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ABCD
CHECKS
Before making the water circuit connections, check that:
• the system has been cleaned.
• there are no impurities in the circuit water.
• compatible components are used (do not connect copper and steel to each other).
• the system has been hooked up via the water circuit.
• the water is never harder than 20°F or softer than 12°F, and that its pH is 6.6 to 8.5. If this is not the case, install water treatment to
prevent incrustations and corrosion in the system.
• the water circuit pressure never exceeds 5 bar, otherwise install a pressure reducer at the system's intake.
• an anti-freeze kit is installed, if the system is being used in an area prone to freezing temperatures.
• in the heating system is present an expansion vessel dimensioned for the system water conten.
WATER PIPE FITTINGS
HYBRID MODULE
• connect the outdoor unit to the connection E and F of the Hybrid UNIVERSAL MODULE as shown in the fi gure. Pay attention to
respect the water fl ow directions.
• Connect the heating system connections to the A and D positions as shown in the picture.
• Connect the antifreeze kit in order to protect the system from the freezing even in case the units are not able to work (e.g. electical
supply missed).
• Connect a fi lter in the outdoor unit water inlet.
HYBRID MODULE
Filter
Valves kit (optional)
Dirt separator fi lter
(not supplied)
Flexible pipes kit (optional
Anti-freeze kit
(optional)
A. External unit hot water delivery
B. Return to the auxiliary generator
C. Delivery from the auxiliary generator
D. System delivery
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