Timberk WHE 3,5 XTRH1 User manual

 / Models


  
Instant
water heater
Instruction manual
            .
Outlook of devices, aslo colour scores can be revised without any special advance notices.
WHE3,5XTRH1
WHE4,5XTRH1
WHE5,5XTRH1
WHE12,0XTLC1
WHE18,0XTLC1
WHE21,0XTLC1
WHE24,0XTLC1
Heating Mode
WHE5,0XTNZ1
WHE6,0XTNZ1
WHE6,5XTNZ1
WHE7,0XTNZ1
WHE8,0XTNZ1

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THE IMPORTANT PRECAUTIONS AND INSTRUCTIONS CONTAINED IN
THIS INSTRUCTION MANUAL DO NOT INCLUDE ALL POSSIBLE MODES
AND SITUATIONS, WHICH MAY OCCUR. IT IS NECESSARY TO
UNDERSTAND THAT COMMON SENSE, CAUTIOUSNESS, AND
CAREFULNESS ARE FACTORS, WHICH CANNOT BE "INTEGRATED" TO
ANY PRODUCT. THESE FACTORS SHALL BE TAKEN INTO ACCOUNT BY
THE PERSON, WHO IS INTERESTED IN PROPER OPERATION OF THE
DEVICE. THE MANUFACTURER IS NOT RESPONSIBLE FOR DAMAGE OF
THE APPLIANCE OR ITS COMPONENTS DURING TRANSPORTATION, AS
A RESULT OF IMPROPER INSTALLATION, DUE TO VOLTAGE SURGES, AS
WELL AS IN THE EVENT OF UNAUTHORIZED CHANGES OR
MODIFICATIONS IN ANY PART OF THE APPLIANCE.
2. PRECAUTIONS
During operation of the water heater, it is necessary to observe some
precautions. Improper operation due to ignorance of the precautions
may result in personal injury of the user or other people, as well as dam-
age of their property.
1. Any electric appliance shall be under observation during its opera-
tion, especially if there are children close by. Carefully watch that
children do not touch the appliance.
2. Before installation and connection of the water heater to the electric
mains, check and make sure that there is a grounding loop in your
electric mains. If there is no grounding loop in your electric mains,
operation of the water heater is hazardous for life.
3. Connect the water heater only to 220VAC/50Hz mains. If necessary,
clarify specifications of your electric mains from the power suppliers.
4. Never use the water heater, if it is faulty.
5. Do not remove the front panel of the water heater during its opera-
tion.
6. Immediately disconnect the water heater from the electric mains in
case of strange sounds, odor, or smoke from it.
7. Always disconnect the water heater from the electric mains during
storms.
8. Before beginning of cleaning and maintenance of the water heater,
always disconnect it from the electric mains. Perform cleaning and
maintenance in accordance with the guidelines of this instruction
manual.
9. Do not use hazardous chemicals for cleaning of the water heater and
exclude their contact with it.
CONTENTS:
1. Important information
2. Precautions
3.Operational characteristics
4. Water heater design
5. Package contents
6. Installation of water heater
7. Water heater control
8. Maintenance
9. Troubleshooting
10. Electrical schematic diagram
11. Disposal
Dear customer!
We thank you for happy choice and purchase of a Timberk electric inline
water heater. It will serve you long. The inline water heater is designed for
instantaneous preheating of main water. The water heater can be installed
in places, where it is possible to connect it to the water pipeline and elec-
tric wiring (single-phase electric power supply is required), except for
rooms with possible temperature drops below 0°C.
The water heater is easy to install and efficient in use thanks to minimum
loss of electric power and effective consumption of hot water. The appli-
ance design consisting of a heat-resistant robust heating vessel, durable
copper heating elements, and safety control devices allows us to confirm
with certainty that the TIMBERK water heater convenient in operation will
serve you for many years.
1. IMPORTANT INFORMATION
Please carefully read this instruction manual before using the water heater.
This instruction manual contains important information concerning your
safety, as well as recommendations on proper use and care of the appli-
ance. Please keep the instruction manual together with the warranty card,
sales slip, and, if possible, with the cardboard box and packing materials.
This instruction manual describes different types of this device.
The water heater purchased by you may slightly differ from that described
in the instruction manual, but this does not affect the methods of its use
and operation.
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ENGLISH
. OPERATIONAL CHARACTERISTICS
WATERMASTER I Series. Water Heater Models: WHE 3.5 XTR H1, WHE 4.5
XTR H1, WHE 5.5 XTR H1
1. Instantaneous water heating without preprocessing and waiting.
2. Reliable nichrome spiral heating element with ceramic protection;
the special shape prevents significant accumulation of scale.
3. Automatic temperature protection (electronic temperature sensor)
protects water heater from overheating, and assures user protec-
tion against burns.
4. Hydraulic flow sensor automatically stops the heating mode when
cold water supply is suddenly interrupted or water pressure in the
system drops below the working level.
5. The water heater is designed for household application, for one
water consumption point and can be installed in any convenient
place.
6. Ultra-thin and space-saving design is ideal for installation and use
both in a city apartment, and a country-side house. And quicker
and safer heating combined with notable electric power saving,
which means less costs, will be pleasing you during the whole life-
time of TIMBERK water heater.
WATERMASTER II Series. Water Heater Models: WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1
1. Instantaneous water heating without preprocessing and waiting.
2. Reliable nichrome spiral heating element with ceramic protection;
the special shape prevents significant accumulation of scale.
3. Temperature protection (temperature switch) protects water heater
from overheating, and assures user protection against burns.
10. Do not use the water heater for purposes not specified in this in-
struction manual.
11. Do not use the water heater in explosive or corrosive environment.
Do not store gasoline and other volatile highly inflammable liquids
near the appliance. This is very hazardous!
12. It is prohibited to change the design of the water heater or modify it.
13. Any service works shall be performed by a specialized organization,
by qualified specialists. Improper installation may result in refusal of
warranty service.
14. The water heater is not designed for use by people (including chil-
dren) with physical, sensory, or mental disability, having insufficient
experience and knowledge, without observation and instructing on
use of the appliance by the person responsible for their safety. It is
necessary to watch children not to play with the appliance.
15. Do not use the water heater with the damaged electrical cable or
other damages. For troubleshooting and repairs, please contact the
nearest authorized service center of the manufacturer in your region.
16. Make sure that the electrical cable does not cross sharp edges and
does not contact with hot surfaces.
17. Never leave the energized water heater unattended.
18. Do not allow children to use the water heater without supervision by
adults.
19. Thoroughly observe the connection procedure of the water heater,
since improper connection will result in its failure and may inflict
harm to the user.
20. Do not swap locations of the water inlet and outlet positions, since
this will result in failure of the water heater and may inflict harm to
the user (see IN (inlet) and OUT (outlet) marks). The water heater
shall be connected only with its water connections downward in
strictly vertical position. Connection of the water heater in another
position will result in its failure. The water heater shall be operated
only with the original shower nozzle excluding its clogging.
21. The water heater is designed only for heating of water. Do not use
the product for heating of other liquids. This may inflict a severe dam-
age to the water heater.
22. Do not connect electric wires of the device to a water pipeline, a gas
pipeline, etc.
23. Make sure in proper connection of electric wiring (including connec-
tion to the grounding loop).
24. Inlet temperature of water shall not exceed +35°C.
25. For use of the water heater in a bathroom, it is recommended to
install it above body height so that water splashes do not get onto
its enclosure.
26. It is prohibited to splash water onto the heater or irrigate it.
27. It is prohibited to: pull electric wires inside the water heater.
ATTENTION!
The water heater shall be certainly grounded.

