Giatsu VAW 2 Manuel De L'utilisateur Et D'installation page 77

Water loop connection
Please pay attention to the below points when connecting the water loop pipe:
1. Try to reduce the water loop resistance
2. Make sure there is nothing in the pipe and the water loop is smooth, check the pipe carefully
to see if there is any leak, and then pack the pipe with the insulation.
3. Install the one way valve and safety valve in the water circulation system according to
scretch on page 12. The specification of the one way safety value is 0.7Mpa. Make sure the
direction marked on the valve align with the water flow direction.
4. The nominal pipe wide of the field- installed sanitary installations must be selected on the
basis of the available water pressure and the expected pressure drop within the piping
system.
5. The water pipes may be of the flexible type. To prevent corrosion damage, make sure that
the materials used in the piping system are compatible.
6. When installing the pipe-work on the customers' site, any contamination of the piping
system must be avoided.
Water affusion and water emptying
Water Affusion:
If the unit is used for the first time or used again after emptying the tank, please make sure that the
tank is full of water before turning on the power.
Open the cold water inlet and hot water outlet.
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Start the water affusion. When there is water normally flowing out from the hot water outlet, the
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tank is full.
Turn off the hot water outlet valve and water affusion is finished.
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ATTENTION: Operation without water in water tank may result in damage of auxiliary
e-heater!
Water emptying:
If the unit needs cleaning, moving etc, the tank should be emptied.
- Close the cold water inlet
Open the hot water outlet and open the manual valve of drainpipe
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- Start the water emptying.
After emptying, close the manual valve.
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