Electrolux IH24E, IH21E, IH18E User manual

Electrolux IH24E, IH21E, IH18E User manual
Instantaneous
Water Heater
IH 18 electronic LCD
IH 21 electronic LCD
IH 24 electronic LCD
Instructions for installation and use
Contents
Page
Important instructions for the user
General
Operating the appliance
Temperature preselection
Hot water flowrate
Care and maintenance of the appliance
3
3
3
3
4
4
Important instructions for the installer
General
Appliance constitution
Technical data
Appliance function
Safety temperature and pressure limiter
Installing the appliance
Dimensioned diagram
Appliance installation
Hood dismounting
Wall mounting
5
5
5
6
7
7
8
8
9
9
9
Water connection
Concealed installation
Installation versions
Cleaning the strainer insert
Flowrate limiter
10
10
11
12
12
Electrical connection
Mains connection
Circuit diagram
Temperature selector range limitation
Hood assembly
13
13/14
14
15
15
Using the appliance for the first time and checking
Fault-finding
Fault indications
Important for the expert
Customer service
16
17
18
19
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).
IH ele ctroni c LCD
55°C for kitchen sink. If this
temperature is no longer needed, the
appliance should be reset to the 40°C
energy-saving level.
CAUTION! When operating with prewarmed water (for example solar-energy
plant) the outlet - temperature could be higher than prefixed in the LCDdisplay.
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.
The built-in automatic flowlimiter limits the flow in such a way that also with
fully opened warm water outlet valve and low cold water inlet temperatures a
shower-fair outlet temperature (approx. 40°C) remains.
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
water
tempe
rature
°C
Outlet temperature
40°C
18 kW
l/min
21 kW
24 kW
l/min
Outlet temperature
55°C
18 kW
21 kW
24 kW
l/min
l/min
l/min
l/min
6
7,6
8,8
10,1
5,3
6,1
7
10
8,6
(*8)
10
(*9)
11,5
(*10)
5,7
6,7
7,6
14
9,9
(*8)
11,6
(*9)
13,2
(*10)
6,3
7,3
8,4
(*) limited to this figure by the built-in flowlimiter
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. Before all work on the equipment the
mains voltage supply must be interrupted.
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
1
2
3
4
5
6
16
7
5a
8
9
15
10
11
12
14
4a
13
5
1 = Back wall
2 = Thermal sensor
3 = Quick fastener for appliance
mounting
4 = Upper cable bushing
4a = Lower cable bushing
5 = Upper mains connection
terminal (factory-prefitted)
5a = Lower mains connection
terminal (transpose mains
connection terminal)
6 = Flowrate sensor
7 = Safety temperature and
pressure limiter
8 = Electronic module
9 = Temperature Display
10 = Temperature selector knob
11 = Flowrate limiter
12 = Strainer insert, connection
for direct tapping fitting
13 = Cold water connection
14 = Hot water connection
15 = Thermostat
16 = Heating block
Technical data
IH E
18 LCD
Model
0,4
Liters
Dimensions
Width
Height
Depth
mm
Weight
kg
Nominal overpressure
IH E
24 LCD
unvented
Type
Nominal capacity
IH E
21 LCD
226
469
95
3,9
1 (10)
Mpa (bar)
Protection class to VDE
I
Protection type to VDE
IP 25 (splash-water protected)
See rating plate
Test mark
G 1/2 A
Water connection
Electrical connection
Nominal output
3 / PE ~ 380 V
18
kW
21
> 1100
Spec. water resistance at
Ohm cm
15 °C
Switch-on flow pressure*)
Switch-on flowrate
24
0.04 (0,4)
0.035 (0,35)
0.03 (0,3)
3
l/min
Free from any mains retroactive effect
to DIN EN 60555/VDE 0838
VDEW Approval
Mains retroactive effect
Maximum inlet
temperature
°C
Flowrate limitation
l/min
< 70 (power engagement up to 45 °C)
8
9
10
*) 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
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 1MPa. 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 and pressure 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: Don't block up the contact rocker!
Pressurepoint
for screwdriver
Important! The safety temperature and pressure limiter should never
be adapted or modified in any way!
