Installation of BCU, Pump and check valve
Installation of BCU – Boiler Control Unit
•
When installing the BCU, recommended 300mm (minimum) higher than the
appliance to allow for thermosiphoning.
•
Ensure that pump is fitted with 2 sensor tee’s and 2 thermostat’s: One thermostat to
trigger the pump to turn ON at 15
°
C. The other thermostat to turn the pump OFF at
55
°
C allowing a consistent circulation between the appliance and the BCU.
Installation of Pump in Field
•
Note the field pump is recommended to branch off on the flow line above the location
of the sensor tee and BCU, yet below the swing check valve.
•
Pump is to be fitted with isolation ball valve unions to allow the pump to be isolated
for servicing and general maintenance.
•
The correct installation of the pump is to fit the electrical board in a position that it
is not facing below the flow line.
Adjustments on ensuring this is achieved can be found in the operational manual of the
pump.
•
To be installed horizontally.
•
As part of the commissioning, ensure that the pump is correctly bled –
Refer to the
operation manual.
Check Valve
•
Install check valve 200mm below header tank on flow line
•
Ensure that the check valve is after the pump has been teed off
