Weller gas boiler service manual. Is it worth it to take a heating gas boiler Weller (Weller). Checks before starting work

All work described in this document must be carried out by qualified technicians.
authorized WELLER service centers. store technical documentation at hand. For execution
described works may require the information contained in this manual.
2. Description of the device.
2.1. general description devices.
Double-circuit wall-mounted gas boiler WELLER MARS with a closed combustion chamber and a separate
plate heat exchanger designed for heating and hot water supply. Boilers supplied
power of 24 and 30 kW. Appliances in standard equipment operate on natural gas (G20).
2.2. Main technical specifications
Model
Mars 26
Mars 32
Unit rev.
Rated heat input 26
32
kW
Rated thermal power 24
29,5
kW
Heating system temperature range 30～80 30～80 °C
Operating pressure heating systems 0.5～1.5 0.5～1.5
bar
Maximum pressure of the heating system 3 3
bar
Capacity expansion tank 6
8
l
Set pressure expansion tank 1
1 bar
Temperature control hot water 30～60 30～60 °C
Max pressure tap water 6 6 bar
Minimum pressure tap water 0.2 0.2
bar
△t=25°C, hot water supply possible
13
15
l/min
△t=35°C, hot water supply 9.5 10.7
l/min
Voltage/Frequency 220～230/50 220～230/50
V/Hz
Maximum power consumption 110
150
Tue
Insulation class I
I

compound
Connecting water pipes for heating
G3/4 G3/4
Trubnoye
Gas inlet
G3/4 G3/4
Connecting shower water pipes
G1/2 G1/2

Air inlet/outlet
60/100 60/100 mm
Rated pressure for natural gas 0,02 0,02
bar
Nominal pressure for LPG 0.03
0,03
bar
Net weight 38.5
39
kg
dimensions: L×W×H 740×410×328
740×410×328
mm

3

2.3. Design

Rice. 2.1.

Rice. 2.2.

Rice. 2.3.

6

Rice. 2.4.

7
2.4. Specification
No. p / p
Name
Qty
1
Left bracket 1
2
Phillips screw 8
3
Hanging bar for fixing the boiler to the wall 1
4
Top bracket 1
5
Expansion tank top bracket 1
6
Expansion tank 1
7
Right bracket 1
8
Side bracket 2
9
Burner
1
10
Ignition and ionization electrode 1
11
Sealing ring for gas inlet pipe 6
12
Gas supply pipe to burner 1
13
gas valve 1
14
Right hook
1
15
Rivet
4
16
Left hook
1
17
casing
1
18
Rating plate
1
19
Screw
2
20
Dust cap 3/4" 3
21
Safety label
1
22
screw
2
23
Screw for fastening the casing 2
24
Washer
2
25
Phillips screw 2
26
Protective gasket for power wires 1
27
bottom tray
1
28
Expansion tank bottom bracket 1
29
Connection nut with expansion tank 1
30
Outlet pipe of heating system 1
31
Main heat exchanger 1
32
Control temperature limiter 1
33
Phillips screw 2
34
inlet pipe heating systems 1
35
Nut 3/4" 2
36
Outlet pipe from pump 1
37
Rubber ring in/out Pump 2
38
Washer for water pressure gauge 1
39
Water pressure gauge 1
40
Water outlet clamp for water pump 1
41
Water pump 1
42
Clamp for pump water inlet pipe
1
43
Washer for pump mounting
2
44
Phillips screw
2
45
Washer
2
46
Phillips screw
2
47
Water inlet valve
1
48
flow sensor
1

2017-07-11 Evgeny Fomenko

The device and principle of operation of Weller boilers

Double-circuit hinged gas Weller boilers designed for space heating up to 240 square meters. The maximum heat transfer, when operating at any power, allows the use of a modulating burner - the main advantage of the design of these boilers. Combustion chamber in appliances closed type, in addition, there is an additional condensing module, which also collects heat from the exhaust gases.

