German pool DEX User manual

Instantaneous Water Heater
即熱式電熱水器 即热式电热水器
DEX
Printed in Germany WH-DEX-M-10(2)
使用說明書
在使用之前請詳細閱讀「使用說明書」及「保用條例」
，並妥為保存。
在使用之前請詳細閱讀 「使用說明書」及「保用條例」
，並妥為保存。
Please read these instructions and warranty information carefully
before use and keep them handy for future reference.
WH-DEX-M-12(1)
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2
1. Overview
7control panel support
82573
8inlet pipe
82531
12 cold water connection
82074
13
water splash protection
sleeve
in Set 82060
14 grommet
in Set 82180
15 screw-in nipples 1/2”
in Set 82110
9fine filter
82162
10 flow limiter 8 l/min
89110
11 frame
82571
5DEX hood
82502
4non-return valve
82246
3flow sensor
82526
2outlet pipe
82529
1Hot water connection
82085
6wall bracket
82520
When ordering spare parts, please always specify the appliance model and serial number.

3
1. Overview ........................................................................ 2
2. Contents.......................................................................... 3
3. Environment and recycling .............................................. 3
4. Safety instructions ........................................................... 3
5. Description of appliance.................................................. 4
6. Technical specifications .................................................. 4
7. Dimensions...................................................................... 5
8. Installation.................................................................. 5–6
9. Direct connection............................................................. 7
10. Electrical connection (only by a specialist).................. 8–9
11. Initial operation............................................................. 10
12. Cleaning and maintenance ........................................... 10
13. How to use: ........................................................... 11 – 12
Temperature setting....................................................... 11
Programme buttons....................................................... 11
Temperature limitation .................................................. 11
Reset to works setting................................................... 11
How to save energy....................................................... 12
Power limit .................................................................... 12
Operation with solar systems ........................................ 12
Venting after maintenance work ................................... 12
14. Maintenance work......................................................... 13
15. Trouble-shooting and service......................................... 14
16. Quick reference guide.................................................... 15
17. Notes............................................................................. 15
Guarantee terms (in Chinese language)................................. 42
Customer Service Center (in Chinese language)..................... 43
German Pool is very conscious of environmental protection, and this also includes packaging materi-
als. You can care for the environment by carefully segregating waste.
• Thepackagingisessentialtoprotectthecomponentswhilstintransit.Itismadefromenvi-
ronmentally-friendly, re-usable corrugated cardboard.The plastic bags are made of recyclable
polyethylene (PE).
• Theplasticcomponentsoftheappliancearemarkedwithamaterialcodesothattheycanbe
recycled at the end of their useful life. These valuable materials are 100 % recyclable, provided
they are correctly segregated.
2. Contents
3. Environment and recycling
Installation, initial operation and maintenance of this appliance must only be conducted by an authorised professional,
who will then be responsible for adherence to applicable standards and installation regulations.We assume no liability
for any damages caused by failure to observe these instructions. Do not use the appliance until it has been correctly
installed and unless it is in perfect working order.
•The appliance is only suitable for domestic use and similar
applications inside closed, frost-free rooms, and must only be
used to heat incoming water from mains supply.
•The appliance must never be exposed to frost.
•The appliance must be earthed at all times.
•The minimal specific water resistance must not fall below the
value stated on the label.
•The maximum water pressure must not exceed the value on the
label.
•Before commissioning for the first time and each time the
appliance is emptied (e.g. due to work on the plumbing sys-
tem, if there is a risk of freezing or in case of maintenance),
the appliance must be vented correctly in accordance with the
instructions in this manual.
•Do not remove the front cover under any circumstances before
switching off the mains electrical supply to the unit.
•Never make technical modifications, either to the appliance
itself or the electrical leads and water pipes.
•Pay attention to the fact that water temperatures in excess of
approx. 43 °C are perceived as hot, especially by children, and
may cause a feeling of burning. Please note that the fittings
and taps may be very hot when the appliance has been in use
for some time.
•Water inlet temperature must not exceed 70°C.
•In case of malfunction, disconnect the fuses immediately. In
case of leaks, cut off the cold water supply instantly. Repairs
must only be carried out by the customer service department or
an authorised professional.
•This appliance must not be used by any person (including
children) with limited physical, sensorial or mental abilities or
failing experience and/or knowledge unless they are supervised
by a person responsible for their safety or received instructions
about how to use the appliance.Children should be supervised
in order to make sure that they do not play with the appliance.
4. Safety instructions
13 water splash protection
sleeve
in Set 82060
10 flow limiter 8 l/min
89110
11 frame
82571

