Press on the 'Drain'-button. OR Release the pressure from the boiler by pressing on valve 4 'Flush', the heating element won't heat up the water as we have removed the HEAT-faston from the boiler.
Wait until the pressure is released from the boiler and then switch off the Perfect Moose Jack.
Unscrew the 2 screws from the base plate with an allen key #5 and 1 screw from the structure support and boiler support with a Torx T25 screwdriver. Now it is possible to remove the boiler unit from the Perfect Moose Jack.
Reuse the 6mm pushfit fitting with 1/4" thread and the 8mm push elbow fitting with 1/4" thread. Screw both the fittings on the new drain valve with a max force of 3.5Nm and place back on the boiler.
Screw the 2 screws in the boiler support on the side of the boiler with an allen key #5.
Place the boiler unit back on the Perfect Moose Jack. Screw the 2 screws on the base plate with an allen key #5 and 1 screw on the structure support and boiler support with a Torx T25 screwdriver. Be careful to not squash the cables between the boiler support and structure support.