Human participation is not required during control, since all settings are performed automatically. Wall mounted boilers Weller Mars is connected to the classical vertical chimney, and the removal of combustion products and intake fresh air going on by force through a coaxial chimney.

In order to increase the performance of this brand, all its models are supplied with components from leading European companies - Wilo, SWEP, FUGAS, etc. In the event that the automation of the device detects a malfunction, an appropriate signal is given to the display, where error codes are displayed.

All units are equipped with separate heat exchangers, and the control unit in automatic mode controls in pipeline required pressure and sets best option work, at which gas consumption will be minimal. During operation, it is necessary to study any Weller gas boiler. Errors that appear on the screen will help you identify the problem in time and quickly solve it.

Basic error codes

e1

Error e1 - insufficient water pressure or no water in circulation system. The valve body is faulty - the stem may jam. Faulty flow sensor microswitch. When the electricity is off, in accordance with the instructions, turn on the water again. Raise the pressure to 1-1.2 bar and turn on the heating.

Boiler hydroblock Weller

e2

Error e2 - protection against overheating or faulty ignition has tripped. The boiler enters this mode at a water temperature of +95 degrees, or due to a faulty ignition. Check gas supply. Press "reset" and start the device again.

e5

Code e5 - software malfunction. Press the "reset" button or restart the device. If this does not help, call a specialist.

e6

Error e6 - sensor heating system out of order. The boiler has entered protection mode due to incorrect operation sensor. Switch off the device and replace the corresponding element. If necessary, invite a specialist.

e7

Code e7 - increase in coolant temperature. The protective mode is activated when the system temperature rises quickly to 95 degrees, as well as when the DHW rises to 80 degrees. Disconnect from the power, and when the indicator drops by 6 degrees less than the set value, start it with the "reset" button.

e9

Error e9 - triggered by a malfunction signal from the DHW sensor. Due to not normal operation sensor, the boiler has entered protection mode. Disconnect power and replace sensor. Or call a specialist.

DHW flow sensor

Other malfunctions

Sometimes during the operation of Weller boilers, the device suddenly starts to drop the temperature in the heating system. 10 or even 20 degrees. It may even turn off completely. At the same time, it is connected to electrical network through the stabilizer.

In such a situation, it is the stabilizer that should be checked. Quite often, such devices fail unnoticed by the eye, and the problem is detected only when a breakdown of the consumers connected to them is detected. It is recommended to use a voltage stabilizer when connecting gas boilers.

WALL-MOUNTED DOUBLE-CIRCUIT GAS BOILER WITH A CLOSED COMBUSTION CHAMBER
USER'S MANUAL
WELLER
Mars 26

Content

Construction and designation of parts 3
Inputs/outputs 3
4
Safety notes 5
6
Control Panel Instructions 7
Description of fault codes 7
Unpacking box 8
Packing list 8
Installation illustrations 9
Boiler installation 9
Description of connecting elements 11
Water supply, replenishment and draining 13
Ignition adjustment 14
User operation 14
Security system 16
Maintenance 17
Warranty 18
Warranty card 19

