Viessmann EHO Operating instructions

Electric immersion heater EHO
Service instructions
for heating engineers
Electric immersion heater EHO
part no.7265124,
part no.7265197 and
part no.7265198
Electric immersion heater EHO,
installed in Vitocell−V 300, typeEVI
5692415 GB3/2001 File in: service folder or keep separate from the equipment

General Information
2
Safety instructions
Please follow these safety instructions closely to prevent accidents and material losses.
These safety instructions also apply in conjunction with heat generators.
Work on the equipment
Installation, initial start−up,
maintenance and repairs must only
be carried out by a competent
person (heating engineer/installation
contractor) (EN50110, part1, and
VDE1000, part10, or local
regulations).
Before working on the equipment/
heating system, isolate the mains
electrical supply (e.g. by removing a
separate fuse or by means of a
mains electrical isolator) and
safeguard against unauthorised
reconnection.
Disconnect the system from the
mains power supply by means of a
device which simultaneously isolates
all non−earthed conductors with at
least 3 mm contact separation.
Work requiring the control unit to be
opened must not subject internal
components to electrostatic
discharges.
Gas installation work
This must only be carried out by an
approved contractor.
Please observe all commissioning
work specified acc. to TRGI’86/96 or
TRF1996 for gas systems.
Repair work
It is not permitted to carry out
repairs on parts that fulfil a safety
function.
Use only original Viessmann spare
parts or equivalent parts that have
been approved by Viessmann.
Initial start−up
This must be carried out by the
system installer or a designated
commissioning engineer; all
readings should be recorded in a
commissioning report.
Instructing the system user
The system installer must hand the
system operating instructions to the
user and instruct him/her in the
operation of the system.
¨Safety instructions
This denotes instructions which
must be observed to prevent
accidents and material losses.
This symbol is a reference
to other instructions which
must be observed.
Applicability
Electric immersion heater EHO acc. to DINVDE0700
Part no.7265124 Part no.7265197 Part no.7265198
for installation in for installation in for installation in
Vitocell−V100 Vitocell−V300 Vitocell−B 100
typeCVA typeEVI typeCVB
300 and 500litres and
Vitocell333
typeSVK
for heating DHW up to 80ºC.
5692415 GB

Contents
3
Page
General Information Safety instructions2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applicability2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial start−up
and maintenance
Implementation4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HShutting down the heating system 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HChecking connections 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HChecking safety equipment 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HChanging the thermostat setting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HStarting the heating system 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Resetting the high limit safety cut−out6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional information Electrical connection7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts list8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HElectric immersion heater EHO, part no.7265124,
for Vitocell−V100, typeCVA 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HElectric immersion heater EHO, part no.7265198,
for Vitocell−B100, typeCVB and Vitocell333, typeSVK 9
. . . . . . . . . . . . . . . .
HElectric immersion heater EHO, part no.7265197,
for Vitocell−V300, typeEVI 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commissioning/service report11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Declaration of conformity12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5692415 GB

Initial start−up and maintenance
4
Implementation
For commissioning the electric immersion heater EHO, see also the
operating instructions.
¨Safety instructions
The electric immersion heater EHO may only be taken into use after the DHW
cylinder has been properly filled and is under operating pressure.
Only open the heating water connections after the DHW cylinder has been
de−pressurised.
Only drain the DHW cylinder with a vacuum pump when the air vent valve is
open.
1. System shutdown
Maintenance
Isolate the mains electricity supply
and safeguard against unauthorised
reconnection.
2. Checking connections
Initial start−up Maintenance
Check the compression fittings for
leaks and tighten if necessary.
3. Checking all safety equipment
Initial start−up Maintenance
Check the function of safety valves
according to manufacturer’s
instructions.
5692415 GB

Initial start−up and maintenance
5
Implementation (cont.)
4. Changing the thermostat setting
Initial start−up Maintenance
"As delivered" condition
The thermostat may be set to a value between 30 and 60ºC.
The frost protection temperature is approx. 5ºC.
Adjustment options
The upper limit may be changed to 80ºC.
1. Pull rotary selectorAoff the
thermostat.
2. Extract spigotBwith a pair of
pliers from the rotary selector.
3. Push rotary selectorAonto the
thermostat.
4. Tick the operating instructions to
mark the changeover of the
thermostat.
¨Safety instructions
The maximum DHW temperature
must not be exceeded. If necessary,
installed a suitable safety device for
this purpose.
5. System start−up
Initial start−up Maintenance
1. Set any installed pressure reducer
to the required operating pressure
(max. operating pressure 10bar).
2. Check whether the electrical
connection is secure and meets
the appropriate requirements.
3. Switch on the mains power.
4. Commission the electric
immersion heater EHO and
monitor the initial heating up.
5. Check all heating modes (electric
immersion heater EHO and
possibly heating by boiler).
6. Record the work carried out in the
commissioning/service report.
Please note:
You will find the commissioning/
service report on the penultimate
page of this manual.
5692415 GB
A
B
.

