Everflo EPU-OS5 User manual

INSTALLATION INSTRUCTIONS —
POINT OF USE WATER HEATERS
EPU - OS5

CONTENTS
Special Information 2
General information, symbols in this documentation, units of measurement 3-4
Intended use, general safety instructions 5
Appliance description; cleaning, care & maintenance 7
Troubleshooting, General safety instructions, Instructions, standards and regulations 8
Appliance description; preparation 9
Installation, appliance installation Water connection Power supply 11
Commissioning, Initial start-up,Recommissioning 13
Shutdown, Troubleshooting 14
Maintenance 15
Specification, dimensions and connections 17
Wiring diagram 18
Heat-up profile 19
Extreme operating and fault conditions, details on energy consumption 19
ERP Performance 20
Data table 21
Gaurantee terms and conditions 22
01

SPECIAL INFORMATION
-- The appliance may be used by children aged 8 and older and persons with reduced physical,
sensory or mental capabilities or a lack of experience and know-how, provided that they are
supervised or they have been instructed on how to use the appliance safely and have understood
the resulting risks. Children must never play with the appliance. Children must never clean the
appliance or perform user maintenance unless they are supervised.
-- When permanently connected to the power supply using a dedicated junction box, the appliance
must be able to be isolated from the mains power supply by an isolator that disconnects all
poles with at least 3 mm contact separation.
-- The power cable may only be replaced (for example if damaged) by a qualified contractor.
-- Never connect the appliance via a time switch.
-- Secure the appliance as described in chapter “Installation / Installation”.
-- During heating, expansion water will drip from the tap outlet.
-- The appliance must only be installed with an open (non-pressurised) tap.
-- Never subject the appliance to water pressure.
-- The tap outlet has a vent function. Scale build-up can block the outlet and subject the appliance
to pressure.
-- Never seal the tap outlet.
-- Only use special aerators for non-pressurised water heaters.
-- Never extend the tap outlet with a hose.
-- Drain the appliance, described in chapter “Maintenance”.
02

GENERAL INFORMATION
The chapters “Special Information” and “Appliance description ” are intended for both
the user and qualified contractors.
The chapter “Installation” is intended for qualified contractors.
Note
Read these instructions carefully before using the appliance and retain them for future
reference.
Pass on the instructions to a new user if required.
Safety instructions
Structure of safety instructions
Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
»» Steps to prevent the risk are listed.
Symbols, type of risk Keywords
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
KEYWORD Meaning
DANGER Failure to observe
this information
will result in
serious injury or
death.
WARNING Failure to observe
this information
may result in
serious injury or
death.
CAUTION Failure to observe
this information
may result in
non-serious or
minor injury.
03

Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
»» Read these texts carefully.
Symbol
Material losses
(appliance damage, consequential losses and environmental
pollution)
Appliance disposal
»» This symbol indicates that you have to do something. The action you need to take is
described step by step.
Note
All measurements are given in mm unless stated otherwise.
04
UNIT OF MEASUREMENT

SAFETY
Intended use
This open vented (non-pressurised) appliance is designed for heating domestic hot wa-
ter. The appliance can supply one draw-off point.
This appliance is intended for domestic use. It can be used 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 other use beyond that described shall be deemed inappropriate. Following of these
instructions and of instructions for any accessories used is also part of the correct use
of this appliance.
General safety instructions
WARNING Burns
During operation, the tap can reach temperatures in excess of
60 °C.
There is a risk of scalding at outlet temperatures in excess of
43 °C.
WARNING Injury
The temperature selector should only be removed by a
qualified contractor.
WARNING Injury
The appliance may be used by children aged 8 and older and
persons with reduced physical, sensory or mental capabilities or a
lack of experience and know-how, provided that they are super-
vised or they have been instructed on how to use the appliance
safely and have understood the resulting risks. Children must
never play with the appliance. Children must never clean the ap-
pliance or perform user maintenance unless they are supervised.
05

Material losses
The user should protect the appliance, the water pipes and
the tap against frost.
Material losses
Never subject the appliance to water pressure. The tap outlet
has a vent function. Scale build-up can block the outlet and
subject the appliance to pressure.
Never seal the tap outlet.
Only use special aerators for non-pressurised
water heaters.
Never extend the tap outlet with a hose.
Material losses
Connecting the appliance via a time switch will cause an
unintentional reset of the high limit safety cut-out.
Never connect the appliance to the power
supply via a time switch.
See type plate on the appliance.
06
TEST SYMBOLS

