Sunsystem MB NL2 V/EL 50 User manual

EN
WALL-HUNG WATER HEATERS
Vertical and Horizontal Modifications
50 L, 80 L, 100 L, 120 L, 150 L, 200 L
TECHNICAL PASSPORT.
INSTALLATION and OPERATION MANUAL
Version 3.0

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
TABLE OF CONTENTS
INTRODUCTION .....................................................................................................4
1. REQUIREMENTS FOR INSTALLATION ..................................................................... 5
2. PREVENTION AND MAINTENANCE.................................................................... 6
3. CONNECTING A BOILER SAFETY VALVE........................................................................ 7
4. ELECTRIC HEATING ELEMENT.................................................................................7
5. ANODE PROTECTO..................................................................................................7
6. WATER HEATER МВ NL2 V/EL - electric (without coil)............................................8
7. WATER HEATER МВ NL2 Н/EL - electric (without coil)...........................................9
8. WATER HEATER МВ NL2 V/S1 - with one coil........................................................10
9. WATER HEATER МВ NL2 Н/S1 - with one coil.......................................................11
10. WATER HEATER МВ-L NL2 V/S1 - with one coil.....................................................12
11. WATER HEATER МВ NL2 PRL - with two parallel coils........................................ 13
12. WATER HEATER ВВ NL2 V/EL - electric (without coil) ...........................................14
13. WATER HEATER ВВ NL2 Н/EL - electric (without coil) ...........................................15
14. WATER HEATER ВВ NL2 V/S1 - with one coil........................................................16
15. WATER HEATER ВВ-L NL2 V/S1 - with one coil.................................. .................. 17
16. WATER HEATER ВВ NL2 Н/S1 - with one coil............................... ........................18
17. WATER HEATER ВВ NL2 V/S2 - with two coils............................. ........................19
18. WATER HEATER NL2 ВВ PRL - with two parallel coils................................... .......20
19. TRANSPORT AND PACKAGING..............................................................................22
20. WARRANTY.................................................... ......................................................22
21. RECYCLING AND WASTE DISPOSAL..................................................................... 23

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
been prepared to make you familiar with the
installation, operation and maintenance of the
water heater. Observing the instructions of this
Manual is in the interest of the customer, and
it is one of the guarantee terms and conditions
These water heaters are used to provide hot
water at home. They shall be combined with
solar panel collectors or a boiler. They provide
hot water for great number of consumers in
case of central distribution of the hot water.
Wall-hung water heaters Model MB NL S1/ BB
NL S2 are respectively with one or two built-
in heat-exchanger coil/coils for connection to
solar system and/or heating boiler.
All products are manufactured in compliance
with all safety and quality directives of
European Union.
Advantages:
- Highly effective insulation:
Rigid PPU with thickness 20 mm for models
MB NL.
Rigid PPU with thickness 32 mm for models
BB NL.
- Great heat exchange surface of the coils,
which provides quick and effective heat
transfer.
- These water heaters combine two
independent heat sources (boiler and sun
system) in a low capacity water container.
1. REQUIREMENTS FOR INSTALLATION
1.1. Installation of the boiler in a room
• The temperature in the room where the
appliance is installed must always exceed 0 ° C.
• There must be a siphon on the wastewater
installation.
• The position of the appliance must be
in accordance with its degree of protection
against water penetration, marked on the plate
with its technical data. The boiler must not be
directly sprayed or flooded with water.
• The length of the connecting pipes from the
boiler to the consumer should be as short as
possible in order to reduce heat losses.
• It is obligatory to leave a distance between the
appliance and the surrounding walls in order for
it to be unobstructedly inspected and tied to the
INTRODUCTION
NES Ltd. with Head Office
in Shumen, Bulgaria, is specialized in
manufacturing of alternative energy sources.
Two hundred highly qualified employees
work for this company. The company has
production facilities of its own which take an
area of 30,000 square meters. Many times our
products have been awarded with gold medals
at the International Fair Plovdiv. In 2004 our
production was certified under the Quality
Management System ISO 9001:2000, and in
2005 it got certificates CE and TUV.
For several years now the company has been
manufacturing and selling sun systems with
the trademark SUNSYSTEM. These products
find better and better realization both on
Bulgarian and international markets. The
company has a distribution network all over
the country which consists of 52 distributors
and 100 retailers. At that moment NES Ltd. has
subsidiaries in Italy, Spain and Romania. We
sell our products in many countries in Europe,
Asia and Africa.
Dear Customers,
We strongly hope that the appliance
you have bought from us will contribute to
creating comfort at you homes and decreasing
the energy expenditure. This User Manual
includes technical description of the unit you
have bought and operation instructions. It has

