Procedure

1. Drain the system. If possible power flush the system, if not simple draining will suffice.
2. Connect the primary flow from the boiler to the connection on the side of the Tadpole.
3. Connect the outgoing primary flow to the pump to the bottom of the Tadpole.
4. Connect the automatic air vent to the top of the unit. Remove the protective cap
5. Re-commission the heating system following the boiler manufacturer’s instructions.

1. Once the system has been checked for leaks and re-commissioned, heat up time should be shorter and the heating system should get much hotter from the same boiler setting. It may be advisable to reduce the setting of the main boiler thermostat.
2. Once the system has reached set point and has been running for about 20 minutes, it may be noted that the circulation pump will be running more quietly. This is due to the reduction of dissolved air in the system.
3. Tap water, which is the original source of the primary circuit, contains roughly 2.5% dissolved air. In heating systems some of this air is driven out simply through a rise in temperature, but not all. This is why corrosion inhibitors need to be added, to protect the radiators from corrosion. The Tadpole reduces the risk of system corrosion and therefore reduces the need to add inhibitors. If the boiler is under warranty, even though the inhibitor is not needed it is necessary to add an inhibitor or the manufacturer may not honour the warranty in case of any future fault with the boiler.
4. We advise leaving the filling loop connected as when all the air is driven out of the system water volume reduces by approximately 2.5 litres. Leaving the filling loop connected for a couple of days will ensure that the system is 100% full and working at maximum efficiency.