4
The instantaneous water heater DEX is a microprocessor-controlled, pressure-resistant
water heater for a decentralised water supply to one or more tap connections.
Its electronic control regulates the power consumption depending on the selected
outlet temperature, the respective inlet temperature and the flow rate, thus reaching
the set temperature exactly to the degree and keeping it constant in case of pressure
fluctuations. The required outlet temperature can be entered on a keypad within a range
between 20°C and 60°C and can be read off the digital display.
The maximum inlet temperature can be up to 70°C so that operation in connection with
solar heating systems is possible.
5. Description of appliance
6. Technicalsp ecifications
Model DEX
Article no. 34247
Rated capacity / rated current 16.2 kW..27.0 kW (25A..39A)
Chosen capacity / current 16.2–19.4 kW (25..27A) 19.0–22.6 kW (29..30A) 21.6 –25.8 kW (33..36A) 24.4–27.0 kW (37..39A)
Electrical connection 3/PE 380..415V AC 3/PE 400V AC
Min. required cable size 4,0mm24,0mm26,0mm26,0 mm2
Hot water (l/min) max. at ∆t = 28K
max. at ∆t = 38 K
9,2 1)
6,8
10,7 1)
7,9
12,3 1)
9,0 1) 13,8 1) 10,2 1)
Rated volume 0,4l
Rated pressure Pressure type 1MPa (10bar)
Heating system bare wire heating system IES®
Required spec. water resistance @ 15°C ≥ 1100Ωcm
Specific electrical conductivity ≤ 90mS/m
Inlet temperature ≤ 70°C
Flow rate to switch on – max. flow rate 2,5 – 8,0l/min
Pressure loss 0,2 at 2,5l/min 1,3bar at 9,0l/min
Temperature choice 20°C – 60°C
Weight (when filled with water) 3,70kg
VDE class of protection 1
Type of protection / safety IP25
1) mixed water

5
231
9 7
231
170
466
56
100
32 1
363
7. Dimensions
The following regulations must be observed:
• Installationmustcomplywithallstatutoryregulations,aswellasthoseof
the local electricity and water supply companies.
• Thespecicationsontheratingplate
• Technicalspecications
Installation site
• Appliancemustonlybeinstalledinfrost-freerooms.Neverexposeappliancetofrost.
• TheAppliancemustbewallmountedandhastobeinstalledwithwaterconnectors
downward.
• TheappliancecomplieswithprotectiontypeIP25andmaythereforebeinstalledin
protection zone 1 according to VDE 0100 part 701.
• Inordertoavoidthermallosses,thedistancebetweentheinstantaneouswater
heater and the tapping point should be as small as possible.
• Formaintenancework,ashut-offvalveshouldbeinstalledinthesupplyline.Theap-
pliance must be accessible for maintenance work.
• Copperorsteelconnectingpipesmaybeused.Plasticpipesmayonlybeusedifthey
conform to DIN 16893, Series 2. The hot water pipes must be thermally insulated.
• Thespecicresistanceofthewatermustbeatleast1100Ωcmat15°C.Thespecic
resistance can be asked for with your water distribution company.
Installing the wall bracket
If you install the instantaneous water heater DEX instead of a conventional instantane-
ous water heater, there is generally no need to drill holes for the wall holder. In this case,
you only need to screw in the double nipples (15) as described in 2. and to secure the
wall bracket.
1. Thoroughly rinse the water supply pipes before installation to remove soiling
from the pipes.
2. Using a 12mm hexagon socket screw key, screw the screw-in nipples (15) into the
wall connections. After tightening, the double nipples must protrude by 12 mm.
8. Installation
(15)
Dimensions in mm

