Viessmann VITOWELL comfort User manual

Installation And Operation Manual
ELECTRIC STORAGE WATER HEATER
ENGLISH
Please read this manual carefully, before installation, usage and maintenance.
6194193 07/2023

1
Safety------------------------------------------------------------------2
General warnings ------------------------------------------------------------------------------------2
Key to symbols -------------------------------------------------------------------------------------2
General safety norms--------------------------------------------------------------------------------2
Specific safety norms for this appliance------------------------------------------------------------3
Appliance description--------------------------------------------------------4
Appliance profile-------------------------------------------------------------------------------------4
Appliance norms-------------------------------------------------------------------------------------6
Appliance installation--------------------------------------------------------6
Packing list------------------------------------------------------------------------------------------ 6
Installation norms (for the installer) ------------------------------------------------------------------6
Installing the appliance------------------------------------------------------------------------------6
Installation steps ------------------------------------------------------------------------------------7
User instructions----------------------------------------------------------- 10
Wiring diagram and technical parameters ---------------------------------13
Advice for user-------------------------------------------------------------------------------------10
Control and operating instructions-----------------------------------------------------------------10
Wiring diagram--------------------------------------------------------------------------------------13
Technical parameters-------------------------------------------------------------------------------14
Maintenance instructions---------------------------------------------------15
Maintenance regulations----------------------------------------------------------------------------15
Cleaning the outer parts-----------------------------------------------------------------------------15
Safety valves---------------------------------------------------------------------------------------15
Periodic maintenance-------------------------------------------------------------------------------15
Troubleshooting-----------------------------------------------------16
Fault analysis ---------------------------------------------------------------------------------------16
Contents

Safety
GENERAL WARNINGS
1. This manual is an integral and essential part of the appliance. It should be preserved with care and
transferred alongside the appliance if the latter is transferred to another owner or user and/or moved to
another location.
2. Carefully read the instructions and warnings contained in this manual. They provide important information
for the safe installation, use and maintenance of your new appliance.
3. The installation should be performed by a competent person in accordance with the instructions contained
herein.
4. The use of this appliance for purposes other than those specified is strictly forbidden. The manufacturer is
not to be held responsible for any damage due to improper, incorrect and unreasonable use or due to failure
to comply with the instructions set forth herein.
5. Installation, maintenance and all other interventions must be carried out by a competent person in full
conformity with the applicable legal regulations and the directions provided by the manufacturer.
6. Incorrect installation can cause personal injury, property damage and damage to animals. The
manufacturer will not be held responsible for such damage.
7. Keep all packing material (clips, plastic bags, polystyrene foam, etc.) out of children's reach as they are
hazardous.
8. This appliance is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the appliance.
9. It is strictly forbidden to touch the appliance barefoot or with wet hands or feet.
10. All repairs should be carried out by a competent person only, using only original spare parts. Failure to
comply with the above instructions could compromise safety and invalidate all liability on the part of the
manufacturer.
11. The appliance electrical connection should be made in accordance with the related provisions herein.
12. If the device that safeguards against excess pressure is supplied with the appliance, it must not be
tampered with and must be promptly replaced with appropriate devices if it is not in accordance with
regulations and legislation.
13. No inflammable items should be left in the vicinity of the appliance.
Key to symbols
Symbol Meaning
Failure to comply with this warning implies the risk of personal injury and even death
in some circumstances.
Failure to comply with this warning implies the risk of damage and even serious
damages to property, plants or animals in some circumstances.
It is obliged to keep to the general safety norms and appliance specifications.
General safety norms
Ref. Warning Risk Symbol
1
The heater must be fitted with reliable
grounding. Do not use the heater without any
reliable grounding. Do not connect the
grounding wire to the zero line or water pipe.
Electrocution
2

Ref. Warning Risk Symbol
3Do not use a 13 A socket which may cause your
wires to overheat, melt and fuse together, leading
to a short circuit. It should be wired directly to a
heater switch which is able to support higher
current.
A pressure relief device is to be fitted in the
installation at the cold water inlet. Risk of tank overpressure and explosion.
Electrocution from a damaged cable or
plug, or socket.
2Do not open or remove the appliance. Electrocution from live components;
personal injury from burns due to
overheated components or wounds
caused by sharp edges or protrusions.
4
Do not damage the power supply cable. Electrocution from live unsheathed wires.
5
Do not leave anything on top of the appliance. Personal injury from an object falling off the
appliance following vibrations
Damage to the appliance or any objects
underneath it due to the object falling off
following vibrations.
6
Do not climb onto the appliance. Personal injury due to the appliance falling.
Damage to the appliance or any objects
underneath it due to the appliance falling
off from its place of installation.
7
Do not attempt to clean the appliance without first
turning it off and unplugging it or switching the
dedicated switch off.
Electrocution from live components.
8
Install the appliance on a solid wall that is not
subjected to any vibrations. Appliance falling due to the wall giving way, or excessive noise during operation.
9
Make all electrical connections using conductors
with a suitable section. Fire due to overheating from electrical current passing through undersized cables.
10
11 Reset all the safety and control functions affected
by any intervention performed on the appliance
and make sure they operate correctly before
re-using the appliance.
Damage or shutdown of the appliance due
to out-of-control operation.
Safety
12 Before handling, empty all components that may
contain hot water. Personal injury from burns.
13 Descale the components, in accordance with the
instructions provided on the “safety data sheet" of
the product used, air the room, wear protective
clothing, avoid mixing different products, and
protect the appliance and surrounding objects.
Personal injury due to contact of the skin
or eyes with acidic substances, inhalation
or swallowing of harmful chemical agents.
Damage to the appliance or surrounding
objects due to corrosion caused by acidic
substances.
14 Do not use any insecticides, solvents or
aggressive detergents to clean the appliance. Damage to the plastic and painted parts.
Specific safety norms for this appliance
3

