Technical data

22
5.16 FILLING POINT
The system is filled with heat transfer fluid, this is pumped into the system
via a filling point. The pump group has dedicated filling points - see fig.
5.16A.
Alternatively a filling point can be created at any low level part of the system
using an appropriate non return valve and shut-off valve arrangement.
FIG. 5.16A PRESSURE RELIEF VALVE
Filling Point
Alternative Filling
Point (return)
FIG. 5.17A FLOW ADJUSTMENT
5.17 FLOW REGULATOR
The flow regulator controls the flow rate at which the heat transfer fluid is
circulated in the system.
To adjust the flow, turn the adjusting screw.
The flow rate should be set to suit the number of collectors, the cylnder’s
heat exchanger surface area and specific installation requirements.
Recommended settings when using Ariston Primo Twin cylinder are:-
2 Collector system 0.5 to 1.7 l/min
3 Collector system 0.5 to 2.6 l/min
Flow Regulator
Adjusting Screw
Flow Setting Litres/min