Key to symbols and safety instructions
▶ If the building has occupants in the
above groups who operate hot water
faucets, or state laws / local
ordinances stipulate specific water
temperatures, take the following
– Use the lowest possible
– To prevent scalding, install a
tempering device, such as an
automatic mixing valve, at hot
water tap or water heater. Select
and install the automatic mixing
valve in accordance with the valve
▶ Water exiting from drain valves can be
extremely hot. To avoid injuries:
– Check that all connections are
– Direct exiting water away from
▶ Measures must be taken to protect
against excessive temperature and
pressure! Installation of a T&P safety
valve is required.
To protect against corrosion and ensure
compliance with the rules for electrical
safety, observe the following points:
▶ Use metal fittings for potable water
heating systems with plastic piping.
▶ Use only original accessories from the
▶ When installation of the water heater
is complete, inspect and confirm
proper ground conductor.
▶ Inspect and maintain the water heater
on a yearly basis. Service as needed.
See chapter 7.1.
▶ Use only genuine spare parts.
▶ After a flood, do not use the appliance
if any part has been submerged.
Damage to appliances that have been
submerged can be quite severe and
pose numerous safety risks.
▶ Every appliance that has been
submerged must be replaced.
For your safety
▶ Do not store or use gasoline or other
flammable, combustible or corrosive
vapors and liquids in the vicinity of
this or any other appliance.
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)