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
• If there is a risk of water freezing in the water
tank: drain the water tank completely or let
the boiler run continuously.
• Pressure regulator. If the pressure in the
water supply network exceeds 0.5 MPa (5 bar),
it is desirable to install a pressure regulator
at the cold water inlet. We recommend that
the regulator be set to 0.4 MPa (4 bar), thus
ensuring the correct operation of the product
and its optimal service cycle.
• Expansion vessel. We recommend installing
an expansion vessel to absorb water expansion
when heated.
The volume and type are determined by a
qualied designer in accordance with the
technical data of the boiler, the system in place
and the local and European safety standards!
Installaon is carried out by a qualied
technician in accordance with his operang
instrucons.
• Pipe insulation. In order to optimize the
efficiency of the appliance, we recommend
that all its pipe terminals and the elements
connected to them be covered with a suitable
thermal insulation material.
• Before filling the boiler with water, check all
screw connections (bolts on the inspection
cover for flange, plugs and anode). In very rare
cases - during transport, loading and unloading
operations, it is possible for the bolted joints to
loosen. The tightening torque of the inspection
cover bolts is 160-190 Nm.
• Filling the boiler with water.
- The hot water tap on the
farthest mixer tap opens.
- The tap of the water entering the boiler is
opened.
- The system is expected to be deaerated, an
indicator of which is a dense and strong jet of
water from the open mixer.
- Make sure that there are no leaks in the
piping connections of the installation and the
bolted connections on the cover of the boiler
flange. If necessary - tighten.
- Check the safety valve by lifting its lever - a
thick and strong jet of water must flow through
its side opening for about a minute.
Such a check for the serviceability of the
installation.
• The orientation for mounting the water heater
contained in the model name - V - vertical and
H - horizontal mounting, should not be changed.
Horizontal models are always mounted with the
electrical part on the left.
• The boiler is fixed to the wall of the room by
means of steel bolts (studs) with a diameter of
10-12 mm, which are firmly fixed in the wall.
It is forbidden to install the water heater to
decorative walls.
1.2. Connecting the boiler to the plumbing.
• The installation to which the boiler is connected
and the elements included in it must withstand a
continuous temperature of 85 ° C and a pressure
twice as high as the operating temperature of the
appliance.
• It is MANDATORY to install a safety valve
(included in the product set) on the cold water
pipe, observing the arrow on its housing,
showing the direction of water flow through it.

IMPORTANT! There must be no shut-
off or non-return valve between
the safety valve and the boiler.
Do not block the side opening
and / or block the valve lever.
Failure or incorrect installation of the
safety valve is grounds for voiding
the appliance‘s warranty.
• Drain connection (hose) of safety valve.
When the boiler is running, in some cases it
is possible to release a small amount of water
from the relief valve as a result of a linear
expansion of the water. For this reason, it is
necessary to build a diversionary connection,
which is to be comply with local and European
standards and safety provisions! It must be of
sufficient inclination for water drainage. Both
ends must be open to the atmosphere and be
provided with anti-freeze. At pipe installation,
take safety measures from valve firing burns.
• Do not exceed the working pressure of 0,8
MPa (8 bar).
• If the pipes of the plumbing system are made
of copper or other metal, other than steel, as
well as when using brass connecting elements,
it is mandatory to install dielectric fittings at
the inlet and outlet of the water heater.

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
protection of the thermostat during normal
operation of the appliance.
If the heat exchanger will not be used
temporarily and is not connected to the
installation of the additional heat source, it
must be filled with a propylene glycol solution
suitable for heating systems.
The connection of a boiler with a heat
exchanger to the additional heat source
is performed only by qualified persons in
accordance with the project developed by a
company specialized in this field.
1.4. Connection to the electrical
installation.
IMPORTANT! Before connecting the
boiler to the electrical installation,
make sure that its water tank is full
of water!
This appliance must be connected to the
ground circuit of the electrical installation. The
water heater is supplied by a separate circuit,
filled with a three-core insulated cable with a
cross section of 2.5 mm2per core.

IMPORTANT! It is mandatory to
install an electrical fuse (10 A at a
heater power of up to 2 kW and
16 A at a power of 3 kW) in the
electrical circuit supplying the water
heater, which provides complete
disconnection of all poles in the case
of overvoltage category III.
It is recommended, in case the current norms
do not oblige him, to have a fault current
protection installed in the current circuit.
The phase wire of the power cable is connected
to the terminal marked L of the thermostat,
the neutral - to the terminal with N, and the
protective - to the stud of the flange cover. To
secure the power cord against displacement, it
is necessary to tighten it in the bracket located
right next to the cable hole on the plastic cover
of the boiler.
The complete disconnection of the water
heater from the electrical installation is done
by an external switch (not included), installed
in the electrical circuit between the electrical
fuse and the boiler.
valve is recommended to be done periodically
every 2 weeks or at each stop and start of
the central water supply of the installation.
If, at normal pressure in the installation, no
water flows out of the valve orifice or the flow
is weak, it must be replaced.
• Draining the water from the boiler.
- The appliance is disconnected
from the power supply.
- The tap of the water entering the boiler is
closed.
- Open the hot water tap of the mixer or
demonstrate the fitting of the hot water outlet
of the boiler.
- Raise the safety valve lever and wait until
water stops flowing from its side opening.
It should be borne in mind that the above
actions do not ensure complete drainage of
water from the vessel. This can only be done
by a specialist, because it involves removing
the cover of the boiler flange.

