LEMET ECOWAY 50 Operation and Installation Manual

Brand
LEMET
Model
ECOWAY 50
Category
Water heaters & boilers
Type
Operation and Installation Manual

This manual is also suitable for

1
OPERATION AND INSTALLATION MANUAL
WALL-MOUNTED, UNVENTED ELECTRIC WATER HEATERS
LEMET GREENLINE 30, 50, 80, 100, 120 and 200 Liter (vertical and horizontal)
LEMET ECOWAY 50, 80, 100, 120 and 200 Liter
SMALL 5 and 10 liter (under sink and over sink)
GREENLINE ECOWAY SMALL
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Thank you for purchasing a Lemet electric water heater. An electric water heater is a device used to
heat water and store that water in a heated state by means of electricity. It is the ideal solution for light
commercial, industrial and domestic hot water requirements. Please read and understand this manual
before commencing to install the unit and leave the manual with the user.
ECOWAY, GREENLINE and SMALL water heaters can be installed only with the use of muffs
(domestic cold water inlet and domestic hot water outlet) facing downwards. They can work in a
pressurized system with one or more domestic hot water intake points. The vertical mounting method
is specified on the cover. The heater is highly insulated and can remain switched on at all times.
1. GENERAL WARNINGS
1. Installation must be undertaken by a competent, preferably certified, installer with knowledge
in the installation of unvented electric water heaters. The manufacturer shall not be liable for
damage resulting from incorrect installation or a failure to comply with this instruction manual.
The assembly must be performed by qualified staff having appropriate permissions, and
executed in accordance with the conditions contained in the manual. The installation must be
confirmed in the warranty card.
2. Do not use the water heater when frozen. Wait until the water flows again in the water heater
before using.
3. Do not attempt to repair, but call a certified installer. Failing to do so will void your warrantee.
4. The appliance may be used by children aged 8 and over and persons with reduced mental,
physical or sensory capabilities or lack of experience and knowledge only when they are
under supervision or they have been instructed on how to operate the heater safely and know
the risks. Children must never play with the water heater nor must they clean the heater or
service the water heater.
5. Always use the supplied pressure relief valve or a KIWA approved pressure relief valve.
Failing to do so will restrict the proper functioning of your water heater and can potentially
damage your water heater.
6. Failing to use the supplied pressure relief valve or a KIWA approved pressure relief valve will
void your warrantee.
7. Always install a stopcock on mains water supply line for easy installation and servicing.
8. IMPORTANT: We strongly recommend to install a pressure reducing valve if the water
pressure is too high (5 bar or more) or if you suffer from fluctuating water pressure. High water
pressure and/or fluctuating water pressure often occur in apartment building, flats, farms,
older houses and houses and buildings in elevated areas. Any damage caused by a too high
water pressure or fluctuating water pressure will not be covered by the warrantee.
Pressure reducing valve
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2.1 TECHNICAL DATA: ECOWAY
Picture 2.1
ECOWAY Electric water heaters
50L
80L
100L
Time of heating up to 65OC (Δt=45)
min.
80
125
160
Rated voltage
V/Hz
230/50
230/50
230/50
Electric heater power
W
2000
2000
2000
Maximum rated current
A
9,1
9,1
9,1
Temperature adjustment range
°C
20-75
20-75
20-75
Minimal/maximal rated temperature
°C
5/85
5/85
5/85
Maximum tank working pressure
Mpa
0,6
0,6
0,6
Connection port spacing
cm
10
10
10
Tank diameter/Total height
cm
44/56
44/80
44/93
Protection rating
IP
24
24
24
Net weight (without water)
kg
17
23
27
1. Domestic cold water inlet (BLUE
marking)
G 1/2" W/F
2. Domestic hot water outlet (RED
marking)
G 1/2" W/F
3. Casing
4. Casing driver with control panel
5. Cable with plug*
6. Pressure relief valve
7. Drain valve (install a discharge pipe
underneath)
8. Stopcock on mains water supply line
inlet
9. Stopcock on hot water outlet
10. Discharge pipe to drain of expansion
water
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2.2 TECHNICAL DATA: GREENLINE (Vertical and Horizontal)
Picture 2.2.1 Picture 2.2.2
G 1/2" W/F
G 1/2" W/F
4. Housing with signal lamp and temperature
control
8. stopcock on the mains water supply line
GREENLINE Electric water heaters
50L
60L
80L
100L
Time of heating up to 65OC (Δt=45)
min.