APPLIANCE DESCRIPTION
1 Temperature selector
2 Heat-up indicator
Depending on the system, the actual temperatures may vary from the set value.
°C = Cold. On this setting, the appliance is protected from frost.
The tap and the water line are not protected.
E = Recommended energy saving setting (approx. 60 °C), minor
scaling
85 = Highest selectable temperature
The open vented (non-pressurised) appliance constantly maintains the water
content at the pre-selected temperature. The appliance switches on automatical-
ly as soon as its temperature falls below the set value. During heating, expansion
water drips from the tap. The appliance must only be installed with taps suitable
for open vented (non-pressurised) water heaters.
Operation
You can set any required DHW outlet temperature variably at the temperature
selector. The heat-up indicator illuminates during the heat-up process.
°C
E
2
1
85 35
CLEANING, CARE AND MAINTENANCE
Never use abrasive or corrosive cleaning agents. A damp cloth is sufficient for
cleaning the appliance.
Check the tap regularly. You can remove limescale deposits at the outlet using
commercially available descaling agents.
Almost every type of water will deposit limescale at high temperatures. This
settles inside the appliance and affects both the performance and service life.
The heating elements should therefore be descaled if necessary. A qualified
contractor who is aware of the local water quality will tell you when the next
descaling is due.
07

TROUBLESHOOTING
Problem Cause Remedy
The appliance does not
supply hot
water.
The temperature selec-
tor is set to
“°C”.
Switch the appliance ON
by turning
the temperature selec-
t o r.
No power at the appli-
ance.
Check the plug / fuses in
the domestic
fuse box.
Water can only be drawn
at a reduced
rate.
The aerator in the tap is
scaled up.
Descale / replace the
aerator.
Loud boiling noises in-
side the appliance.
The appliance is scaled
up.
Have the appliance des-
caled by a
qualified contractor.
If you cannot remedy the fault, notify your qualified contractor. To facilitate and
speed up your enquiry, please provide the numbers from the type plate.
INSTALLATION - SAFETY
Only a qualified contractor should carry out installation, commissioning, mainte-
nance and repair of the appliance.
General safety instructions
We guarantee trouble-free function and operational reliability only if original
accessories and spare parts intended for the appliance are used.
Instructions, standards and regulations
Note
Observe all applicable national and regional regula-
tions and instructions.
08

INSTALL- APPLIANCE DESCRIPTION
The appliance is intended to heat cold water and supply it to a single draw-off
point. The appliance must only be installed with an open (non-pressurised) tap.
This open vented (non-pressurised) appliance is only suitable for oversink
installation.
Standard delivery
The following are delivered with the appliance:
Wall mounting bracket
INSALLATION - PREPARATIONS
Flush the water line thoroughly.
Water installation
No safety valve is required.
Taps/valves
Sealed unvented taps are not permitted.
Install an open vented tap.
Installation site
Material losses
Install the appliance in a room free from the risk of frost.
Store the dismantled appliance in a room free from the risk of frost,
as water residues remaining inside the appliance can freeze and cause
damage.
Material losses
Mount the appliance on the wall. The wall must have sufficient
load-bearing capacity.
Note
Ensure that the appliance is freely accessible for maintenance work.
Always install the appliance vertically and near the draw-off point.
09

Material losses
The appliance is only suitable for oversink installation. The water
connections of the appliance point downwards.
Material losses
Connecting pipe length (from tap to appliance) may not exceed 1 m.
10

INSTALLATION
Appliance installation
Mark out the holes to be drilled on the wall (see chapter “Installation / Specifica-
tion / Dimensions nd connections”).
Drill the holes and insert suitable rawl plugs.
Secure the wall mounting bracket using suitable screws.
Hang the appliance on the wall mounting bracket.
Water connection
Material losses
Carry out all water connection and installation work in accordance
with regulations.
Material losses
The appliance may develop a leak and cease functioning.
Never subject the appliance to water pressure.
Never interchange the water connections.
Set the flow rate (see tap instructions). Observe the maximum
permissible flow rate with a fully opened tap (see chapters
"Installation & Data table").
Material losses
When tightening the fittings, counterhold with a suitable spanner.
Secure the water connections from the tap to the appliance
11

