Swegon BlueBox Zeta Rev Series Installation, Use And Maintenance Manual page 38

03
Evaporator
09
Water filter
91
Thermometer
EL
Motor-driven pump
FL
Flow switch
GA
Flexible coupling
GR
System filling unit
MA
Water pressure gauge
RB
Valve
SA
Safety valve
SB
Storage tank
SF
Air valve
VE
Expansion vessel
VR
Check valve
It is essential for the water to come in at the connection indicated in the dimensional diagram and with the
relevant label on the unit.
If it does not, there would be a risk of the evaporator being frozen since the antifreeze probe control would be thwarted.
The hydraulic circuit must be made in such a way as to ensure a constant flow of water to the exchanger in all operating
conditions.
If this is not done, there will be a risk of refrigerant returning to the liquid state at the compressor inlet, with the danger of it
breaking.
Operation with a variable water flow rate at the user-side exchanger is allowed only if the inverter pump is integrated in the
unit (and therefore supplied by the manufacturer) and if the hydraulic circuit is made in accordance with the manufacturer's
specific instructions.
38
Translation from original instructions
Fig. 12 Recommended hydraulic circuit
We reserve the right to make changes without any prior notice.