80
95
125
160
Rated voltage
V/Hz
230/50
230/50
230/50
230/50
Electric heater power
W
2000
2000
2000
2000
Maximal rated current
A
9,1
9,1
9,1
9,1
Temperature adjustment range - up to
°C
75
75
75
75
Minimal/Maximal rated temperature
°C
5/85
5/85
5/85
5/85
Maximum tank working pressure
Mpa
0,6
0,6
0,6
0,6
Connection port spacing
cm
10
10
10
10
Tank diameter/Total height
cm
44/56
44/63
44/80
44/93
Protection rating
IP
24
24
24
24
Net weight (without water)
kg
17
19
23
27
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2.3 TECHNICAL DATA: SMALL
Picture 2.3
1. Domestic cold water inlet (BLUE marking)
G 1/2" W/F
2. Domestic hot water outlet (RED marking)
G 1/2" W/F
3. Casing
4. Signal lamp and temperature control
5. Cable with plug*
6. Pressure relief valve
7. Drain valve (install a discharge pipe underneath)
8. stopcock on the mains water supply line
9. Stopcock on hot water outlet
10. Under sink pressure version: Discharge pipe to drain of expansion water
10. Over sink non pressure version: three-way tap over sink
11, Under sink non pressure version: three-way tap under sink
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Over sink
Type
10.5NE
10.10NE
Under sink
Type
10.5PE
10.1NE
Nominal capacity
L
5
10
Warm-up time (1500W**) to 65 °C (?t=45 °C)
min
11
23
Warm-up time (1200W**) to 65 °C (?t=45 °C)
min
13
27
Warm-up time (1000W**) to 65 °C (?t=45 °C)
min
26
37
Rated voltage
230/ 50 Hz
230/ 50 Hz
Maximum rated current
6,5A (1500kW**)
6,5A (1500kW**)
5,2A (1200W**) / 4,3A (1000W**)
Maximum working temperature and pressure
85 °C/ 6 bar
85 °C/ 6 bar
Temperature adjustment range
7-65
7-65
Height-width-depth
cm
42-25-22
44-29-26
Protection class
IP
24
24
Magnesium anode
Type
25 X 150
25 X 150
Net weight
kg
5
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2.4 CONSTRUCTION
The heater tank is made of sheet steel covered with ceramic coating, which constitutes a passive
corrosion protection. An additional corrosion protection is a magnesium anode. In the tank bottom
there is a flange with a flanged lip fastened with bolts or a plug. A heater and a magnesium anode are
installed in the flanged lip or in the plug. In the ECOWAY, GREENLINE models the insulation is made
of polyurethane foam, whereas in the SMALL model with polystyrene.
Water is heated by an electric heater, which in the GREENLINE and SMALL models is controlled by a
thermostat and in the ECOWAY model by means of an electronic controller. An overheat protection
of water heated by the electric heating element is in this case a non-automatic temperature limiter,
which disconnects the electric circuit when the water temperature rises too high. This limiter requires
manual start in order to restart the heater. In the housing of the heating element control system there
is a lamp signalling the operation of the electrical heating element.
Two connection muffs are lead from the housing; in the ECOWAY, GREENLINE and SMALL models,
connection of cold water is marked with a blue band, and the outflow of hot water is marked with a red
band.
3. INSTALLATION
Overview
COMPONENTS CHECKLIST
✔
Water heater
6 bar pressure relief valve ½”
Unassembled UK plug
General installation instructions
Installation must be undertaken by a competent, preferably certified, installer with knowledge
in the installation of unvented electric water heaters. The manufacturer shall not be liable for
damage resulting from incorrect installation or a failure to comply with this instruction manual.
The assembly must be performed by qualified staff having appropriate permissions, and
executed in accordance with the conditions contained in the manual. The installation must be
confirmed in the warranty card.
Make sure the stopcock on the mains water supply line is closed before commencing to install
the water heater
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Lemet Greenline and Ecoway can only be installed vertically. Lemet Horizontal can only be
installed horizontally with the hot water outlet and cold water inlet facing downwards
Fit all components supplied
The water heater is not suitable for outdoor installation
It is forbidden to install the heater in places with explosion hazard, in a location with acid
vapors and/or dust, or in gas-saturated environments or exposed to freezing temperatures,
causing the freezing of water in the tank, in the places where the heater must be exposed to
water vapor. In the case of the assembly, installation, and operation of the water heater in
unusual places (e.g. in the attic, indoors in rooms with floors sensitive to water, in cabinets,
etc.), it is necessary to take into account the possibility of the possible water leakage and in
connection with that, take appropriate preventive measures enabling the connection of water
and its drainage in order to prevent secondary damage
IMPORTANT: We strongly recommend to install a pressure reducing valve if the water
pressure is too high (5 bar or more) or if you suffer from fluctuating water pressure. High water
pressure and/or fluctuating water pressure often occur in apartment building, flats, farms,
older houses and houses and buildings in elevated areas. Install a pressure reducing valve
where your mains water supply line enters your premises or right behind the pressure relief
valve. Ensure the water pressure is set at 3 bar. Any damage caused by a too high water
pressure or fluctuating water pressure will not be covered by the warrantee.
Pressure reducing valve
3.1 Connection to the water supply system
The heater must be connected to the mains water supply in such a way that it allows easy
disconnection for maintenance without damaging the connections and destroying the installation. The
minimum free space must be 30 cm for easy access in case you need to replace the heating element
or the anode. It is forbidden to cut the connection muffs to the water supply system, since this may
cause damage of the corrosion protection coating.
