MAXA bi-32V5C MIDI 0128, Technical Bulletin

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i-32V5C MIDI
Inverter Air/Water chillers with axial fan
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LEGEND
TE OUT 1
WATER TEMPERATURE PROBE USER
OUTLET
FC 1 FLOW SWITCH
--- Accessory installed on board
In any case, each unit includes a safety valve with 6 bar opening pressure.
ATTENTION: It is recommended to connect the safety valve vent to a suitable conveyor/discharge.
Otherwise the discharged water could stagnate around the unit and become a source of danger by slipping/falling.
4.1.3 Minimum water content and hydraulic circuit volumes
Minimum water content and hydraulic circuit volumes.
The table shows the minimum system water content recommended per unit. The volume of the hydraulic circuit is also indicated. If this volume
is less than the recommended minimum water content, it must be ensured that the pipes connecting to the unit have sufficient capacity to com-
pensate for this difference. The additional volume required is shown in the table.
Model i-32V5C Midi 0121 0126 0128 0132
Minimum system water
content [l]
110 110 110 110
Hydraulic circuit volume [l] 2,4 2,4 3,4 3,4
4.1.4 Condansate drainage system
As the pipes are well insulated, the production of condensation is minimal and does not lead to the accumulation of water inside the refrigeration
compartment.
4.1.5 System charging / discharging
CAUTION: supervise all filling/top-up operations.
CAUTION: before filling/topping up the system, disconnect power to the units.
CAUTION: the system must always be filled/topped up in controlled pressure conditions (1÷3 bar).Make sure that a pressure
reducer and safety valve have been installed on the filling/top-up line.
CAUTION: The water in the loading/reintegration line must be properly pre-filtered from any impurities and suspended
particles. Ensure that a removable cartridge filter and a dirt separator are installed.
CAUTION: regularly check and vent the air built up in the system.
CAUTION: install an automatic air venting valve at the highest point of the system.
If it is necessary to top up the system or adjust the glycol content, the service tap can be used. Unscrew the
cap of the service tap (A) and connect a 14 or 12 mm pipe (internal diameter measurements - check the tap
model installed on your unit) to the hose connector connected to the water mains, then fill the system by
unscrewing the ring nut (B). After this operation, tighten the ring nut (B) again and screw the cap (A) back on.
In any case, it is advisable to use an external tap to fill the system.
B
A
If the unit must be completely drained, first close the manual inlet and outlet shutters (not supplied) and then disconnect the pipes externally