Pahlen Aqua Compact Electric Heater User Manual

Pahlen Aqua Compact Electric Heater

Product Information

The Aqua Compact is an electric heater designed for use in pool equipment. It is available in two versions: the standard version with the Incoloy element and the Titanium version. The standard version is not suitable for use in aggressive water, salt water, or pools with a chlorine machine/salt generator. In such cases, the Aqua Compact Titanium version should be used.

Product description
The Aqua compact electric heater is available from 3 kW to 18 kW, see the type plate on the product. The heater is supplied with built-in safety functions such as an adjustable thermostat (with a temperature range of 0 -45°C), overheating protection (with a maximum breakage temperature of 60°C) and a flow monitor. The casing is made of reinforced thermoplastic (short casing: 3/6/9 kW, long casing: 12/15/18 kW), the heater element is made of Incoloy 825 (or titanium) and the connections are made of PVC. As standard, connections for internal gluing to Ø50 mm PVC pipes are included.

• Option A: connections for internal gluing to Ø1½” PVC pipes.
• Option B: connections with 1½” internal thread.

NOTE: The standard version of the heater (with Incoloy element) is not intended for use in aggressive water, salt water or in pools with a chlorine machine/salt generator. In such contexts, Aqua Compact Titanium is required.

Technical Data

• Minimum flow: 90 l/min
• Maximum flow: 300 l/min
• Voltage: 220-240 V (1-phase), 380-415 V (3-phase) (3-18 kW), 400 V 3-phase (3-18 kW)
• Max. pressure: 2.5 bar (2.5 Pa)
• Max. temperature: 45°C
• Enclosure class: IP45

Rated Power and Power Consumption

Power| Rated power 220-240 V / 380-415 V 50-60 Hz| Power consumption
---|---|---
Standard| Titanium| 230 V, 1-phase| 230 V, 3-phase| 400 V, 3-phase
3 kW| 2.7–3.5 kW| 2.7–3.2 kW| 13 A| 8 A| 5 A
6 kW| 5.4–6.5 kW| 5.4–6.5 kW| 26 A| 15 A| 9 A
9 kW| 8.1–9.7 kW| 8.1–9.7 kW| —| 23 A| 14 A
12 kW| 10.8–13 kW| 10.8–12.9 kW| —| 31 A| 18 A
15 kW| 13.5–16.2 kW| 13.5–16.1 kW| —| 38 A| 22 A
18 kW| 16.2–19.4 kW| 16.2–19.4 kW| —| 46 A| 27 A

Dimensions

Installation in Circulation Systems

1. The water inlet on this appliance must not be connected to the inlet water from any other heating system.
2. This appliance must ALWAYS be installed at least 200 mm below the normal water level, see the installation example.
3. Valves must not be installed so that the flow of water through the heater can be unintentio- nally turned off.
4. The installation must be carried out in such a way that the heater cannot be self-drained in the absence of pool water circulation and air pockets cannot be formed.
5. The heater must be installed on the return line to the pool AFTER a possible filter.
6. If necessary, chlorine, acid or similar should be dosed after the heater in the direction of flow.
7. The flow direction marking on the heater indicates the connections that apply for the inlet and outlet.

Note: Failure to follow the installation instructions will void the product warranty.

Pipe connections are made BEFORE electrical installation. The electric heater should be installed horizontally according to the drawing, so that it is always fully filled with water. Under no circumstances may it be started without being completely filled with water.

• Connections must be made using PVC pipe with at least 200 mm of straight length before and after the heater. The standard version’s connection is glued to PVC pipes with an outside diameter of 50 mm (inside diameter min. 42 mm).
  • Connection A: glued to PVC pipe with outside diameter Ø1½” (inside diameter min 42 mm).
  • Connection B: hose with an inside diameter min. 35 mm is connected and must be clamped to ensure 200 mm straight length before and after the heater.
• Do not install the shut-off valve between the heater and the pool. If a valve is required here, it must be a non-return valve.
• The heater must not be covered, placed close to combustible material or in direct sunlight.
• If the heater is placed against combustible material, a fireproof board or the like must be placed between the heater and combustible material. The board must cover 10 cm outside the heater’s outer dimensions.
• he heater must not be installed in a position that is exposed to the elements and must be protected against the ingress of water.
• If the position of the heater is such that there is a risk of freezing, the installation must be carried out in such a way that the heater can be drained of all water.

Note: Failure to follow the installation instructions invalidates the product warranty.

