German pool DEX12 User manual

使用說明書 U S E R M A N U A L

Instantaneous Electric Water Heater

即热式电热水器

DEX12

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 futurereference.

如欲獲取更多有關本產品最新資訊，歡迎瀏覽本公司網站。

For additional product information, please visit our website.

www.germanpool.com. cn

Contents

P.3

1. Overview

2. Safety instructions

3. Technical specifications

4. Dimensions

5. Installation

Installation site

Mounting accessories

Installing the wall bracket

Installing connection pieces

Installing the appliance

6. Direct connection

7. Electrical connection

Wiring diagram

Structural prerequisites

Electrical connection from below

Electrical connection from above

8. Initial operation

Selection of power rating

Reinstallation

Lock level

9. Service menu

10. Maintenance work

Cleaning and replacing the filter strainer

Cleaning and replacing the filter strainer if direct connected

11. Environment and recycling

12. How to use

13. Troubleshooting

Quick reference guide

如欲獲取更多有關本產品最新資訊，歡迎瀏覽本公司網站。

For additional product information, please visit our website.

www.germanpool.com. cn

1.Overview

P.4

When ordering spare parts, please always specify the appliance model and serial number.

Connecting pipe

PCB cover

Bottom part

PCB

Control panel support

Connecting terminal

Inlet pipe

Cold water connection

Water splash protection

sleeve

in Set

GrommetScrew-in nipples ½”

Fine filter

Flow limiter 5 l/min

Frame

DEX hood

Non-return valve

Flow sensor

Thermal sensor set

CMU PCB

Safety thermal

cut-out

DEX control panel

Outlet pipe

Hot water

connection

Wall bracket

Heating element

including safety

pressure cut-out

2.Safety Instructions

P.5

Cold water connection

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 or the plumbing system

is emptied (e.g. due to work on the plumbing system, if there is a risk of freezing or in case of

maintenance), the appliance must be vented correctly in accordance with the instructions in the

manual.

Do not remove the front cover under any circumstances before switching off the 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 be below 25°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 can be used by children aged from 8 years and above and persons with reduced

physical, sensory or mental capabilities or lack of experience and knowledge if they have been given

supervision or instruction concerning use of the appliance in a safe way and understand the hazards

involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made

by children without supervision.

Warning

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.

3.Technical Specications

P.6

DEX 12 ELECTRONIC MPS®Model

A * Energy efficiency class

8.8 12 Power setting

8.0 kW (36.6 A) 10.5 kW (47.7 A) Chosen capacity (Current) @ 220 V

8.8 kW (38 A) 11.5kW (50 A) @ 230 V

9.6 kW (40 A) 12.5 kW (52.2 A) @ 240 V

1/N/PE 220V .. 230V .. 240V Electrical connection

10.0 mm2Required cable size

Hot water (l/min)

4.5 5.9 1) max. at ∆t = 28 K

3.3 4.3 max. at ∆t = 38 K

0.4 l Rated volume

Pressure type 1 MPa (10bar) Type

Bare wire heating system IES

®Heating system

≥ 1300 Ωcm Required spec. water

resistance @ 15°C

Spec. electrical conductivity

Inlet temperature

Flow rate to switch on – max. flow rate

Pressure loss

Temperature choice

Water connection

Weight (when filled with water)

≤ 77 mS/m

Below 25°C

2.5 – 5.0 l/min 2)

0.2 bar / at 2.5 l/min 1.3 bar/ at 9.0 l/

min 3)

20 °C – 55 °C

G ½”

3.70 kg

IVDE class of protection

Type of protection / safety

*) The declaration complies with the preliminary requirements of the EU regulation No 812/2013

being binding as of September 2015 in the EU.

1) Maximum applicable cable size is 10mm2.

2) Mixed water .

3) Flow rate limited to achieve optimum temperature rise.

4) Specifications are subject to change without prior notice.

5) If there is any inconsistency or ambiguity between the Chinese version and the English version,

the English version shall prevail.

6) Refer to www.germanpool.com for the most up-to-date version of the Operating Instructions.

4.Dimensions

P.7

231

170

363

466

100

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 specifications on the rating plate.

• Technical specifications.

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 protect-ion 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 appliance must be

accessible for maintenance work.

• Plastic pipes may only be used if they conform to DIN 16893, Series2. The hot water pipes must be

thermally insulated.

• The specific resistance of the water must be at least1,000Ω cm at 15 °C. The specific resistance can

be asked for with your water distribution company.

5.Installation

Dimensions in mm

5.Installation

P.8

Mounting accessories

For installations under difficult conditions, these

mounting accessories are available:

Mounting kit RDX

(Art. no. 34100)

The instant water heater can be installed by means

of this mounting kit in the below situations. The

power supply cable is coming out of the wall at any

place from behind the unit, but the wall has unusual

surface conditions, making it difficult for installing

the water heater. The power supply cable is coming

from elsewhere and has to be connected to the back

of the unit.

Extension kit VDX

(Art. no. 34120) – RDX is necessary!

The instant water heater can be installed by means

of this extension kit if the water pipes are coming

displaced or exchanged out of the wall or if they are

coming edgewise on the wall to the unit. The power

supply could come out of the wall at any place under

the unit or the wiring could be installed surface-

mounted.

Extension kit UDX

(Art. no. 34110) – RDX is necessary!

The instant water heater can be installed by means

of this extension kit if the water-connections are

expiring above the unit. The power supply could

come out of the wall at any place under the unit or

the wiring could be installed surface-mounted.

RDX

VDX

UDX

5.Installation

P.9

Installing the wall bracket

Thoroughly rinse the water supply pipes before installation to

remove soiling from the pipes.

1. Using a 12 mm hexagon socket screw key, screw the screw-

in nipples into the wall connections. The seals must be fully

screwed into the thread. After tightening, the double nipples

must protrude by at least 12mm.

2. 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.

3. Screw in the wall bracket.Offset tiling or uneven surfaces

can be compensated by up to 30 mm with the aid of the

spacers supplied. The spacers are fitted between the wall

and the wall bracket.

Note

If you install this instantaneous water heater in exchange

for a conventional instantaneous water heater, there is

generally no need to drill holes for the wall bracket, in this

case step 2 would not be necessary.

5.Installation

P.10

(a)

Closed

Open

Installing connection pieces

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 “Electrical

connection from above”.

Place the appliance on the heater bracket 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.

Screw the two ⅜” union nuts of the appliance’s

water connection pipes, each with the ⅜” seal, onto

the fittings.

Screw the plastic knurled nut onto the threaded rod

of the wall bracket.

Open the water supply line to the unit and slowly

open (position “open”) the shut-off valve (a) in the

cold water connection piece. Check all connections

for leaks.

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.

As shown in the illustration, screw the cold water

connection piece with the union nut and the ½” seal

onto the cold water connection.

Screw the hot water connection piece with the union

nut and the ½” seal onto the hot water connection.

Note

Fasten the screw nuts with caution, to avoid

damage to the valves or the piping system.

Installing the appliance

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