HydroTap Installation and Operating Instructions - 89650UK - August 2011 v1.02 Page 9 of 24
Installation Procedure (continued)
NOTE:
- When fitted, the external filter will supply filtered water only for the Hot tank. The
internal filter will continue to supply filtered water for the cold tank.
- The external filter may require the inlet water pressure to be regulated to lower than
6 bar. In this case a 3.5 bar (350 kPa) Pressure Reduction Valve will be required.
- The rear of the unit is fitted with, 1/4” John Guest, inlet and outlet fittings,
specifically for the Zip high performance filter kit.
- These instructions must be read in conjunction with the filter fitting instructions
supplied with the high performance filter kit.
- The filter assembly must be located close to the appliance with sufficient space for
service access. Consult the instructions supplied with the filter kit.
To fit the external filter kit:
- Access the filter bypass valve, by removing the white plastic plug, located on the Left
hand side of the undersink unit (see Fig.5)
- Using a suitable set of pliers, close the filter bypass valve as instructed in Figure 1.
- Remove the Inlet and Outlet plugs from the John Guest fittings as shown in Figures 2
; 3 and 4.
- After suitably mounting the filter assembly to an adjacent surface, measure and trim
the filter inlet and filter outlet tubes.
- Fit the tubes to their respective inlets and outlets, checking to ensure the flow of
water corresponds to the direction indicated by the arrow on the filter head and by the
instructions listed on the rear panel of the under sink unit.
- Check the lower left hand John Guest fitting is the ‘Inlet from the external filter’, and
the right hand John Guest fitting is the ‘Outlet to the external filter’.
- Refit the white plastic plug and relocate the undersink unit, ensuring all air gaps and
clearances are maintained. (see P4 Airflow details).
- Activate the filter programme within the service mode.
After Testing and Commisioning (Step F)
- Set the external filter life - Max 3000 Litres
- Set external filter use (No need to flush the external filter)
- Check all connections for leaks
CLOSED
OPEN
WHEN AN EXTERNAL FILTER
IS INSTALLED TO SUPPLY THE
HOT TANK, TURN THE VALVE
TO THE CLOSED POSITION.
REMOVE THIS PANEL
TO ACCESS EXTERNAL
FILTER BYPASS VALVE.
Inlet from external filter
with plug removed
Outlet to external filter
with plug removed
Inlet with plug
Outlet with plug
Fig.1
Fig.2
Fig.3
Accessing the filter bypass valve
Fig.5
John Guest fittings: Insertion and removal
Fig.4
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