The connection of cold water is marked with a blue band, and the outflow of hot water is marked with a
red band.The tanks may only be connected to the mains water supply whose water is compliant with
the requirements of the Council Directive 98/83/EC of 3 November 1998 on the quality of water for
human consumption and competent in the field of the national legislation.
It is forbidden to apply plastic hoses for connection, which are not adapted to temperatures higher
than 110C and pressure exceeding 1.0 Mpa. It is recommended to use flexible connection hoses
specifically designed for hot water. Always use pressure and temperature resistant pipes and
connectors.
Models: Lemet Greenline vertical/ Greenline Horizontal/ Ecoway vertical/ Small - assembly in
pressurised version
The water heater can be connected to a water supply system with the pressure not exceeding the one
determined for a given tank type in chapter TECHNICAL DATA.In the domestic hot water installation,
it is recommended to install a diaphragm vessel for domestic water in order to minimize the effects of
the so-called "hydraulic impact" or sudden pressure surges.
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Always install a pressure relief valve. Use the supplied pressure relief valve or a KIWA approved
pressure relief valve or your warrantee will become void. The pressure relief valve is essential. The
pressure relief valve must remain open to atmosphere. The supplied pressure relief valve contains a
safety valve with the initial opening pressure of 0.6 MPa (6 bar) and a non-return valve.
1) The non-return valve: prevents hot water from the water heater returning to the water mains
preventing water hammer.
2) The safety valve: The tank operating pressure is 6 bar. Once the water heater heats up the
tank will become pressurized. The safety valve will release pressure when the pressure inside
the tank exceeds 6 bar by releasing drops of expansion water. This is perfectly normal.
If you use a KIWA approved pressure relief valve ensure it is 6 bar and has a safety valve plus a non-
return valve.
Do not obstruct the pressure relief valve that is connected to the cold water inlet side of the water
heater. The cold water inlet side is marked BLUE. Please observe the maximum pressure as specified
in the technical data tables.
Regularly activate the pressure relief valve to prevent it from becoming blocked e.g. by limescale
build-up.
Preferably install the pressure relief valve directly onto cold water inlet side of the water heater (BLUE
marking), but never further than 2 metres away from the water heater. The arrow on the pressure relief
valve must be compliant with the direction of the utility water flow, and the inlet opening of the
pressure relief valve cannot be directed upwards.
It is necessary to ensure expansion water is properly discharged, so that the discharged water does
not drip on the heater and other items in its vicinity. Ensure the expansion water drains of
uninterruptedly. Here are three option how to drain of properly.
1. The supplied pressure relief valve: You have to connect a plastic hose (supplied with your
water heater free of charge) to the orifice on the pressure relief valve facing downwards to
drain of expansion water uninterruptedly to a drain.
2. A KIWA approved safety relief valve: If you have installed a KIWA approved safety relief
valve, install a discharge pipe (with our without a drain valve as pictured) directly below the
pressure relief valve to drain off any drops of expansion water. Install the discharge pipe
connected to the pressure relief valve facing downwards to drain of uninterruptedly.
3. A KIWA approved pressure relief valve and an expansion vessel: You can opt to install an
expansion vessel and KIWA approved pressure relief valve to reduce water leakages from
that pressure relief valve as much as possible and to relieve pressure from the water heater.
Size the drain so that the drops of water can drain off uninterrupted when the safety valve inside the
pressure relief valve is fully opened.
In the case that the resting pressure in the water supply network exceeds 0.5 Mpa, it is necessary to
install a pressure reducing valve (on the water connection to the building) due to the possibility of
occurrence of sudden water pressure surges exceeding 0.6 Mpa (increased pressure at night, the
phenomenon of sudden surges of pressure in the case of breaks in the water intake).
Always drain the water heater as instructed in the MAINTENANCE chapter 7.2.
3.2 Connection to the electrical system
The heater must be connected to the power supply network equipped with a differential switch and
have a protective earthing connection. An unearthed connection to the network endangers the human
health and life.It is forbidden to apply fuse elements over 16A in the electrical circuit supplying the
heater.Do not use splitters or terminal blocks.
STEP-BY-STEP INSTALLATION
1. Determine where you want to install your electric water heater and measure if the unit will fit in
the space you’d like to install it. The place of mounting the heater must be compliant with its
protection class and PN-HD 60364-7-701:1999. The installation must allow for an easy
assembly and disassembly of the heater, without damaging the connections and the
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installation. Leave 30 cm of space underneath the water heater to allow easy access for
servicing.
2. Ensure the wall is strong enough to support the water heater. Bear in mind that the weight will
be the unit plus water, so the wall will have to be strong enough to support that combined
weight.
3. The heater must be installed using plugs and screws with sufficient lifting capacity and type
adapted to the wall; two on each hanger.
4. During the assembly, it is necessary to pay attention to the length of the power cord and the
distance to the power socket.