Design and name of parts

1

. Fan

2. Main heat exchanger

3. Control temperature limiter

4. Ignition/flame ionization electrode

5. Burner

6. Flow sensor

7. Gas valve

8. DHW temperature sensor

9. Three way valve

10. Pressure sensor microswitch

three-way valve

11. Heating circuit temperature sensor

12. Fan operation sensor

13. Expansion tank

14. Automatic release valve

1

5. Safety valve

16. Secondary heat exchanger

17. Water pump

18. Water pressure gauge

19. Control panel display board

20. Control panel board

Inputs/outputs

A water outlet for heating

C hot water outlet

G gas inlet

F input cold water

R water inlet for heating
Main specifications

Digital display of the temperature of the heating circuit / DHW
Function automatic detection faults and fault code indication
Proportional continuous flame adjustment, the flame is adjusted according to changes in heat input to perform automatic regulation in order to ensure a constant heating/hot water temperature.
In the event of a flame failure, a flame failure protection is triggered, which immediately turns off the gas supply.
The boiler has two independent heat exchangers for heating and hot water.
Temperature limited protection. Prevents damage to the boiler when the temperature rises too high.
With a sharp increase in pressure in the heating system, an automatic bypass valve protects the heat exchanger from overheating.
Protection with safety valve 3 bar (1 bar = 1 kgf / cm 2 = 0.1 MPa), protects the system pipeline from overpressure.
If there is no draft in the chimney, the pressure switch automatically turns off the boiler.
The water pressure switch ensures that the boiler does not start up in the absence of water or its insufficient pressure.
Three minute delay function. It is used to prevent frequent starts of the boiler and increase its service life.
Protection against blocking the circulation pump: The system automatically turns on the pump once a day for 1 min.

Security Notes

▲ The boiler is intended only for heating water for heating and DHW systems.

▲ If the boiler does not work, turn off the gas supply and power supply. Contact an authorized service technician.

▲ The power supply required for normal operation of the boiler is AC 220～230W/50Hz. The manufacturer and seller is not responsible for damage caused by using a different power source.

▲ In frosty weather, the boiler must be supplied with electricity and gas to prevent freezing of water and blocking of pipes.

▲ Check that the water pressure in the heating system is at least 0.5 bar, or add water to the boiler according to the method used.

▲ Check that the type of gas used matches the type of gas indicated on the nameplate of the gas boiler.

▲ If the boiler is not used for a long period of time, turn off the gas supply, turn off the power supply and drain the water from the boiler and pipelines.

▲ Turn off the power supply before cleaning the boiler.

▲ Do not use electrical equipment if you smell gas. Immediately open the window and close the gas valve, and then call a service technician by telephone.

▲ Do not use near gas cylinders, gas and other flammable materials. Do not place combustible materials such as plastic, paper or cloth on the gas boiler.

▲ Do not pull, twist, or cut the power cable.

▲ Do not place foreign objects on the exhaust air outlet or air inlet to avoid clogging or fire.

Main technical parameters

Model		Mars 26	Mars 32	Unit rev.
Rated heat input		26	32	kW
Rated heat output		24	29,5	kW
Heating system temperature range		30～80	30～80	°C
Working pressure of the heating system		0.5～1.5	0.5～1.5	bar
Maximum pressure of the heating system		3	3	bar
Expansion tank capacity		6	8	l
Expansion tank set pressure		1	1	bar
Hot water temperature control		30～60	30～60	°C
Maximum tap water pressure		6	6	bar
Minimum tap water pressure		0,2	0,2	bar
△t=25°C, hot water supply possible		13	15	l/min
△t=35°C, possibility of hot water production		9,5	10,7	l/min
Voltage/Frequency		220～230/50	220～230/50	V/Hz
Maximum power consumption		110	150	Tue
Insulation class		I	I
Pipe connection	Connecting water pipes for heating	G3/4	G3/4
	Gas inlet	G3/4	G3/4
	Connecting shower water pipes	G1/2	G1/2
	Air inlet/outlet	60/100	60/100	mm
Nominal pressure for natural gas		0,02	0,02	bar
Nominal pressure for LPG		0,03	0,03	bar
Net weight		38,5	39	kg
Dimensions: L×W×H		740×410×328	740×410×328	mm

Control Panel Instructions

1	display	Shows temperature and all kinds of codes.
2	Increasing the water temperature for the heating system
3	Reducing the water temperature for the heating system
4	Increasing the DHW temperature	Press once, the set temperature will increase by 1 degree.
5	Decreasing the DHW temperature	Press once, the set temperature value will decrease by 1 degree.
6	Winter/summer switch	Selects the operating mode of the boiler
7	Reset	Locked out automatically, restart the boiler
8	On off	Starting and stopping the boiler
9	Water pressure gauge	Shows the water pressure in the heating system