Appliance profile
Cube type C2 (Classic)
Model ABCD E
15L Cube C2 390 mm 360 mm 340 mm 100 mm 84 mm
30L Cube C2 470 mm 440 mm 395 mm 100 mm 103 mm
1 Upper panel
2 LED
3 Bottom panel
4 Temperature knob
5 Hot water outlet
6 Cold water inlet
7 ELCB electricity
protection*
8 Housing-rear
Model A B C D E
15L Cube D2 390 mm 360 mm 340 mm 100 mm 84 mm
30L Cube D2 470 mm 440 mm 395 mm 100 mm 103 mm
1 Upper panel
2 Bottom panel
3 Control panel
4 Hot water outlet
5 Cold water inlet
6 ELCB electricity
protection*
7 Housing-rear
Cube type D2 (Deluxe)
Appliance description
Cube type P2 (Premium)
1 Upper panel
2 LED
3 Bottom panel
4 Temperature knob
5 Hot water outlet
6 Cold water inlet
7 ELCB electricity
protection*
8 Housing-rear
Model A B C D E
15L Cube P2 390 mm 360 mm 340 mm 100 mm 84 mm
30L Cube P2 470 mm 440 mm 395 mm 100 mm 103 mm
4
*ELCB not available in some countries

1 Left panel
2 Magnesium anode
cover
3 Hot water outlet
4 Cold water inlet
5 Right panel
6 Temperature knob
7 LED
8 ELCB electricity protection*
9 Housing-rear
1 Left panel
2 Magnesium anode
cover
3 Hot water outlet
4 Cold water inlet
5 Right panel
6 Temperature knob
7 LED
8 ELCB electricity protection*
9 Housing-rear
Model A B C D E
Model A B C D E
Appliance description
Slim type C2 (Classic):
Slim type P2 (Premium):
5
*ELCB not available in some countries
20L Slim C2
15L Slim C2
30L Slim C2
630mm 280mm 280mm 100mm 140mm
550mm 260mm 260mm 100mm 130mm
680mm 320mm 320mm 100mm 160mm
20L Slim P2 630mm 280mm 100mm 140 mm
15L Slim P2 550mm 260mm
280mm
260mm 100mm 130mm
30L Slim P2 680mm 320mm 320mm 100mm 160mm
Slim type D2 (Deluxe):
1 Left panel
2 Magnesium anode
cover
3 Hot water outlet
4 Cold water inlet
5 Right panel
6 Temperature knob
7 Control Panel
8 ELCB electricity protection*
9 Housing-rear
Model A B C D E
30L Slim D2 680mm 320mm 320mm 100mm 160mm

Packing list
All water heaters are shipped with the following items. Please check them before installation.
No. Component description Qty.
1Water heater 1 set
2User’s manual1 copy
3Warranty card 1 copy (Vietnam)
4
Expansion tube 2 pcs
5
Screw 2 pcs
6
Pressure Relief Device
1 pc
7 Brackets
Installation norms (for the installer)
Follow the general warnings and the safety norms listed at the beginning of the text and keep to
all the instructions given under all circumstances.
The installation and set-up of the water heater must be carried out by a competent person in conformity with the applicable
norms in force and with any provisions set forth by local authorities and public health bodies.
The heater must be fitted with reliable grounding. Do not use the heater without any reliable grounding. Do not connect the
grounding wire to the zero line or water pipe.
The appliance heats water to a temperature below boiling point. It must be linked up to a mains water supply according to the
appliance performance levels and capacity.
Before connecting the appliance, it is first necessary to:
■Check whether the appliance characteristics (please refer to the data plate) meet the customer’s requirements.
■Make sure the installation conforms to the IP degree (of protection against the penetration of liquids) of the appliance according
to the applicable norms in force.
■Read the instructions provided on the packaging label and on the appliance data plate.
■Make sure the water tank is filled with water before turning on the appliance, manufacturer shall not be held responsible for any
damage and warranty shall be void if failure to do so.
This appliance is designed to be installed only inside buildings in compliance with the applicable norms in force.
Furthermore, installers are requested to keep to the following advice in the presence of:
■Damp: do not install the appliance in closed (unventilated) and damp rooms.
■Sunlight: do not expose the appliance to direct sun rays, even in the presence of windows.
■Dust/vapor/gas: do not install the appliance in the presence of particularly dangerous substances such as acidic vapor, dust or
those saturated with gas.
■Electrical discharges: do not install the appliance directly on electrical supplies that aren’t protected against sudden voltage
jumps.
In the case of walls made of bricks or perforated blocks, partition walls featuring limited static, or masonry different in some way
from those stated, you first need to carry out a preliminary static check of the supporting system.
The wall-mounting fastening hooks must be designed to support a weight that is three times higher than the weight of the water
heater filled with water.
Local norms could set forth restrictions regarding the installation in a bathroom environment. Therefore keep to the minimum
distances foreseen by the applicable norms in force.
Appliance norms
Implementation norms
IEC60335-1 Safety of household and similar electrical appliances---General requirements
IEC60335-2-21 Household and similar electrical appliances---Safety---Particular requirements for storage water heaters
Appliance installation
6
The appliance should be installed not too far from the point of use to limit heat dispersion along the piping.
Allow for a clearance of at least 50 cm to provide access to the electrical components, thus facilitating the maintenance
activities.
Cube/Slim20L: 1 pcs

