Instantaneous |
IH 18 electronic basic |
Water Heater |
IH 21 electronic basic |
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IH 24 electronic basic |
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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 |
2
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.
3
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.
Cold |
Outlet temperature |
Outlet temperature |
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water |
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40°C |
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55°C |
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tempe |
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rature |
18 kW |
21 kW |
24 kW |
18 kW |
21 kW |
24 kW |
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°C |
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l/min |
l/min |
l/min |
l/min |
l/min |
l/min |
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6 |
7,6 |
8,8 |
10,1 |
5,3 |
6,1 |
7 |
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10 |
8,6 |
10 |
11,5 |
5,7 |
6,7 |
7,6 |
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(*8) |
(*9) |
(*10) |
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14 |
9,9 |
11,6 |
13,2 |
6,3 |
7,3 |
8,4 |
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(*8) |
(*9) |
(*10) |
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(*) limited to this figure by the built-in flow limiter
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.
4
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 Ωcm.
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
12 3
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4 |
14 |
5 |
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6 |
4a |
7 |
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13 |
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8 |
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9 |
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10 |
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3a |
11 |
12 |
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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
5
Technical data
Model |
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IH E |
IH E |
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IH E |
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18 basis |
21basis |
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24 basis |
Type |
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unvented |
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Nominal capacity |
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l |
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0,4 |
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Dimensions |
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mm |
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Width |
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226 |
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Height |
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469 |
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Depth |
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99 |
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Weight |
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kg |
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3,9 |
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Nominal overpressure |
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Mpa |
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Protection class to VDE |
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I |
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Protection type to VDE |
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IP 25 (splash-water protected) |
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Test mark |
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See rating plate |
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Water connection |
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G 1/2 A |
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Electrical connection |
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3 / PE ~ 380 V |
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Nominal output |
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kW |
18 |
21 |
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24 |
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Spec. water resistance at |
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Ohm cm |
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> 1100 |
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15 °C |
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Switch-on flow pressure*) |
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Mpa |
0,04 |
0,035 |
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0,03 |
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Switch-on flowrate |
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l/min |
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3 |
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Mains retroactive effect |
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Free from any mains retroactive effect |
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to DIN EN 60555/VDE 0838 |
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VDEW Approval |
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Maximum inlet |
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°C |
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25 °C |
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temperature |
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Flowrate limitation |
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l/min |
8 |
9 |
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10 |
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*) In addition to the flow pressures of the instantaneous water heater itself, consideration must be given to the pressure losses in the household pipework.
6
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