Instructions for Geysers Baxi series SIG

Faults and solutions

Symptoms	What caused	Repair Methods
Piezo element does not work, there is no spark	power cable damaged	check cable integrity
piezo ignition failed	ignition block replacement
no earth connection	reconnect
electrode failed.	replace the electrode
The piezo element fires, but the main burner does not turn on	clogged nozzles	clean the burner
the electrode moved away from the burner	regulate the electrode
no gas supply	check the presence of gas in the cylinder, open the shut-off valve
air pipeline	bleed the air
The main burner spontaneously goes out	thermocouple failed	replacement
the induction coil is out of order	replacement
The wick works, but the pilot burner does not turn on	Insufficient water pressure	create normal pressure in the system turn the switch all the way to the right
water unit failed	change rubber seal
After turning off the DHW tap, the column continues to work	gas valve not working	clean
the stem due to accumulated rust wedges	remove the water unit, change the gasket, check the stem spring, clean
excessive gas pressure when working from cylinders	change the pressure regulator, adjust its throughput
After opening the DHW tap, the column does not work immediately	the wick is not close enough to the main burner	adjustable flame on the pilot burner
The heat exchanger is quickly covered with soot	insufficient flue gas circulation	check the draft in the chimney
flame color yellow	the proportions of the fuel-air mixture are regulated
increased gas costs
The smell of gas	loss of tightness of threaded connections of the gas supply pipeline	turn off the column, call the gas emergency service, ventilate the room
The smell of combustion products	clogged chimney	the condition of the chimney is checked, dirt is cleaned and debris is removed
excessive gas consumption	column regulate

Reviewer: Salavat Khusnutdinov

everything is done as it should, the build quality is completely satisfied. After installation, the column has been working for 3 years, with virtually no failures. During the use revealed one drawback and then associated with the installation of a water heater. The water inlet is made at an uncomfortable angle.

Reviewed by: Ilya Pogorelov

I think that the Baxi column is better than the promoted Bosch, Vaillant, etc. In terms of price and quality, I did not find such options. The column consistently produces 45-50 ° C even in the winter season, copes with several simultaneously operating points of water consumption. I am satisfied with the purchase.

How to install a Baksi gas boiler

• The installation room must comply with current building codes and regulations. Minimum requirements for the boiler room: ceiling height 2.2 m; area 12 m², the presence of a vent or an opening window.
• Mounting on supporting structures is prohibited.
• Installation and connection of a wall-mounted flow boiler is allowed only on walls made of solid and durable building materials. When installed on a wooden surface, heat-insulating protection is required to prevent fire.
• The piping of the Baxi gas water heater includes a scale prevention system and filters.
• The diameter of the chimney must not be reduced when connected. Vertical sections should not exceed 3 m. The height of the chimney is calculated depending on the distance from the roof ridge.
• When installing a floor-standing gas water heater, take into account that the weight of a filled tank can exceed 350 kg. Before installation, a solid concrete pad is prepared. It is allowed to cover the base with ceramic tiles.
• The case is exposed strictly on vertical and horizontal level.

Installation of a geyser - norms, requirements, SNiP

According to existing standards, the connection of gas-consuming equipment is carried out exclusively by specialists who have the appropriate license and permission to work. A mark of commissioning is placed in the dispenser passport.

Model range of Baxi boilers

Boilers Baxi of the PREMIER PLUS series

Parameters	PREMIER Plus 400	PREMIER Plus 500	PREMIER Plus 800	PREMIER Plus 1000	PREMIER Plus 1250	PREMIER Plus 1450	PREMIER Plus 2000	PREMIER Plus 2500
Volume	400l.	500l.	800l.	1000 l.	1250l.	1450 l.	2000l.	2500l.
Heat exchanger power	36 kW.	54 kW.	90 kW.	135 kW.
Heat exchanger area	2 m²	3 m²	5 m²	7.5 m²
Equipment weight kg Empty/Full	128/578	128/628	192/992	218/1218	314/1564	322/1822	500/2500	508/3008
Operating pressure	Working pressure no more than 6 Atm. Tests are carried out at a pressure of 20 atm.
Electric heating elements	Depending on the model, it is possible to install a heating element with a power from 12 to 162 kW.

• Stainless steel heat exchanger for long service life.
• Titanium coating - the protective layer is resistant to thermal and aggressive effects of hard water. In addition, the titanium layer provides antibacterial protection and fully complies with all sanitary standards and requirements, which makes it possible to use the storage device in children's and preschool institutions, in public catering establishments.
• Security system - the device has a safety valve, a temperature sensor. When using an electric heater, grounding is required.

Boilers of Baxi of the UB series

• UB 80 / UB 120 / UB 80 INOX / UB 120 INOX are designed for connection to single-circuit boilers operating on any type of fuel. A kit for connection to condensing heating equipment is supplied separately. In the UB series, the boilers are equipped with an enameled heat exchanger, in the INOX series they are made of stainless steel.
• SLIM UB 80 / SLIM UB 120 / SLIM UB 80 INOX / SLIM UB 120 INOX - this model range is specially designed for connection to boilers manufactured by the company in the SLIM series. In addition to the proposed boilers, a connection kit is supplied.