6
3. Hold the included mounting template on the wall and align it so that the holes in the
template fit over the connections. Mark the drill holes according to the template and
drill them using a 6mm drill. Insert the included dowels and screw in the wall bracket
(6).
4. Offset tiling or uneven surfaces can be compensated by up to 30mm with the aid of
the spacers supplied. The spacers are fitted between the wall and wall bracket.
Installing connection pieces
1. As shown in the illustration, screw the cold water connection piece (12) with the
union nut and the 1/2“ seal onto the cold water connection.
2. Screw the hot water connection piece (1) with the union nut and the 1/2“ seal onto
the hot water connection.
Installing the appliance
1. To open the appliance hood, take off the faceplate and unscrew the main hood screw.
• When replacing an appliance, the electrical power supply cable may be connected in
the upper part. Only in such case, follow the instructions on page 9 “Electrical con-
nection from above”.
• Slitthegrommet(14)tomatchthecablesize.Theopeninginthegrommetshould
be slightly smaller than the cross-section of the cable in order to ensure optimum
protection against water. Fit the grommet into the opening. The protection grommet
must be used!
• Stripthecableroughly6cmabovethepointwhereitemergesfromthewall.Hold
the prepared appliance so that you can route the cable into the grommet with the
other hand.
2. Place the appliance on the heater bracket (6) so that the threaded rod of the wall
bracket fits in the provided hole of the appliance. If necessary, slight corrections are
possible by carefully bending the threaded rod of the wall bracket. However, it must
be possible to screw on the water connection pipes of the appliance without applying
force.
3. Screw the two 3/8“ union nuts of the appliance‘s water connection pipes, each with
the 3/8“ seal, onto the fittings.
4. Screw the plastic knurled nut onto the threaded rod of the wall bracket.
5. Open the water supply line to the unit and slowly open the shut-off valve (12 c) in
the cold water connection piece (12) (Pos.I). Check all connections for leaks.
6. Next, open and close the hot water tapping valve several times until no more air
emerges from the line and all air has been eliminated from the instantaneous water
heater.
8. Installation
S
(6)
(12 c)
(12)
(1)

7
9. Direct connection
For direct connection, the two 1/2“ screw-in nipples (15) and the
1/2“ seals must be screwed into the 1/2“ union nuts of the hot-
water (1) and cold-water (12) connectors. The two 1/2“ caps of the
side outlets of the hot-water and cold-water (12) connectors must
be removed and screwed onto the open end of the screw-in nipples.
The hot-water and cold-water connectors must then be screwed into
the 3/8“ union nut of the appliance and delivery pipe, together with
the 3/8“ seals.
For direct connection, it is advisable to mount the appliance at a
distance as illustrated alongside, using the spacer sleeves supplied.
It should therefore be noted that the two fixing holes near the lower
pipe connections are also used.
The flared end of the pipes must be screwed into the 1/2“ side
outlets of the hot-water and cold-water connectors with 1/2“ union
nuts and 1/2“ seals.
The holes required for the pipes must then be broken out of the
housing with the aid of a blunt implement.
In case of direct connection please note: Put the strainer into
the cold water connection!

8
10. Electrical connection (only by a specialist)
Please observe:
• TheinstallationmustcomplywithcurrentIECornationallocalregulationsor
any particular regulations, specified by the local electricity supply company
• Observetheratingplateandtechnicalspecicationsonpage4
• Theunitmustbeearthed!
Structural prerequisites
• Theappliancemustbeinstalledviaapermanentconnection.Heatermustbe
earthed! In case of electrical connection from the upper part, a maximum cable size
of 10mm2must be observed.
• Theelectricwiringshouldnotbeinjured.Aftermounting,thewiringmustnotbe
direct accessible.
• Anall-poledisconnectingdevice(e.g.viafuses)withacontactopeningwidthofat
least 3mm per pole should be provided at the installation end.
• Toprotecttheappliance,afuseelementmustbettedwithatrippingcurrentcom-
mensurate with the nominal current of the appliance.
Load shedding relay
If further three-phase appliances are connected, a load shedding relay (82250) can be
connected to phase conductor L2. A special operating mode must be selected on the
appliance for this purpose.
To change the operating mode, press the four keys simultaneously and wait
1 Electronic circuitry
2 Heating element
3 Safety pressure switch and
Safety thermal cut-out
4 Terminal strip
Wiring diagram
LCD Description
0 Normal operation, manufacturer‘s setting
1 Operation with normal load shedding relay
2 Operation with sensitive load shedding relay
until the desired mode (0, 1 or 2) is shown on the display, then release the keys.
Operating mode 1 must be selected first, thus to check the correct operation of the load
shedding relay at low appliance output (35 degree setpoint and low water flow rate).
Mode 2 must be selected if the load shedding relay flickers.
Electrical connection from below
Check that the power supply is switched off prior to electrical connection.
1. Strip approximately 6 cm off the connecting cable above the wall outlet.With the
smaller opening ahead, slide the water splash protection sleeve (13) over the con-
necting cable so that the sleeve is flush with the wall.This prevents any leaking water
from coming into contact with the electrical leads. It must not become damaged! The
protection sleeve must be used!
2. Open the control panel (7) rightwards.
3. Insulate the cables and plug them in the connecting terminals according to the wiring
diagram at the top of this page. The appliance must be earthed.
4. Pull the protective sleeve over the connecting cables until the sleeve fits perfectly in
therecessoftheintermediatepanel.Adjustthewatersplashprotectionsleeveasil-
lustrated. Reinsert the front part of the intermediate panel. Reinsert the control panel
and lock it on the the heating element.
5. Place the hood on the appliance and screw in the fastening screw. After that you can
reinsert the faceplate.
Note: If necessary, the connecting terminal can be displaced to the upper part of the
appliance. If you want to do so, please follow the instructions in the next chapter.
1
3
4
2
(13) (7)

