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Quick-start procedure
Before switching on the hydraulic unit:
• Check the electric wiring.
• Check the refrigeration circuit and make sure the it has been gassed.
• Check the hydraulic circuit's pressure (1 to 2 bar), check that the heat pump has been bled, along with the rest of
the installation.
• Make sure that ALL DIP SW on the interface board are OFF before starting up.
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Start-up check-list
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Before starting-up
OK Not compliant
Installation (" Installation", page 16)
Surface, volume and ventilation of the room
Floor fi xing of the hydraulic unit
Visual checks Outdoor unit (see chapter
"Installation of the outdoor unit", page 17)
Location and fi ttings, condensate evacuation.
Comply with distances from obstacles.
Hydraulic checks Hydraulic unit (see chapter
"Installation of the hydraulic unit", page 20)
Connection of pipes, valves and pumps (heating circuit, DHW).
Installation water volume (expansion vessel of adequate capacity?).
No leaks.
Main system pressure and degassing.
Refrigeration connections and checks (see chapters
" Refrigeration connections", page 26)
Check the refrigeration circuits (sealing, no dust or humidity).
Connections between units (pipe length, fl are tightening torque...).
Mechanical protection of refrigeration connections
Installation of HP pressure gauges on the gas line (large tube).
Pump down mandatory.
Nitrogen leak test (~ 10 bar).
Opening of refrigeration valves to outdoor unit.
Filling hydraulic unit and pipes with refrigerant.
Indicate on the label present on the outdoor unit, the amount of gas (Factory + additional fi lling)
Electrical checks Outdoor unit (see chapter
"Outdoor unit", page 36)
Main power supply (230 V).
Protection by rated circuit breaker.
Cable dimensions.
Earth connection.
Hydraulic unit (see chapter
"Hydraulic unit", page 38)
Connection to outdoor unit (L, N, Earth).
Sensors connection (positioning and connections).
Distribution valve connections (boiler and DHW) and circulation pump.
Power supply and protection of electric backup (option).
Alfea Extensa A.I. R32 / INSTALLATION / 2114 - EN
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