Troubleshooting
6
Resetting the high limit safety cut−out
Please note:
The high limit safety cut−out must be reset, if
it has been activated (switch−off point: 100ºC).
1. Isolate the electric immersion
heater EHO supply cable and
safeguard against re−connection.
2. Remove the cap.
3. Press reset buttonAon the
thermostat/high limit safety
cut−out.
The high limit safety cut−out will
reset.
5692415 GB
+0K
8K

Additional information
7
Electrical connection
¨Safety instructions
Observe the relevant DIN standards and VDE regulations (in particular VDE
regulation0100) as well as the technical requirements of local energy
suppliers and water authorities, and all other local regulations.
Provide a facility in the electric immersion heater power supply cable which
can separate all conductors from the mains supply with at least 3mm contact
separation (except the neutral conductor).
Connection cable: H05VVF
A3pole switch
BElectric immersion heater
The electric immersion heater can be
operated with three output stages.
The output is determined by the way
the electric immersion heater is
connected.
Type of connection Output
single phase (L1)
two phase (L1 and L2)
three phase (L1, L2
and L3)
2kW
4kW
6kW
5692415 GB
3/N/PE ~ 400/230V

Additional information
8
Parts list
Electric immersion heater EHO, part no.7265124, for Vitocell−V 100, typeCVA
When ordering spare parts:
Quote the part and serial no. of the
equipment (see type plate) and the
item no. of the required part (as per
parts list).
Obtain common parts from your
local supplier.
Parts
001 Gasket
003 Flange (incl. item001)
004 Threaded immersion heater
005 Combination thermostat/high
limit safety cut−out
006 Rotary selector
007 Cover
Parts (not shown)
010 Installation instructions
011 Operating instructions
013 Service instructions
AType plate
5692415 GB
007
004
005
A
006
001
003

Additional information
9
Parts list (cont.)
Electric immersion heater EHO, part no.7265198, for Vitocell−B100, typeCVB, and Vitocell333, typeSVK
When ordering spare parts:
Quote the part and serial no. of the
equipment (see type plate) and the
item no. of the required part (as per
parts list).
Obtain common parts from your
local supplier.
Parts
001 Threaded immersion heater
002 Combination thermostat/high
limit safety cut−out
003 Rotary selector
Parts (not shown)
010 Installation instructions
012 Service instructions
013 Operating instructions
AType plate
5692415 GB
003
002
A
001

Additional information
10
Parts list (cont.)
Electric immersion heater EHO, part no.7265197, for Vitocell−V 300, typeEVI
When ordering spare parts:
Quote the part and serial no. of the
equipment (see type plate) and the
item no. of the required part (as per
parts list).
Obtain common parts from your
local supplier.
Parts
001 Flange (incl. item002)
002 Gasket
003 Reducing coupling
004 Threaded immersion heater
005 Combination thermostat/high
limit safety cut−out
006 Rotary selector
007 Cover
008 Edge protector
Parts (not shown)
010 Installation instructions
011 Operating instructions
013 Service instructions
AType plate
5692415 GB
007
004
003
001
002
008
A
006

Additional information
11
Commissioning/service report
Initial start−up Maintenance/Service Maintenance/Service Maintenance/Service Maintenance/Service
date:
by:
Maintenance/Service Maintenance/Service Maintenance/Service Maintenance/Service Maintenance/Service
date:
by:
5692415 GB

Viessmann Werke GmbH&Co
D35107 Allendorf
Tel: (06452) 700
Fax: (06452) 702780
www.viessmann.de
Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
Tel: [phone]
Fax: [phone]
email: info−[email protected]
Additional information
12
Declaration of Conformity for electric immersion heater EHO
We, Viessmann Werke GmbH&Co, D35107 Allendorf, declare as sole
responsible body, that the product with the type code
Electric immersion heater EHO for DHW cylinder Vitocell−V100, typeCVA
and Vitocell−B 100, type CVB, Vitocell−V300, typeEVI, and Vitocell333,
typeSVK
corresponds to the following
standards:
EN500811
EN500821
EN605552
EN605553
EN605553/A
This product is identified in
accordance with the following
guidelines
73/23/EEC
89/336/EEC
as follows:
_
Allendorf, the 1stFebruary1999 Viessmann Werke GmbH & Co
Prof. Dr.Ing. Helmut Burger
5692415 GBSubject to technical modifications.
Printed on environmentally friendly, chlorine−free bleached paper.