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4.6 The 15mm Push Fit Cap, with tamperproof collet, must be fitted to the Vent Pipe
on the top of the heater.
4.7 In an Open Outlet installation it is normal for the spout to drip during heating.
This is due to expansion of water as it is heated within the unit, it does not
indicate a fault. DO NOT attempt to stop this dripping by over-tightening the
inlet tap as damage to the sealing washers or internal operating mechanism will
occur.
5.0 INSTALLATION - CISTERN FED (LOW PRESSURE)
5.1 This method of installation must be used if the outlet is to be connected to one or
more conventional taps. It is not recommended for supplying a shower. Indi-
vidual site demands should be considered when choosing the number of outlets to
be served.
5.2 A vent pipe must be connected to the outlet connection of the heater.
The vent pipe must have a minimum internal diameter of 19mm.
The vent pipe must be unobstructed, rise continuously and be arranged to
discharge over the cold water feed cistern.
DO NOT connect any pressure relief device to the vent pipe of this water
heater.
Diagram 4 Typical Cistern Fed installation
6
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