Page 5
NOTE
• The cold water inlet and hot water outlet are 3/4” (20mm)
male (external thread) connections.
• The PTR outlet is a 3/4” (20mm) female (internal thread)
connection.
• The Drain port is a 3/4” (20mm) female (internal thread)
connection.
• All hot water plumbing must be insulated for safety & heat
retention.
• The circulating air for every unit should be more than
350m3/h. Make sure there is enough installation space.
Refer dimensional drawing (see page 4).
CAUTION
• Systems must be plumbed as per the above figure. In case of
installing where outside temperatures fall below 7°C, insulation
must be provided for hydraulic components (i.e. piping).
• If the inlet water pressure is less than 150kPa, a pump should
be installed at the water inlet.
• To guarantee the safe usage of tank, a reduction valve should
be installed in the water inlet line if the water pressure exceeds
500kPa.
• Pipes must be heat-resistant and durable.
WARNING
• Do not dismantle the PTR Valve,
• Do not block off the Drainage pipe, it may cause
explosion and/or injury.
4.2 Installation position requirement
Install the unit with suitable clearance for air flow and plumbing
access (refer to minimal clearances on previous page)
Position the unit on a flat sturdy surface able to bear the weight of a
fully filled unit (allow over 445kg).
COLD PIPE
(INC. NON
RETURN
VALVE)
PTR VALVE
(RUN TO LEGAL
POINT OF
DISCHARGE)
To ensure correct drainage of condensation from the unit, please
install on a level base. If the base is not level please ensure the
drain location is positioned towards the lower end. Maximum
inclination angle of unit relative to the ground is 2°.
EXPLOSION
SUITABLE
DRAIN
SUITABLE
DRAIN
COLD WATER EXPANSION VALVE
(May be required to meet
local regulations)
ISOLATION
VALVE
WATER IN
COLD WATER EXPANSION VALVE
(May be required to meet
local regulations)
NON-RETURN
VALVE
TEMPERING
VALVE
WATER IN
CONDENSATE
OUTLET
4.1 Plumbing Layout
SYSTEM
INSTALLATION
4
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