Owner’s Manual – Prodigy 5
4
H3109 3109 Rev. E
Plumbing Connections
Pressure & Temperature Relief
Valve
The Pressure & Temperature Relief Valve
is supplied loose with the water heater.
The valve rating is:
All Models – 1400kPa
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.
Warning:
We recommend that you
open the PTR valve at least once every
six (6) months. Failure to do this may
result in problems with the water heater.
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
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.
Cold Water Connection
It is mandatory to fit the following items
between the supply main and the
RP¾"/20mm socket in the water heater.
• an isolating valve
• a non return valve
• a line strainer
• a union
All fittings must be approved by the
relevant Authority and in accordance to
the plumbing code.
Union
Connection
Non-return
Valve
Line
Strainer
Cold Water
Inlet
Drain
Pressure
Relief Valve
Isolating Valve
(Spindle Vertical)
Note:
a combined isolating valve/non-
return valve/line strainer may be used.
Expansion valve only required where local
regulations demand.