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4. Hydraulic flow sensor automatically stops the heating mode when
cold water supply is suddenly interrupted or water pressure in the sys-
tem drops below the working level, or water inlet is blocked.
5. The water heater is designed for several water consumption points
(in line) and can be installed in any convenient place.
6. Ultra-thin and space-saving design is ideal for installation and use
both in a city apartment, and a country-side house. And quicker and
safer heating combined with notable electric power saving, which
means less costs, will be pleasing you during the whole lifetime of
TIMBERK water heater.
WATERMASTER III Series. Water Heater Models: WHE 12.0 XTL C1, WHE 18.0
XTL C1, WHE 21.0 XTL 1, WHE 24.0 XTL C1.
1. Instantaneous water heating without preprocessing and waiting.
2. Reliable nichrome spiral heating element with ceramic protection;
the special shape prevents significant accumulation of scale.
3. Automatic temperature protection (electronic temperature sensor
and temperature switch) protects water heater from overheating, and
assures user protection against burns.
4. Hydraulic flow sensor automatically stops the heating mode when
cold water supply is suddenly interrupted or water pressure in the
system drops below the working level, or water inlet is blocked.
5. The water heater is designed for several water consumption points
(in line) and can be installed in any convenient place.
6. Ultra-precise smart automatic electronic control of water heating.
7. Setting of necessary and displaying of current water temperature at
LED display with 1° accuracy.
8. Automatic protection from excess water pressure.
9. Compact design is ideal for installation in restricted space. And
quicker and safer heating combined with notable electric power
saving, which means less costs, will be pleasing you during the whole
lifetime of TIMBERK water heater.