5. When installing the heater, it is necessary to pay special attention to the location of the
pressure relief valve, so that the discharge of expansion water from the pressure relief valve is
uninterrupted.
6. Measure and mark with a waterproof marker where you need to drill the holes for the plugs to
mount the water heater. Before drilling the holes ensure the holes are level using a spirit level.
Some water heaters come with a template to mark the holes. This template can be found
either inside the box or is printed on the box.
7. Drill holes, mount the plugs and fit the mounting bolts or screws (depending on the model).
8. Place the electric water heater onto the wall. Make sure it is fitted securely.
9. Tighten the mounting bolts or screws (depending on the model) solidly, so the electric water
heater is flush against the wall.
10. Cover ALL threaded fittings with Teflon tape to avoid water leakage. Turn the tape anti-
clockwise onto the threaded fitting. Use teflon tape on the threaded fitting waterproofing the
fitting. Some electric water heater brands have a special coating on the threaded fitting. You
can easily remove this coating by using a wire brush and then use the teflon tape and cover
the threaded fitting.
NEVER remove the polyurethane foam inner layer of the electric water heater found on both
the inlet and outlet of the electric water heater. This ensures the sealing of the electric water
heater
11. Now install the supplied 6 bar approved pressure relief valve or a KIWA approved 6 bar
pressure relief valve as close as possible to the water heater. The pressure relief valve must
remain open to atmosphere and never further away than 2 metres from the water heater.
Always install the pressure relief on the cold water inlet side of the water heater (the BLUE
marking).
IMPORTANT: Do not overtighten the pressure relief valve. If you overtighten you can damage
the safety valve inside or the valve inside can remain open. This will cause water hammer
leading to excessive calcification.
See picture 2.1 on how to install the pipeworks, pressure relief valve, stopcock, drain valve,
discharge pipe and fittings.
IMPORTANT: Use ONLY the supplied 6 bar pressure relief valve or a KIWA approved
pressure relief valve! If you DO NOT use one of these pressure relief valves your
warrantee will be void as a different pressure relief valve can damage the water heater.
12. There may be a small amount of dripping (expansion water) from the pressure relief valve
during the heating stage. This is completely normal. To allow this water to drain away
uninterruptedly ensure the following:
A. The supplied pressure relief valve: You have to connect a plastic hose (supplied with your
water heater free of charge) to the orifice on the pressure relief valve facing downwards to
drain of expansion water uninterruptedly to a drain.
B. A KIWA approved safety relief valve: If you have installed a KIWA approved safety relief valve,
install a discharge pipe (with our without a drain valve as pictured) directly below the pressure
relief valve to drain off any drops of expansion water. Install the discharge pipe connected to
the pressure relief valve facing downwards to drain of uninterruptedly.
C. A KIWA approved pressure relief valve and an expansion vessel: You can opt to install an
expansion vessel and KIWA approved pressure relief valve to reduce water leakages from that
pressure relief valve as much as possible and to relieve pressure from the water heater.
13. Always install pressure and temperature resistant water pipes to the mains water supply line.
Connect both the hot water outlet and cold water inlet side of the electric water heater with
these pipes. DO NOT overtighten the connectors as you can damage the connection causing
water leakage.
14. Do not plug the power cord in yet as you have to fill the water heater first. See commissioning
(chapter 4)
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IMPORTANT: The Lemet water heater operates with a working pressure of 6 bar. Always
use the supplied 6 bar pressure relief valve or a 6 bar KIWA approved pressure relief
valve. If you have it fitted by an installer please instruct your installer use one of these
pressure relief valve for the water heater to function properly and to avoid any
problems. Moreover, failing to do so will void your warrantee.
4. COMMISSIONING: STARTING THE HEATER
1. To fill the water heater gently open the stopcock of the mains water supply until it is fully
opened. Now open a warm water tap of a washbasin. Once both tanks are full you will notice
that water flows out in a steady, forceful jet from the warm water tap in the washbasin. You will
no longer see spurts of water coming out of the warm water tap due to air inside the heater.
Both tanks are now full.
2. Close the warm water tap in the washbasin, but keep the stopcock of the mains water supply
fully open. Always keep that stopcock fully open.
3. Now switch on the electric water heater by plugging in the power cable into the socket.
4. After filling, it is necessary to check the tightness of the installation and the tightness of the
heater. If there is a leakage of water from under the flange cover or the heating element,
tighten it so as not to damage the thread.
5. Set your electric water heater to the desired water temperature using the analogue controller.
Preferably set the temperature at 65 degrees celsius to ensure an even longer lifespan of your
water heater.
6. GREENLINE and SMALL: set the temperature with the thermo regulator knob. It is
recommended to set the knob in just below the MAX setting of the regulation scope, i.e. about
65-70 °C. The lamp lighting up means the correct operation of the heater - the electric heating
element is working fine. In order to temporarily shut down the heater from the flow, it is
necessary disconnect it from the power supply.
ECOWAY: Set the required working mode in the ECOWAY model. It is recommended to set
the ECO+ mode as you will have optimal heater efficiency in this mode. It will also increase its
service life. In order to temporarily shut down the heater, it is necessary to turn off the
controller.
