Thermann TH32END5L, Руководство по установке

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Thermann Installer’s Manual
Gas Continuous Flow Water Heaters
26
Recirculation System
• With a Recirculation System, the water from the Water Heater to the fixtures can be warmed up in advance.
You can get hot water to your fixtures more quickly with less waste of water.
• Scale build-up is more likely to occur in a Recirculation System, therefore it is critically important to have
proper maintenance. Refer to the Owner’s Manual.
Cold Water Supply
Expansion Tank
(Install according
to local code)
Fixtures
Hot Water Return Line
Hot Water
Relay for Pump
Optional 30-40 L Storage Tank
(To alleviate temperature fluctuation)
Globe
Valve
Gas Supply
Aquastat
Set the Aquastat to 5˚C below
the set output temperature.
An aquastat is the minimum
pump control requirement in
order to maintain the full
recirculation warranty.
Pump Control Signal
Pump Control Signal is the
preferred method to control
the recirculation pump.
A relay connection must be
used.
If the Pump Control Signal is
not used, an Aquastat may be
used to control the pump.
Pump
Size the pump to provide a
maximum of 7.5 L/min through
the system at 3 m of head plus
piping losses.
Adjust the flow using a globe
valve and verify the flow rate
with the maintenance monitors.
11. Plumbing Application
(For TH32END6 series only)