EU heat pumps
17
6. Directions
6.1 Swimming pool water chemistry
Special attention should be paid to the chemical balance of the pool water. The pool water values should always
stay within the following limits:
Min.
Max.
pH
7.0
7.8
Free chlorine (mg/l)
0.5
1.2
TAC (mg/l)
80
150
Salt (g/l)
8
Important: failure to comply with these limits will invalidate the warranty.
Note: exceeding one or several limits can damage the heat pump beyond repair. Always install water
treatment equipment past the heat pump’s water outlet, especially if the chemicals are automatically
added to the water.
A check-valve should also be installed between the outlet of the heat pump and this equipment in order to
prevent products from flowing back into the heat pump if the filter pump stops.
6.2 Setting the flow switch
The water flow switch is set to 0.14 bar by default. As from this water pressure value, the heat pump will be
able to function. This is the minimum required water pressure for most installations.
This setting may only be modified if the heat pump does not start running despite sufficient water circulation or
if it does not stop when the filter pump stops.
Always make sure that the water filter is clean before adjusting the settings of the flow switch: a dirty filter will
lower the water flow and hamper correct adjustment of the flow switch settings.
Directions:
1.
Check that all valves are opened so that water can run through the heat pump. Start the filter pump.
2.
Start the heat pump.
3.
If the heat pump does not start after the time delay, there might not be enough water circulation. Investigate
and correct contingent circulation problems prior to adjusting the flow switch.
4.
Remove the heat pump’s access panel. The flow switch is located on the lower right.
5.
Turn the screw on the flow switch slowly in anticlockwise direction. Wait for the time delay.
6.
Repeat step 5 until the heat pump starts running.
7.
Once the heat pump is running, stop the filter pump. The heat pump should immediately turn itself off.
8.
If the heat pump does not turn itself off, the screw should be turned clockwise until the heat pump stops.
9.
Check once more if the flow switch functions correctly by turning the filter pump on and off.
