Dux sunpro 2F136S - Cold Water Connection

Owner’s Manual – Dux Electric Boosted Solar
5
H3161 025248 Rev. D
The PTR Valve must not be tampered
with or removed. The water heater must
not be operated unless this valve is
tted 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.
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.
Cold Water Connection
An approved isolating valve, non
return valve, line strainer (optional but
recommended), and union must be
tted between the supply main and the
RP¾"/20mm T tting connected to the
socket in the water heater.
All ttings must be approved by the
relevant Authority and in accordance to
the plumbing code.
Union
Connection
Non-return
Valve
Line
Strainer
Cold Water
Inlet
Expansion
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.
Note for S.A. and W.A.: It is a state
requirement that a pressure relief valve
be tted on the cold water supply line
between the non return valve and the
water heater.
PTR valve
Plumb to waste
to comply with
AS/NZS 3500.4
and local plumbing
codes
Plumbing Connections