- Open the springs securing the water pipes to the heater.1. Undo the nut securing the rigid pipe to the thermostat.2. Loosen the band and disconnect the flexible supply pipe to the heat exchanger from the thermostat.
1. Loosen the band and disconnect the flexible pipe from the water pump rigid return pipe.
1. Remove the duplex rigid supply and return pipe complete with hoses.2. Loosen the bands and disconnect the hoses from the rigid pipe.