Pahlen Maxi Heat Manual Download

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Pahlén AB, Box 728, SE-194 27 Upplands Väsby, Sweden

Tel. +46 8 594 110 50, Fax +46 8 590 868 80, e-mail: info@pahlen.se, www.pahlen.com

Electric heater Maxi Heat Digital

MA45-17E

201

Installation instruction

Start up

1. Check all electrical and plumbing installations and switch on the fuses.

2. Open all valves except the drain valves and fill the system with water.

If the water level in the swimming pool is below the heater, fill the pool and, leaving the heater OFF, turn on the system pump

to fill the system. If a bypass is installed in the system, open the bypass valve half-way. Make the final adjustment later.

3. Start the pump.

4. Energize the heater.

Setting the temperature

1. Switch on the power to the heater.

2. Set the required pool temperature in °C by using the blue or red

arrow key. Red = temp up, blue = temp down.

3. After 5 seconds the display shifts from showing the required

temperature to show the actual pool temperature.

The indicator lights on the control panel of the heater now show

that the heating elements are operating.

When correct pool temperature is reached, the heating elements

shut off in intervals.

The heater remember the latest required temperature even if the power supply is switched off.

Water flow/bypass adjustment

The water flow rate can be adjusted by use of an external bypass valve and a thermometer. The bypass valve is adjusted

using the water temperature difference (rise) through the heater as indicated by the thermometer at the heater outlet.

1. Turn on the pump and allow it to run for 5 minutes, then read the water temperature on the thermometer.

2. Set the electronic thermostat to call for heat, run for 5 minutes and again read the temperature on the thermometer.

To prevent tampering and possible operational problems or damage to the heater, it is recommended that the bypass valve

handle is removed.

Maintenance

Note that the heater functions only when the circulation pump is running and the water is circulating. It will not heat when the

filter pump is off or the temperature control is not calling for heat.
In hard water areas, lime can accumulate in the tank and on the heating element. Tank and element should be inspected

periodically and scale removed when necessary.
If the water in the system stands still for a longer period, drain the heater. Always turn off the heater and disconnect the main

fuses before draining the heater. Close both the inlet valve and bypass valve and open the drain plugg on the heater.

The heater contains about 15 liters of water. If vacuum occurs, loosen the outlet connection a little to make sure of total draining

of the heater.
If the swimming pool system is subject to sub-zero temperatures, turn off the power to the heater and the pump and drain the

entire system. Open the drain plug, placed on the side of the heater. The system drain valve must be left open until it is time to

start up the swimming pool again.

When back-washing and cleaning the filter, the power to the heater must be turned off.

When technical problems occur

The display shows an error code. Contact your installer.

Error codes

Code Cause

Measure

Flow switch