4.1 ECOWAY: control panel
1 ON/OF button
2 ECO+ button - turns on the ECO+ mode
3 PROG button - changes the working mode (manual/eco+ programmer) and the settings of the
DAILY TIME PROGRAMMER. That allows you to set 3 different time ranges (P1, P2 and P3) for
optimized use of electric tariffs and minimized the electric power consumption.
4 Up/down buttons - are used to change the settings of the value displayed on the LED display
5 OK button - confirms the selection
6 Heating element LED - lights up when water is being heated
7 Power supply LED - lights up when the controller is supplied with electricity
8 DAILY TIME PROGRAMMER LEDs - light up when the controller is in the DAILY TIME
PROGRAMMER mode and displays the current program running. Program P1 - P1 LED lights up.
Program P2 - P2 LED lights up. Program P3 - P1 and P2 LEDS light up
9 ECO+ mode LED - lights up when the controller is in the ECO+ mode or flashes when learning the
ECO+ mode
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10 Manual LED - lights up when the controller is in the manual mode
11 LED display - the current settings/data, as well as data necessary to program the controller
4.2 ECOWAY: Setting the clock and day of the week during commisioning
Turn the controller on, and then, using the PROG button, go to manual mode. Press and hold the
PROG button; the display will show the date in the dd:xx format, where xx (flashing) means the day of
the week, and then, using the up and down buttons, set the day of the week and confirm with OK. The
day is represented by digits, where: 1-Monday, 2-Tuesday..... , 7-Sunday
Then the display will show the time in the hh:mm format (hh - hour, mm - minute); using the up and
down button, set the time (flashing digits) and confirm with OK, and then the minute will flash, and
then again using the up and down button, set the minute and confirm with OK.Each change of the
settings causes the reset of the ECO+ function and restarts learning.
4.3. ECOWAY: Operating modes and their settings
4.3.1 MANUAL MODE
In this mode we set the required heater temperature manually. To set the MANUAL mode, press the
PROG button until the MANUAL LED lights up. Using the up/down keys, set the required temperature
within the scope of 20 to 75°C and after setting and approx. 3.5 sec, the controller will display the
required and current temperature.
4.3.2 ECOWAY: ECO+ WORKING MODE
It is a mode in which the controller learns when and in what amount hot water is used (studying your
hot water consumption). During the first week of learning, the controller maintains the water temp in
the tank at the level of 70 °C, in the subsequent weeks at 45 °C (or other temp. depending on the
selection of the user in the service menu), and it heats the water in advance to make it available at the
right time and in the right amount, depending on the expected hot water usage.
This allows us to minimize the use of electric power needed to maintain the required water
temperature in the tank. In the service menu, in the case of regular use of domestic hot water, it is
recommended to set temp. ECO+= 35 °C and if it is irregular, ECO+= 45 °C. To reset the ECO+
program learned by the controller (restarting learning), it is necessary to press and hold the ECO+
button.
To set the ECO+ mode it is necessary to: press the PROG button until the ECO+ LED lights up or
press the ECO+ button; the display will show ECO and the current water temp. in the tank
interchangeably, in accordance with the pattern below. The ECO+ mode can also be set at any time
period of the DAILY TIME PROGRAMMER.
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4.3.3 ECOWAY: DAILY TIME PROGRAMMER. SET 3 SEPARATE TIME RANGES
In this mode we program three time periods and set the temperatures/ECO+ mode for them. It is
recommended to use this working mode in the case of having two electricity tariffs (day and night). In
order to minimize the energy costs, it is advisable to set the maximum temperature for the night tariff,
and the ECO mode for the day tariff. The factory settings of the programmer are shown below:
P1 from 1:00 PM to 3:00 PM temp. 70°C; P2 from 22:00 PM to 6:00 AM temp. 70°C; P3 ECO+ mode
To set the DAILY TIME PROGRAMMER, press the PROG button until the programmer LED(s) light up
(P1, P2), then press and hold the PROG button - stages of programmer settings:
a - The display shows P1S (beginning of program 1). In this mode the display shows the time in hour:
minutes (hh:mm format). The hour digits flash; use the up and down buttons to change to the right
hour. Press OK to confirm setting. Now the minutes digits will start to flash; use the up and down
buttons to change to the right hour. Press OK to confirm setting.
b - The display shows P1E (end of program 1). Again time is shown in the hour:minute format. The
hour digits flash; use the up and down buttons to change to the right hour. Press OK to confirm
setting. Now the minutes digits will start to flash; use the up and down buttons to change to the right
hour. Press OK to confirm setting.
c - The display shows P1 °C (temp. of Program 1). The display temperature appears or the word ECO
(provided that the program ECO+ mode is set); Press the up and down buttons to select the
temperature for the first program. Or press the ECO+ button selecting the ECO+ mode for the first
program and confirm with OK.
d - The display shows P2S (beginning Program 2) In this mode the display shows the time in hour:
minutes (hh:mm format). The hour digits flash; use the up and down buttons to change to the right
hour. Press OK to confirm setting. Now the minutes digits will start to flash; use the up and down
buttons to change to the right hour. Press OK to confirm setting.
e - the display shows P2E (end of Program 2) Again time is shown in the hour:minute format. The hour
digits flash; use the up and down buttons to change to the right hour. Press OK to confirm setting.
