Viessmann VITOTHERM EI5 Series User manual

Vitotherm EI5
Version EI5.A3 K
Version EI5.A5 K
Electric instantaneous water heaters
Please retain for future use
Operating instructions
for system users
VITOTHERM EI5
6167204 GB 11/2020

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Danger
This symbol warns against the
risk of injury.
The appliance can be operated by
children aged 3 and older, as well as by
individuals with reduced physical,
sensory or mental faculties or those
lacking in experience and knowledge,
provided such individuals are supervised
or have been instructed in the safe use
of this appliance and any risks arising
from it.
Caution
Supervise children in the proximity
of the appliance.
■ Never permit children to play
with the appliance.
■ Cleaning and user maintenance
must never be carried out by
unsupervised children.
Caution
This symbol warns against the
risk of material losses and
environmental pollution.
Note
Details identified by the word "Note"
contain additional information.
Safety instructions explained
Target group
For your safety
Safety instructions
Safety instructions for working on the appliance
■The appliance may only be connected
and commissioned by authorised
contractors.
■Observe the specified electrical
connection requirements.
■Modifications to the existing
installation may only be carried out by
authorised contractors.
■The appliance must be earthed.
These instructions are intended for
users of the appliance
Before commissioning and operating the appliance, please read the documents
enclosed with the appliance.
Follow the safety instructions closely to prevent hazards, injury and material
losses.
Store the supplied documents in a safe place.
Connecting the appliance

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Safety instructions for operating the device
Danger
Hot surfaces can cause burns.
■ Do not open the appliance.
■ Do not touch the hot surfaces of
uninsulated pipes and fittings.
Auxiliary components, spare parts
and wearing parts
Caution
Components that were not tested
with the appliance may damage the
appliance or affect its function.
Have all installation or replacement
work carried out exclusively by
heating contractors.
Danger
Damaged equipment poses
a safety hazard.
Check the appliance for external
damage.
Never start up a damaged
appliance.
For your safety (cont.)
Safety instructions
■ All settings and work on the appliance
must be performed as specified in
these operating instructions.
Further work on the appliance may be
carried out only by authorised
contractors.
■ Do not open the appliance.
■ Do not remove its casings.
■ Do not modify or remove any
attached parts or installed
accessories.
■ Do not open or retighten any pipe
connections.
Working on the appliance Cleaning the appliance
■ Clean the exterior of the appliance
with a commercially available
domestic cleaning agent.
Do not use scouring agents,
solvent-based cleaners or steam
cleaners.
■ Regular maintenance ensures
trouble-free, energy efficient,
environmentally responsible and safe
operation.
Have the appliance tested and
serviced by an authorised contractor
at least every 3 years.
Danger
Incorrectly executed work on the
appliance can lead to life
threatening accidents.
Work on electrical equipment may
only be carried out by a qualified
electrician.

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For your safety
Safety instructions
■ For showers, the DHW temperature
must not exceed 55 °C.
If necessary, have safety equipment
installed to prevent scalding.
■ Temperatures above approx. 43 °C
can cause a burning sensation,
particularly in children.
■ The fittings will also become hot after
an extended runtime.
■ In the case of appliances for
reheating, the water running into the
appliance may already be hotter than
the required temperature.
Consequently the water may be too
hot when it is drawn off.
■ To prevent it from overheating, do not
cover the appliance.
■ At all times comply with the operating
conditions specified on the type plate.
Operation of the appliance
■ Ensure that the water can flow freely
from the water outlet.
■ Do not install any fittings or
appliances that will obstruct the free
flow of water from the water outlet.
■ Regularly descale the water outlets at
the draw-off points, e.g. shower head,
aerator, taps.
■ Use only fittings, aerators and shower
heads that have been recommended
by the manufacturer.
Operating appliances in
non-pressurised installations
Caution
Incorrect ambient conditions may
damage the appliance and put safe
operation at risk.
■ Ensure ambient temperatures
above 0 °C.
■ Avoid air contamination through
halogenated hydrocarbons
(e.g. as contained in paints,
solvents and cleaning agents).
Avoid excessive dust, e.g.
through grinding/polishing work.
■ Avoid constant high humidity
levels (e.g. through continuous
drying of laundry).
Installation room requirements
Danger
Easily flammable liquids and
materials (e.g. naphtha/petrol,
solvents, cleaning agents, paints or
paper) can trigger deflagration and
fire.
Never store or use such materials
in the installation room or in the
immediate vicinity of the appliance.