7
Installing the appliance
The appliance should only ever be installed or stored in frost-free
premises.
Dimensioned diagram
226
190
1
2
3
4
21
469
293
395
4a
37,5
1
2
3
3a
4
4a
5
6
=
=
=
=
=
=
=
=
6
100
5
30
3a
5
95
Quick fastener for appliance mounting
Wall mounting
Upper connection terminal (factory-set)
Lower connection terminal for electrical connection
Upper cable bushing
Lower cable bushing for electrical connection
Cold water connection with strainer insert
Hot water outlet
8
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
3
2
1
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.
9
Water connection
The water inlet temperature on the cold water connection should be
max. 70°C. Upwards of 45°C, the appliance system is arranged not to
apply any more heating power.
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.
Concealed installation
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.
The ELECTROLUX IH electronic can be operated with all pressure fittings
suitable for instantaneous water heater.
10
Installation versions
For fittings directly on the appliance, the bushing openings pre-embossed in
the appliance hood must be cut out for the extension pipes of the fitting. The
supporting sheet (1) enclosed with the fitting fixes the extension pipes in
position and seals the housing openings. To ensure moisture protection,
the supporting sheet must be fitted.
2
1
3
4
Fitting must be vertically seated and centrally
under the appliance. Seal appliance
connection to the wall, where necessary, with
G 1/2 A blind plugs (2) (fitting accessory).
If a cold water supply is made to the
appliance, the shutoff adapter (3) should be
replaced by an adapter with a wood screw
(4) for fixing the fitting in place.
The following tapping fittings are suitable:
D 169 - Special mixer tap with swivelling outlet
D 159 - Special shower mixer tap
D 149 - Special bath mixer tap with change-over tub/shower
Important! After completion of the water installation, the appliance
should be thoroughly flushed with cold water (open the hot water valve).
The strainer insert may possibly need cleaning afterwards.
11
Cleaning the strainer insert
If the water flowrate is reduced by dirt from the cold water line, the strainerinsert should be cleaned as follows:
− Shut off cold water on shutoff unit (1)
− Loosen cap nut (2 ) using a spanner
− Take out and clean strainer (3)
− Re-assemble in reverse sequence
− Open cold water on shutoff unit (1); check
tightness
1
3
2
Flow rate limiter
1
2
The flow rate limiter (2) is installed in the cold
water connector (1) to allow a constant outlet
temperature at high flow pressures of approx. 40° C,
suitable for showering.
(See table page 4 and 6)
12
Electrical connection
The electrical connection should only ever be made after the water is
connected! The appliance is only suitable for a fixed connection of
380 V 3 ~ (three-phase current) .
The appliance must be connected to the protective conductor.
Important note: The wiring must be arranged so that the appliance can be
de-energised (disconnected from the electricity supply) before any
intervention involving the fuses being unscrewed, the automatic safety
devices being switched off, or similar measures being taken (isolating gap
width of at least 3 mm).
Mains connection lead
The connection cable must project from the wall
over an insulated length of at least 20 mm.
20
150
Mains connection on top
max.10
1
4
2
3
Electrical connection terminal (3)
factory-prefitted.
Cut out cable inlet opening (1).
Slide flexible inlet bush (2) over
connection cable, insert it through the
back wall opening, and screw fixing
strap under connection terminal (4).
13
Mains connection underneath (alternative)
For this connection
version, transpose the
mains connection terminal
2
(1) from top to bottom.
Note the terminal
designation on the back
wall, and do not cross
the connection leads to
3
the safety temperature
limiter.
Carry out cable inlet opening
(2), inlet bush (3), and bush fixing under the mains connection terminal as
described above for mains connection.
Important! Moisture protection is only guaranteed with the inlet bush
fitted in position.
1
Circuit diagram
L1(R)
L2(S)
L3(T)
PE
Heating block
Heizblock
4
W4
3
2
W3
1
W2
5
W1
K
Main connection terminal
D
S
Safetytemperature
and pressure
limiter
4
L1
5
LCD
1
LED
12
3
IN
S2
L2
L3
2
Electronic
Elektronik
system
14
Temperature selector range limitation
The maximum temperature able to be set can be limited to 40°C or 45°C.