It is forbidden to turn on the power
supply and / or circulation of the heat
carrier through the heat exchangers
of the boiler while its water tank is
partially or completely empty.
1.3. Connecting a built-in heat exchanger to
the installation of an additional heat source.
The connection is made when all the
requirements of the company that designed
the installation are met. It is forbidden to install
shut-off valves at both the inlet and outlet of
the heat exchanger. To increase the efficiency
of the heat exchanger, it is mandatory for the
heat carrier to be driven by a circulation pump.
An aqueous solution of propylene (ethylene)
glycol in liquid phase with composition and
values of the indicators in the admissible
norms, determined in the regulations related
to the water legislation, or a special aqueous
solution, which is not aggressive to the material
of the heat exchanger, is used as a heat carrier.
It is necessary for the heat carrier to have a
temperature not higher than 85 ° С and for
a control device with a suitable temperature
setting to be installed in its circuit, which
does not allow the activation of the thermal

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL

IMPORTANT! The connection of
the electric heater and the check
of the functionality of the water
heater should be carried out only by
qualified electricians.
2. PREVENTION AND MAINTENANCE
This appliance is not intended for use by people
(including children) with physical, sensory or
mental disabilities, or people without work
experience, unless they are operated by
someone responsible for their safety or have
been instructed in advance. to work with the
device.
Children should not be allowed to play with the
appliance.
• Periodically open the safety valve to check
its functionality.
• For reliable operation of the boiler in areas
with calcareous water, it is recommended to
treat it with softener.
• The water tank of the boiler is recommended
to be cleaned of limestone at least every 2 years,
and this period can be shortened depending on
the hardness of the water. When cleaning, it is
desirable to inspect the anode protector and
replace it if necessary.
This procedure should only be performed by
a specialist.
3. CONNECTING A BOILER SAFETY VALVE
Symbols:
1. Inlet cold water - network
2. Check valve
3. Tee
4. Pressure relief valve
5. Inlet cold water - boiler
6. Shut-off valve (drainage)
There must be no shut-off valve
between the safety valve and the
cold water inlet of the boiler!
4. ELECTRIC HEATING ELEMENT
The solar water heater SUNSYSTEM
is equipped with an electric heater:
1500W, 2000W or 3000W / 230 V.
They are equipped with a double-protected
thermostat with a control range from 30 ° C to
80°C/operating temperature 95°C;
3 + 2 contacts 10(2.5) A - 230 V;
protection IP 40, differential 8 ° С ± 3 ° С.

IMPORTANT! The connection of the
electric heater should be carried
out only by qualified electricians.
The appliance must be properly
connectedtoboththecurrent-carrying
conductors and the protective circuit!
Do not connect the appliance to the
electrical installation before filling its
water tank with water!
5. ANODE PROTECTOR
The magnesium anode protector protects
from corrosion of the inner surface of the water
tank.
Over time, limestone is deposited
during the operation of the product
under the influence of high temperature
(so-called scale). Therefore, we recommend
that the product be serviced by an authorized
service center every two years. The prophylaxis
must include inspection and cleaning of the
anode protector, which is replaced with a new
one if necessary. The performed prophylaxis is
reflected in the warranty card of the product.

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
МВ NL2
V/EL 50
MB NL2
V/EL 80
MB NL2
V/EL 100
MB NL2
V/EL 120
Capacity L 50 80 100 120
Height Н, mm 600 800 960 1120
Diameter D, mm Ø 440 Ø 440 Ø 440 Ø 440
Insulaon mm rigid PPU, thickness 20 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2/3 2/3 2/3 2/3
Weight kg 24.6 30 35 39.4
Cold water inlet A Rp 1/2” Rp 1/2” Rp 1/2” Rp 1/2”
Hot water outlet B Rp 1/2” Rp 1/2” Rp 1/2” Rp 1/2”
Inspecon opening/Flange O, О1, mm, Ø 132/90 Ø 132/90 Ø 132/90 Ø 132/90
Anode P1, P2
/ / / /
Thermostat T
   
Wall prop Х
   
6. ELECTRIC WATER HEATER MB NL2 V/EL - 50 L, 80 L, 100 L, 120 L
Electric (without coil). Vertical models.
MB NL2 V/EL 50-120 L
O, ø
A
240 240
120
H
BA
X
X
C
T
B
Anode
Wall
prop
Wall
prop
20 mm
rigid PPU
180
O1, ø
Hot water
outlet 1/2’’
U
El.heating
element
Cold water inlet 1/2’’
CAUTION!
Relief valve
Anode

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
MB NL 2
H/EL 80
MB NL2
H/EL 100
MB NL2
H/EL 120
Capacity L 80 100 120
Length Е, mm 800 960 1120
Diameter D, mm Ø 440 Ø 440 Ø 440
Insulaon mm rigid PPU, thickness 20 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2/3 2/3 2/3
Weight kg 30 35 39.4
Cold water inlet A Rp 1/2” Rp 1/2” Rp 1/2”
Hot water outlet B Rp 1/2” Rp 1/2” Rp 1/2”
Inspecon opening/Flange O, О1, mm, Ø 132/90 Ø 132/90 Ø 132/90
Anode P1, P2
/ / /
Thermostat T
  
