Stiebel Eltron ACCELERA 300 Manuel D'utilisation Et Installation page 20

INSTALLATION
INSTALLATION
Accurately maintain the order of fittings on the cold water side
(see diagram 10.7).
11.9.1 Safety valve (on-site provision)
This water heater is a sealed unit. A 0.69 MPa, 99 °C (100 psi,
210 °F) T&P relief valve must be installed.
When installing the T&P valve, observe the following:
- Size the drain line so that water can drain off completely,
even if the safety valve is fully open.
- The drain outlet must not be able to be closed and must
always remain open to atmosphere.
- The T&P valve must open at a pressure of 0.69 MPa (100 psi)
and be 3/4" pipe thread.
11.9.2 T&P valve (on-site provision)
WARNING Risk of injury through excessive pressure
and temperatures.
Install safety equipment that meets the applicable
regulations for the installation locations. In any case
install a "Pressure and Temperature Relief valve (T&P
relief)" that complies with the requirements of the
ANSI Z21.22 ("Requirements for Relief Valves and
Automatic Gas Shut-off Water heaters for Hot Water
Supply Systems").
The T&P valve must respond at a pressure of 0.69 MPa
(100 psi). Fit the T&P valve into the opening on the
circumference of the water heater indicated.
Ensure that any expelled water cannot come into
contact with 'live' parts and will not run onto sensitive
surfaces. Ensure that the T&P valve outlet remains
free at all times.
11.10 Power supply: 240V / 15A double pole
circuit breaker
The electrical connection must be carried out by a qualified
electrician.
DANGER Electric shock
Contacting 'live' components results in a risk to life.
» Disconnect the water heater from the power supply
before carrying out work on the control panel.
» Be sure that no one can reconnect the power while
you are working.
When making a connection use code compliant disconnects.
Undo the screws and remove the water heater cover.
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