Follow the general warnings and the safety norms listed at the beginning of the text and keep to
all the instructions given under all circumstances.
The installation and set-up of the water heater must be carried out by a competent person in conformity with the applicable
norms in force and with any provisions set forth by local authorities and public health bodies.
The heater must be fitted with reliable grounding. Do not use the heater without any reliable grounding. Do not connect the
grounding wire to the zero line or water pipe.
The appliance heats water to a temperature below boiling point. It must be linked up to a mains water supply according to the
appliance performance levels and capacity.
Before connecting the appliance, it is first necessary to:
■Check whether the appliance characteristics (please refer to the data plate) meet the customer’s requirements.
■Make sure the installation conforms to the IP degree (of protection against the penetration of liquids) of the appliance according
to the applicable norms in force.
■Read the instructions provided on the packaging label and on the appliance data plate.
■Make sure the water tank is filled with water before turning on the appliance, manufacturer shall not be held responsible for any
damage and warranty shall be void if failure to do so.
This appliance is designed to be installed only inside buildings in compliance with the applicable norms in force.
Furthermore, installers are requested to keep to the following advice in the presence of:
■Damp: do not install the appliance in closed (unventilated) and damp rooms.
■Sunlight: do not expose the appliance to direct sun rays, even in the presence of windows.
■Dust/vapor/gas: do not install the appliance in the presence of particularly dangerous substances such as acidic vapor, dust or
those saturated with gas.
■Electrical discharges: do not install the appliance directly on electrical supplies that aren’t protected against sudden voltage
jumps.
In the case of walls made of bricks or perforated blocks, partition walls featuring limited static, or masonry different in some way
from those stated, you first need to carry out a preliminary static check of the supporting system.
The wall-mounting fastening hooks must be designed to support a weight that is three times higher than the weight of the water
heater filled with water.
Local norms could set forth restrictions regarding the installation in a bathroom environment. Therefore keep to the minimum
distances foreseen by the applicable norms in force.
Installation steps
Cube type
1. Installing the expansion-bolt hooks
Drill two ø10 x 85 mm holes in the wall. Insert
expansion tubes into the holes, place the screws
through the hanging plate, and tighten the
screws with a screwdriver. Ensure hanging plate
is positioned vertically upward.
2. Remove baffles plate from hanging holes
Pry up the plastic baffle plates on the back of the
water heater that are covering the hanging holes
with a slotted screwdriver. Keep hanging holes
visible.
3. Hanging water heater
Lift the water heater, align its hanging holes with the hanging plate hooks. Fit the hanging holes onto hanging
plate hooks. Pull down the water heater to ensure secure installation.
Clearance space should be provided around the water heater as shown in the figure, to facilitate installation
and maintenance operation.
Appliance installation
7
The appliance should be installed not too far from the point of use to limit heat dispersion along the piping.
Allow for a clearance of at least 50 cm to provide access to the electrical components, thus facilitating the maintenance
activities.
≥ 80mm
≥ 80mm
≥ 160mm
≥ 80mm

Lift the water heater, align the square holes on the back with the hooks and attach them. Then pull down
the water heater to ensure the secure installation.
2. Hanging the water heater
Slim type
1. Installing expansion-bolts hook
Drill two ø10 x 85 mm holes in the wall. Insert expansion tubes into the holes, place the screws through the
hanging plate, and tighten the screws with a screwdriver. Ensure hanging plate is positioned vertically upward.
Clearance space should be provided around the water heater as shown in the figure, to facilitate
installation and maintenance operation.
Connect the water heater’s inlet and outlet with pipes or fittings that are able to withstand temperature in
excess of 80°C at a pressure above the working pressure. Therefore, we advise against the use of any
materials which cannot resist such high temperatures.
Connect the hydraulic line as shown in the figure. The outlet is on the left (red) and the inlet is on the
right (blue). Do not over-tighten the safety valve or alter the position of the safety valve without
authorization. It is essential to leave the safety release valve open to the atmosphere.
A cold pipe is connected under the valve and a hot pipe is connected with the valve outlet. (Wrap all
hydraulic connections with PTFE tape.) Fill the appliance with water and check if the appliance or the
hydraulic line leaks. If no leakage is detected, switch on the electricity mains and start the trial run.
If the network pressure is closed to the rated valve pressure, it will be necessary to apply a pressure
reducer far away from the appliance.
To avoid any possible damage to the mixer units (taps or shower), it is necessary to drain any impurities
from the pipes. Otherwise, impurities may cause damages to the mixer units.
Appliance installation
8
20L SLIM 15/30L SLIM
≥ 80mm
≥ 80mm ≥ 500mm
≥ 160mm

