Pahlen MidiHeat EHA Gebrauchsanleitung Seite 12

MidiHeat EHA
Starting up
Start
1. Check the electrical connections and pipe routing. Turn on all external fuses.
2. Open all the valves except the drain valve and fill the system with water.
- If the water level in the pool is lower than the heater, fill the pool with the heater turned off (switch in position O) and start
the system pump to fill the system with water.
- If the system has a by-pass, open the by-pass valve half way. Make final adjustments later.
3. Start the pump.
Temperature setting
4. Turn the switch on the electrical heater ON.
5. Set the desired pool temperature (°C) by turning the thermostat knob.
6. If the flow of water is correct and the pool water temperature is lower than the setting, immersion heaters 1 and 2 will start
with approx 20 seconds delay to heat the water and the green "operating" lamp will light up. If the electrical heater has more
than two immersion heaters, no.3 will start after an additional 5 seconds and no.4 approx 5 seconds after that. This is to
avoid overloading the power supply.
7. Check that water temperature in the pool after a while and make any fine adjustments to the thermostat.
Water flow/Bypass adjustment
The water flow is adjusted using a valve (item 22, figure 2) on the by-pass.
Adjust the by-pass valve so that the flow through the electrical heater is between 170–300 l/min. To prevent unauthorized
adjustment, operating problems or damage to the electrical heater, we recommend that the handle of the by-pass valve is
removed once final adjustment has been made.
Maintenance
Note that the electrical heater only operates when the water in the system is circulating. It should not operate if the circulation
pump is turned off or if the desired temperature has been reached.
If the water in the system is stationary for more than a week, the electrical heater should be drained of water.
If there is a risk of freezing, the power to the electrical heater and cirkulation pump must be turned off and the electrical heater
and remainder of the system drained of water.
Open the system drain valve and let it remain open until it is time to start up the pool again.
When reverse flushing and cleaning the pool system's filter, the electrical heater must be turned off.
In areas of very hard water, the immersion heaters can accumulate a coating of calcium after a long time, which reduces the
power of the electrical heater and the life of the immersion heaters. In such cases, contact an authorized electrician who can
perform a regular inspection of the immersion heaters and remove any such coating when necessary.
Draining the heater
1. Turn off the electrical heater and turn off the main switch before draining.
2. Close the shut-off valve (item 12 figure 2).
3. Open the draining valve (item 13 figure 2).
4. Undo the electrical heater's outlet connection (marked with a red arrow) a little to let air in. The electrical heater contains
approx. 15 litres of water. Make sure that all water has drained out.
5. Re-tighten the electrical heater outlet connection again once the heater is fully drained.
6. Close the draining valve.
With reservation for printing errors. We reserve the right to alter the technical specification and product range. Colour deviations may occur due
to printing techniques.
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ENGLISH