Wall prop/ Distance between both stands Х1, mm 380 540 700
7. ELECTRIC WATER HEATER MB NL2 H/EL - 80 L, 100 L, 120 L
Electric (without coil). Horizontal models.
MB NL2 H/EL 80-120 L
X
O, ø
O1, ø
X
240
80
BA
C
U
T
X1
E
B/A
X
20 mm
rigid PPU
Anode
Wall prop Wall prop
Hot water outlet 1/2’’
Anode
Electric heating element
Wall prop
CAUTION!
Relief valve’
Cold water inlet 1/2’’

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
8. WATER HEATER MB NL2 V/S1 - 80 L, 100 L, 120 L.
With one coil. Vertical models.
MB NL 2 V/S1 80 MB NL2 V/S1 100 MB NL2 V/S1 120
Capacity L 80 100 120
Height Н, mm 800 960 1120
Diameter D, mm Ø 440 Ø 440 Ø 440
Insulaon mm rigid PPU, thickness 20 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2/3 2/3 2/3
Weight kg 36.4 43.6 49
Cold water inlet A Rp 1/2” Rp 1/2” Rp 1/2”
Coil water outlet B Rp 1/2” Rp 1/2” Rp 1/2”
Operang pressure / Max.Coils temp. S1 MPa(bar)/0C 1.6(16)/110 1.6(16)/110 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25) 2.5(25) 2.5(25)
Coil capacity S1 L 2.04 2.70 2.70
Heat exchange surface S1 m20.40 0.53 0.53
Coil inlet S1i, mm, Rp3/4” 426 540 540
Coil outlet S1o, mm, Rp3/4” 140 140 140
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S2
kW (m3/h) 8.2(0.20) 9(0.22) 9(0.22)
NL – power coecient at 60°C, S1/S2 NL 60°C 1 1.3 1.3
Pressure drop Δp, S1/S2 Δp, mbar 50 55 55
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90 132/90
Anode P1, P2
/ / /
Thermostat T
  
Wall prop X, mm
  
MB NL2 V/S1 80-120 L
О1, ø
240
120
AB
X
C
O, ø
A
240
180
H
X
T
B
U
S1o
S1i
Wall prop
20 mm rigid PPU
Hot water
outlet 1/2’’
Anode
Anode
Coil outlet 3/4’’
Coil inlet 3/4’’
Sensor
El.heating
element
Cold water inlet 1/2’’
CAUTION!
Relief valve

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
9. WATER HEATER MB NL2 H/S1 - 80 L, 100 L, 120 L.
With one coil. Horizontal models.
MB NL2 H/S1 80 MB NL2 H/S1 100 MB NL2 H/S1 120
Capacity L 80 100 120
Length Е, mm 800 960 1120
Diameter D, mm Ø 440 Ø 440 Ø 440
Insulaon mm rigid PPU, thickness 20 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 1.5 1.5 1.5
Weight kg 36.4 43.6 49
Cold water inlet A, mm, Rp 1/2” 45 45 45
Hot water outlet B, mm, Rp 1/2” 395 395 395
Operang pressure / Max.Coils temp. S1 MPa(bar)/0C 1.6(16)/110 1.6(16)/110 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25) 2.5(25) 2.5(25)
Coil capacity S1 L 2.04 2.70 2.70
Heat exchange surface S1 m20.40 0.53 0.53
Coil inlet S1i, mm, Rp3/4” 350 350 350
Coil outlet S1o, mm, Rp3/4” 100 100 100
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S2
kW (m3/h) 8.2(0.20) 9(0.22) 9(0.22)
NL – power coecient at 60°C, S1/S2 NL 60°C 1 1.3 1.3
Pressure drop Δp, S1/S2 Δp, mbar 50 55 55
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90 132/90
Anode P1, P2
/ / /
Thermostat T
  
Wall prop/ Distance between both stands X1, mm 380 540 700
MB NL2 H/S1 80-120 L
O, ø
О1, ø
X
C
X
A
B
U
T
X1
E
X
S1i
S1o
Wall prop
20 mm rigid PPU
Anode
Anode
El.heating
element
Hot water
outlet 1/2’’
Cold water inlet 1/2’’
CAUTION!
Relief valve
Wall prop
Coil outlet 3/4’’
Coil inlet 3/4’’
Sensor
Wall prop

