2.1.2. WATER HEATERS
COMMISSIONING
Proceed with water heaters commissioning as
follows:
› Power the water heaters.
› Open the gas valve.
› Ignite the unit by pressing the button
› Open the D.H.W. taps at the maximum flow rate.
The unit is ignited
WARNING
Please make sure all the air is flushed-
off by means of the drain valve located within the
unit (A - figure 22) and thru the air separator plug
(B - figure 22).
› if the flame is not sensed the board will repeat
the start-up operations after post-ventilation
(20 seconds).
› You might have to repeat the start-up operation
several times to release all air inside the gas
lines. Before repeating the operation, wait at
least 5 seconds from the last start-up attempt
and unlock the water heater from “E01” error
code by pressing the Reset ‘ ’ key.
B
A