Technotherm CDE 18-27 VarioSelect Manual de usuario

TECHNOTHERM

THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RETAINED FOR

FUTURE REFERENCE.

BE SURE TO OBSERVE ALL LABELS AND WARNINGS ON THE APPLIANCE

Arcle No.: 911 360 600

Edion: 07/15

Installaon and technical manual

Instant water heater

CDE 18–27 VarioSelect

Table of content

1. Overview ..............................................................................................3

2. Safety Instructions.......................................................................................4

3. Technical datas..........................................................................................5

4. Dimensions.............................................................................................5

5. Installation .............................................................................................6

Installation site .......................................................................................... 6

Mounting accessories ....................................................................................7

Mounting the wall bracket ................................................................................8

Installing connection pieces ...............................................................................9

Installing the appliance ...................................................................................9

6. Direct connection ......................................................................................10

7. Electrical connection ....................................................................................11

Wiring diagram.........................................................................................11

Structural prerequisites..................................................................................11

Electrical connection from below ..........................................................................11

Electrical connection from above ..........................................................................12

8. Initial operation ........................................................................................13

9. Maintenance work .....................................................................................14

Cleaning and replacing the filter strainer....................................................................14

Cleaning and replacing the filter strainer if direct connected ...................................................14

10. Environment and recycling .............................................................................15

11. Device description.....................................................................................15

12 Usage................................................................................................16

13 Self-help / customer service .............................................................................18

14 Guarantee ............................................................................................19

1. Overview

Specify when ordering spare parts device type and serial number

VarioSelectCDE 18-27 TECHNOTHERM

2. Safety instructions

Please read these instructions carefully before installing or using the appliance! Keep the instructions handy with the applian-

ce for future use!

Instruction manuals are intended for the specialist who is respon-sible for the installation of the appliance. Operation

manuals are for the end user. The latest version of the instructions can be found online at

http://www.technotherm.com/Instantaneous-Water-Heater-varioselect.html

• Do not use the appliance until it has been correctly installed and unless it is in perfect working order.

• Do not remove the front cover under any circum-stances before switching off the mains electrical sup-

ply to the unit.

• Never make technical modifications, either to the appliance itself or the electrical leads and water

pipes.

• The appliance must be earthed at all times.

• 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.

• The appliance is only suitable for domestic use and similar applications inside closed rooms, and must

only be used to heat incoming water from the mains supply.

• The appliance must never be exposed to frost.

• The values stated on the rating plate must be observed.

• In case of malfunction, disconnect the fuses imme-diately. In case of leaks, cut off the mains water

supply instantly. Repairs must only be carried out by the customer service department or an authori-

sed professional.

• This appliance can be used by children aged from 8 years and above and persons with reduced physi-

cal, sensory or mental capabilities or lack of experience and knowledge if they have been given super-

vision or ins truction 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.

TECHNOTHERM

3. Technical specifications

4. Dimensions

Typ CDE 18 .. 27 Vario Select

Energy efficiency class A *)

Rated capacity / rated current 18 kW (26 A) 21 kW (30 A) 24 kW (35 A) 27kW (39A)

Chosen capacity / current 3/PE 380..415V AC 3/PE 400V

Min. required cable size 1) 4.0 mm26.0 mm2 2)

Hot water (l/min) 1) max. at ∆t = 28 K

max. at ∆t = 38 K

9,23)

6,8

10,73)

7,9

12,23)

9,03)

13,83)

10,23)

Rated volume 0,4 l

Type Pressure type 1,0 MPa (10 bar)

Heating system Bare wire heating sytem

Required spec. water resistance @ 15 °C

Spec. electrical conductivity

≥ 1300 Ωcm

≤ 76 mS/m

Inlet temperature 0 – 30 °C

Flow rate to switch on – max. flow rate 4) 2,5 – 8,0 l/min

Pressure loss 0,2 bar bei 2,5 l/min 1,3 bar bei 9,0 l/min 5)

Temperature choice 35 °C / 38 °C / 42 °C / 48 °C / 55 °C

Water connection G ½“

Weight (when filled with water) 3,65 kg

VDE class of protection I

Type of protection / safety IP25

*) The declaration complies with the requirements of the EU regulation No 812/2013 being binding as of September 2015

1) Maximum applicable cable size is 10mm2

2) then replacing a 21 kW / 380 V appliance the cable size of 4 mm2 can be adopted.

3) Mixed water

4) Flow rate limited to achieve optimum temperature rise

5) Without flow regulator

VarioSelectCDE 18-27 TECHNOTHERM

Installation site

• Appliance must only be installed in frost-free rooms. Never expose appli-ance

to frost.

• The Appliance must be wall mounted and has to be installed with water

con-nectors downward.

• The appliance complies with protection type IP25 and may therefore be instal-

led 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, Series 2. The hot

water pipes must be thermally insulated.

• The specific resistance of the water must be at least 1100 Ω cm at 15 °C. The

specific resistance can be asked for with your water distribution company.

5. Installation

• The following regulations must be observed:VDE 0100

• EN 806-2

• Installation must comply with all statutory regulations, as well as those of the

local electricity and water supply companies.

• The rating plate and technical specifications

• Only intact and appropriate tools must be used

TECHNOTHERM

For installations under difficult condi-

tions, these mounting accessories are

available:

Mountik kit RDX

The instant water heater can be instal-

led 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.

Mounting accessories

Extension kit VDX

RDX is necessary!

The instant water heater can be instal-

led by means of this extension kit if the

water pipes are coming displaced or

exchanged out of the wall or if they are

coming edge-wise 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

RDX is necessary!

The instant water heater can be instal-

led 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.

5. Installation

VarioSelectCDE 18-27 TECHNOTHERM

5. Installation

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.

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 tigh-

tening, the double nipples must protrude by at least 12 mm.

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 accord-ing to the

template and drill them using a 6 mm 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.

Installing the wall bracket

TECHNOTHERM

5. Installation

Note: Fasten the screw nuts with cau-tion, to avoid damage to the valves or the

piping system.

1. As shown in the illustration, screw the cold water connection piece with the

union nut and the ½“ seal onto the cold water connection.

2. Screw the hot water connection piece with the union nut and the ½“ seal onto

the hot water connection.

1. To open the appliance hood, take off the faceplate and unscrew the main hood

screw.

2. When replacing an appliance, the elec-trical power supply cable may be con-

nected in the upper part. Only in such case, follow the instructions “Electrical

connection from above”.

3. 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.

4. Screw the two ⅜“ union nuts of the appliance‘s water connection pipes, each

with the ⅜“ seal, onto the fittings.

5. Screw the plastic knurled nut onto the threaded rod of the wall bracket.

Installing connection pieces

Installing the appliance

VarioSelectCDE 18-27 TECHNOTHERM

6. Direct connection

Note: Fasten the screw nuts with caution, to avoid damage to the valves or the

piping system.

For direct connection, the two ½“ screw-in nipples and the ½“ seals must be

screwed into the ½“ union nuts of the hot-water and cold water connectors. The

two ½“ caps of the side outlets of the hot water and cold-water 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

illus-trated 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 ½“ side outlets of the

hot-water and cold-water connectors with ½“ union nuts and ½“ seals. The holes

required for the pipes must then be bro-ken 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!

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