ENGLISH
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The design of WATERMASTER II Series water heater is given in Figure 3, 4.
Fig. 3
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4
1. Front panel
2. Indicating lamp
3. Inlet nozzle
4. Outlet nozzle
5. Temperature switch
6. Spiral heating element
7. Heating flask
8. Junction block
9. Hydraulic flow sensor
10. Inlet opening for electric
cable
11. Wall mounting bracket
The design of WATERMASTER III Series water heater is given in Figure 5, 6.
Fig. 5
1. Front panel
2. Control panel
3. Inlet nozzle
4. Outlet nozzle
5. Electronic flow sensor
6. Power board 1
7. Power board 2
8. Temperature switch and
pressure sensor
9. Spiral heating element
10. Heating flask
11. Junction block
12. Electronic temperature
sensor
13. Inlet opening for
electric cable
14. Transformer
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2
Fig. 4
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Fig. 6
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5. SCOPE OF SUPPLY
1. Water heater  1 pc.
2. Mounting fittings  1 pc.
3. Operational Manual  1 pc.
4. Warranty card  1 pc.
5. Packing  1 pc.
6. INSTALLATION OF WATER HEATER
Location
1. Water heater can be installed in any place provided that the indoor
temperature is not lower than 0°.
2. Water heater is installed at the flat wall surface in strict parallel to the
floor with outlet nozzles in downward direction; it shall be installed
at a place where water and splashes cannot get onto its housing.
3. When water heater location is being defined, free access to it shall be
assured, not less than 0.3 m from the top, bottom and sides. It will
provide for the maximum convenient servicing and regulation of
water heater if required.
4. Water heater shall be installed in such a way that a distance from the
bottom part of the device to the floor does not exceed 1.6 m.
Mounting of Water Heater
WATERMASTER I Series. Water Heater Models: WHE 3.5 XTR H1, WHE 4.5
XTR 1, WHE 5.5 XTR H1
As shown in Figure 7, identify the points for openings and drill 2
openings of the corresponding depth in the wall, insert dowels, screw
up the screws, and make sure that there is a certain distance between
the screw head and the wall, then hang the water heater on the screws
(see Fig.8) and check the reliability of fixing.
Fig. 7
Fig. 8
NOTE:
Water heater installation at the place of its operation and electric
power connections shall be performed by the specialized organiza-
tion, a representative of the manufacturer's maintenance service or
experts licensed for execution of electric equipment assembling with
safety regulations observed.
In the event of violation of water heater operation manual, water
heater is not subject to warranty servicing, and the manufacturer
cannot be held liable.

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WATERMASTER Ill Series. Water Heater Models: WHE 12.0 XTL 1, WHE
18.0 XTL 1, WHE 21.0 XTL 1, WHE 24.0 XTL C1.
As shown in Figure 11, identify the points for openings and drill 4
openings of the corresponding depth in the wall, insert dowels, attach
water heater to them having inserted the electric cable (see the figure),
screw up the screws, check the reliability of fixing. .
WATERMASTER // Series. Water Heater Models: WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1
As shown in Figure 9, identify the points for openings and drill 2
openings of the corresponding depth in the wall, insert dowels, screw
up the screws, and make sure that there is a certain distance between
the screw head and the wall, then hang the water heater on the screws
(see Fig.10) and check the reliability of fixing.
Fig. 9
106 mm

Fig. 10
Fig. 12 Fig. 13
Fig. 11
384 mm
214 mm
NOTE:
Water heater installation at the place of its operation and electric
power connections shall be performed by the specialized organiza-
tion, a representative of the manufacturer's maintenance service or
experts licensed for execution of electric equipment assembling with
safety regulations observed.
In the event of violation of water heater operation manual, water
heater is not subject to warranty servicing, and the manufacturer
cannot be held liable.
ENGLISH

