Electrolux ELECTRONIC BASIC IH 18 Manuale utente

Instantaneous

Water Heater

Instructions for installation and use

IH 18 electronic basic

IH 21 electronic basic

IH 24 electronic basic

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

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.

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.

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.

Wash basin

Shower

Bath basin

Kitchen sink

Hot water flowrate

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.

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

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

ΩΩ

Ωcm.

This appliance complies with the following EC Directives:

Appliance constitution

- 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

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

123

Technical data

*) In addition to the flow pressures of the instantaneous water heater itself, consideration

must be given to the pressure losses in the household pipework.

Model

Type unvented

Nominal capacity l

0,4

Dimensions

Width

Height

Depth

226

469

Weight kg

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

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

Appliance function

The fully electronically controlled ELECTROLUX IH instant water heater is a

pressurised appliance for the supply of one or more tapping points and heats

the water as the latter continuously flows through it. A flowrate sensor switches

on the heating at a flowrate of around 3 l/min and off again at around 2,5 l/min.

The microprocessor controlled electronic system automatically adapts the

heating power with regard for the inlet temperature, the temperature set on the

temperature selector knob, and the water flowrate. The user thus has hot

water available in an energy-saving system giving the exact temperature required

without any time limitation whatever.

The nominal operating pressure is 1 Mpa. If this value is exceeded, a pressure

reducing valve should be provided in the household pipework. A safety valve is

not necessary.

The bare wire resistance heating system has a high efficiency. Its low weight

and extremely low water content also make it suitable for hard, lime-containing

water qualities.

Safety temperature and pressure limiter

In the event of a fault, the inbuilt safety

temperature limiter isolates the appliance from

the mains supply on all contacts.

Before the appliance is switched back on, a

trained engineer must ascertain and eliminate

the cause of the fault (see page 17). Then

carefully press in the contact rocker with a

screwdriver until it audibly engages.

Important! The safety temperature and pressure limiter should never

be adapted or modified in any way!

Important: Don't block up the contact rocker!

Pressurepoint

for screwdriver

Installing the appliance

The appliance should only ever be installed or stored in frost-free

premises.

Dimensioned diagram

1= Quick fastener for appliance mounting

2 = Wall mounting

3 = Upper connection terminal (factory-set)

3a = Lower connection terminal for electrical connection

4 = Upper cable bushing

4a = Lower cable bushing for electrical connection

5 = Cold water connection with strainer insert

6 = Hot water outlet

226

190

100

37,5

395

Appliance installation

Carefully unpack and take out the enclosed pack.

Prepare the appliance for assembly.

Hood dismounting

Press in the engagement lug on the underside of

the appliance from above or from the front with a

screwdriver and take off the hood. Pull out the

connection lead of the temperature set-point

pickup on the electronic system.

The rotational range of the temperature selector

knob can be limited (see page 15).

Wall mounting

Mark out wall-plug holes with the

mounting template supplied,

insert wall-plugs, and screw on

fixing rail (1). Take out threaded

pin (2) from the enclosed pack

and screw in. Then prepare water

connections, mount appliance on

threaded pin and retaining rail,

and fix by turning the quick

fastener (3) one quarter revolution.

Water connection

The water inlet temperature on the cold water connection should be

max. 25°C.

If plastic pipe systems are used as installation material, the pipe

manufacturer must expressly and unreservedly confirm the

applicability and quality of his pipes for this application.

The ELECTROLUX IH electronic can be operated with all pressure fittings

suitable for instantaneous water heater.

Insert connector with shutoff spindle (1) in

cold water connection and double- nipple

(2) in hot water outlet using hemp packing.

The shutoff spindle must point downwards

and the screw slot aligned in the flow

direction of the water. The shutoff unit

must not be used for throttling.

Concealed installation

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