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
MB-L NL2 V/S1 80-120 L
О1, ø
240
120
AB
X
C
O, ø
A
240
180
H
X
B
US1o
S1i
Anode
Wall prop
Cold water inlet 1/2’’
CAUTION!
Relief valve
Hot water
outlet 1/2"
20 mm rigid PPU
Coil inlet 3/4’’
Coil outlet 3/4’’
El.heating
element
MB-L NL2
V/S1 80
MB-L NL2
V/S1 100
MB-L NL2
V/S1 120
Capacity L 80 100 120
Height Н, mm 800 960 1120
Diameter D, mm Ø 440 Ø 440 Ø 440
Insulaon mm rigid PPU, thickness 20 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2 2 2
Weight kg 31 40 42
Cold water inlet A Rp 1/2” Rp 1/2” Rp 1/2”
Coil water outlet B Rp 1/2” Rp 1/2” Rp 1/2”
Operang pressure / Max.Coils temp. S1 MPa(bar)/0C 1.6(16)/110 1.6(16)/110 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25) 2.5(25) 2.5(25)
Coil capacity S1 L 1.1 1.5 1.5
Heat exchange surface S1 m20.2 0.3 0.3
Coil inlet S1i, mm, Rp3/4” 560 660 660
Coil outlet S1o, mm, Rp3/4” 180 180 180
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S2
kW (m3/h) 2.9(0.07) 6(0.14) 6(0.14)
NL – power coecient at 60°C, S1/S2 NL 60°C 1 1.3 1.3
Pressure drop Δp, S1/S2 Δp, mbar 50 55 55
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90 132/90
Anode P
  
Thermostat T
  
Wall prop X, mm
  
10. WATER HEATER MB-L NL2 V/S1 - 80 L, 100 L, 120 L.
With one coil. Vertical models.

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INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
20 mm
rigid PPU
Wall
prop
Anode
Cold water inlet 1/2’’
CAUTION!
Relief valve
Hot water
outlet 1/2’’
Coil outlet 3/4’’
Coil outlet 3/4’’
Coil inlet 3/4’’
Coil inlet 3/4’’
El.heating
element
Sensor
Sensor
Sensor
Anode
MB NL2 PRL 100-120 L
MB NL2 PRL 100 MB NL2 PRL 120
Capacity L 100 120
Height Н, mm 960 1120
Diameter D, mm Ø 440 Ø 440
Insulaon mm rigid PPU, thickness 20 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2/3 2/3
Weight kg 48 52
Cold water inlet A Rp 1/2” Rp 1/2”
Hot water outlet B Rp 1/2” Rp 1/2”
Operang pressure / Max.Coils temp. S1/S2 MPa(bar)/0C 1.6(16)/110 1.6(16)/110
Test pressure S1/S2 MPa(bar) 2.5(25) 2.5(25)
Coil capacity S1/S2 L 2.8/1.6 2.8/1.6
Heat exchange surface S1/S2 m20.54/0.31 0.54/0.31
Lower coil inlet S1 S1i, mm, Rp 3/4” 738 738
Lower coil outlet S1 S1o, mm, Rp 3/4” 141 141
Upper coil inlet S2 S2i, mm, Rp 3/4” 638 638
Upper coil outlet S2 S2o, mm, Rp 3/4” 258 258
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S1
kW (m3/h) 9(0.22)/8(0.2) 9(0.22)/8(0.2)
NL – power coecient at 60°C, S1/S2 NL 60°C 1.3/1 1.3/1
Pressure drop Δp, S1/S2 Δp, mbar 55/50 55/50
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90
Anode P1, P2
/ /
Thermostat T
 
Wall prop Х, mm
 
11. WATER HEATER MB NL2 PRL - 100 L, 120 L.
With two parallel coils. Vertical models.

14
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
ВВ NL2
V/EL 80
ВB NL2
V/EL 100
ВB NL2
V/EL 120
ВB NL2
V/EL 150
ВB NL 2
V/EL 200
Capacity L 80 100 120 150 200
Height Н, mm 685 815 945 1085 1355
Diameter D, mm Ø 520 Ø 520 Ø 520 Ø 520 Ø 520
Insulaon mm rigid PPU, thickness 32 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2/3 2/3 2/3 2/3 2/3
Weight kg 38 42.2 50 56 68
Cold water inlet A, mm Rp 1/2” Rp 1/2” Rp 1/2” Rp 1/2” Rp 3/4” 170
Hot water outlet B, mm Rp 1/2” Rp 1/2” Rp 1/2” Rp 1/2” Rp 3/4” 1120
Recirculaon R, mm Rp 3/4” 877
Inspecon opening/Flange O, О1, mm, Ø 132/90 Ø 132/90 Ø 132/90 Ø 132/90 Ø 132/90
Anode P1, P2
/ / / / /
Thermostat T
    
Wall prop/ Distance between both stands Х1, mm 630 900
12. ELECTRIC WATER HEATER BB NL2 V/EL - 80 L, 100 L, 120 L, 150 L, 200 L.
Electric (without coil). Vertical models.
O1, ø
240
120
BA
X
C
O, ø
Wall prop
A
240
200
H
X
T
B
Anode
Anode
32 mm rigid PPU
U
El.heating
element
Cold water inlet 1/2’’
CAUTION! Relief valve.
Hot water
outlet 1/2’’
Wall prop
R
B
A
X
X1
Recirculation
El.heating
element
Anode
Anode
Wall prop
Cold water inlet 3/4’’
CAUTION!
Relief valve
Hot water
outlet 3/4’’
32 mm rigid PPU
U
Anode
BB NL V/EL 200 LBB NL2 V/EL 80-150 L