9
10. Electrical connection (only by a specialist)
Electrical connection from above
Check that the power supply is switched off prior to electrical
connection.
1. Open the prepared breaking point (S) in the upper part of the appliance
by pressing with a blunt implement (e.g. srewdriver).
2. Slit the grommet (14) to match the cable size. The opening in the grom-
met should be slightly smaller than the cross-section of the cable in order
to ensure optimum protection against water. Fit the grommet into the
opening. The protection grommet must be used!
3. Strip the cable roughly 6 cm above the point where it emerges from the
wall. Hold the prepared appliance so that you can route the cable into the
grommet with the other hand.
4. Place the appliance on the heater bracket (6) so that the threaded rod of
the wall bracket fits in the provided hole of the appliance.
5. Unscrew the fastening screw of the connecting terminal. Displace the con-
necting terminal to the upper foot. Affix the connecting terminal again.
6. Insulate the cables and plug them in the connecting terminals according
to the wiring diagram on page 8. The appliance must be earthed.
7. Place the hood on the appliance and screw in the fastening screw. After
that you can reinsert the faceplate.
S

10
• Plastic surfaces and fittings should only be wiped with a damp cloth. Do not use
abrasive or chlorine-based cleaning agents or solvents.
• For a good water supply, the outlet fittings (jetregulators and shower heads) should
be unscrewed and cleaned at regular intervals. Every three years, the electrical and
plumbing components should be inspected by an authorised professional in order to
ensure proper functioning and operational safety at all times.
12. Cleaning and maintenance
11. Initial operation
1. Before making the electrical connection, fill the mains and the appliance with water
by carefully opening and closing the hot water tap in order to vent completely. After
every draining (e.g. after work on the plumbing system or following repairs to the
appliance), the heater must be re-vented in this way before starting it up again.
Note “Selection of power rating“
(only by authorised specialist, otherwise lapse of guarantee). Upon first connection of
the appliance to the supply voltage, select the maximum power rating.
Only after having set the power rating, the heater provides its standard operation
mode. The maximum allowable power rating at installation site depends on the local
situation. It is imperative to observe all data shown in the table „Technical specifi-
cations“, in particular the required cable size and fuse protection for the electrical
connection. Moreover, the electrical installation must comply with the statutory regu-
lations of the respective country and those of the local electricity supply company
(Germany: DIN VDE 0100).
2. Switch on the power supply to the appliance. The digital display on the appliance
must light up.
3. When switching on the supply voltage for the first time, the value “18“ flashes in the
display. If not, please carefully read the below note “Reinstallation“.
4. Select the maximum allowable power rating depending on the local situation via the
up and down arrow keys (18kW, 21 kW, 24 kW or 27kW).
5. Press key to confirm the setting. The appliance starts operating.
6. Mark the set power rating on the rating plate.
7. After having set the maximum allowable power rating, the heating element will be
activated after approx. 30 sec of water flow.
8. Open the hot water tap. Check the function of the appliance.
9. Explain the user how the instantaneous water heater works and hand over this
manual.
10. Fill in the guarantee registration card and send it to the German Pool Customer
Service Centre or use the online registration on our website www.germanpool.com.
Note „Reinstallation“
In case the appliance will be commissioned again under different installation conditions
than during its initial operation, it may be necessary to adapt the maximum power rat-
ing.
A temporary short-circuit of the two pins, e.g. with a screwdriver acc. to EN 60900 (see
figure), will reset all heater parameters to works setting and lock the heating. Value
“18“ flashes in the display until the maximum power rating has been selected.This
condition will maintain when activating and deactivating the supply voltage.
®
Multiple Power System:
The rated capacity (max. power consump-
tion) is 27kW/400V and can be changed
internally to 24kW, 21 kW or 18kW.