Electrical connection
Before performing any operations, disconnect the appliance from the electricity mains using the external switch.
For greater safety, authorize qualified personnel to carry out a careful inspection of the electrical system,
ensuring it complies with the applicable norms in force, because the appliance manufacturer will not be held
responsible for any damage caused by the lack of earthing of the system or for improper wiring.
Check that the supply system is suitable for the maximum power absorbed by the water heater (please refer to
the data plate) and that the cross-section of the electrical connection cables is suitable and complies with current
laws.
The use of multi-plugs, extensions or adaptors is strictly prohibited.
It is strictly forbidden to use the piping from the plumbing, heating and gas systems for the appliance earthing
connection.
Starting and testing the appliance
Before powering the appliance, fill the tank up with water.
The filling is carried out by turning on the domestic mains tap and the hot water tap, until the air is completely
released.
Visually check for water leaks, including flanges, and slightly tighten it if necessary.
Turn the knob to adjust the setting temperature (MAX position recommended). The red color heating LED keeps
on during the water heating process. After the preset working temperature is reached, the thermostat will stop
the heating element automatically.
Connect the water heater’s inlet and outlet with pipes or fittings that are able to withstand temperature in
excess of 80°C at a pressure above the working pressure. Therefore, we advise against the use of any
materials which cannot resist such high temperatures.
Connect the hydraulic line as shown in the figure. The outlet is on the left (red) and the inlet is on the
right (blue). Do not over-tighten the safety valve or alter the position of the safety valve without
authorization. It is essential to leave the safety release valve open to the atmosphere.
A cold pipe is connected under the valve and a hot pipe is connected with the valve outlet. (Wrap all
hydraulic connections with PTFE tape.) Fill the appliance with water and check if the appliance or the
hydraulic line leaks. If no leakage is detected, switch on the electricity mains and start the trial run.
If the network pressure is closed to the rated valve pressure, it will be necessary to apply a pressure
reducer far away from the appliance.
To avoid any possible damage to the mixer units (taps or shower), it is necessary to drain any impurities
from the pipes. Otherwise, impurities may cause damages to the mixer units.
Appliance installation
9
Hydraulic connection

Turning on or off the appliance
Turn on the power by plugging in the power cable. The red color power LED will bright as long as the
appliance is powered.
Adjusting the temperature
To adjust the temperature, rotate the knob on the front of the cover. There are four levels, i.e. Min, Mid, Eco
and Max, for your selection from low temperature to high temperature. (Deluxe D1 model is operated by
digital setting)
Min ≈ 30°C; Mid ≈ 40°C; Eco ≈ 55°C; Max ≈ 75°C.
Rotate the knob clockwise to increase the temperature.
Rotate the knob counter clockwise to decrease the temperature.
Rotate the knob to Eco level as shown in the figure to have optimal performance with limited electrical
consumption.
Control and operating instructions (C2 and P2 types)
Warning! Follow the general warnings and the safety norms listed at the beginning of the text and
keep to all the instructions given under all circumstances.
Advice for user
■ Do not power the appliance until the tank is filled with water. Otherwise, the appliance may be damaged.
■ To prevent burns, adjust the water temperature appropriately before use. Water above 50°C is dangerous for
humans.
■ When running the appliance, check the safety relief valve regularly in the following way: Move the handle of the
safety relief valve and check if any water flows out. If no water flows out, it indicates that the valve works
abnormally. In such case, please contact your local Technical Service Center.
■ To avoid dangers, the damaged power cord must be replaced by the power cord manufacturer or its service or
any other responsible department.
■ Immediately stop the appliance if the external earthing system is abnormal. Turn off the power at heater switch
on the wall and contact our After-sales Service.
Cube slim type C2
■The LED on the panel turns red during the heating process.
■The LED on the panel will be off when the setting temperature
has been reached.
■The LED on the panel turns red during the heating process.
■The LED on the panel turns blue when the setting temperature
has been reached.
■The LED on the panel will be off when the appliance is
disconnected from power.
Cube slim type P2
User instructions
10

