AEG EWH 30 Universal EL: 1. Operating and installation instructions

For the user and tter

1. Operating and installation instructions

Keep these instructions in a safe place. Hand them over to the new owner if the appliance changes

hands. Make them available to the tter when any maintenance work or repairs are carried out.

2. Installation

ENGLISH

2.1 Wall mounting

Fit the EWH Comfort / Comfort N wall-mounted storage water heaters in a frost-proof room next to

the connection point.

The materials used to mount the appliance must be selected according to the strength of the wall.

The combined weight of the storage water heaters and their water lling (see the table „Technical

specications“) must be taken into consideration.

The position of the screws required for installation is shown in Figure 3.

The mounting brackets for installation are an integral part of the storage water heater.

The water heaters are only suitable for vertical wall mounting. The water connections must point

downwards.

2.2 Water connection

The appliance must be connected to the water system by an authorised specialist technician,

taking the applicable installation instructions and the relevant standards and regulations into

consideration.

The water connection is unvented (pressure-proof) to supply several drawing points.

The wall-mounted storage water heater is suitable for connection to plastic pipe systems.

Information on connecting to plastic pipe systems: In the event of malfunctions, temperatures of up

to 95 °C (max. 0.6 MPa) can occur. Any plastic pipes used must be designed for these conditions.

If the water pressure is higher than 5 bar, a pressure reducer must be tted in the cold-water

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supply line.

Caution: The appliance is under pressure. During the heating process, expansion water will

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drip from the safety valve. If water continues to drip when heating is completed, please inform

your contractor.

Before connecting the storage water heater to the water pipe, rinse out the pipe thoroughly to

prevent any foreign objects from entering the storage water heater or the safety components.

It is recommended to install the storage water heater in the way shown in Figure 4.

The storage water heater must always be installed together with an approved diaphragm

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safety valve.

The safety information given in the installation instructions for the diaphragm safety valve must be

observed. Regularly check the function of the safety valve.

The safety valve protects the storage water heater from excessive increases in pressure. The

EWH Comfort wall-mounted storage water heaters are tted with a safety valve without non-return

valve as an accessory. The EWH Comfort N wall-mounted storage water heaters are tted with a

safety valve with non-return valve as an accessory. The safety valve must be actuated at regular

intervals to prevent it from jamming as a result of furring (lime deposits).

The dripping-water outlet of the safety valve must always remain open to the atmosphere.

The dripping-water outlet must be connected to a downward-pointing drain pipe which ensures

unobstructed drainage of the water.

Filling: After connecting the storage water heater, open the stop valve.

Then open the hot-water tap. The storage water heater is full when water is discharged from the

hot-water tap.

Then close the outlet tap and check the system for leaks.

Never connect the storage water heater to the electrical power supply without rst checking

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whether the storage water heater is actually lled with water.

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For the tter

2.3 Electrical connection 

1 Terminal strip 6 Switch for full/half power

2 High limit safety cut-out 7 Anode

3 Thermostat 8 DHW cylinder

4 Glow lamp 9 Flange

5 Heating element R Resistor (560 Ohm)

The appliance must be connected to the power supply taking the applicable installation instructions

and the relevant standards and regulations into consideration. It is particularly important to

observe the “Regulations for installing high-voltage systems with rated voltages up to 1000 V” and

regulations from the local power supply company. The appliances are only designed for permanent

connection to a 230 V ~ AC network. A contact gap of at least 3 mm (e.g. fuse) along the supply cable

must be provided for all poles at the installation location.

Electrical connection should be carried out by an authorised tter only.

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The storage water heater has a connecting cable (length approx. 1.00 m). The connecting cable must

be connected or replaced by an approved contractor.

When delivered, the PSH

Comfort / Comfort N wall-mounted storage water heaters are wired in the

way shown in circuit diagram 2.

2.4 Putting into operation

The specialist technician must monitor the appliance when it is put into operation and heats water

for the rst time.

The water temperature can be adjusted as required (see Figure 1). With low hot-water consumption

or with very hard water, it is recommended to select the energy-saving setting e (approx. 60 °C). The

appliance reheats automatically at certain intervals or when hot water is drawn.

It is only advisable to disconnect the storage water heater from the power supply if it is to remain

unused for a relatively long period of time. Heat loss is minimised by the high-quality heat-insulation

material made of CFC-free polyurethane foam.

If there is a risk of exposure to subzero temperatures, the stop valve must be closed and the storage

water heater then drained via the drain valve at the safety valve.

2.5 Operating panel 

1 Status lamp

2

Switch for full/half power

z

Frost-protection setting

E

Energy-saving setting (approx. 40°C)

e

Energy-saving setting (approx. 60°C)

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Temperature range (approx. 80 °C)

2.6 Maintenance

The outside of the storage water heater does not require any special maintenance. To clean, wipe

using a soft cloth or damp sponge only. Do not use any abrasive agents or aggressive detergents.

Caution! Always fully disconnect the appliance from the power supply before carrying out any

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maintenance work.

To ensure a long service life, it is recommended to have a specialist technician inspect the

anti-corrosion anode (magnesium anode) in the appliance once per year. This check may need to be

carried out more frequently in areas with particularly aggressive water – ask the tter or your local

water supply company for information.

The appliance is protected against overheating by a high limit safety cut-out which interrupts all

phases. If the high limit safety cut-out has been triggered, an authorised specialist technician is

required to carry out the repair work. After triggering, the High limit safety cut-out can be reset by

pressing the button (marked Safety) under the switchbox cover.

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