11
13. How to use
As soon as you open the hot water tap, the instantaneous water heater
switches on automatically. When the tap is closed, the appliance automatically
switches off.
Temperature setting
• Youcansettherequiredtemperaturegraduallytoalowerorhighervaluewiththe
arrow keys and .The temperature changes by 1°C if key is pressed shortly one
time. Pressing a key for a longer time changes the temperature continuously. You can
select the outlet temperature from 20°C to 60°C.
Note: If temperature is set below 20°C with arrow key the display shows “--“
and the appliance switches off the heating function.
Programme buttons
The two programme buttons allow to quickly select the preset temperature. When
pressing a programme key, the preset temperature is selected and displayed.
The factory setting for programme is 35°C and for programme it is 48°C. You
can assign your own settings for the programme keys:
• Prolongedpressingoftheprogrammekeystoresthepreviouslyselectedtemperature.
The display changes from ”P1” or “P2“ to the newly stored temperature value.This
newly set temperature is now available to you each time you press the corresponding
program key.
Temperature limitation
The instantaneous water heater DEX is equipped with an optional temperature limiting
function. This scalding protectionis deactivated in the works setting.
• Switchon:Selectthelimittemperature,thenpress and simultaneously for at
least 3 sec. The display briefly confirms the activation by “HI“.
• Switchoff:pressprogramkeyand simultaneously for at least 3 sec. The dis-
play briefly confirms the deactivation by “– –“.
Note: By activation of the temperature limit also the programme keys are limited.There-
fore, the fixed values of the programme keys must be set again after deactivation of the
temperature limitation.
Reset to works setting
All factory settings can be recalled:
• Press und simultaneously. The display now counts backwards from “10“ to
“00“ in second intervals. The appliance is reset at value “00“ – if you stop pressing
the keys too early, you will cancel the process.
Set temperature
1
–1 °C +1 °C
⍕Ꮢ䃪჆⏗Ꮢ㽙჆
Select preset temperature
A1 A2
B1 B2
䔵᠕各䃐⍕Ꮢ䖤᧳䴼㽙⏗Ꮢ
Scalding protection on
+
Press
1 2
Confirmation
of
activation:
ⷦ㾹ઋࠁ
⶚䃐ߔ
3
✅ףԉ䂣䪷ઋ ☗ѐԉ័ᐬ
≥ 3 sec
ᠵ
Ō⻾䥄
ᠵ
Ō⻾䧋
Store temperature
2
Display of new value
䶛⹦⮰󰩽᪤ը喋ຮ喝Ꮢ喌
᭪⹦⮰󰩽᪜ը喋ຮ喝Ꮢ喌
(e.g. 43 °C)
Set required
設定需要的溫度
（如：43度）
设定需要的温度
(如：43度)
temperature
(e.g. 43 °C)
4 3
1
ٞႄ⏗Ꮢ הႄ⍕Ꮢ
Press
≥ 3 sec
ᠵ
Ō⻾䥄
ᠵ
Ō⻾䧋
+
1
Confirmation
of deactivation
2
Scalding protection off
☗ѐԉ័ڟ䬙✅ףԉ䂣䬈䪵
ⷦ㾹᱖ઋࠁ
⶚䃐᱖ߔ
Press
≥ 3 sec
ᠵ
Ō⻾䥄
ᠵ
Ō⻾䧋
+
Reset
1
Press + hold!
䪣ᠵ
䪫ᠵ
Reset completed
䛹㽙Ⴘ᜼
䛹䃪Ⴘ᜼
3
2
䛹󰩽䃪჆䛹󰩽㽙჆

12
How to save energy
Set the exact temperature you need on the appliance and open the hot water tap. Once
you feel that the water is too hot, do not add any cold water and, instead, enter a lower
temperature on the appliance. If you were to add cold water, the water already heated
would cool down again and valuable energy would be wasted. Moreover, the cold water
added in the tap is not covered by the control range of the electronic circuitry, with the
result that temperature constancy is no longer guaranteed.
Power limit
If the full output of the instantaneous water heater DEX does not suffice to heat the
tapped quantity of water, this will be indicated by the LCD decimal point (e.g. when
opening several taps at once). When you reduce the hot water flow rate, the LCD point
stops indicating because the output of the appliance is again sufficient to reach the set
temperature.
You can use the full output to fill a bathtub, for instance.
Operation with solar systems
When operating with solar systems, e.g. an automatic mixing tap must ensure that the
inlet temperature does not exceed 70°C.
If the inlet temperature is too high as the result of the above reason, the flashing deci-
mal point of the digital display indicates that the unit is not providing any output.
Venting after maintenance work
The instantaneous water heater DEX features an automatic air bubble protection to
prevent it from inadvertently running dry. Nevertheless, the appliance must be vented
before using it for the first time. Each time the appliance is emptied (e.g. after work on
the plumbing system, if there is a risk of frost or following repair work), the appliance
must be re-vented before it is used again.
1. Disconnect the instantaneous water heater from the mains by disactivating the fuses.
2. Unscrewthejetregulatorontheoutletttingandopenthecoldwatertapvalveto
rinseoutthewaterpipeandavoidcontaminatingtheapplianceorthejetregulator.
3. Open and close the hot water tap until no more air emerges from the pipe and all air
has been eliminated from the water heater.
4. Only then should you re-connect the power supply to the instantaneous water heater
andscrewthejetregulatorbackin.
13. How to use
Power limit
⏗Ꮢ䭼ݢ ⍕Ꮢ䭼ݢ
Unit provides no output
☙Ⅰஔ⇍ᰵ䒿ܦ⛝Ⅰஔ↾ᰵ䑤ܦ