Control and operating instructions (D2 types)
Turning on or off the appliance
Turn on the power at heater switch on the wall. The power LED near the
power plug keeps bright as long as the appliance is powered.
To start the appliance, switch on the power supply and press .
To stop and reset a working appliance, press and hold for 3 seconds.
Level I
1000 W 1500 W
Level II Level III
2500 W
Setting the temperature
The initial temperature (default) of the appliance is 72°C. The setting range is
between 35°C and 80°C.
After switching on the appliance:
Press ▲ or ▼ to start setting a desired temperature. The digit will blink. The
setting value increases or decreases by 1℃ after one press on ▲ or ▼ or
changes continuously 1°C by 1°C after holding ▲ or ▼ for 1.5 seconds. After
the temperature setting completes, the selected value will blink eight times
(for about 5 seconds) and be saved. Exit from the temperature setting
process is automatic.
After switching on the appliance:
Change the power by pressing ▲ and ▼ at the same time. There are three power levels, i.e. Ⅰ, Ⅱ and Ⅲ for your
selection. The default level is Ⅲ (highest power).
Changing the power
Power Level Specification
Calibrating the standard time
1. Hour Value Setting
■When switching on the appliance, press SET once
and hour value blinks.
■Hour value is displayed in the range from 00 to 23.
Press ▲ or ▼ to increase or decrease by 1.
■Press SET once (to confirm and proceed to Minute
Value Setting), or wait until hour value blinks for 5
seconds to acknowledge hour setting.
■From Hour Value Setting, press SET once and
minute value blinks.
■Minute value is displayed in the range from 00 to
59. Press ▲ or ▼ to increase or decrease by 1.
■Press SET once (to confirm and exit calibration), or
wait until minute value blinks for 5 seconds to
acknowledge minute setting.
User instructions
2. Minute Value Setting
11

3. Exit Calibration
■
From Minute Value Setting, press SET
once to exit calibration.
Timing mode
The appliance provides the following default times:
■Time 1: 18:00-22:00, one calendar day.
■Time 2: 5:00-9:00, one calendar day
■The setting temperature is 72°C.
Press SET to activate/deactivate timer setting feature:
Activate Time 1 → Activate Time 2 → Activate Time 1 & Time 2 → Deactivate Timer
Setting of Time 1 & 2:
To change timer setting, press power to switch off the heater to standby mode, and follow the steps
below. Once done, press power to switch on the heater.
1. Start Time Setting
■Go to Time 1, press SET and hold for 3 seconds. Hour value of START time blinks. Set the Hour Value and
Minute Value with the same procedure in setting Standard Time.
■Press SET once (to confirm and proceed to END time setting), or wait until minute value blinks for 5
seconds to acknowledge START time setting.
2. END Time Setting
■From START Time Setting, press SET once and Hour value of END time blinks. Set the Hour Value and
Minute Value with the same procedure in setting Standard Time.
■Press SET once (to confirm and exit calibration), or wait until minute value blinks for 5 seconds to
acknowledge END time setting.
User instructions
12

Repeat same step for setting of Time 2.
■From END Time Setting, press SET
once to exit calibration for Time 1.
3. Exit Calibration
Wiring diagram and technical parameters
Wiring diagram
C type
P type
D type
User instructions
**
*
*ELCB not available in some countries
13

Wiring diagram and technical parameters
Technical parameters
Product Range (SLIM) /
Technical Parameters
Type
C2 S15
(CLASSIC 15L)
P2 S15
(PREMIUM
P2 S20
(PREMIUM
C2 S30
(CLASSIC
P2 S30
(PREMIUM
D2 S30
(DELUXE
Model 2,5KW-VN 2,5KW-VN
2,5KW-VN 2,5KW-EX
1,5KW-SG
2,5KW-VN 2,5KW-EX
2,5KW-VN 2,5KW-VN 2,5KW-VN
Capacity 15L 15L 20L 20L 20L 30L 30L 30L
Power 2,5kW 2,5kW 2,5kW 1,5kW 2,5kW 2,5kW 2,5kW 2,5kW
Voltage 220V 220V 220V 230V 220V 220V 220V 220V
0.8MPa 0.8MPa 0.8MPa 0.8MPa 0.8MPa 0.8MPa 0.8MPa 0.8MPa
Max Operating Temperature
75°C 75°C 75°C 75°C 75°C 75°C 75°C 80°C
Net Weight 8Kg 8Kg 10,5Kg 10,5Kg 10,5Kg 17Kg 17Kg 17Kg
Weight Full of Water 23Kg 23Kg 30Kg 30Kg 30Kg 37Kg 37Kg 37Kg
Water Proof Casing IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4
Overall Dimensions
263x260x550
(mm)
263x260x550
(mm)
280x280x630
(mm)
280x280x630
(mm)
280x280x630
(mm)
320x320x680
(mm)
320x320x680
(mm)
TBC320x320
x680 (mm)
VITOWELL COMFORT SLIM - ELECTRIC STORAGE WATER HEATERS
C2 S20
(CLASSIC 20L)
14
Product Range (CUBE) / Technical Parameters Type D2 R15
(DELUXE
Model 2,5KW-VN
2,5KW-EX
1,5KW-SG 2,5KW-VN
2,5KW-EX
1,5KW-SG 2,5KW-
SG
2,5KW- VN
1,5KW- SG
2,5KW- VN
1,5KW- SG
2,5KW- VN
2,5KW- SG
Capacity 15L 15L 15L 15L 15L 30L 30L 30L 30L 30L 30L
Power 2,5kW 1,5kW 2,5kW 1,5kW 2,5kW 2,5kW 1,5kW 2,5kW 1,5kW 2,5kW 2,5KW
Voltage 220V 230V 220V 230V 230V 220V 230V 220V 230V 220V 230V
Max Working Pressure (Max Inlet Water Pressure) 0.8MPa 0,8MPa 0.8MPa 0,8MPa 0,8MPa 0.8MPa 0,8MPa 0.8MPa 0,8MPa 0.8MPa 0,8MPa
Max Operating Temperature 75°C 75°C 75°C 75°C 80°C 75°C 75°C 75°C 75°C 80°C 80°C
Net Weight 10Kg 10Kg 10Kg 10Kg 10Kg 15Kg 15Kg 15Kg 15Kg 15Kg 15Kg
Weight Full of Water 25Kg 25Kg 25Kg 25Kg 25Kg 44Kg 44Kg 44Kg 44Kg 44Kg 44Kg
Water Proof Casing IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4
Overall Dimensions 390x340x
360 (mm) 390x340x
360 (mm) 390x340x
360 (mm) 390x340x
360 (mm) 390x340x
360 (mm) 470x395x
440 (mm) 470x395x
440 (mm) 470x395x
440 (mm) 470x395x
440 (mm) 470x395x
440 (mm) 470x395x
440(mm)
VITOWELL COMFORT CUBE - ELECTRIC STORAGE WATER HEATERS
C2 R15
(CLASSIC 15L)
P2 R15
(PREMIUM 15L)
C2 R30
(CLASSIC 30L)
P2 R30
(PREMIUM 30L)
D2 R30
(DELUXE 30L)
Max Working Pressure (Max Inlet Water Pressure)