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Connection to Water Main
WATERMASTER I Series. Water Heater Models: WHE 3.5 XTR H1, WHE 4.5
XTR H1, WHE 5.5 XTR H1
1. Water heater shall be directly connected to cold water supply line
with working pressure from 0.15 to 0.6 MPa. If water pressure in wa-
ter supply line exceeds 0.6 MPa, a pressure reducing valve shall be
included to the feeding system to assure that working pressure does
not exceed 0.6 MPa.
2. Water heater has inlet and outlet nozzles for connection to water
main, the nozzles are marked with indication labels; the diameter of
external thread is 10 mm (G3/8"). For connection to 12 mm (G1/2)
pipes special adapters* shall be used. (* - not included into the scope
of supply).
3. To avoid water leakages use rubber sealing gaskets when connecting
all nozzles.
4. A tap cutting off cold water supply shall be installed upstream its
inlet to water heater. It is prohibited to install the cut-off tap at hot
water outlet from water heater (Fig.14).
5. After water heater installation and before power supplying, the sys-
tem shall be flushed with water to remove any impurities or free
particles inside water heater. Otherwise, water heater operability
may be affected.
6. It is RECOMMENDED to use a separate water filter at cold water inlet
to increase the heating element lifetime if water hardness exceeds
450mg/l ().
7. Make sure that water heater is operable, let water flow pass through
it. Check the tightness of all connections and, if needed, tighten all
retaining nuts and screws.
NOTE:
Prior to water heater installation, flush water supply pipes with
flowing water.
Fig. 14
WATERMASTER II Series. Water Heater Models: WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1.
1. Water heater shall be directly connected to cold water supply line
with working pressure from 0.15 to 0.6 MPa. If water pressure in water
supply line exceeds 0.6 MPa, a pressure reducing valve shall be in
NOTE:
Water heater installation at the place of its operation and electric
power connections shall be performed by the specialized organiza-
tion, a representative of the manufacturer's maintenance service or
experts licensed for execution of electric equipment assembling with
safety regulations observed.
In the event of violation of water heater operation manual, water
heater is not subject to warranty servicing, and the manufacturer
cannot be held liable.
ATTENTION!
If water heater is used at specially complicated (obsolete) water
supply networks with high amount of suspended particulate
matter and impurities contained in water flowing through the
mains, purifying filters shall be used on a COMPULSORY basis.
Please, follow this recommendation, otherwise, the non-
execution of this provision may influence the lifetime of the
device and warranty servicing conditions (up to refusal to execute
warranty liabilities by the device manufacturer and its
maintenance services).
CORRECT ASSEMBLY INCORRECT ASSEMBLY
outlet tap
inlet inlet
outlet
tap

ENGLISH
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cluded to the feeding system to assure that working pressure does not
exceed 0.6 MPa.
2. Water heater has inlet and outlet nozzles for connection to water
main, the nozzles are marked with indication labels; the diameter of
external thread is 12 mm (G1/2").
3. To avoid water leakages use rubber sealing gaskets when connecting
all nozzles.
4. After water heater installation and before power supplying, the sys-
tem shall be flushed with water to remove any impurities or free
particles inside water heater. Otherwise, water heater operability
may be affected.
5. It is RECOMMENDED to use a separate water filter at cold water inlet
to increase the heating element lifetime if water hardness exceeds
450mg/l ()
6. Make sure that water heater is operable, let water flow pass through
it. Check the tightness of all connections and, if needed, tighten all
retaining nuts and screws.
NOTE:
Prior to water heater installation, flush water supply pipes with
flowing water.
ATTENTION!
If water heater is used at specially complicated (obsolete) water
supply networks with high amount of suspended particulate
matter and impurities contained in water flowing through the
mains, purifying filters shall be used on a COMPULSORY basis.
Please, follow this recommendation, otherwise, the non-
execution of this provision may influence the lifetime of the
device and warranty servicing conditions (up to refusal to execute
warranty liabilities by the device manufacturer and its
maintenance services).
WATERMASTER III Series. Water Heater Models: WHE 12.0 XTL 1, WHE 18.0
XTL C1, WHE 21.0 XTL C1, WHE 24.0 XTL 1.
1. Water heater shall be directly connected to cold water supply line
with working pressure from 0.1 to 0.6 MPa. If water pressure in water
supply line exceeds 0.6 MPa, a pressure reducing valve shall be
included to the feeding system to assure that working pressure
does not exceed 0.6 MPa.
2. Water heater has inlet and outlet nozzles for connection to water
main, the nozzles are marked with indication labels and are
equipped with coupling nuts, 12 mm (G1/2) external thread diam-
eter, and 2 adapters, 12 mm (G1/2) external thread diameter.
3. To avoid water leakages use rubber sealing gaskets when connect-
ing all nozzles.
4. After water heater installation and before power supplying, the
system shall be flushed with water to remove any impurities or free
particles inside water heater. Otherwise, water heater operability
may be affected.
5. It is RECOMMENDED to use a separate water filter at cold water
inlet to increase the heating element lifetime if water hardness
exceeds 450mg/l ().
6. Make sure that water heater is operable, let water flow pass through
it. Check the tightness of all connections and, if needed, tighten all
retaining nuts and screws.
NOTE:
Prior to water heater installation, flush water supply pipes with
flowing water.
ATTENTION!
If water heater is used at specially complicated (obsolete) water
supply networks with high amount of suspended particulate
matter and impurities contained in water flowing through the
mains, purifying filters shall be used on a COMPULSORY basis.
Please, follow this recommendation, otherwise, the non-
execution of this provision may influence the lifetime of the
device and warranty servicing conditions (up to refusal to execute
warranty liabilities by the device manufacturer and its
maintenance services).