13
14. Maintenance work
Maintenance work must only be conducted by an authorised professional.
Cleaning and replacing the filter strainer
The cold water connection of the instantaneous water heater DEX is equipped with an
integrated shut-off valve and a strainer. Soiling of the strainer may reduce the warm
water output. Clean or replace the strainer as follows:
1. De-energize the instantaneous water heater by means of the house fuses and prevent
inadvertent reactivation of them.
2. After opening the hood of the unit, close the shut-off valve (12 c) in the cold water
connection piece (position II).
3. Unscrew the screw plug (12 b) from the cold water connection piece and take out the
strainer (12 a).
4. The strainer can now be cleaned or replaced.
5. After fitting of the strainer tighten the screw plug.
6. Slowly open the shut-off valve in the cold water connection piece (position I).
7. Vent the unit by carefully opening and closing the affiliated warm water tap valve
several times until air no longer emerges from the pipe.
8. Fit the hood of the unit. Then reconnect the voltage to the house fuses.
(12 c)
(12 a)(12 b)

14
Repairs must only be carried out by
authorised professionals.
If a fault in your appliance cannot
be rectified with the aid of this table,
please contact the Central Customer
Service Department at GERMAN
POOL. Please have the details of the
typeplate at hand.
German Pool Customer Service
Room 2-4, Upper G/F,
Newport Centre,
116 Ma Tau Kok Road,Tokwawan,
Kowloon, Hong Kong
Tel: [phone]
Fax: [phone]
Email: [email protected]
Your instantaneous water heater DEX was manufactured conscientiously and checked
several times before delivery. Should malfunctions nevertheless occur, it is usually only
due to a bagatelle. First attempt to switch the house fuses off and on again in order to
reset the electronics. Next, try to remedy the problem with reference to the following
table. In doing so, you will avoid unnecessary expense of customer service assistance.
Problem Cause Solution
Water stays cold,
digital display does
not light up
Main power on/off switch
tripped Switch on the main power again
Display flashes error
message “Er“
Control system has swit-
ched off
Switch fuse off and on. If “Er“
is still flashing contact customer
service
Flow rate of hot water
too weak
Outlet fitting dirty or
calcified
Cleanshowerhead,jetregula-
tor or sieves
Fine filter dirty or calcified Let clean fine filter by customer
service
Selected temperature
is not reached, deci-
mal point lights up
Water flow rate too high Reduce water flow rate at the
outlet
Selected tempera-
ture is not reached,
decimal point does
not light
Cold water has been
added via the tap
Tap hot water only; set tempera-
ture for use
Decimal point flashes Inlet temperature exceed-
ing nominal temperature Reduce inlet temperature
No response upon key
press Hood is not fitted properly Refit the hood properly
15. Trouble-shooting and service

15
17. Notes
Quick Reference Guide
Set temperature
1
–1 °C +1 °C
⍕Ꮢ䃪჆⏗Ꮢ㽙჆
Select preset temperature
A1 A2
B1 B2
䔵᠕各䃐⍕Ꮢ䖤᧳䴼㽙⏗Ꮢ
Scalding protection on
+
Press
1 2
Confirmation
of
activation:
ⷦ㾹ઋࠁ
⶚䃐ߔ
3
✅ףԉ䂣䪷ઋ ☗ѐԉ័ᐬ
≥ 3 sec
ᠵ
Ō⻾䥄
ᠵ
Ō⻾䧋
Store temperature
2
Display of new value
䶛⹦⮰󰩽᪤ը喋ຮ喝Ꮢ喌
᭪⹦⮰󰩽᪜ը喋ຮ喝Ꮢ喌
(e.g. 43 °C)
Set required
設定需要的溫度
（如：43度）
设定需要的温度
(如：43度)
temperature
(e.g. 43 °C)
4 3
1
ٞႄ⏗Ꮢ הႄ⍕Ꮢ
Press
≥ 3 sec
ᠵ
Ō⻾䥄
ᠵ
Ō⻾䧋
+
1
Confirmation
of deactivation
2
Scalding protection off
☗ѐԉ័ڟ䬙✅ףԉ䂣䬈䪵
ⷦ㾹᱖ઋࠁ
⶚䃐᱖ߔ
Press
≥ 3 sec
ᠵ
Ō⻾䥄
ᠵ
Ō⻾䧋
+
Reset
1
Press + hold!
䪣ᠵ
䪫ᠵ
Reset completed
䛹㽙Ⴘ᜼
䛹䃪Ⴘ᜼
3
2
䛹󰩽䃪჆䛹󰩽㽙჆
Power limit
⏗Ꮢ䭼ݢ ⍕Ꮢ䭼ݢ
Unit provides no output
☙Ⅰஔ⇍ᰵ䒿ܦ⛝Ⅰஔ↾ᰵ䑤ܦ
Programme button 1
程式按鈕1
程序按钮1
Programme button 2
程式按鈕2
程序按钮2
Arrow keys up and down
上和下方向鍵
上和下箭头键
16.

