Dux 170ZB4P Owner's Manual - Page 8

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Owner's Manual – Prodigy 4

Plumbing Connections

Cold Water Connection:

The water heater is intended to be

permanently connected to the water

supply main.

An approved isolating valve, non-

return valve, line strainer (optional but

recommended) and union must be fitted

between the water supply main and the

RP¾"(DN20) socket marked "INLET" at

the bottom of the water heater on the

left hand side.

All fittings must be approved by the

relevant Authority. Plastic pipes or

fittings shall not be used between the

isolating valve and the inlet.

See the diagram below for details.

Cold Water

Inlet

Note: a combined isolating valve/non-return valve/line strainer may be used.

The expansion control valve is only required where local regulations demand,

although it is recommended in areas where the water saturation index is greater

than 0.40.

Cold Water Connections

Isolating Valve

(Spindle Vertical)

Line

Strainer

Water Supply Pressure:

This water heater is designed for direct

connection to water supply pressures of

up to 1120 kPa.

Where the mains pressure can exceed

or fluctuate beyond the pressure shown

above, a pressure reducing valve must

be fitted in the cold water inlet supply.

Note for New Zealand, South

Australia and Western Australia:

It is a requirement in these locations that

an expansion control valve be fitted on

the cold water supply line between the

non-return valve and the water heater.

Expansion

Control Valve

Drain

Union

Non-return

Connection

Valve

H3071

3071

Rev. K