15
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
13. ELECTRIC WATER HEATER BB NL2 H/EL - 80 L, 100 L, 120 L, 150 L, 200 L.
Electric (without coil). Horizontal models.
ВВ NL2
Н/EL 80
ВB NL2
Н/EL 100
ВB NL2
Н/EL 120
ВB NL2
Н/EL 150
ВB NL2
Н/EL 200
Capacity L 80 100 120 150 200
Length Е, mm 685 815 945 1085 1355
Diameter D, mm Ø 520 Ø 520 Ø 520 Ø 520 Ø 520
Insulaon mm rigid PPU, thickness 32 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 1.5/2 1.5/2 1.5/2 1.5/2 1.5/2
Weight kg 38 42.2 50 56 68
Cold water inlet A, mm, Rp 1/2” 65 Rp 1/2” 65 Rp 1/2” 65 Rp 1/2” 65 Rp 3/4” 65
Hot water outlet B, mm, Rp 1/2” 455 Rp 1/2” 455 Rp 1/2” 455 Rp 1/2” 455 Rp 3/4” 455
Recirculaon R, mm - - - - Rp 3/4” 260
Inspecon opening/Flange O, О1, mm, Ø 132/90 Ø 132/90 Ø 132/90 Ø 132/90 Ø 132/90
Anode P1, P2
/ / / / /-
Thermostat T
    
Wall prop/ Distance between both stands Х1, mm 230 360 490 630 900
X
O, ø
O1, ø
X
240
A
B
C
U
T
X1
E
X
BB NL H/EL 80-150
240
X1
O, ø
O1, ø
X
C
BB NL H/EL 200
A
B
R
X X
Wall prop
Cold water inlet 3/4’’
CAUTION!
Relief valve
32 mm rigid
PPU
32 mm
rigid PPU
U
Cold water inlet 1/2’’
CAUTION!
Relief valve
Hot water
outlet 3/4’’
Hot water
outlet 1/2’’
Anode
Anode
Recirculation
3/4’’
Wall prop
Wapp prop
Wall
prop
100
El.heating
element
El.heating
element

16
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
14. WATER HEATER BB NL2 V/S1 -
80 L, 100 L, 120 L, 150 L, 200 L.
With one coil. Vertical models.
BB NL2 V/S1 80-150 L BB NL2 V/S1 200 L
ВB NL2
V/S1 80
ВB NL2
V/S1 100
ВB NL
V/S1 120
ВB NL2
V/S1 150
ВB NL2
V/S1 200
Capacity L 80 100 120 150 200
Height Н, mm 685 815 945 1085 1355
Diameter D, mm Ø 520 Ø 520 Ø 520 Ø 520 Ø 520
Insulaon mm rigid PPU, thickness 32 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 2/3 2/3 2/3 2/3 2/3
Weight kg 42.2 51 55.8 70 82.4
Cold water inlet A, mm Rp 1/2” Rp 1/2” Rp 1/2” Rp 1/2” Rp 3/4” 170
Hot water outlet B, mm Rp 1/2” Rp 1/2” Rp 1/2” Rp 1/2” Rp 3/4” 1120
Oper. pressure / max. Coil temp.S1 MPa(bar)/0C 1.6(16)/110 1.6(16)/110 1.6(16)/110 1.6(16)/110 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25) 2.5(25) 2.5(25) 2.5(25) 2.5(25)
Coil capacity S1 L 2.04 2.70 2.70 4.07 4.07
Heat exchange surface S1 m20.40 0.53 0.53 0.80 0.80
Coil inlet S1i, mm, Rp3/4” 436 550 550 702 645
Coil outlet S1o, mm, Rp3/4” 150 150 150 150 250
Recirculaon R, mm - - - - Rp 3/4” 877
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S1
kW (m3/h) 8.2(0.20) 9(0.22) 9(0.22) 15(0.37) 15(0.37)
NL – power coecient at 60°C, S1 NL 60°C 1 1.3 1.3 1.5 1.5
Pressure drop Δp, S1 Δp, mbar 50 55 55 60 60
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90 132/90 132/90 132/90
Anode P1, P2
/ / / / /
Thermostat T
    