Description of fault codes

Unpacking the box

The boiler is packed in a rigid box, and cushioning foam is placed in the box to ensure the safety of the product and the absence of damage during transportation. To remove the boiler from the box, proceed according to the following figures:

1. First cut the strapping of the packing box (Fig. 1)

2. Unfold the box as shown in Figure 2.

3. Separately take out the foam and packing tools; do not damage the fixtures (Fig. 3)

4. Take the kettle and remove the bottom foam pad (Fig. 4)

▲ ^ Attention: Do not take the plastic control box by hand when unpacking the stake.
Packing list

Open the box and check the accessories against the following list:

Installation illustrations

Boiler installation

Installation Safety Precautions

Installation, maintenance, installation, repair and instruction of the owner must be carried out by a specialist from the operating organization. gas facilities or a specialist of an organization licensed to this species activities.
Fasten the boiler securely to a wall made of non-combustible material.
Do not place combustible or explosive materials near the boiler.
It is forbidden to install the boiler on other gas devices.
It is forbidden to install the boiler in the bedroom, living room and basement.
It is forbidden to install the boiler near stairs and emergency exit (minimum distance 5 meters).
There must be no wires above the installation site of the boiler, electrical devices and gas pipes.
The outlet of the boiler must be near the ventilation.
You should use a special socket which must be grounded.
It is necessary to maintain the supply voltage within 220V ~ 230V, for this it is recommended to install a voltage stabilizer.
The boiler is installed in a vertical position.
Install drain tap in the lowest position of the heating system.
Install a filter on the return pipe heating water.
Be sure to flush the pipes or add an anti-scale agent when entering water into the heating system.
Thoroughly flush the entire heating system.
All pipes must be connected tightly to avoid leaks and other undesirable phenomena in the pipeline.
When it is necessary to carry out work on the boiler, do not put foreign objects into it in order to avoid disturbing the normal operation of the boiler.

Mounting plate installation

D

for installation and more convenient Maintenance suspension panel is used. Before installing the boiler, first use hanging panel to determine the mounting position, and then drill two holes at the selected position. Extend the expansion bolt on the wall to secure the panel. Finally, adjust the level and height between the panel and the floor, which must be at least 1.95 m.
^ Drilling holes for the flue
P

After installing the panel, drill holes in the wall for the flue according to the figure. Hole diameter 110 mm, the outlet part of the pipe must have a slope of 3% at least to allow the condensation water to flow out.

^ Suspension of the boiler

Fasten the boiler to the panel and make sure it is securely installed.

(As shown in the picture on the right).
▲ Note: The following must be provided around the boiler

minimum free space.

^ To side surfaces not less than 200 mm;

Before upper surface not less than 450 mm;

To the bottom surface at least 300 mm;

To the front surface at least 500 mm.

^ Gas flue installation
restrictive air ring

When installing any models, whether or not a restrictive air ring is installed, refer to the following table.

When installing a flue maximum length pipes cannot exceed 3 meters. When adding a 135° elbow, the pipe length will be reduced by 0.5 m, when adding a 90° elbow, the pipe length will be reduced by 1 m. Do not install two parts of the 90° elbow (except for the elbow between the flue and the outlet).

Attention:

1. The flue must be sealed. The pipe material must be resistant to deformation, heat and must prevent fire and condensation.

^ 2. The flue connection must be airtight. The sealing material must be resistant to heat and corrosion.

3. The flue should slope 2~3 degrees behind the wall to allow condensation water to flow out.

^ 4. Do not use a material that promotes condensation to fill the space between the pipe and the hole. The pipe should be easy to remove.

5. The pipe must be connected from the outside. It is forbidden to start the boiler without a pipe installed.

6

. See the figure below for the distances between the pipe outlet and the surrounding walls.

mm

Pipe connection

^ Gas pipe connection

A gas valve must be installed at the connection between the flue pipe and the gas inlet.

The flue must be clean. If there are impurities in the gas, a filter should be installed at the gas inlet.

