9 Commisioning
Before commissioning the system, first check the following items:
•
Correct installation of piping, wiring, and ducts
•
Efficient drainpipe open to air
•
Appropriate insulation protection
•
Correct earthing
•
Correct power supply
•
No obstacle outside/or inside the air inlet or outlet
•
No air in the water piping and all shut-off valves opened
•
Sufficient inlet water pressure (≥1.5 bar)
To commision this unit, follow the steps below:
Caution! Operation without water in water
tank may result in damage of auxiliary e-
heater. Due to such damage, the warranty is
not valid.
Caution! Water temperatures over 50°C can
cause severe, or even fatal, scalding injuries.
Caution! If the unit is used for the first time or used again after emptying the tank, make sure that the tank
is filled with water before turning on the power.
To fill the tank with water:
1. Open the cool water inlet (1) and hot water outlet (2).
2. When water flows out from the water outlet, the tank is full.
3. Turn off the hot water valve (3).
Start the unit, set the operational mode and temperature settings as described in Operating instructions, Page 1.
Installation, Service and User Manual VMGFK202 – 19
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