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Connection to Electric Main
WATERMASTER I Series. Water Heater Models: WHE 3.5 XTR 1, WHE 4.5
XTR H1, WHE 5.5 XTR H1
1. The connection to the electric main is made with 1 m long electric
cable coming out from the device housing. If the cable length is in-
sufficient, it can be extended with the help of special sealed electric
contacts.
It is prohibited to use a plug and power receptacle when connecting
water heater to the main, except for model WHE 3.5 XTR H1.
2. Water heater shall be connected to AC electric main with 220 V volt-
age by a three-core electric copper cable with the minimum core
cross-section: for model WHE 3.5 XTR H1  3x1.5 mm2 and 16 A cir-
cuit breaker; for models WHE 4.5 XTR H1, WHE 5.5 XTR H1  3x2.5
mm2 and 25 A circuit breaker. In the event of wire cross-section in-
crease it should be noted that water heater and electric cable shall be
located on a thermally insulated or heated wall.
3. Water heater shall be stationary (constantly) connected to the power
supply (except for model WHE 3.5 XTR 1), 220 V AC, with compul-
sory connection to a ground electric loop. Make sure that ground
loop resistance is < 4Q.
ATTENTION!
It is prohibited to use a water heater without proper grounding.
WATERMASTER II Series. Water Heater Models WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1
1. Power cable inlet is made at the smooth side of the device. It is pro-
hibited to use a plug and power receptacle when connecting water
heater to the main.
2. Water heater shall be connected to AC electric main with 220 V volt-
age by a three-core electric copper cable with the minimum core
cross-section: for model WHE 5.0 XTN Z1  3x2,5 mm2 and 25 A cir-
cuit breaker; for models WHE 6.0 XTN Z1, WHE 6.5 XTN Z1, WHE 7.0
XTN Z1  3x4 mm2 and 32 A circuit breaker; for model WHE 8.0 XTN
Z1  3x6 mm2 and 40 A circuit breaker.
In the event of wire cross-section increase it should be noted that
water heater and electric cable shall be located on a thermally insu-
lated or heated wall.
4. For connection to power supply:
- Remove the front panel by unscrewing 2 screws at the device sides,
- Strip the power cord ends by not less than 7-10 mm,
- Pass the electric cable via electric cable inlet opening 10 (see Fig.4)
at the rear part of the device,
- Remove the clamping plate holding the electric cable, do not lose
the positioning screws, make sure that the cable is not touching
sharp edges and hot surfaces,
- Connect the electric cable wires with junction block 8 (see Fig.4)
according to its marking,
- Make sure that securing screws are tightened correctly. Untight
connection may result in heating of wires,
- Install the electric cable plate into the main position with the help of
positioning screws, make sure that the cable cannot be pulled out,
- Check the tightness of connection of all internal electric contacts,
including detachable contact block and bolted connection at heating
elements.
If there are any loose items, fix and tighten them,
- Install the front panel and tighten 2 screws at the device sides.
WATERMASTER III Series. Water Heater Models: WHE 12.0 XTL C1, WHE 18.0
XTL C1, WHE 21.0 XTL C1, WHE 24.0 XTL 1.
1. Electric cable inlet is made at the rear side of the device.
2. Water heater shall be connected to AC electric main with 380 V volt-
age by a four-core electric copper cable with the minimum core
cross-section: for model WHE 12.0 XTL C1  4x2.5 mm2 and 3x25 A
circuit breaker; for model WH 18.0 XTL C1  4x4 mm2 and 3x32 A
circuit breaker; for models WHE 21.0 XTL C1, WHE 24.0 XTL C1  46
mm2 and 40 A circuit breaker in the event of wire cross-section
increase it should be noted that water heater and electric cable shall
be located on a thermally insulated or heated wall.
ATTENTION!
It is prohibited to use a water heater without proper grounding.
3. Water heater shall be stationary (constantly) connected to the power
supply (except for model WHE 3.5 XTR 1), 220 V AC, with compul-
sory connection to a ground electric loop. Make sure that ground
loop resistance is < 4Q.