Installation example pipe

1. Skimmer
2. Inlet
3. Light
4. JetSwim
5. Main drain
6. Pump
7. Filter
8. Electric heater
9. Check valve
10. Drain

NOTE: The electric heater must always be located at least 200 mm below the water surface.

Electrical installation

WARNING

• The electrical installation may only be carried out by a qualified electrician in accordance with the instructions provided with the heater.
• As electrical installation regulations differ from country to country, contactors, cables, connection components, and enclosures must be selected based on local regulations.
• A main isolator must be installed before all live electrical connections on the heater. This must be an all-pole isolator that satisfies the requirements set out in IEC/EN 60335-1 paragraphs 7.12.2, 22.2 and 24.3.
• Pahlén recommends the installation of a residual current device.
• The heater must be connected according to the wiring diagram below.
• The control voltage is connected: for 230 V 1-phase and 400 V 3-phase to L1 and N, for 230 V 3-phase to L1 and L2.
  • Note: that the control voltage must be fitted with a separate fuse of 5-10 amps for the live electrical connections.
• The heater must be installed in such a way that it cannot be activated unless the circulation pump is in operation (sufficient flow), i.e. the control current to the heater’s contactors must be controlled over the pump’s contactors.
• The voltage to the heater must not fluctuate more than +5% to –10% in relation to the specification of the model and type plate.
• The installation method must be chosen in such a way that the temperature limit is not exceeded for any component at full load.

Minimum requirements for contactors (main isolator) and coupling material

Connection options| 230 V, 1-phase| 230 V, 3-phase| 400 V, 3-phase
---|---|---|---
Isolator poles| 2| 4| 4
Voltage| 240 VAC| 240 VAC| -415 VAC
Power| According to the rating plate| According to the rating plate| According to the rating plate
Current| According to the rating plate| According to the rating plate| According to the rating plate
Temperature| 60ºC| 60ºC| 60ºC**

See the table “Rated power and power consumption”  The temperature the component receives at the installation site at the maximum ambient temperature, but at least +45º and the maximum power output from the heater. The temperature depends on how well ventilated the installation is.

NOTE:   Installed cables are only test cables. These must not be used for connection.

Wiring diagram

Start

1. Fill the pool with water to the right level.
2. Start the pump for pool water circulation.
3. Check that the water circulates as normal in the system and that all air is vented from the system. The heater must be completely water-filled before switching on the power. Only when all air has been vented from the system can the heater be switched on.
4. Functional test the heater by turning the thermostat knob back and forth and check that the thermostat contactor switches and releases. The flow monitor is checked by turning off the flow through the heater with a shut-off valve and check that the contactors release. Turn on the water again. The contactors should then switch on again.
5. Set the desired pool temperature with the thermostat knob.
6. The water is now heated to the desired temperature.

Operation
When backwashing and cleaning the filter, switch off the power to the heater. In the event of a risk of freezing, the power must be switched off and the heater drained of all water.
General info
In order to ensure electric heater works well and has a long-life, it is important that the following recommended values regarding water quality are followed.

• Chlorine content: max 3.5 mg/l (ppm)*

• pH-value: 7.2–7.6

• Alkalinity: 60–120 mg/l (ppm)

• Calcium hardness: 100–300 mg/l (ppm)

• Iron: max 0.1 mg/l (ppm)*

• Copper: max 0.2 mg/l (ppm)*

• Manganese : max 0.2 mg/l (ppm

• Phosphorus: max 0.01 mg/l (ppm)

• Nitrate : max 50 mg/l (ppm)*
  Chloride (salt) content

• Incoloy: max 250 mg/l (ppm)

• Titan: max 35,000 mg/l (ppm)

Troubleshooting

1. Check the fuses.
2. Check that the system has the requisite flow through the heater.
3. For safety reasons, the heater’s overheating protection trips with a lack of water or poor circulation. This is the most common reason why the heater “stops working”. Check whether the overheating protection has tripped, investigate the cause. After the cause has been established and rectified, the overheating protection is reset by
   • Unscrewing the protective cap (A).
   • Press in the reset button (B) on the junction box.
   • Refit the protective cap again.
4. Check the operation of the heater, see point 4 under “Start”.
5. Reset the thermostat to a higher temperature.
6. If the problem persists: contact the installer.

Disposal and recycling
You must dispose of this product in accordance with local laws and provisions. Since this product contains electronic components, it must be disposed of separately from household waste. When this product reaches the end of its life cycle, contact your local authorities to find out more about disposal and recycling.

References

• art.no
• Swimming pool equipment - Swedish manufacture Pahlén AB
• Pool & pooler, svensk tillverkning av högsta kvalitet | Pahlen.se

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