Power supply
WARNING Electrocution
Carry out all electrical connection and installation work in accord-
ance with relevant regulations.
WARNING Electrocution
When permanently connected to the power supply using a dedicat-
ed junction box, the appliance must be able to be isolated from the
mains power supply by an isolator that disconnects all poles with
at least 3 mm contact separation.
WARNING Electrocution
Ensure that the appliance is earthed.
Material losses
The voltage specified on the type plate must match the mains
voltage.
Observe the type plate.
The following electrical connections are permissible:
Permanent connection to a fuse spur with switch and earth conductor.
12

COMMISSIONING
WARNING Electrocution
Commissioning may only be carried out by a qualified contractor
in accordance with safety regulations.
IInitial start-up
Either open the DHW valve of the tap or set the mono lever mixer tap to “hot”
until the water that flows out is free of air bubbles.
Switch on power at the fused spur.
Select a temperature.
Check the entire hydraulic installation for tightness.
Note
If you fail to follow the correct sequence (first water, then power),
the high limit safety cut-out will trip.
Proceed as follows:
Disconnect the appliance from the power supply.
Fill the appliance with water.
Connect the appliance to the power supply.
Appliance handover
Explain the functions of the appliance to the user. Show the user how to
operate the appliance.
Make the user aware of potential dangers, especially the risk of scalding.
Hand over these instructions and, if applicable, the instructions for any
accessories.
13

SHUTDOWN
Isolate the appliance from the power supply by switching off at the fused spur.
Drain the appliance (see chapter "Installation / Maintenance / Draining the appli-
ance").
TROUBLESHOOTING
Problem Cause Remedy
The appliance does
not supply hot water.
The high limit safety
cut-out has tripped.
Remedy the cause of the fault.
If necessary, replace the tem-
perature controller. Allow the
appliance to cool down. If you
have isolated the appliance
from the power supply, the
high limit safety cut-out will
be reset automatically.
Loud boiling noises
inside the appliance.
The appliance is
scaled up.
Descale the appliance.
14

MAINTENANCE
WARNING Electrocution
Before any work on the appliance, disconnect all poles of the
appliance from the power supply.
Dismantle the appliance for maintenance work.
Draining the appliance
WARNING Burns
Hot water may escape during draining.
Drain the appliance via its connectors.
Opening the appliance
Pull off the temperature selector.
Remove the screws from the appliance cap.
Open the appliance cover by lowering the bolt screws inwards and pivot
the cover upwards, then remove it.
Descaling the appliance
Material losses
Never treat the cylinder surface with descaling agents.
Remove the flanged immersion heater.
Carefully tap the heating element to remove coarse limescale
deposits.
Immerse the heating element up to the flange plate in descaling
agent.
15

Checking the earth conductor
Pull off the temperature selector.
Check the earth conductor (in Germany, e.g. BGV A3) across a
temperature controller fixing screw and the earth conductor contact of
the power cable.
Replacing the power cable
The power cable must only be replaced by a qualified contractor with an
original spare part.
Note
Never remove the plastic thread holding the profile plate.
Positioning the temperature sensor in its protective pipe
When replacing the temperature controller, guide the temperature
sensor into its protective pipe.
Secure the temperature sensor in place below the earthed plug.
Ensure that the inserted legth is 200mm
16

c01 Cold water inlet Male thread G 1/2 A
c06 DHW outlet Male thread G 1/2 A
i13 Wall mounting bracket
DIMENSIONS
17

WIRING DIAGRAM
18

Country-specific approvals and certifications
The test symbols can be seen on the type plate.
Extreme operating and fault conditions
In the case of faults, a peak temperature up to 100 °C may briefly occur
in the system.
Details on energy consumption
The product data complies with EU regulations relating to the directive
on the ecological design of energy related products (ErP).
Heat-up performance
The heat-up period depends on the degree of scaling and residual heat.
The heat-up time for a cold water supply at 10 °C and a maximum
temperature setting 60oC will be achieved in 8 minutes
HEAT UP PROFILE
19