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ATTENTION!
Neutral conductor is not used in the electric circuit of this water
heater.
3. Water heater shall be stationary (constantly) connected to the power
supply (except for model WHE 3.5 XTR 1), 380 V AC, with
compulsory connection to a ground electric loop. Make sure that
ATTENTION!
It is prohibited to use a water heater without proper grounding.
4. For connection to power supply:
- Remove the front panel by unscrewing 2 screws at the top part of the
device and 1 screw at the bottom part,
- Strip the power cord ends by not less than 7-10 mm,
- Pass the electric cable via electric cable inlet opening 13 (see Fig.6) at
the rear panel of the device housing,
- Remove the clamping plate holding the electric cable, do not lose
the positioning screws, make sure that the cable is not touching
sharp edges and hot surfaces,
- Connect the electric cable wires with junction block 11 (see Fig.6)
according to its marking,
- Make sure that securing screws of the junction block are tightened
correctly. Untight connection may result in heating of wires,
- Install the electric cable plate into the main position with the help of
positioning screws, make sure that the cable cannot be pulled out,
- Check the tightness of connection of all internal electric contacts,
including detachable contact blocks and bolted contact connection
at heating elements. If there are any loose items, fix and tighten
them,
- Install the front panel and tighten 2 screws at the top part and 1
screw at the bottom part of the device.
7. WATER HEATER OPERATION
WATERMASTER I Series. Water Heater Models: WHE 3.5 XTR H1, WHE 4.5
XTR H1, WHE 5.5 XTR H1
1. During the first water heater start-up or after long-term non-use, fill
the device with water by opening the cut-off tap at cold water
supply line, and make sure that there is a steady cold water flow at
water outlet at the consumption point, after that switch on the
device power supply.
2. Incoming water is heated up inside the heating flask when it is
flowing through the heating element. Water temperature in the
water supply main may vary depending on a season from +3° to
+20°, so, in winter water flow shall be less than in summer to
assure the optimum water temperature.
3. Water flow is controlled by the tap at water inlet to water heater. It
is prohibited to install the cut-off tap and/or shut off water supply
at the outlet from water heater.
4. When there is water flow, and water pressure is not less than 0.15
MPa, heating is switched on automatically, and indicating lamp 2
located at the front panel lights up (see Fig.1).
5. After heating is switched on, you need to wait for 10-20 seconds to
let temperature of heated water stabilize.
6. The tap at the inlet nozzle (cold water inlet) can be used to regulate
hot water temperature. By reducing water flow you increase water
temperature at the outlet and, correspondingly, vice versa.
7. To switch off the water heater, simply close water flow at the inlet to
the device; pressure sensor automatically opens the circuit of
power supply to heating element, and indicating lamp 2 located at
the front panel goes down (see Fig.1). For the subsequent switching
on of heating it is enough to reopen the tap supplying water to
water heater.
ATTENTION!
Water heater of WHE 3.5 XTR H1 Series, 3.5 kW, is designed for using
during summer period with water temperature at inlet to water
heater not less than +16 -+18°
ATTENTION!
Do not switch on the water heater if there are grounds to suspect
that water inside it has frozen.
ENGLISH

14 www.timberk.com  instant water heater
WATERMASTER II Series. Water Heater Models: WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1
1. During the first water heater start-up or after long-term non-use, fill
the device with water by opening the cut-off tap at cold water supply
line, and make sure that there is a steady cold water flow at water
outlet at the consumption point, after that switch on the device
power supply.
2. Incoming water is heated up inside the heating flask when it is
flowing through the heating element. Water temperature in the
water supply main may vary depending on a season from +3° to
+20°, so, in winter water flow shall be less than in summer to assure
the optimum water temperature.
3. Water flow is controlled by the tap at water inlet to or outlet from
water heater. When there is water flow, and water pressure is not less
than 0.15 MPa, heating is switched on automatically, and indicating
lamp 2 located at the front panel lights up (see Fig.3).
4. After heating is switched on, you need to wait for 10-20 seconds to
let temperature of heated water stabilize.
5. The tap at the inlet nozzle (cold water inlet) can be used to regulate
hot water temperature. By reducing water flow you increase water
temperature at the outlet and, correspondingly, vice versa.
6. To switch off the water heater, simply close water flow at the inlet to
or outlet from the device; hydraulic flow sensor automatically opens
the circuit of power supply to heating element, and indicating lamp 2
located at the front panel goes down (see Fig.6). For the subsequent
switching on of heating it is enough to reopen the water supplying
or water draining tap.
7. Temperature switch stops the power supply to heating element in
the event of water overheating inside water heater. If water heater is
connected to the electric main, and water heating is switched on, but
water is not heated up, it means that the temperature switch has
tripped out or was not enabled. To return the water heater to
operating mode, the button at temperature switch shall be pressed.
Proceed as follows:
Switch off the power supply to water heater, remove the front panel,
press the black button located in the central part of temperature switch
till it clicks; the temperature switch is located at water heater flask.
ATTENTION!
Do not switch on the water heater if there are grounds to suspect
that water inside it has frozen.
ATTENTION!
If these activities have not resulted in any positive outcome or tem-
perature switch trips out repeatedly within a short period of time,
switch off power supply to water heater, close water supply to water
heater and address the Authorized Timberk Service Center located
at your region to receive any advice or maintenance. For the address
of the Authorized Service Center, please, consult with the seller or
visit our web-site at .www.timberk.com
1. Power supply indicator
Blinks if the device is power supplied, and
lights up when device is switched on.
2. Heating indicator
Lights up when water is heated.
3. LED-display
The display shows the current water
temperature value, and when
temperature is set  desired water
temperature value.
4. « » button
Is used to switch on and switch off the
device.
5. « » button
Is used to reduce water temperature
value.
6. « » button
Is used to increase water temperature
value.
12
3
4
6
5
. 15
WATERMASTER III Series. Water Heater Models: WHE 12.0 XTL C1, WHE 18.0
XTL C1, WHE 21.0 XTL C1, WHE 24.0 XTL 1.
Control Panel

