Dux Proflo 400S2 Benutzerhandbuch - Seite 6

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Pressure & Temperature Relief

Valve

The Pressure & Temperature Relief Valve

is supplied loose with the water heater.

The valve rating is:

80L = 1400 kPa

125L = 1400 kPa

160L = 1400 kPa

250L = 1000 kPa

315L = 1000 kPa

400L = 1000 kPa

The PTR valve must be installed directly

into the top socket marked "RELIEF

VALVE". The drain line from this valve

must run in a continuously downward

direction in a frost-free ambient position

with the discharge end left open to

atmosphere permanently.

The PTR Valve is not intended to enable

connection of the water heater to

supplementary energy sources such as

solar panels or slow combustion stoves

(refer AS/NZS 3500.4 for guidance on

these types of installations).

Open the PTR Valve for approximately

10 seconds by lifting the lever on the

valve to ensure water is relieved to waste

through the relief drain pipe. Lower lever

gently and check that it closes correctly.

The PTR Valve must not be tampered

with or removed. The water heater must

not be operated unless this valve is

fitted and in working order.

The PTR Valve should be checked for

adequate performance or replaced at

Owner's Manual – Proflo Electric Storage Water Heaters

Plumbing Connections

intervals not exceeding 5 years, or less

in areas where local regulations apply.

Important: The PTR Valve and its

drain outlet pipe must not be sealed or

blocked. It is normal for the PTR valve

to leak a small amount of water during

heating cycles.

Danger

Failure to operate the relief valve easing

lever at least once every six (6) months

may result in a problem with the water

heater and in some cases the tank may

explode.

Warning: A separate drain line must be

run for this relief valve. It is not permitted

to couple drain lines from relief valves

into a single common drain line.

Note: Brass plugs are supplied with

the water heater to plug off the unused

fittings. Ensure that a sealing material is

applied to the plugs to prevent leaking.

Cold Water Connection

An approved isolating valve, non

return valve, line strainer (optional but

recommended), and union must be

fitted between the supply main and

either of the RP¾/20 sockets marked

"Inlet" at the bottom of the water heater.

All fittings must be approved by the

relevant Authority. See the diagram on

page 5 for details.

Note for S.A. and W.A.: It is a state

requirement that a pressure relief valve

be fitted on the cold water supply line

H0421

0421

Rev. G