure gauge if necessary.
7. Provide suitable drainage from the Expansion Relief and Temperature &
Pressure Relief Valves via the tundish using 15mm copper tube. Refer to
installation requirements.
8. Connect the expansion vessel to the manifold assembly using 15mm
copper tube.
9. A balanced mains pressure cold water supply for a shower may be
provided from the connection provided on the manifold assembly,
otherwise this should be blanked.
10. Flush all pipework thoroughly before making the final connections from the
cold supply to the manifold assembly to ensure that any debris is removed.
Failure to do this may result in irreparable damage to the controls and will
invalidate the warranty.
11. Connect the hot water supply pipe to the outlet from the heater.
12. Connect the discharge pipe from the tundish. Refer to Installation
Requirements on page 6 and Typical Installation drawing on page 5.
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 13A.
All internal wiring is factory mounted and should not be altered or modified.
After removing the electrical cover panel, a suitable supply cable should be fed
through the cable clamp on the underside of the appliance, connected to the
live and neutral connections on the terminal block and earth terminal on the
element plate before securing with the cable clamp.
Check all electrical connections for security and tightness before replacing the
electrical cover panel.
Zip Varipoint III Installation, Maintenance and User Instructions - August 2008
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