Now the minutes digits will start to flash; use the up and down buttons to change to the right hour.
Press OK to confirm setting.
f - The display shows P2 °C (temp. of Program 2). The display temperature appears or the word ECO
(provided that the program ECO+ mode is set); Press the up and down buttons to select the
temperature for the first program. Or press the ECO+ button selecting the ECO+ mode for the first
program and confirm with OK.
g - The display shows P3 °C (temp. of Program 3). The display temperature appears or the word ECO
(provided that the program ECO+ mode is set); Press the up and down buttons to select the
temperature for the first program. Or press the ECO+ button selecting the ECO+ mode for the first
program and confirm with OK.
Program P3 works when program P1 and P2 program are not running. That is why you do not need to
set a time. In the event of the overlapping of program P1 and P2 in time, the controller will implement
program P2, which takes precedence.
13
4.4 ECOWAY: Other functions / running in the background
4.4.1. Dry stop function - protects the heating element against damage as a result of the lack of water
in the tank. Please note, that you can never switch on a tank that holds no water. In that case the Dry
stop function will not prevent damage. The function is activated at any time when the heater starts
working and lasts for 1.5 min. and may not be stopped. At this time, the HEATER LED will continue to
be lit even if we change the program or temperature setting.
4.4.2. Anti-freezing function - is activated when the controller is off (only the power LED is lit). It
prevents the water in the tank from freezing by turning on the electrical heating element.
4.4.3. Anti-legionella function – Operates automatically. Every 14 days, the controller heats the water
in the tank to 75°C to disinfect the tank surface and eliminate any possibly present legionella
bacteria,
4.4.4. Temperature limiter function - prevents overheating of the water in the tank - In case the water
temperature increases excessively, the electricity supply to the heating element is disconnected at
both poles.
4.4.5. Hysteresis function - the controller turns on the heating element when the water temperature
drops by 2°C below the set temp., which allows for lowering the number of switching cycles and
increases the service life of the heating element and the controller components.
4.4.6. Clock - displays the programmed time in the controller; to display the clock, press OK.
4.4.7. Active protection - a set of relays which disconnects the electric heating element on two poles,
which increases the safety of work of the heater by eliminating the possible risk of electric shock.
4.5. ECOWAY: Error codes
Er01 - the temperature limiter was triggered - exceeding the permissible water temp. inside the tank.
Before re-connect the heater, it is necessary to remove the plug from the socket for at least 5 minutes
and wait till the water temperature drops.
Er02 - the driver has detected the lack of water in the tank. To clear the error, press OK. That switches
the driver off and will cut of the power to the heater for 20 minutes and then resume normal operation.
In the case of frequent Er01 messages and the fluctuation of water temp at the tank supply, it is
recommended to turn the detection of the lack of water from the service menu - item 7.7.
AL or AH - damage to the temperature sensor or a decrease in temperature below 0 °C or rise above
99°C, it is necessary to call your supplier to replace the sensor.
4.6 ECOWAY: Service menu
To navigate to the service menu, it is necessary to turn the driver off (the POWER LED is lit), and then
hold the PROG button. The display will show Fx yy (yy flashing) where x is the number of the
parameter and yy is its value. Use the up / down keys to change the value, and OK to confirm and
move to another parameter; after editing the last parameter (6), the driver will exit the service menu.
Each entry to the service menu causes the reset of the ECO+ function and restarts learning.
Code
Description
Scope of
adjustment
Factory
setting
F1
Status of the anti-legionella function (0 - OFF; 1 -
ON.)
0 / 1
1
F2
Frequency of work of the anti-legionella function
7 - 21 days
14 days
F3
Time of the anti-legionella function initiation
0 - 23 hours
1 hour
F4
Status of the function of the lack of water in the
tank (0 - OFF; 1 - ON.)
0 / 1
1
F5
Frost protection temperature
5 - 10 °C
7 °C
F6
Temp. for the ECO+ mode (at which the driver
will aim)
35 - 45°C
45°C
14
5. USE/OPERATION
5.1 Safety of use
All repairs to the water heater should be entrusted only to professionals with appropriate qualifications.
It is forbidden to remove the cover if the heater is connected to the electricity network. It is necessary
to adhere to the provisions of this OPERATION AND INSTALLATION MANUAL.