The flue must not be used as an equipment ground line.

1

. heating water inlet

2. hot water outlet

3. cold water inlet

4. circulating heating water

5. gas inlet

Wiring diagram

Water supply, replenishment and draining
Water supply

Fully unscrew the automatic release valve of the faucet.
Open the heating system valve and the outlet valve at the end of the equipment.
Insert the protective plug and turn on the power, then start the boiler (it is forbidden to open the gas switch).
Run the boiler again and again for repeated starts of the circulation pump in order to remove residual air.
The water pressure in the heating system will decrease after the air is released .
Close the boiler and turn off the power.
Close the outlet valve at the end of the heating system equipment.

Replenishment

E If, after the boiler has been operating for some time, the water pressure in the heating system has decreased due to the filling of the pipe system, in order to prevent abnormal operation of the boiler due to low pressure water, water should be added to the boiler when the pressure falls below 0.5 bar.

Make sure the outlet valve on the pump is open.
Turn the handle counterclockwise to open the water supply valve.
Check the pressure on the water pressure gauge on the control panel. When the reading reaches 1-1.2 bar, close the water supply valve by turning it clockwise.
Z
water
refill valve
Run the boiler again and again to restart the circulation pump to remove residual air.
D
safety valve reducer
The water pressure in the heating system will decrease after the air has been vented . Repeat steps (3), (4), (5) until the pressure is between 1-1.2 bar.

System dehumidification

Dehumidification of the heating system

Switch off the boiler and disconnect the power supply.
Open the boiler and all valves on the heating system piping.
Open the drain cock and let the water out of the system, then close the drain cock.

Dehumidification of the DHW system

Disconnect the water inlet pipe from the boiler.
Open the heating water pipe valve and let the water out.

Attention:

When draining the system, it is necessary to close the boiler and turn off the power supply.

^ The safety valve drain must be connected directly to drainage system, it is not allowed to install valves in the middle of the connecting pipe.

After draining and supplying water, it is necessary to close the drain valve and the water supply valve.
^ Ignition adjustment

Checks before starting work

Check all heating and hot water connections to make sure there are no water leaks.
Check if the automatic outlet valve of the boiler is open.
Make sure that the heating system pressure is between 1-1.2 bar.
Make sure the gas you are using matches the gas listed on the nameplate.

Adjustment

▲ ^ Attention: (1) Adjustment must be performed by qualified personnel.

(2) If there are problems with heating and water quality caused by the heating system and DHW, please contact the authorized service center.

User operation

in winter

Heating operation

▲ Attention: Heating water outlet temperature can be set within 30~80°C. If you have chosen low temperature floor heating, the adjustment must be carried out by qualified authorized personnel. service center. Heating water outlet temperature can be set within 30~55°C.
^ Switching on DHW heating

After setting the temperature, this setting will be saved automatically. The display will return to showing the current water temperature of the heating system and the boiler will operate in winter heating mode.

Open the tap, the boiler will automatically switch from heating mode to DHW heating mode. When the boiler is in shower water heating mode, close the tap and the boiler will switch from DHW heating to heating mode.

Summer mode (Shower water heating function only)

After setting the temperature, this setting will be saved automatically. The display will return to showing the current water temperature of the heating system, and the boiler will work in summer mode heating
Open the tap, the boiler will turn on and work in DHW mode. Close the tap, the boiler will close and go into standby mode.

▲ ^ Attention: (1) If the unit stops working for a short time, you should check the normal power supply to prevent the fan from stopping.

(2) Make sure that the power supply and gas supply are normal in order to ensure the defrosting function in cold weather.

(3) When stopping the unit for a long time, close the gas pipe valve, turn off the power, and drain the water from the system.

Security system

The boiler uses a protection code display system. If the boiler goes into protection mode, determine the fault according to the following codes:

^ Insufficient water protection

E 1

When the display shows the code shown in the figure on the right, this means that the boiler is entering protection mode due to insufficient water. Turn off the boiler and then turn on the water according to the water supply method described on page 6. When the water pressure reaches 1-1.2 bar, try to turn on the power again and start the boiler.

