Technical data

23
Primary Circuit Pump
Purewell VariHeat Boilers
Pumps for circulation through the boilers should be sized according to the flow rate
and pressure loss requirements for a boiler, or group of boilers, and associated local pipework.
For details of flow rate requirements and boiler pressure loss, please refer to data tables on pages 6 and 7.
Hamworthy Heating is the exclusive distributor of Biral pumps in the UK. With a wide range of models available,
you can closely match pump performance to suit your requirements.
The high quality design with innovative features include:
n Unique Can system – no seals to leak
n Low, medium and high speed ranges
n High torque starting
n Ultra low power consumption
n Flat performance curves – less system noise
n Operating pressures up to 16 bar
n Temperatures from -20°C to 140°C
n Whisper quiet pump operation
Matched Biral Pumps for 20°C ∆t Primary Circuit - Condensing Purewell VariHeat Boilers
Model
Number of Boliers
1 2 3 4
PV 70c MX12-3 LX323-2 LX326 or LX402* LX403
PV 95c MX13-3 LX325 or LX401* LX403 LX503
PV 110c LX323 or LX401* LX326 or LX402* LX503 LX504
PV 140c LX402 LX503 LX652 LX653
PV 180c LX403 LX504 LX653 LX654
Matched Biral Pumps for 11°C ∆t Primary Circuit - Condensing Purewell VariHeat Boilers
Model
Number of Boliers
1 2 3 4
PV 70c M14-2 LX403 LX504 LX653
PV 95c LX326 - LX402* LX504 LX653 LX654
PV 110c LX503 LX653 L LX654 LX655
PV 140c HX402-1 HX502-1 L804 or HX652* L805 or HX802*
PV 180c HX502-1 HX652 HX802 L1003
Matched Biral Pumps for 11°C ∆t Primary Circuit - Non Condensing Purewell VariHeat Boilers
Model
Number of Boliers
1 2 3 4
PV 65he LX322-2 LX326 or LX401* LX503 LX652
PV 85he LX323-2 LX403 LX652 LX652
PV 105he LX403 LX504 LX653 LX654 or LX802*
PV 125he LX503 LX653 LX654 or LX802* LX803
Matched Biral Pumps for 15°C ∆t Primary Circuit - Non Condensing Purewell VariHeat Boilers
Model
Number of Boliers
1 2 3 4
PV 65he LX321-2 LX325 LX326 or LX402* LX503 or LX652*
PV 85he LX323-2 LX326 LX503 LX652
PV 105he LX323-2 LX403 LX504 or LX652* LX652
PV 125he LX502 LX503 LX653 LX653 or LX802*
* Matched pump selection depends on installation pipe size. Contact our technical department on 01202 662379 for guidance.