Models: ECOWAY/GREENLINE and SMALL- assembly in pressurized version:
If water vapor is emitted from the water tap or hot water outlet, it is necessary to leave the tap/outlet
open and immediately disconnect the heater from the electrical network. Report the incident to the
manufacturer or your supplier. Using the heater, which emits water vapor is a threat to the human life
and health. Do not operate the heater without a working pressure relief valve. Do not prevent water
from dripping from the pressure relief valve, do not block the pressure relief valve discharge pipe. Do
not operate the heater if there is no flow of water through the pressure relief valve. The manufacturer
shall not be liable for any valve malfunctions caused by its improper installation and errors in the
system. It is necessary to control the pressure relief valve regularly in accordance with its instruction
manual.
5.2 Operation
In the GREENLINE and SMALL models the heater operation is reduced to setting the temperature
regulator by means of the thermo regulator knob; in the housing there is also a control lamp of the
heating element operation.
In the ECOWAY model, the operation is reduced to setting the controller.In the ECOWAY,
GREENLINE and SMALL models it is necessary to check the heater protection at least once a year by
measuring the effectiveness of neutral earthing.
5.3. Cleaning, maintenance, and replacement of the magnesium anode
The heater should be cleaned with a damp cloth without the use of aggressive abrasive cleaning
agents. It is recommended to have a qualified installer rinse the heater off sludge. To maintain the
heater in good performance, it is necessary to remove limescale from the heating element regularly,
by means of appropriate chemical agents or by crushing the limescale layer with a delicate, blunt tool,
such as a wooden spatula, so as not to damage the surface of the heater.
It is recommended to have a qualified installer descale the tank. You can also opt to do it yourself. A
factory-installed or new magnesium anode shall be replaced on one's own and at one's own expense
regularly, however, at least every 24 months from the initial date of the warranty period; it is
recommended to have a specialized company replace the anode. Again you can also replace it
yourself. It is necessary to keep the proof of purchase of the magnesium anode, the worn anode, and
the replacement confirmation with a date and a stamp for inspection by the service station in case of
the tank failure.
The anode type is specified in chapter 2 Technical data. An efficiently working magnesium anode is a
condition of maintaining the warranty. The necessity to replace the magnesium anode is caused by its
gradual wear which is largely dependent on the chemical composition of the water and the operating
temperature of the heater, therefore, in order to maintain the optimum protection of the tank against
corrosion, it is necessary to replace it.
Any damage to the tank caused by the wear of the anode (which results in the improper protection of
the tank) is considered to be caused by the fault of the user and in this case is not covered by the
warranty. To replace the magnesium anode see chapter 7.4.
15
6. DEFECTS AND TROUBLESHOOTING
7. MAINTENANCE
The great advantage of an electric water heater is that is low maintenance. However this does NOT
mean it is maintenance-free. A water heater does require maintenance from time to time.
7.1 Venting or bleeding the water heater
Switch the power off by disconnecting the power cord from the socket. Open a warm water tap. Make
sure the stopcock of the mains water supply is fully open. You can now hear it fill. That noise will stop
once it is completely filled. The unit is entirely filled once the water flows out in a forceful jet from the
opened warm water tap. Now connect the plug to the socket and switch the heater back on.
7.2 Draining the water heater
Take the power cord from the power socket. Place a bucket underneath the cold water inlet side
(BLUE marking). Close the stopcock on the mains water supply and then remove the pressure relief
valve plus the discharge pipe. Put your finger on the domestic cold water inlet side (BLUE marking)
and connect a water hose to that BLUE side to drain the water. Now disconnect the copper pipe or
flexible (pressure and heat resistant) pipe attached to the hot water outlet side (RED marking) to let air
in, so the tank will empty. To speed up this process you could push some air into the hot water outlet
side, with a bicycle pump.
7.3 Thermal cut-out reset
This unit contains a manually re-settable thermal cut-out that will switch the power off if the
temperature reaches an abnormally high level. Just push the white pin inside the thermostat and you
will reset it.
16
7.4 Decalcifying the water heater and how to replace the anode
1. Take the power cable out of the power socket
2. GREENLINE: remove housing with signal lamp and temperature control ( Part 4 on picture
2.2.1 and 2.2.2) underneath of the electric water heater and take of the temperature knob.
ECOWAY: remove casing with driver (Part 4 on picture 2.1)
3. Once you have taken of the housing/ casing you will see a round disk (a flange) fitted with
bolts
4. Close the stopcock on the mains water supply line
5. Drain the electric water heater through the cold water inlet side (BLUE marking). See how to
drain the water heater in chapter 7.2: Draining the water heater how to drain the water heater
6. Remove the thermostat (with the thermal cut-out) from the flange
7. Loosen the bolts of the flange to separate the flange (with heater element and anode attached
to it) from the tank.
8. Now remove the electric heater element and the anode from the flange by loosening the bolts
that fix both to the flange.
9. Remove any incrustation from the electric heater element with a steel brush. You can also
soak it overnight, in a bucket of kitchen grade vinegar. Replace the anode.