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For your safety (cont.)
Safety instructions
Danger
If there are leaks in the appliance,
there is a risk of electric shock.
■Isolate the appliance from the
power supply, e.g. at the
separate fuse or a mains isolator.
■Close the water supply pipe.
■Notify your heating contractor.
If water escapes from the appliance
Danger
If water escapes from the
appliance, there is a risk of
scalding.
Do not touch the hot water.
Faults on the appliance
■Isolate the appliance from the power
supply, e.g. at the separate fuse or
a mains isolator.
■ Close the shut-off valve of the cold
water supply.
■Notify your heating contractor.

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Product information
The appliance is suitable for pressure-tested
and non-pressurised installation.
Venting
1. Switch off the power supply, e.g. at the
separate fuse or a mains isolator.
2. Open and close the hot water tap for
approx. 15 to 30 seconds respectively in
order to vent the water installation. Repeat
this process until a constant, even flow of
water is achieved.
3. Switch on the power supply.
Maintenance
1. Switch off the power supply, e.g. at the
separate fuse or a mains isolator.
2. Close the shut-off valve on the cold water
supply.
3. Undo the cold water supply pipe.
4. Remove the filter from the fittings of the
cold water supply.
5. Clean the filter.
6. Reinsert the filter.
7. Re-fasten the cold water supply pipe to
the appliance.
8. Open the shut-off valve on the cold water
supply.
9. Check the connections for leaks.
10.Vent the water installation as described in
the previous chapter.
Operating instructions
Caution
Air in the water installation may damage
the appliance.
Vent the water installation after carrying
out work on the appliance or the water
installation.
Intended use
The appliance is used for the heating of
domestic hot water and can supply one or
more draw-off points as applicable.
The appliance is intended for domestic use.
It can be operated safely by untrained
persons. The appliance can also be used in
a non-domestic environment, e.g. in a small
business, as long as it is used in the same
way.
Any use that differs from or goes beyond this
is considered inappropriate.
Intended use also extends to compliance with
these instructions and with the instructions for
any accessories used.
The appliance is equipped with a differential
pressure switch.
The differential pressure switch automatically
switches on the heating function when
sufficient water flows through the appliance.
Operation

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Specification
Electric instantaneous water heaters EI5.A3 K EI5.A5 K
Rated voltage 230 V~
Rated output kW 3.5 5.5
Power consumption A 15.2 23.9
Flow rate (at Δt = 30 K) l/min 1.7 2.6
Rated voltage 220 V~
Rated output kW 3.2 5.0
Power consumption A 14.5 22.7
Flow rate (at Δt = 30 K) l/min 1.5 2.4
Flow pressure MPa 0.12 ÷ 0.6
Start ow rate l/min 1.2 2.0
Dimensions (height x width x depth) mm 225 x 170 x 75
Weight kg 1.2
Min. cable cross-section mm23 x 1.5 3 x 2.5
Max. permissible mains impedance Ω0.31
Min. ow resistance at water temperature 15 °C Ωcm 1100
Water connection (male thread) G 3/8 (distance between inlet and
outlet 80 mm)
Operating instructions

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The appliance must not be disposed of with domestic waste.
The appliance must be taken to a collection point for electrical
and electronic waste for recycling.
Correct disposal of the product prevents potentially harmful
e󰀨ects on the environment, which can occur due to the
improper handling of waste. For more information on recycling
this product, please contact your local government, a
waste disposal service, or the store where this product was
purchased.
Copyright: Viessmann Poland. The reproduction, copying or use of this document
or parts thereof without the consent of the author is not permitted. 10/2020
Viessmann Werke GmbH & Co. KG
D-35107 Allendorf
Phone: [phone]
Fax: [phone]
www.viessmann.com
Subject to technical modications.