Wall prop/ Distance between both stands X1, mm - - - 630 900
О1, ø
A
240
240
200
120
H
BA
X
X
C
T
B
O, ø
S1i
S1o
Anode
32 mm rigid PPU
El.heating
element
Hot water
outlet 1/2"
Cold water inlet 1/2’’
CAUTION!
Relief valve
Wall prop
Coil inlet 3/4’’
Coil outlet 3/4’’’
U
B
A
О1, ø
240
X
C
O, ø
X
X1
S1o
S1i
Wall prop
Recirculation
Hot water
outlet 3/4"
Cold water inlet 3/4’’
CAUTION!
Relief valve
32 mm rigid PPU
Anode
Anode
U
El.heating
element
H
Coil inlet 3/4’’
Coil outlet 3/4’’
R
Sensor
Sensor
Anode
О1, ø
A
240
240
200
120
H
BA
X
X
C
T
B
O, ø
S1i
S1o
Anode
32 mm rigid PPU
El.heating
element
Hot water
outlet 1/2"
Cold water inlet 1/2’’
CAUTION!
Relief valve
Wall prop
Coil inlet 3/4’’
Coil outlet 3/4’’’
U
B
A
О1, ø
240
X
C
O, ø
X
X1
S1o
S1i
Wall prop
Recirculation
Hot water
outlet 3/4"
Cold water inlet 3/4’’
CAUTION!
Relief valve
32 mm rigid PPU
Anode
Anode
U
El.heating
element
H
Coil inlet 3/4’’
Coil outlet 3/4’’
R
Sensor
Sensor
Anode

17
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
15. WATER HEATER BB-L NL2 V/S1 - 150 L, 200 L.
With one coil. Vertical models.
О1, ø
A
240
240
200
120
H
BA
X
X
C
O, ø
S1i
S1o
Anode
U
B
A
О1, ø
240
X
C
O, ø
X
X1
S1o
S1i
Recirculation
Anode
U
H
R
B
Wall prop
Wall prop
32 mm rigid PPU
32 mm
rigid PPU
El.heating
element
El. heating
element
Cold water inlet 1/2’’
CAUTION!
Relief valve
Cold water inlet 3/4’’
CAUTION!
Relief valve
Hot water
outlet 1/2"
Hot water
outlet 3/4"
Coil inlet 3/4’’
Coil inlet 3/4’’
Coil outlet 3/4’’’
Coil outlet 3/4’’’
О1, ø
A
240
240
200
120 H
BA
XX
C
O, ø
S1i
S1o
Anode
U
B
A
О1, ø
240
X
C
O, ø
X
X1
S1o
S1i
Recirculation
Anode
U
H
R
B
Wall prop
Wall prop
32 mm rigid PPU
32 mm
rigid PPU
El.heating
element
El. heating
element
Cold water inlet 1/2’’
CAUTION!
Relief valve
Cold water inlet 3/4’’
CAUTION!
Relief valve
Hot water
outlet 1/2"
Hot water
outlet 3/4"
Coil inlet 3/4’’
Coil inlet 3/4’’
Coil outlet 3/4’’’
Coil outlet 3/4’’’
ВB-L NL2
V/S1 150
ВB-L NL2
V/S1 200
Capacity L 150 200
Height Н, mm 1085 1355
Diameter D, mm Ø 520 Ø 520
Insulaon mm rigid PPU, thickness 32 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 3 3
Weight kg 55 63
Cold water inlet A, mm Rp 1/2” Rp 3/4” 170
Hot water outlet B, mm Rp 1/2” Rp 3/4” 1120
Oper. pressure / max. Coil temp.S1 MPa(bar)/0C 1.6(16)/110 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25) 2.5(25)
Coil capacity S1 L 2.04 2.04
Heat exchange surface S1 m20.4 0.4
Coil inlet S1i, mm, Rp3/4” 760 860
Coil outlet S1o, mm, Rp3/4” 150 250
Recirculaon R, mm - Rp 3/4” 780
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S1
kW (m3/h) 82(0.2) 82(0.2)
NL – power coecient at 60°C, S1 NL 60°C 1 1
Pressure drop Δp, S1 Δp, mbar 50 50
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90
Anode P
 
Thermostat T
 
Wall prop/ Distance between both stands X1, mm 630 900

18
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
16. WATER HEATER BB NL2 Н/S1 -
80 L, 100 L, 120 L, 150 L, 200 L.
With one coil. Horizontal models.
ВB NL2
Н/S1 80
ВB NL2
Н/S1 100
ВB NL2
Н/S1 120
ВB NL2
Н/S1 150
ВB NL2
Н/S1 200
Capacity L 80 100 120 150 200
Length Е, mm 685 815 945 1085 1355
Diameter D, mm Ø 520 Ø 520 Ø 520 Ø 520 Ø 520
Insulaon mm rigid PPU, thickness 32 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13) 1.3(13) 1.3(13) 1.3(13) 1.3(13)
Electric heang element (oponal) kW 1.5 1.5 1.5 1.5 1.5
Weight kg 42.2 51 55.8 70 82.4
Cold water inlet A, mm Rp 1/2” 65 Rp 1/2” 65 Rp 1/2” 65 Rp 1/2” 65 Rp 3/4” 65
Hot water outlet B, mm Rp 1/2 ” 455 Rp 1/2 ” 455 Rp 1/2 ” 455 Rp 1/2 ” 455 Rp 3/4” 455
Oper. pressure / max. Coil temp.S1 MPa(bar)/0C 1.6(16)/110 1.6(16)/110 1.6(16)/110 1.6(16)/110 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25) 2.5(25) 2.5(25) 2.5(25) 2.5(25)
Coil capacity S1 L 2.04 2.70 2.70 4.07 4.07
Heat exchange surface S1 m20.40 0.53 0.53 0.80 0.80
Coil inlet S1i, mm,
Rp3/4”
385 385 385 385 385
Coil outlet S1o, mm,
Rp3/4”
135 135 135 135 135
Recirculaon R, mm - - - - Rp 3/4” 260
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S1
kW (m3/h) 8.2(0.20) 9(0.22) 9(0.22) 15(0.37) 15(0.37)
NL – power coecient at 60°C, S1 NL 60°C 1 1.3 1.3 1.5 1.5
Pressure drop Δp, S1 Δp, mbar 50 55 55 60 60
Inspecon opening/Flange O, O1,
Ø, mm
132/90 132/90 132/90 132/90 132/90
Anode P1, P2
/ / / / /-
Thermostat T
    