15
www.timberk.com  instant water heater
Water Heater Operation
1. During the first water heater start-up or after long-term non-use, fill
the device with water by opening the cut-off tap at cold water
supply line, and make sure that there is a steady cold water flow at
water outlet at the consumption point, after that switch on the
device power supply, indicating lamp 1 at the control panel (see
Fig.15) starts blinking.
2. To switch on the device, press « » button at the control panel,
power supply indicator 1 (see Fig.15) will be constantly lit up.
3. Water temperature can be set within +35° to +60° range with the
help of « » button (value increase) and « » (value decrease). If
water heater does not heat up to the temperature set, water flow
shall be reduced with the help of the tap at the inlet nozzle.
4. Water flow is controlled by the tap at water inlet to or outlet from
water heater. When there is water flow, and water pressure is not
less than 0.1 MPa, heating is switched on automatically, and
indicating lamp 2 located at the control panel lights up (see Fig.15).
5. After heating is switched on, you need to wait for 10-20 seconds to
let temperature of heated water stabilize.
6. Incoming water is heated up inside the heating flask when it is
flowing through the heating element. Water temperature in the
water supply main may vary depending on a season from +3° to
+20°, so, in winter water flow shall be less than in summer to
assure the optimum water temperature.
To switch off the water heater, simply close water flow at the inlet
to or outlet from the device; electronic flow sensor automatically
opens the circuit of power supply to heating element, and
indicating lamp 2 located at the control panel goes down (see
Fig.15), and power supply indicator 1 starts blinking. For the
subsequent switching on of heating it is enough to reopen the
water supplying or water draining tap.
7. Temperature switch stops the power supply to heating element in
the event of water overheating inside water heater. If water heater
is connected to the electric main, and water heating is switched on,
ATTENTION!
Do not switch on the water heater if there are grounds to suspect
that water inside it has frozen.
but water is not heated up, it means that the temperature switch
has tripped out or was not enabled. To return the water heater to
operating mode, the button at temperature switch shall be pressed.
Proceed as follows:
- Switch off the power supply to water heater, remove the front
panel, press the black button located in the central part of
temperature switch till it clicks; the temperature switch is located at
water heater flask.
ENGLISH
ATTENTION!
If these activities have not resulted in any positive outcome or tem-
perature switch trips out repeatedly within a short period of time,
switch off power supply to water heater, close water supply to water
heater and address the Authorized Timberk Service Center located
at your region to receive any advice or maintenance. For the address
of the Authorized Service Center, please, consult with the seller or
visit our web-site at .www.timberk.com

www.timberk.com  instant water heater
16
9. TROUBLESHOOTING
Possible malfunctions and methods of their elimination are given in Table 4.
Table 4
8. MAINTENANCE
During use of the water heater, scale may appear in nozzle openings of the
shower spout. This reduces efficiency of heating, deteriorates water spray-
ing, and increases water pressure in the heating vessel. For prevention of
such phenomena, it is necessary to periodically clean the nozzle using
household chemical agents and soft brushes. Do not use abrasive cleaning
substances and inappropriate chemical agents.
a) Outer care:
- Switch off the appliance and allow it to fully cool down.
- Clean the outer surface of the appliance enclosure using a slightly moist-
ened soft cloth and then wipe it dry. Do not use abrasive cleaning sub-
stances.
b) Filter cleaning:
If water flow rate from the heater decreases, it is necessary to clean the
coarse filter installed at the cold water inlet to the water heater. Use the
following procedure:
- Switch off the appliance and allow it to fully cool down.
- Shut off cold water feeding.
- Unscrew the cold water feed hose from the water heater, remove the
coarse strainer and flush it under a jet of flowing water.
- Restore the inlet connections in the reverse sequence.
Problem
Power supply indicator
does not light up when
power is switched on.
Indicating heating lamp
does not light up, water is
not heated.
Water is not running from
hot water outlet tap.
Water leakage.
Water at the outlet from
water heater is sometimes
hot, sometimes cold.
The heating indicator
«Power» continues
glowing, while the water
inlet valve is closed.
Possible causes
1. No power.
2. Temperature limiting device 
temperature switch has tripped out
or was not enabled.
3. Defective printed circuit board.
4. Current leakage.
1. Insufficient water flow.
2. Temperature limiting device
actuated.
3. Too low pressure at water
supply system.
1. Water supply is switched off.
2. Cold water inlet tap is closed.
Problem with leak tightness of
connections
1. Unstable water pressure.
2. Temperature of water at the
outlet from water heater is too
high, overheating protection
trips repeatedly.
Malfunction of water flow sensor.
Troubleshooting method
1. Check that electric power supply is
connected.
2. Enable temperature switch.
3. Address the maintenance expert of
Timberk Service Center.
1. Increase water flow.
2. Wait till the temperature
limiting device cools down and
operates (for Watermaster I
Series).
3. Switch on the temperature
switch (for Watermaster II Series).
4. Wait till normal water pressure
builds up in the system.
1. Wait till water supply in the water
supply system is restored.
2. Open the cold water inlet tap.
Restore leak tightness of
connections.
1. Use water heater as soon as water
pressure stabilizes.
2. Reduce heating capacity, increase
water flow.
Address the maintenance expert of
Timberk Service Center.

