Operating instructions
13
912.808.1 - IT
INSTALLATION AND OPERATING MANUAL
Models R/1
These models are tted with a balancing valve (gure 5). This device is used to balance the ow of water circulating in the
single module in case of non-optimal distribution in the inlet pipes.
Figure 4 shows the Flow Rate – Pressure Drop curve with balancing valve in the wide open position.
Models RS
These models are tted with two balancing devices.
The rst device (balancing valve: Figure 5) is used to balance the ow of water circulating in the single module in case of
non-optimal distribution in the inlet pipes. With this device, the flow rate must not fall below 1000 l/h in the domestic
water mode (lower ow rates do not assure sufcient domestic water performance).
The second device (positioned in the brass hydraulic body: Figure 6) must be used if a further pressure drop increase is
required (this device only acts on the heating circuit and does not affect domestic water ow).
The circulating ow rate value is shown on the heat meter display (see §17).
Figure 4 shows the Flow Rate – Pressure Drop curve with balancing valve in the wide open position.
Items in the SIRIUS SAT user module pack.
r 4DSFXTBOEFYQBOTJPOHSJQTNN
r 5BQ(cuVTFSNPEVMFJOMFU
r 5BQ(cuSFUVSOUPDFOUSBMJTFEQMBOU
r 5BQ(cuIFBUJOHQMBOUEFMJWFSZGPSEVBM[POFNPEFMT
r 5BQ(cuIFBUJOHQMBOUSFUVSOGPSEVBM[POFNPEFMT
r 5BQ(cuEPNFTUJDXBUFSJOMFUNPEFMTXJUIEPNFTUJDIPUXBUFSQSPEVDUJPO
r 5BQ(cuEPNFTUJDIPUXBUFSPVUMFUNPEFMTXJUIEPNFTUJDIPUXBUFSQSPEVDUJPO
r 4FBMT
r 5FMFTDPQJDKPJOUT
6. FLOW RATE/PRESSURE DROP CHARACTERISTICS (models without pump: R/1 – RS)
Figure 4: Flow Rate – Pressure Drop curves (models without Pump)
0902_0806
PRESSURE DROP IN HEATING CIRCUIT
WATER FLOW RATE (l/h)
PRESSURE DROP [kPa]