Wall prop/ Distance between both stands X1, mm 230 360 490 630 900
X
O, ø
О1, ø
X
240
A
B
C
U
T
X1
E
X
BB NL H/S1 80-150
O, ø
O1, ø
X
C
240
X1
BB NL H/S1 200
A
B
R
XX
S1o
S1i
S1o
S1i
Hot water
outlet 3/4’’
Hot water
outlet 1/2’’
Anode
Anode
Wall prop
Waii
prop
El. heating element
U
32 mm rigid PPU
Cold water inlet 3/4’’
CAUTON!
Relief valve
Recirculation
3/4’’
El. heating
element
Cold water
intel 1/2’’
CAUTON!
Relief valve
Anode
Wall prop
Wall prop
100
Sensor
Sensor
Sensor
Sensor
Coil
inlet 3/4"
Coil
inlet 3/4"
Coil
outlet 3/4"
Coil
outlet 3/4"

19
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
17. WATER HEATER BB NL2 V/S2 - 200 L.
With two coils. Vertical models.
О1, ø
240
X
C
O, ø
A
220
S1o
X
X
240
T
U
S1i
S2o
S2i
B
Wall prop
Anode
Anode
Wall prop
32 mm rigid PPU
Coil outlet 3/4’’
R
Recirculation 3/4’’
Coil inlet 3/4’’
Hot water
outlet 3/4’’
H
Sensor
Wall prop
Cold water inlet 3/4’’
CAUTION!
Relief valve
Coil outlet 3/4’’
Coil inlet 3/4’’
El.heating
element
Sensor
ВB NL2 V/S2
200
Capacity L 200
Height Н, mm 1370
Diameter D, mm Ø 520
Insulaon mm rigid PPU,
thickness 32 mm.
Oper. pressure / max. temperature MPa(bar)/0C 0.8(8)/95
Test pressure of tank MPa(bar) 1.3(13)
Electric heang element (oponal) kW 2/3
Weight kg 89
Cold water inlet A, mm Rp 3/4”170
Hot water outlet B, mm Rp 3/4” 1120
Oper. pressure / max. Coil temp.S1 MPa(bar)/0C 1.6(16)/110
Test pressure S1 MPa(bar) 2.5(25)
Capacity of coil S1/S2 L 4.07/2.70
Heat exchange surface of coil S1/S2 m20.80/0.53
Lower coil inlet S1i, mm Rp3/4” 645
Lower coil outlet S1o, mm Rp3/4” 250
Upper coil inlet S2i, mm Rp3/4” 1025
Upper coil outlet S2o, mm Rp3/4” 725
Recirculaon R, mm Rp3/4” 877
Prolonged power acc. to DIN 4708;
80°C/60°C/45°C, S1/S2
kW (m3/h) 15(0.37) / 9(0.22)
NL – power coecient at 60°C, S1/S2 NL 60°C 1.5 / 1.3
Pressure drop Δp, S1/S2 Δp, mbar 60 / 25
Inspecon opening/Flange O, O1,
Ø, mm
132/90
Anode P1, P2
/
Thermostat T

Wall prop/ Distance
between both stands
X1, mm 900

20
INSTALLATION and OPERATION MANUAL
INSTALLATION and OPERATION MANUAL
18. WATER HEATER BB NL2 PRL - 150 L, 200 L.
With two parallel coils. Vertical models.
Sensor
Sensor
Sensor
Cold water inlet 1/2’’
CAUTION!
Relief valve
Cold water inlet 3/4’’
CAUTION!
Relief valve
Hot water
outlet 1/2’’
Hot water
outlet 3/4’’
Anode
Coil inlet 3/4’’
Coil inlet 3/4’’
Coil
inlet 3/4’’
Coil
inlet 3/4’’
Coil
outlet 3/4’’
Coil
outlet 3/4’’
Recirculaton
El. heating
element
El. heating
element
Coil
outlet 3/4’’
Coil
outlet 3/4’’
Wall prop
Wall prop 32 mm
rigid PPU
Sensor
Sensor
Sensor
Anode
32 mm
rigid PPU
Anode
Anode
BB NL2 PRL 150 L
BB NL2 PRL 200 L