Installer’s Guide – (Gas Post-Boost) Solar Water Heater
20
H4110 4110 Rev. F
ptr Valve
Step 23
• Connect the PTR valve and plumb
to waste to comply with AS/NZS
3500.4 and local plumbing codes.
• The pipe from the PTR valve
must
:
– be easily seen
– pose no risk of damage to the
building or injury to persons.
Gas Connection
Step 24
• Pipe sizes should be in accordance
with AS5601/AG601.
• Fit a union to the water heater
gas inlet for easy connection and
removal. The thread diameter is
R¾"/20mm.
• Fit an AGA approved isolating gas
cock in the supply line adjacent to
the water heater gas connection.
• Ensure that the supply pipe and
the gas pressure regulator (LPG
or Natural Gas) has sufficient flow
capacity for this and other appliances
connected to the fitting line.
• For LPG appliances, ensure that
gas cylinders are of sufficient size.
The water heater alone will require a
regulator of 4kg per hour capacity.
PTR valve
Plumb to waste
to comply with
AS/NZS 3500.4
and local plumbing
codes
Gas inlet