^ Ignition failure protection or overheating protection

E 2

When the display shows the code shown in the figure on the right, this means that the boiler enters the ignition failure protection mode or the temperature of the heating system water rises quickly and reaches 95°C. Check if gas is supplied and if the gas pipe valve is open. Try to turn on the power again and press the "○" button, then press the "reset" button to ensure that the boiler operates in normal gas supply mode.

^ Heating system sensor failure protection

E 3

due to abnormal operation of the water sensor of the heating system. Turn off the boiler first, and then contact qualified personnel authorized by our company.
DHW sensor failure protection

When the display shows the code shown in the figure on the right, this means that the boiler enters the protection mode and ^

E 4

due to abnormal operation of the G sensor

E 4

Sun. Turn off the boiler first, and then contact qualified personnel authorized by our company.

^ P

E 5

program error

When the display shows the code shown in the figure on the right, this means that a software error has occurred. You just need to press the "reset" button or restart the boiler. If the failure of the control board continues, contact qualified personnel authorized by our company.

^ Exhaust system failure protection

When the display shows the code shown in the figure on the right, this means that the boiler enters the protection mode and

E 6

due to abnormal operation of the exhaust system. This is a temporary situation. When the exhaust system is working properly, the boiler will start automatically. If the boiler does not start automatically, contact qualified personnel authorized by our company.
^ overheat protection

E 7

When the display shows the code shown in the figure on the right, this means that the boiler enters the protection mode caused by a rapid increase in the temperature of the heating system to 95 ° C or a rapid increase DHW temperature up to 80°С. When the temperature drops to a value 6°C lower than the set temperature, press the "reset" button to start the boiler.
Maintenance

Check tightness water pipes and replace the O-ring and easily damaged material.
The system pressure must be 1-1.2 bar, otherwise, supply water according to the water supply procedure described on page 6.
Check tightness gas pipes and replace the O-ring and easily damaged material.
Check burner and main heat exchanger. If necessary, clean the nozzles and remove oxides from the burner. Remove deposits from the main heat exchanger to prevent their effect on combustion and thermal efficiency.
Provide pressure for the expansion vessel up to 1 bar.
Check the exhaust pipe for blockage and clean it.
Check the operation of the water pump and fan.

Attention:

(1) When the boiler stops working due to a malfunction, check the water, electricity and gas supply. If everything is in order, but the boiler does not work normally, contact qualified specialists.

(2) In order to avoid accidents, users should not remove the boiler and carry out maintenance on it. We are not responsible for accidents caused by opening the boiler without our permission.

(3) It is forbidden to use this boiler without the permission of a qualified person from an authorized service center.

Are Chinese heating boilers Is this a low-quality technique by default? The majority of buyers in the Russian Federation have a strong opinion that this is not without reason. But this stereotype can be destroyed by considering the technical characteristics that heating gas boilers weller.

The main difference between Weller brand products is undeniable quality, reliability and ease of use. One of the best proofs of the popularity of the model is that the company's thermal generators are popular not only in the Russian Federation, but also among more demanding European customers.

Chinese brand Weller

Weller was originally introduced as Italian manufacturer. Over time, products began to be produced in China. Today, Weller is owned by a Chinese company.

Surprisingly, the manufacturer managed to do what other concerns could not do - to save European quality and technical characteristics, making the cost of production lower and therefore more attractive to the consumer.

Produced models are focused on apartment heating of the house. The consumer is offered hinged models, double-circuit type with a closed combustion chamber.

Mounted boilers in demand on the market

If we turn to statistics, it becomes clear that for the average consumer, the most attractive choice is mounted models. heating equipment. The number of sales of units that can be hung on the wall significantly outstrips the sales of boilers that require installation on the floor. This is especially evident in the case of apartment owners. high-rise building wishing to make autonomous heating.

