Technotherm CDE 18–27 VarioSelect Installation And Technical Manual

TECHNOTHERM

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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

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2. Safety instructions

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

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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 mm

2

6.0 mm

2 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)

9,0

3)

13,8

3)

10,2

3)

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

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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 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, 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