Maintenance regulations (for professional installers)
Warning! Follow the general warnings and the safety norms listed at the beginning
of the text and keep to all the instructions given under all circumstances.
All maintenance operations and service visits should be performed by a professional installer (who has the
skills required by the applicable norms in force).
Disconnect the appliance from the electricity supply before carrying out any work on it.
Cleaning the outer parts
■Prevent the water from flowing into the water heater during the cleaning process.
■Use a soft cloth soaked in warm water or mild detergent (detergents containing acids, chemical solvents or
abrasive agents are forbidden).
Safety valve
If the safety valve is equipped with valve lever, lift the valve lever, under any of following conditions:
■Empty the appliance if necessary;
■Check if the valve works normally regularly (typically every month);
■Before removing the valve, it is important to check that the water heater has been switched off long enough
for the water inside to cool down. Flush the valve with water to remove any deposit of salts. The valve can be
removed and reattached by use of a wrench.
Periodical maintenance (for professional installers)
■ To ensure the best performance from this appliance, descale the heating element once every two years.
■If you prefer not to use special descaling acids for this operation, simply crumble away the lime deposit
without damaging the heating element.
■Replace the magnesium anode every two years. (The replacement cycle may vary depending on the water
quality).
■According to the local water quality and user behaviors, descale the tank regularly (typically every month).
Cleaning of heating tube and replacement of magnesium anode vary with the water quality. Normally, the
frequency increases with the water hardness. It must be operated by professionals.
Do not attempt to service this appliance on your own. Please contact your competent service technicians.
Before calling your Technical Servicing Centre, check that the fault is not due to lack of water or power
failure.
In case of abnormal water heating, a thermic safety switch, according to the CEI-EN regulations, breaks the
circuit in both feeding phases to the heating element. In this case it is better to call the Technical Assistance.
The buzzer will send an alarm when there is any fault. The alarm will reset after the fault is cleared (D1 type).
This water heater is manufactured to suit the water conditions of
most public reticulated water supplies. The content of dissolved
solids (TDS) in water ranged from 100 mg/L to 600 mg/L. However,
there are some known water chemistries which can have
detrimental effects on the water heater and its operation and / or
life expectancy. If you are unsure of your water chemistry, you
may be able to obtain information from your local water supply
authority.
If the TDS content in water is more than 600 mg/L or softening
water is used, the consumption of magnesium anode may be
faster. Please shorten the inspection interval period of magnesium
anode and replace the consumed magnesium anode in time.
Maintenance instructions
Troubleshooting
15

Fault analysis
Fault
Water
leakage
No hot water or
low water
temperature
Water
overheating
Connections between components
are sealed poorly. Tighten seals.
The appliance is not powered.
The preset temperature is too low.
The heating tube fails. Switch off the electricity mains and contact our
Technical Servicing Center.
The thermostat fails. Switch off the electricity mains and contact our
Technical Servicing Center.
Switch off the electricity mains and contact our
Technical Servicing Center.
The current leakage
protector fails. Switch off the electricity mains and contact our Technical Servicing Center.
Reset the temperature.
The tank leaks.
Switch on the electricity mains.
Switch off the electricity mains and contact our
Technical Servicing Center.
Possible cause
Remedy
LED off Appliance is not powered.
The internal wiring is incorrect. Switch off the electricity mains and contact our
Technical Servicing Center.
The LED fails. Switch off the electricity mains and contact our
Technical Servicing Center.
Leakage of
one-way
safety relief
valve
There are a few water drips when the
preset temperature is reached. Normal relief.
The water pressure at the water inlet is
too high. Mount a pressure reducer at the water inlet.
The one-way safety relief valve fails. Replace the one-way safety relief valve.
Fault error E1
(D1 type)
Sensor being short circuited or
broken. Switch off the electricity mains and contact our Technical Servicing Center.
Fault error E2 (D1
type)
Protection against heating without
water. Switch off the electricity mains and contact our Technical Servicing Center.
Fault error E3 (D1
type)
Ultra-high temperature protection. Turn off the controller in 5 seconds and resume
automatically after the appliance is powered again.
Fault error E5 (D1
type)
Low-voltage protection. Resume automatically when the voltage turns
normal.
Troubleshooting
16