16
訂購個別零件時，請註明熱水器型號及機身編號。
1. 概觀圖
7control panel support
82573
8inlet pipe
82531
12 cold water connection
82074
13
water splash protection
sleeve
in Set 82060
9fine filter
82162
10 flow limiter 8 l/min
89110
11 frame
82571
5DEX hood
82502
4non-return valve
82246
3flow sensor
82526
2outlet pipe
82529
1Hot water connection
82085
6wall bracket
82520
外殼
82502
止回閥
82246
流量感應器
82526
出水管
82529
熱水接駁
82085
掛接背板
82520
控制板支架
82573
過濾網
82162
入水閘制
89110
框架
82571
入水管
82531
冷水接駁
82074
濺水保護套
82060
14 grommet
in Set 82180
15 screw-in nipples 1/2”
in Set 82110 電線封蓋
82180
旋入杬牙
82110

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1. 概觀圖 ......................................................................16
2. 內容 .........................................................................17
3. 環保及循環再造 .......................................................17
4. 安全守則 ...................................................................17
5. 本熱水器簡介 ...........................................................18
6. 規格 ...........................................................................18
7. 尺寸 ...........................................................................19
8. 安裝 ....................................................................19 – 20
9. 直接接駁 ...................................................................21
10. 電線接駁 ............................................................21 – 22
11. 初步操作 ...................................................................23
12. 清潔及保養 ...............................................................23
13. 使用指示 ............................................................24 – 26
溫度設定 ...................................................................24
程式按鈕 ...................................................................24
溫度限制 ...................................................................24
重設回出廠前設定 ...................................................24
如何節約能源 ...........................................................25
電量限制 ...................................................................25
與太陽能熱水系統配合操作 ..................................25
保養工作後的排氣程序 ...........................................25
14. 保養 ...........................................................................26
15. 故障處理檢查要點 ...................................................27
16. 快速參考指引 ...........................................................28
17. 備註 ...........................................................................28
保用條款 ...........................................................................42
客戶服務部 .......................................................................43
德國寶注重環保,選用包裝物料方面亦以環保為原則。
- 包裝物料對保護熱水器免於運送途中受損致為重要。選用的物料為
環保可循環再用的紙盒,膠袋亦為可循環再用的PE塑料。
- 塑膠零件如正確分類,可100%循環再用。
2. 內容
3. 環保及循環再造
必需由合格技師安裝,初部操作及保養本熱水器以確保能符合有關安全標準及安裝條例。本公司對
未遵照此規定而引致損失或問題概不負責。
- 本熱水器只適宜用於室內不結霜的環境作家
居用途,並只適宜將自來水加熱。
- 切勿將本熱水器暴露於結霜的環境中。
- 本熱水器必須時刻接地。
- 來水電阻不可低於規格表上列明之數值。
- 最高水壓不可高於規格表上列明之數值。
- 初次試機前及每次需要將熱水器內的儲水排
清時(例如:要進行水喉工程或有結霜可能或維
修保養),需按本說明書內之有關指示,將熱水器
內空氣排出。
- 任何情況下,在關掉電源前,不能打開面蓋。
- 切勿對本熱水器(包括熱水器機體、電線或水
管)作出任何技術性改動。
- 請注意溫度高於43 °C的水會被界定為熱水(對
於小童尤甚),並可引致燙傷。熱水器經使用一
段時間後,水喉配件可能會很熱。
- 入水水溫不可高於70°C。
- 如遇上故障,請即關掉電源。如有漏水,應即關
掉冷水水源。並必須由總代理的合格技師維
修。
- 除有負責其安全的人士監督或收到如何使用
本熱水器指示，否則任何活動能力有限或情
緒、神智有問題的人士不可使用本熱水器。
必需監督兒童以確保兒童不會把玩熱水器。
4. 安全守則