10. Fix the cleaned heater element and the new anode with the bolts to the flange. Put the flange
aside
11. Use a water hose to rinse out any limescale from inside the tank. Alternatively take the water
heater from the wall, place the unit in the bathtub or in the shower and use the shower hose to
rinse out any limescale from inside the tank
12. Once the tank is cleaned fix the flange with heater element and anode back on the tank.
Replace the rubber between the flange and the tank. Tighten the bolts of the flange to attach
the flange to the tank.
13. Put the thermostat onto the flange
14. Close the cover and put temperature knob back onto the cover and the thermostat
15. Now hang the water heater back on the wall
16. Reinstall the pipe or flexible hose to the hot water outlet side (RED marking), attach the
pressure relief valve to the cold water inlet side (BLUE marking) and reinstall the pipe or
flexible hose (with a stopcock) that connects the mains water supply line to the pressure relief
valve.
17. Fully open the stopcock on the mains water supply line to refill the tank. Meanwhile open a
warm water tap. The unit is entirely fillled once the water flows out from the tap in forceful,
uninterrupted jet.
18. Only then switch the power back on.
8. WARRANTEE
MODELS: ECOWAY, GREENLINE AND SMALL
Warranty on the tank tightness - ....... ,
Other parts / components - .......,-
The warranty period is calculated from the data of sale entered in the warranty card and
confirmed with a purchase document.-
Warranty outside the Republic of Poland is exercised by the local distributor/importer.-
17
The Guarantor ensures smooth operation of the heater under the condition that it will be
installed and used in accordance with the instruction manual.-
Within the warranty period, the user shall be entitled to free repair of damage to the heater
resulting from other causes inherent in the product. Outside the Republic of Poland, the
deadline for the removal of the device defects shall be governed by the legislation of a given
country or the warranty of an authorised distributor/importer.-
The warranty repair does not apply to activities provided for in the instruction manual, which
the user is obliged to perform on their own and at their own expense.-
The warranty does not cover the defects caused by the misuse, repairs or modifications by
unauthorised persons, as well as the assembly and operation of the device not in accordance
with this instruction manual.-
The warranty does not cover any damage caused by random events (storms, fires, floods),-
In case of malfunctions, it is forbidden to disassemble the unit; the defect should be reported
to the guarantor. It is necessary to keep the proof of purchase of the heater along with a
warranty card stamped at the point of purchase, to be inspected by the service.-
In the case of the lack of free access to the heater for its maintenance, repair or replacement,
the guarantor or the service designated by them shall not be liable for any inconvenience and
costs caused by the disassembly or the installation.-
The repair method is determined by the guarantor.-
The guarantor shall not be liable for the pressure relief valve malfunction or improper
installation, e.g. the lack of cold water pressure reducer (it applies to the assembly in the
pressurised version),-
The guarantor shall not be liable for the malfunction of the three-way tap, improper assembly
and improper installation (it applies to the assembly in the non-pressurised version).-
In cases not regulated by these conditions, the local regulations shall apply.
Any use of the heater without a working pressure relief valve or any mechanical damage shall
void the warranty. Damage caused as a result of a faulty pressure relief valve (usually
"bloated" tank or cracked cylinder) is not covered by the warranty (it applies to the assembly in
the pressurised version).-
Using the heater in water supply networks with a pressure greater than the one specified by
the manufacturer without a working water pressure reducer shall void the warranty (it applies
to the assembly in the pressurised version).
The manufacturer reserves the right to introduce modifications of the newly manufactured
devices without prior notice.-
The basis for any warranty repairs shall be the warranty card that is properly filled out and
stamped at the point of sale and the installer, without any amendments, as well as the proof of
purchase. The possible duplicate of the warranty card can be issued by the guarantor upon
the submission of the necessary documents.
The manufacturer shall not be liable for the water quality (any chemical compounds present in
it, the oxygen content in the water) and any inconvenience in the operator of the heater
connected with the above.-
Any repairs and modifications by unauthorised persons shall void the warranty.-
Any mechanical damage to the tank (heater) shall void the warranty.
In the case of an unjustified call of the warrantor to make repairs, any resultant costs shall be
incurred by the user,
The device must be stored at a positive temperature in dry rooms, free of dust and aggressive
substances, protected against mechanical and chemical damage,-
Regular replacement and working magnesium anode is a prerequisite for maintaining the
warranty on the tank.
Any damage to the tank caused by the wear of the anode (which results in the lack of
protection of the tank) is considered to be caused by the fault of the user and in this case are
not covered by the warranty.
A failure to replace the magnesium anode in the intervals determined in the warranty card
shall be the basis for the refusal to perform the warranty repair and shall void the warranty.-
Used magnesium anode is faulty.
9. OTHER INFORMATION
It is forbidden to put the used equipment together with other waste - the heater mass is given in
Chapter 2.The heater contains elements which are potentially dangerous to the environment,
therefore, at the moment it is worn, it shall be submitted to a specialised recycling company, to the
point of sale or to recycling organisations via collection points.
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LEMET ECOWAY 50 Operation and Installation Manual

Brand
LEMET
Model
ECOWAY 50
Category
Water heaters & boilers
Type
Operation and Installation Manual
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