Electrolux IH21, IH24, IH 18 User Manual

Instantaneous

IH 18 electronic basic

Water Heater

IH 21 electronic basic IH 24 electronic basic

Instructions for installation and use

Contents Page

Important instructions for the user 3

General 3 Operating the appliance 3 Temperature preselection 3 Hot water flowrate 4 Care and maintenance of the appliance 4

Important instructions for the installer 5 General 5 Appliance constitution 5 Technical data 6 Appliance function 7 Safety temperature limiter 7 Installing the appliance 8 Dimensioned diagram 8 Appliance installation 9 Hood dismounting 9 Wall mounting 9

Water connection 10 Concealed installation 10 Installation versions 11 Cleaning the strainer insert 12 Flowrate limiter 12

Electrical connection 13 Mains connection 13/14 Circuit diagram 14 Temperature selector range limitation 15 Hood assembly 15

Using the appliance for the first time and checking 16 Fault-finding 17 Fault indications 18 Important for the expert 19 Customer service 20

Important instructions for the user

General

- Installation and startup should only ever be performed by an approved installer or authorised installation firm.

- Before using the appliance, please read through these instructions carefully. The manufacturer cannot accept any liability for damage

resulting from failure to follow these instructions.

- Fittings and connecting pipes may get hot. Therefore keep children well

away.

Operating the appliance

The ELECTROLUX IH electronic instantaneous water heater heats the water as the latter continuously flows through it. When the hot water tap is opened, the appliance switches on at a flowrate of around 3 l/min. When the hot water valve is closed or if the flowrate is reduced below 2.5 l/min, the appliance switches itself off again. The appliance is suitable for household use and should only ever be used for heating of drinking water. One or more tapping points can be supplied with hot water.

Temperature preselection

The electronic system allows continuous temperature selection in the range from 30°C to 60°C.

Recommendation for energy-saving operation: 40°C for washbasin, shower, and bath (knob tangibly engages).

55°C for kitchen sink. If this temperature is no longer needed, the appliance should be reset to the 40°C energy-

saving level.

Wash basin Shower Bath basin Kitchen sink

When the appliance is operated with a thermostatic mixer tap, the temperature setting on the instantaneous water heater must be around 8°C higher than

on the thermostatic mixer tap.

Hot water flowrate

Cold

water

tempe

rature

°C

Outlet temperature

40°C

Outlet temperature

55°C

18 kW

l/min

7,6

8,6

(*8)

9,9

(*8)

21 kW

l/min

8,8

(*9)

11,6

(*9)

24 kW

l/min

10,1

11,5

(*10)

13,2

(*10)

18 kW

l/min

5,3

5,7

6,3

21 kW

l/min

6,1

6,7

7,3

24 kW

l/min

7,6

8,4

(*) limited to this figure by the built-in flow limiter

Up to the appliance’s max. power limit, the instantaneous water heater supplies the set hot water temperature regardless of the water flowrate selected.

If the hot water temperature is not attained when the hot water valve is fully opened, more water flows than can be heated by the appliance power. In this case, the hot water tap must be slightly closed.

Because of the different inlet temperatures, the hot water output varies depending on the season. The following outlet flowrates for bath or shower water (40°C) or washbasin/ sink water (55°C) are attained at the inlet temperatures of 6°C, 10°C, and 14°C.

Care and maintenance of the appliance

Clean the plastic housing as necessary with a damp cloth and dilute soap solution. Never use any abrasive, scouring, and solvent-containing detergents. The instantaneous water heater generally needs no maintenance. Regular inspection of the appliance by a trained engineer will ensure its operational reliability and prolong its service life. Scale deposits in the outlet of fittings reduce the water flowrate. The air bubblers of the fittings or hand shower head must therefore be cleaned from time to time.

Important instructions for the installer General

The instantaneous water heater is manufactured and tested in conformity with the valid IEC specifications and DIN standards. The appliance complies with the Appliance Safety Act. The indications given on the rating plate, the technical connection specifications of the electricity and water companies in the geographical area concerned, and VDE 0100 and DIN 1988 must be observed when the appliance is being installed.

The specific resistance of the water at the installation site should not be less than 1100

ΩΩ

Ωcm.

ΩΩ

This appliance complies with the following EC Directives:

- the ”Low-Voltage Directive” 72/23/EEC of 19.02.1973, including Amendment Directive 93/68/EEC

- the”Electromagnetic Compatibility” Directive 89/336/EEC of

03.05.1989 including Amendment Directive 92/31/EEC

Appliance constitution

1 = Back wall 2 = Quick fastener for appliance

mounting 3 = Upper cable bushing 3a = Lower cable bushing 4 = Upper mains connection

terminal (factory-prefitted) 5 = Flowrate sensor 6 = Safety temperature and

pressure limiter 7 = Electronic module 8 = Temperature selector knob 9 = Flowrate limiter 10 =Strainer insert 11 = Cold water connection 12 =Hot water connection 13 =Thermostat 14 =Heating block

Technical data

Model

Type unvented

Nominal capacity

0,4

Dimensions Width Height Depth

226

469

Weight

3,9

Nominal overpressure

Mpa

Protection class to VDE

Protection type to VDE

IP 25 (splash-water protected)

Test mark

See rating plate

Water connection

G 1/2 A

Electrical connection

3 / PE ~ 380 V

Nominal output

kW1821

Spec. water resistance at 15 °C

Ohm cm

> 1100

Switch-on flow pressure*)

Mpa

0,035

Switch-on flowrate

l/min

Mains retroactive effect

Free from any mains retroactive effect

to DIN EN 60555/VDE 0838

VDEW Approval

Maximum inlet temperature

°C

25 °C

IH E

24 basis

IH E

21basis

IH E

18 basis

Flowrate limitation l/min 8 9 10

0,04

0,03

*) In addition to the flow pressures of the instantaneous water heater itself, consideration must be given to the pressure losses in the household pipework.

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