Important! Before dismantling, set the knob to the minimum
temperature of 30°C.
Detach the temperatur set-point pickup (2) in the appliance hood. Turn the
setting dial (3) so that the printed set-point coincides with the hood mark (1).
Do not twist the selector axis and plate of the temperature set-point
pickup when reassembling!
Hood dismounting
IN
Plug the connection lead of the
temperature set-point pickup into the
electronic system, suspend the
appliance hood in the upper edge of the
back wall, and swivel it downwards until
it audibly engages.
If necessary, the hood can be supplimentarily fixed with a screw next to
the engagement lug.
15
Using the appliance for the first time and checking
The unit must be installed and started up by an approved firm of installers
which accepts liability for safety and proper function.
Before the appliance is energised (connected to the electricity supply),
it should be thoroughly flushed with cold water and the tightness of the screwed
joints checked.
After the instantaneous water heater is energised (connected to the
electricity supply), it should be inspected by a trained engineer to
ensure that it is in proper working order. For protection of the heating
systems, the system is arranged for a switch-on delay of 5 - 25 s at
initial startup and after the appliance has not been live for any length
of time.
Important: After any work carried out on the water supply unit, the
appliance should also be thoroughly flushed with cold water (vented)
before being switched on again. Only then should the appliance be
reconnected to the electricity supply.
After initial startup, the user should be familiarised with operation of
the appliance and the instructions for installation and use handed
over for safekeeping.
16
Fault-finding (important instructions for the trained engineer)
In the event of any fault, a check should first be made to ascertain
whether the fuse and line protection switch have tripped.
Fault
Cause
Remedy
- Heating system does
not switch on
- Appliance is not live
Check the voltage
- Hot water flowrate too
low
- Strainer insert is
clogged
Clean strainer insert (see
page 12)
- Soiling or scaling of
bubblers and shower
heads
Dismantle and clean the
bubblers and showers
heads
- Defective heating
system
Inspection and repair only
by the trained engineer
- Inadmissibly high cold
- Safety temperature
and pressure limiter has water inlet temperature (over 70 °C)
tripped
- Active fault indicator
(LED)
Appliance should not be
operated with preheated
water over 70 °C
- Inadmissibly high
outlet temperature
(over 70 °C)
Inspection and repair only
by the trained engineer
- System fault (see
table on page 18)
Inspection and repair only
by the trained engineer
17
Fault indications
Fault
pattern
1
Idicator
LED 1
Possible faults
LED 2
No display
Appliance does
not work
- Flowrate sensor not plugged
Defective
- L1 or L3 phase missing
No display
Hot water temperature
too low
2
3
4
- L2 phase missing
FLASHES FLASHES
long
short
Constant
warm water temp.37°C
- Setpoint generator not fitted
FLASHES FLASHES
short
long
No correct
degree rgulation
- Temperature sensor not
plugged / Defective
FLASHES FLASHES
long
short
No heat output
- Electronic defective
FLASHES
long
- Outlet temperature > 70°C
OFF
No heat output
5
FLASHES
long
ON
- Inlet temperature > 45°C
No heat output
6
OFF
ON
- Water flow > 20 l/min
18
Important for the expert
The electronic controls the safety-function of the appliance. When a fault is
noticed, the fault indicator (LED) blinks and the heating element is switched
off.
After the fault has been recitified, fault memory will be automatically cancelled.
Instructions for the fault finding see in "Instructions for installation and use"
page 17and 18.
1 2
1 2
Fehleranzeige
Fault indicator
V
19
Customer service
If your appliance has a fault, please contact your customer service centre for
advice.
Electric appliances should only ever be repaired by a trained
electrician, since the user may be seriously endangered by
improper repairs.
A list of the addresses of customer service centres is attached.
If your appliance requires service, you will need to quote these
numbers indicated on the rating plate.
Serial No..
To save enquiries, copy the data from the rating plate and keep them handy.
Subject to change
267791-K33895-8040
EHT Haustechnik GmbH
Gutenstetter Straße 10
D-90449 Nürnberg GERMANY
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