Quick-Start Procedure; Start-Up Check-List; Before Starting-Up - Fujitsu WATERSTAGE WOYG112LHT Maintenance Document

Air to Water Heat Pump (Split integrated DHW type)

13 Quick-start procedure

Before switching on the hydraulic unit:
• Check the electric wiring.
• Check the refrigerant circuit and make sure the gas
supply has been performed.
• Check the pressure of the hydraulic circuit (1-2 bar),
check that the heat pump is purged, and the rest of the
installation.
• Make sure that ALL DIP SW are OFF before starting
up

13 .1 Start-up check-list

13 .1 .1 Before starting-up

• Sight checks
Outdoor unit (see chapter "Installation of the outdoor unit", page
Location and fittings, condensate evacuation.
Compliance with distances from obstacles.
• Hydraulic checks
Hydraulic unit (see chapter "Installing the hydraulic unit", page
Connection of pipes, valves and pumps (1 or 2 circuits, DHW).
Installation water volume (expansion vessel of adequate capacity ?).
No leaks.
Main system pressure and degassing (0,3bar > expansion vessel pre-loading).
• Refrigerant connections and checks
(see chapters "Refrigerant gas connection
and filling the installation with gas", page 17
Refrigerant circuits control (Sealing respected, no dust and moisture).
Connections between units (pipe length, flare tightening torque...).
Installation of HP, LP pressure switches on "Gas" line (large pipe).
Pump down required.
Nitrogen leak test (~ 10 bar).
Opening of refrigerant valves to outdoor unit.
Refrigerant filling of hydraulic unit and pipes.
• Electrical checks
Outdoor unit (see chapter "Electrical connections", page
Main power supply (230v or 400v).
Protection by rated circuit breaker.
Cable cross-section.
Earth connection.
Hydraulic unit (see chapter "Electrical connections
on the hydraulic unit side", page
Connection with outdoor unit (phase, neutral, earth or 3-phase + earth).
Sensors connection (positioning and connections).
3 way valve and circulators connections.
Power supply and protection of electric auxiliary (option).
- 76 -
14).
16).
& "Filling the installation with gas", page
32).
36).
OK Non compliant
OK Non compliant
OK Non compliant
20).
OK Non compliant
OK Non compliant
Installation and operating manual "1768 - EN"
Value
Value