380/50
V/Hz ~3
connector thermal
cut-out


power
cards 1,2
COM2
COM1,COM3,COM4
PCB1
PCB2
heating element
ux sensor
temperature
sensor
transformer
L2
L3
L1
1
2
3
1 2 345
678910
R1 R2 R3 R4 R5
capacity
17
www.timberk.com  instant water heater
11. DISPOSAL
Upon expiration of service life, the water heater shall be disposed. For
more details regarding disposal of the water heater, please contact a
representative of the local authorities.
Service life of a device is 5 years.
10. ELECTRICAL SCHEMATIC DIAGRAM
WATERMASTER III Series. Water Heater Models: WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1.
220/50
V/Hz
thermal
cut-out
R1
connector
indicator
light
R2
K1
K2
heating element
WATERMASTER III Series. Water Heater Models: WHE 12.0 XTL C1, WHE 18.0
XTL C1, WHE 21.0 XTL C1, WHE 24.0 XTL 1.
WATERMASTER III Series. Water Heater Models: WHE 5.0 XTN Z1, WHE 6.0
XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1.
N
L
G
ow
switch
temperature
fuse indicator
light heating
element
Power card
NPL LED
ENGLISH

18www.timberk.com    18www.timberk.com   
     -
    ,      -
  .
    ,
   ,   
   ,  
.  ,   ,
    ,
  «»    , 
   , 
    .
     
      
 ,   
,    ,   
,  -    
 .
2.  
  ,   
 .     -
      
     ,   
  .
1.       
  , ,    
 .    ,    -
  .
2.   ,     -
,   ,     
  .   -
      
  .
3.       
 ,     -
.     
   .
4.    ,   .
5.         .
:
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8. 
9.  
10.   
11. 
12.   
 !
       
   Timberk.    .
     -
  .    
,        -
,  ,      0°.
        
      
  .  ,   -
,   ,  
  ,   , 
  ,     -
 TIMBERK    .
1.  
      
  .
       -
,   ,     -
      .  -
      ,  -
,  ,     -
.       
   .
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
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www.timberk.com   
6.     
,      ,   .
7.        -
 .
8.       -
      .   -
      
   .
9.        -
       .
10.   ,  ,  
   .
11.       -
 .         -
   -   !
12.      
  .
13.      -
 ,  . -
        
.
14.      
( )   ,  
 ,   -
  ,         -
      , -
   . , ,   
  .
15.      
    .    -
      -
     .
16.   ,      
     .
17.       -
.
18.       
.
19.     ,
       
     .
27.      .
!
    .
20.        , ..  -
        -
 (.  IN -, OUT -). 
     
,    .  -
         . -
     -
  ,    .
21.      .  -
     ,  
   .
22.       -
,    .
23.      ( .. 
 ).
24.        +35 °.
25.       -
       
,        .
26.       
.

www.timberk.com   
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3.  
 WATERMASTER I.   WHE 3.5 XTR H1, WHE
4.5 XTR H1, WHE 5.5 XTR H1.
1.        -
.
2.      
 ;    -
  
3.    (  -
),    ,  
 .
4.   ,   
,      , 
       .
5.      -
,         -
    .
6.  ,      
    ,     .
         -
  ,   ,  
       -
 TIMBERK.
 WATERMASTER II.   WHE 5.0 XTN Z1, WHE
6.0 XTN Z1, WHE 6.5 XTN Z1, WHE 7.0 XTN Z1, WHE 8.0 XTN Z1.
1.        -
.
2.     ;
    

3.   (),  -
  ,    .
4.   ,   
,      , -
    ,     
  .
5.      
  ( )      
 .
6.  ,      
    ,    
.          -
  ,   , 
       
 TIMBERK.
 WATERMASTER III.   WHE 12.0 XTL C1,
WHE 18.0 XTL C1, WHE 21.0 XTL C1, WHE 24.0 XTL C1.
1.        -
.
2.     ;
    

3.    ( 
  ),   
,    .
4.   ,   -
 ,      ,
    ,     
  .
5.      
  ( )      
 .
6.    
  .
7.      
  LED-    1 .
8.      .
9.       
.        
   ,   ,
        -
  TIMBERK.