Sổ tay hướng dẫn vận hành và lắp đặt
MÁY NƯỚC NÓNG GIÁN TIẾP
An toàn --------------------------------------------------------------------18
Cảnh báo chung -----------------------------------------------------------------------------------18
Ý nghĩa của các biểu tượng--------------------------------------------------------------------------18
Các tiêu chuẩn an toàn chung-----------------------------------------------------------------------18
Các tiêu chuẩn an toàn riêng cho thiết bị-----------------------------------------------------------19
Mô tả thiết bị ---------------------------------------------------------------20
Lược tả thiết bị -------------------------------------------------------------------------------------20
Các tiêu chuẩn thiết bị -----------------------------------------------------------------------------22
Lắp đặt thiết bị -------------------------------------------------------------22
Danh sách đóng gói -------------------------------------------------------------------------------22
Các tiêu chuẩn lắp đặt (dành cho người lắp) --------------------------------------------------------22
Lắp đặt thiết bị--------------------------------------------------------------------------------------22
Các bước lắp đặt ----------------------------------------------------------------------------------23
Hướng dẫn sử dụng --------------------------------------------------------26
Sơ đồ nối dây và các thông số kỹ thuật ------------------------------------29
Lời khuyên cho người sử dụng ---------------------------------------------------------------------26
Hướng dẫn vận hành và điều khiển----- -------------------------------------------------------------26
Sơ đồ nối dây ---------------------------------------------------------------------------------------29
Các thông số kỹ thuật------------------------------------------------------------------------------30
Hướng dẫn bảo trì ----------------------------------------------------------31
Quy định bảo trì -------------------------------------------------------------------------------------31
Vệ sinh các bộ phận bên ngoài --------------------------------------------------------------------31
Các van an toàn ------------------------------------------------------------------------------------31
Bảo trì định kì ---------------------------------------------------------------------------------------31
Xử lý sự cố -----------------------------------------------------------------32
Phân tích lỗi ---------------------------------------------------------------------------------------32
Mục lục
17
TIẾNG VIỆT

An toàn
CẢNH BÁO CHUNG
1. Sổ tay này là một phần không thể tách rời và cần thiết của thiết bị. Cần bảo quản sổ tay cẩn thận và phải đi
kèm với thiết bị nếu thiết bị được chuyển cho chủ sử hữu hoặc người sử dụng khác và/ hoặc di chuyển đến địa
điểm khác.
2. Đọc kỹ các hướng dẫn và cảnh báo trong sổ tay hướng dẫn này. Đây là những thông tin quan trọng về việc
lắp đặt, sử dụng và bảo trì thiết bị mới một cách an toàn.
3. Việc lắp đặt phải do người có chuyên môn thực hiện theo hướng dẫn trong sổ tay này.
4. Nghiêm cấm sử dụng thiết bị này ngoài mục đích cụ thể được nêu trên. Nhà sản xuất sẽ không chịu trách
nhiệm cho bất kỳ hỏng hóc nào do sử dụng sai mục đích, sai cách, bất hợp lý hoặc do không tuân thủ các
hướng dẫn trong sổ tay này.
5. Việc lắp đặt, bảo trì và các hành động can thiệp khác phải do người có chuyên môn thực hiện và tuân thủ
các quy định pháp lý hiện hành cũng như chỉ dẫn của nhà sản xuất.
6. Lắp đặt sai cách có thể gây thiệt hại về người, tài sản và động vật. Nhà sản xuất sẽ không chịu trách nhiệm
cho các tổn hại trên.
7. Để vật liệu đóng gói (kẹp, túi nhựa, xốp polystyrene,...) tránh xa tầm tay của trẻ em vì các vật này rất nguy
hiểm.
8. Thiết bị này không được thiết kế dành cho những người (bao gồm cả trẻ em) bị suy giảm khả năng thể chất,
giác quan hoặc thần kinh, hoặc thiếu kinh nghiệm và kiến thức, trừ khi có sự giám sát hoặc hướng dẫn sử dụng
thiết bị từ những người chịu trách nhiệm về sự an toàn của họ. Cần giám sát trẻ để đảm bảo trẻ không đùa
nghịch với thiết bị.
9. Nghiêm cấm động vào thiết bị khi để chân trần hoặc bằng chân tay ướt.
10. Toàn bộ việc sửa chữa chỉ thực hiện bởi người có chuyên môn, chỉ sử dụng các phụ tùng thay thế chính
hãng. Việc không tuân thủ các hướng dẫn trên có thể ảnh hưởng đến sự an toàn và mọi trách nhiệm pháp lý
của nhà sản xuất sẽ mất hiệu lực.
11. Việc nối điện thiết bị cần được thực hiện theo các quy định được trong sổ tay này.
12. Nếu bộ phận bảo vệ chống quá áp đi kèm với thiết bị thì không được can thiệp và phải nhanh chóng thay
thế bằng thiết bị thích hợp nếu bộ phận đó không tuân thủ quy định và pháp luật.
13. Không để các vật dễ cháy gần thiết bị.
Ý nghĩa của các biểu tượng
Biểu tượng
Ý nghĩa
Việc không tuân thủ cảnh báo này sẽ dẫn đến nguy cơ gây thương tích và thậm chí
tử vong trong một vài trường hợp.
Việc không tuân thủ cảnh báo này sẽ dẫn đến nguy cơ gây thiệt hại và thậm chí
thiệt hại nghiêm trọng đến tài sản, cây trồng và vật nuôi trong một vài trường hợp.
Bắt buộc tuân thủ các tiêu chuẩn an toàn chung và các thông số kỹ thuật của thiết bị.
Các tiêu chuẩn an toàn chung
STT Cảnh báo Rủi ro Biểu
tượng
1 Máy nước nóng phải được nối đất an toàn. Không
sử dụng máy nước nóng khi không có bất cứ
đường nối đất an toàn nào. Không nối dây dẫn nối
đất với đường dây trung tính hoặc ống nước.
Điện giật
18