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DEX即熱式熱水器系列,微電腦控制中央系統式,可供應一個或多
個出水位。
電子控制系統按選擇的出水水溫,入水水溫及流量調控達至要求
出水水溫,水壓變動亦能保持水溫穩定。可將所需出水水溫按鍵
盤在20 °C及60 °C範圍內輸入。所選擇的水溫會以數字顯示。
入水水溫可高達70 °C,可配合太陽能熱水系統操作。
5. 本熱水器簡介
6. 規格
型號 DEX
編號 34247
額定功率/ 額定電流 16.2 kW..27 kW (25 A..39 A)
選擇功率/ 電流 16.2–19.4 kW
(25..27 A)
19.0 – 22.6 kW
(29..30 A)
21.6 – 25.8 kW
(33..36 A)
24.4 –27.0 kW
(37..39 A)
接駁電源 3/PE 380..415 V AC 3/PE 400 V AC
最低電線尺寸要求 4,0 mm24,0 mm26,0 mm26,0 mm2
最大熱水量(公升/ 分)
Δt = 28 K
Δt = 38 K
9,21)
6,8
10,7 1)
7,9
12,3 1)
9,0 1)
13,8 1)
10,2 1)
額定容量 0,4 l
額定壓力 額定壓力1 MPa (10 bar)
加熱系統 裸露電阻絲加熱系統IES®
要求來水電阻@15 °C ≥ 1100 Ωcm
導電性能 ≤ 90 mS/m
入水水溫 ≤ 70 °C
要求最低流量-最高流量 2,5 – 8,0 l/min
壓力損失 0,2 bar at 2,5 l/min 1,3≥ bar at 9,0 l/min
溫度選擇 20 °C – 60 °C
水管接駁 G ½”
重量(入水後) 3,70 kg
電擊防護等級 1
防水等級/安全認證 IP25
1) 冷熱水混合

123RC
19
231
9 7
231
170
466
56
100
32 1
363
7. 尺吋
安裝時必需遵守下列指示:
- 當地有關之電線安裝條例及安全標準。
- 電力供應商及水務署之安全條例。
- 標籤上的規格
- 技術規格
安裝地點
- 安裝地點必須全年都不結霜。
- 此熱水器只可作掛牆式安裝，出入水接駁喉位向下。
- 熱水器的防護等級為IP25,按照VDE0100 part 701,必須安裝於保護
區1內。
- 為避免失溫,應將熱水器安裝於最接近出水位置。
- 為方便保養工作,應在供水喉位置裝上閘掣。
- 可選用銅或鋼喉,如選用膠喉,該膠喉必須符合DIN16893 Series 2
規格。熱水喉必須有保溫保護。
- 來水電阻最少應為1100Ω cm 15 °C。
安裝牆上掛碼
安裝此熱水器並不需要鑽牆裝上牆上掛碼,只需將杬牙如下列
2.裝上便可。
1. 安裝前先清洗供水喉管。
8. 安裝
(15)
尺 寸 ，單 位 ：m m

123RC
20
2. 用12mm六角螺絲鎖匙將杬牙(15)旋入牆上接駁位置,旋妥杬牙
後,杬牙應外露12mm。
3. 將附上的模板放在牆上適當位置以配合冷熱水位置。根據模板
位置記下鑽孔位置,用6mm鑽咀鑽孔,放入合縫釘旋入掛碼(6)。
4. 可用附上的水平板碼調校牆面不平或傾斜情況達30mm,視乎程
度,水平板碼應裝在牆壁與掛碼之間。
安裝接駁件
1. 如圖所示將緊固螺母密封圈與冷水進水配件連接。
2. 如圖所示將緊固螺母密封圈與熱水出水配件連接。
安裝熱水器
1. 旋鬆螺絲,打開面蓋。
- 當更換熱水器時,電源線只可從熱水器上半部接駁,只在此情況
下,參考第21頁“上面部份電線接駁”。
- 介開電線位密封膠蓋,介開的面積應略為少於電線的面積以確
保最佳的防水性能,將密封膠蓋套入入線孔。
- 從牆身電線出線位預留約6cm電線,將電線經密封膠蓋穿入熱水
器內。
2. 將熱水器掛在掛接背板(6)上,如有需要可略為彎曲出水喉。
3. 將兩個3/8”緊固螺母及3/8”密封圈旋入進出入連接配件內。
4. 將膠螺母旋入牆上掛碼螺紋棒上。
5. 打開冷水供水喉,慢慢旋開閘掣 12C,查看有否滲漏。
6. 接着連續打開及關閉熱水龍頭數次將熱水器內的空氣排出。
8. 安裝(續上頁)
(6)
S
(12 c)
(12)
(1)