PRELIMINARY PROCEDURES
Multidea Evo leave the factory:
- set up for operation with G20 (natural gas), but with the option of operating with LPG (G30-Butane / G31 - Propane)
- unit DSP in stand-by
- in the “none” operating mode; both heating and DHW requests are
disabled. This prevents the boiler from starting when powered up,
even when there is a heating request.
- without the check valve fitted
Beforecommissioningtheappliance,itisessentialtoestablishwhichtypeofgasistobeused.IfthisisLPG,the
setting of the type of gas must be changed as described in the paragraph “CHANGE OF GAS TYPE” page 44.
Following this, ensure that:
- all fuel shut-off valves and water valves are open
- the mains gas pressure is sufficient and that the pipelines have been purged
- the hydraulic circuit pressure, in cool conditions, is greater than 2 bar and no air is present in the circuit (purging
completed)
- the expansion vessel is fitted, correctly sized and pre-charged
- all electrical connections have been made correctly
- the flue exhaust ducts and fuel air intake points (if present) comply with specifications/requirements
- the check valve is fitted and the relative data plate specifications are compatible with the maximum operating pressure
of 6 bar
- the syphon is filled and the condensate drain line is routed correctly.
b
WARNINGS
•
Ensure that no ice has formed inside the boiler before connecting and powering it up.
INITIAL COMMISSIONING
INITIAL COMMISSIONING
- Power up the boiler from the electrical mains by setting the main
system switch (IG) to “ON”.
- The display returns to the stand-by screen.
- Press
H
to activate the keypad for the DSP.