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4-13 Trial Run - Auto Feeder Process.
1. Turn on the power to the control panel.
2. Automatic water replenishment in progress when the Combi Boiler is less than the internal pressure 12psi.
1) When the Combi Boiler’s water pressure is below of a certain point, then the 3-Way Valve will be switched to the plate
heat exchanger and add water.
2) When the water lling is nished, then the 3-Way Valve will be switched to heating supply pipe and proceed to add water
to increase the pressure on the heating loop.
3) If the water adding is done up to a certain pressure within the heating pipe, then the circulation pump will operate in order to
add water in the heating pipe.
4) When the heating loop reaches the set pressure, then the 3-Way Valve will switch to the plate heat exchanger and
re-check the water pressure. After, the 3-Way Valve will re-check the heating loop.
5) Repeat the operation and stop processes of the circulation pump of the 1st 5 minutes of the heating loop air purge.
6) Repeat the operation and stop processes of the circulation pump of the 2nd 10 minutes of the heating loop air purge.
Then, stop the trial run.
Trial Run
Chapter4.–Installation
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