AIR-COOLED LIQUID CHILLERS 30RBV 017-021
Hydronic module
protect the installation even in case of power failure
The hydronic module is integrated into the unit without
increasing its dimensions and saves the space normally used
for the water pump.
2 Hydronics modules are available in option :
-- With fixed speed pump
-- With Variable speed circulator
COOLING
The hydronic module reduces the installation time. The unit
is factory-equipped with the main hydronic components
required for the installation: screen filter, water pump,
expansion tank and relief valve.
The water heat exchanger and the hydronic module are
protected against frost down to -20°C, using an electric
resistance heater (standard) and pump cycling. However,
the use of MPG (Mono Propylene Glycol) can effectively
Physical and electrical data
These are the same as for the standard unit except:
30 RBV - units with hydronic module
017/021 Fixed Speed
017/021 Variable Speed
Hydronic module
Expansion tank volume
l
8
8
Maximum water-side operating pressure
kPa
300
300
Pumps
Pump, screen filter, expansion tank, flow switch, relief valve
Power input*
kW
0.82
0.31
Nominal operating current draw*
A
1.60
1.57
Nominal conditions: evaporator entering/leaving water temperature 1 2°C/7°C, outside air temperature 35°C, evaporator fouling factor = 0 m2 K/kW.
Gross performances, not in accordance with EN14511-3:2013. These performances do not take into account the correction for the proportional heating capacity and power input
generated by the water pump to overcome the internal pressure drop in the heat exchanger.
HEATING HEATING
*
Water pump
Typical hydronic circuit diagram
Without the hydronic module 17-21 kW
AIR TREATMENT
With the hydronic module 17-21 kW
Components provided with unit
Water filling system (option)
Expansion tank (option)
Hydronic components
1. Mesh filter
2. On/off valve (water filling - optional)
3. Pressure reducer (water filling - optional)
4. Water drain valve
5. Paddle flow switch
6. Expansion tank
7. Safety valve
8. Pump
9. Temperature sensor
10. Brazed Plate Heat Exchanger
11. Anti-freeze electric heater
12. Temperature sensor
C
A
R
R
I
E
R
2
0
1
System components
13. Pocket for temperature sensor
14. Air purge
15. Flexible connections
16. On/off valve
17. Water flow control valve (factory supplied only with hydronic module option but to be
installed on site)
18. Bypass valve for anti-freeze protection (when, in winter, on/off valve are closed)
19. Mesh filter (mandatory for a unit without hydronic kit)
20. Pressure gauge
21. Water drain valve from the plant
22. Water drain valve from refrigerant – water exchanger
23. Charge valve
24. Buffer tank (if required)
6
/
2
0
1
7
61
CONTROLS
Legend