What explains the popularity of the boiler models presented by Weller?

Judging by customer reviews, the only weak point thermal station Weller is the vulnerability of the control unit to voltage drops in the network. You can ensure safety by installing a UPS.

General principles of installation and use

The manufacturer, developing this model, first of all focused on the production of a boiler that would be easy to install and maintain. As a result, installation does not require compliance with special conditions and the connection of additional equipment, it is carried out quickly enough.

Adjustment and adjustment of the boiler after installation is not required. The control unit automatically monitors the pressure in the pipeline and selects the best option for operation, such that the consumption of natural gas is minimal.

The operation of the Weller boiler depends on some factors that need to be taken into account before starting installation:

Compliance with the recommendations and requirements of the manufacturer. For example, a supply and exhaust adapter is installed in the smoke exhaust system, which monitors the presence of draft in the chimney. Violations during installation coaxial pipe lead to the failure of automation to turn on the boiler.
Electrical connection and installation of temperature sensors must be carried out by a qualified person.

Ease of use is achieved thanks to the system of "intelligent" control of the boiler. Installed controller independently makes decisions about changing the operating mode depending on external and internal factors, making the operation of the device as comfortable and cost-effective as possible.

Away with the prejudices that China is of poor quality

The example of Weller equipment proves that China is not always bad, and sometimes even very good. Full automation of the heating process, adaptation to domestic conditions, no need for self-adjustment pressure, smart automation - all these functions put the company's models on a par with European counterparts.

The boilers have been designed for apartment heating, can be installed in small spaces, without the need to use a separate boiler room for these purposes. A good choice for tenants of an apartment building!

Description: Boilers Weller Mars and Mars OC- double-circuit boilers with two separate heat exchangers provide heat

apartment or house up to 300 m2 and hot water for 2-3 draw points.

The security system monitors the flow of gas, the presence of a flame on the burner, overheating of the heat exchanger

mennik and the condition of the smoke ducts.

. Function of automatic detection of malfunctions and indication of a code of malfunction.

. In the event of a flame failure, a flame failure protection is triggered, which immediately turns off the gas supply.

. Temperature limited protection. Prevents damage to the boiler when the temperature rises too high.

In the event of a sudden increase in temperature in the heating system, an automatic bypass valve protects the heat exchanger from

overheating.

. Protection with a safety valve 3 bar (1 bar = 1 kgf / cm = 0.1 MPa) protects the pipeline of the system

we are from overpressure.

. If there is no draft in the chimney, the pressure switch automatically switches off the boiler.

. The water pressure switch ensures that the boiler does not start up in the absence of water or its insufficient

pressure.

. The three-minute delay function is used to prevent frequent boiler starts.

and increases its service life.

. Circulation pump blocking protection: (turns on automatically every 24 hours)

Design

. Open camera combustion - MARS OC, closed chamber combustion - MARS.

. Two independent heat exchangers for heating and hot water.

. For heating, the heat exchanger is copper, and for hot water it is plate

from stainless steel.

. Stainless steel burner.

. Gas pressure regulator.

. Built-in expansion tank.

. Air supply control system.

. 3 speed circulation pump with automatic air vent.

. Pressure gauge.

. Automatic bypass.

. Pump post circulation.

Automation system

. Automatic electronic ignition system and security systems.

. Smooth electronic ignition.

. Setting and maintaining accuracy temperature regime up to ±1 °С.

. The boiler has an electronic modulation of the flame in heating and hot water mode.

Characteristic
Rated heat input
Rated heat output
Heating system temperature range
Working pressure of the heating system
Maximum pressure of the heating system
Expansion tank capacity
Expansion tank set pressure
Hot water temperature control
Maximum tap water pressure
Minimum tap water pressure
Δt=25 °C, hot water supply possible
Δt=35 °C, hot water supply possible
Voltage/Frequency
Maximum power consumption
IP protection class
Pipe connection	Heating system

	DHW system

Nominal pressure for natural gas
Nominal pressure for LPG