STT Cảnh báo Rủi ro Biểu
tượng
3
Không sử dụng ổ cắm 13 A vì sẽ làm các dây điện bị
quá nhiệt, nóng chảy và cháy cùng lúc, dẫn đến
chập mạch. Cần nối dây trực tiếp đến công tắc máy
nước nóng để có khả năng hỗ trợ dòng điện cao hơn.
Điện giật do dây điện hoặc phích cắm, hoặc
ổ cắm bị hỏng.
2Không mở hoặc tháo gỡ thiết bị. Điện giật do các linh kiện vẫn còn điện;
gây bỏng da do các linh kiện nóng quá
mức hoặc bị thương do các phần sắc
nhọn nhô ra.
5Không làm hỏng cáp nguồn. Điện giật do dây điện có điện hở.
6Không đặt bất kỳ vật gì lên trên thiết bị. Gây thương tích do các vật rơi khỏi thiết bị
sau rung động
Gây hư hỏng thiết bị hoặc các đồ vật ở dưới
do có vật rơi xuống sau rụng động.
7Không được trèo lên thiết bị. Gây thương tích do thiết bị rơi xuống.
Gây hư hỏng thiết bị hoặc các đồ vật ở dưới
do thiết bị rơi xuống từ nơi lắp đặt.
8Không cố vệ sinh thiết bị mà không tắt và rút phích
cắm trước hoặc tắt công tắc chuyên dụng. Điện giật do các linh kiện vẫn còn điện.
9Lắp đặt thiết bị trên mặt tường chắc chắn không
chịu ảnh hưởng từ rung động nào. Thiết bị rơi xuống do mặt tường dịch chuyển, hoặc tiếng ồn quá mạnh trong quá
trình hoạt động.
10 Thực hiện tất cả các kết nối điện bằng dây dẫn có
tiết diện phù hợp. Cháy do quá nhiệt khi dòng điện đi qua các dây dẫn có tiết diện nhỏ.
11 Cài đặt lại chức năng điều khiển và an toàn bị ảnh
hưởng do có sự can thiệp đến thiết bị và đảm bảo
các chức năng vận hành đúng cách trước khi sử
dụng lại thiết bị.
Gây hư hỏng hoặc tắt nguồn thiết bị do sử
dụng quá mức.
An toàn
12 Trước khi di chuyển, tháo cạn tất cả các linh kiện có
thể chứa nước nóng. Gây thương tích do bỏng.
13 Khử cặn các linh kiện theo hướng dẫn được ghi trên
“bảng dữ liệu an toàn” của sản phẩm được sử
dụng, làm thoáng phòng, mặc đồ bảo hộ, tránh để
lẫn các sản phẩm khác nhau và bảo vệ thiết bị
cũng như các đồ vật xung quanh.
Gây thương tích do da hoặc mắt tiếp xúc
với các chất axit, hít vào hoặc nuốt phải
các chất hóa học có hại.
Gây hư hỏng thiết bị hoặc đồ vật xung
quanh do bị ăn mòn bởi các chất có tính
axit.
14 Không sử dụng các chất diệt côn trùng, dung
môi hoặc chất tẩy rửa mạnh để lau chùi thiết bị. Gây hư hỏng các phần được sơn và nhựa.
Các tiêu chuẩn an toàn riêng cho thiết bị
19
Phải lắp thiết bị giảm áp vào cụm thiết bị phía
đường nước lạnh vào. Nguy cơ quá áp và nổ bình chứa.4