Thermann Installer's Manual
Electric Hot Water Tanks (Solar-Ready)
6
WARNING
Legionella Control:
Legionella bacteria can be found naturally in the
environment and thrives in warm water and damp
places. It can weaken the body’s immune system, which
can increase the chances of developing Legionnaires’
disease. To ensure legionella growth is inhibited, the
boosting regime must meet the guidelines as shown
in Chapter 8: Auxiliary Heating. This is in accordance
with ‘AS3498.2009 Authorisation requirements for
plumbing products - water heater and hot-water storage
tanks’ It is therefore, very important that the auxiliary
boosting system remains on. It will only activate if the
temperature falls below the temperatures outlined.
EHW TANK
Hydrogen Build Up:
Glass lined (vitreous enamel) tanks are fitted with a
Magnesium anode to provide corrosion protection
for the tank from the storage water. Small quantities
of hydrogen gas can be released by the anode, which
generally remains dissolved in the water and flushed
away as hot water is used from the tank. Depending on
the water quality there may be a degree of hydrogen
build-up in the tank if the water heater hasn’t been
used for two or more weeks.
To resolve the build-up of hydrogen within the tank
“purge” the tank for approximately 30 seconds from
the lever on the PTRV.
Ensure there are no open flames or ignition sources
close to the tank.
WARNING
Thermann Installer's Manual
Electric Hot Water Tanks (Solar-Ready)
6
WARNING
Legionella Control:
Legionella bacteria can be found naturally in the
environment and thrives in warm water and damp
places. It can weaken the body’s immune system, which
can increase the chances of developing Legionnaires’
disease. To ensure legionella growth is inhibited, the
boosting regime must meet the guidelines as shown
in Chapter 8: Auxiliary Heating. This is in accordance
with ‘AS3498.2009 Authorisation requirements for
plumbing products - water heater and hot-water storage
tanks’ It is therefore, very important that the auxiliary
boosting system remains on. It will only activate if the
temperature falls below the temperatures outlined.
EHW TANK
Hydrogen Build Up:
Glass lined (vitreous enamel) tanks are fitted with a
Magnesium anode to provide corrosion protection
for the tank from the storage water. Small quantities
of hydrogen gas can be released by the anode, which
generally remains dissolved in the water and flushed
away as hot water is used from the tank. Depending on
the water quality there may be a degree of hydrogen
build-up in the tank if the water heater hasn’t been
used for two or more weeks.
To resolve the build-up of hydrogen within the tank
“purge” the tank for approximately 30 seconds from
the lever on the PTRV.
Ensure there are no open flames or ignition sources
close to the tank.
WARNING