Specifications	UB INOX 80	UB INOX 120	SLIM UB 80	SLIM UB 120	SLIM UB INOX 80	SLIM UB INOX 120
Boiler capacity l	80	120	80	120	80	120
Max. heat exchanger power kW	33	33	28.5	33.7	33	33
Max. coil water pressure bar	3	3	3	3	3	3
Head loss in the coil m H₂O	1.5	1.9	1.52	1.94	1.5	1.9
Max. throughput in flow mode (ΔТ=25°С) l/min	18.9	18.9	16.3	19.3	18.9	18.9
Boiler water temperature control range °C	5–65*	5–65*	5–65	5–65	5–65*	5–65*
Water heating time in the boiler at ΔТ=50°С min	10	14	10	14	10	14
Max. DHW water pressure bar	8	8	6	6	8	8
Boiler water temperature controller	—	—			—	—
Built-in thermostat	—	—			—	—
Temperature sensor (NTC) included			—	—
Dimensions: height mm	850	850	850	850	850	850
width mm	450	600	450	600	450	600
depth mm	600	600	600	680	600	600
NET weight kg	50	62	60	72	50	62

Boilers Baxi series UBVT

• Protection of the internal surface of the tank from corrosion - provided by the installation of a magnesium anode and enameling with titanium, a material resistant to overheating and water quality.
• Possibility of recycling.
• Precise and simple control, with a thoughtful interface. All devices, starting from the temperature sensor and ending with the inspection control flange, are designed taking into account the safest operation of the boiler.

Pricing policy for boilers from Baxi

1. Boiler connection kit.
2. Control and shutoff valves.
3. Automation, subject to the connection of an electric heater.

	PREMIER Plus 100	PREMIER Plus 150	PREMIER Plus 200	PREMIER Plus 300
Recommended retail price (EURO)	899	959	1149	1369

	PREMIER Plus 400	PREMIER Plus 500	PREMIER Plus 570	PREMIER Plus 800	PREMIER Plus 1000	PREMIER Plus 1250	PREMIER Plus 1450	PREMIER Plus 2000	PREMIER Plus 2500
Recommended retail price (EURO)	3053	3344	3634	5930	6991	8852	9302	12276	12719

	UB80	UB 120	UB 80 INOX	UB 120 INOX	SLIM UB 80	SLIM UB 120	SLIM UB 80 INOX	SLIM UB 120 INOX
Recommended retail price (EURO)	836	928	1101	1234	866	928	1213	1325

	UBVT 200SC	UBVT 300SC	UBVT 400 SC	UB 1000 SC	UB2000SC
Recommended retail price (EURO)	922	1256	1331	2850	6115

	UBVT 200DC	UBVT 300 DC	UBVT 400 DC	UBVT 500 DC	UB 800 DC	UB 1000 DC	UB 1500 DC	UB2000DC
Recommended retail price (EURO)	1009	1365	1256	1659	2981	3401	5439	6339

	UBT 80 (GR)	UBT 100 (GR)	UBT 120 (GR)	UBT 160 (GR)	UBT 200 (GR)	UBT 300 (GR)	UBT 400	UBT 500	UBT 800	UBT 1000
Recommended retail price (EURO)	439	489	529	629	649	919	1040	1162	1682	1805

How to install a Baxi boiler correctly

• Connecting the Baxi boiler to the Baxi gas boiler is carried out strictly according to the diagram attached to the instruction manual. The installation of the heating element and its connection to the power supply network must be carried out by an electrician who has a permit to carry out such work.
• During installation, it is recommended to use the branded boiler connection kit for the Baxi boiler. The manufacturer produces control valves, separately for condensing and classic boilers. A separate kit is designed for connection to heating equipment manufactured by the company itself.
• The piping of the boiler and the Baksi boiler allows the connection of circulation and other equipment.In the tank there are specially marked outlets for connection to the supply and return pipelines of the heating system.

It is better that the connection of the indirect heating boiler of the Baxi brand is carried out by specialists, representatives of the manufacturer's company. After installation and performance check, the container is put on warranty service.

How to clean a Baxi boiler

1. The power wires are disconnected.
2. The flange with the electric heater is removed.
3. The inner container is washed out. You can use special solutions for cleaning.

transcript

1 Instantaneous gas water heaters series SIG BAXI - slide 1 BAXI - slide 1

2 Open chamber models SIG 13 i (13 liters of hot water per minute) SIG 11 i (11 liters of hot water per minute) Power selection knob Battery charge indicator Burner operation indicator Water temperature control knob Electronic ignition Flame modulation Maximum power selection: 50% or 100% Water temperature control Power supply by two batteries BAXI - slide 2 BAXI - slide 2

3 Models with closed chamber SIG 13 Fi (13 liters of hot water per minute) Power selection knob Lockout due to lack of gas or ignition failure Water temperature control knob - ON/OFF - Reset Burner operation indicator Electronic ignition Flame modulation Maximum power selection: 50 % or 100% Water temperature control Mains supply 220 V BAXI - slide 3 BAXI - slide 3

4 Hydraulic circuit PRIMARY HEAT EXCHANGER Made of pure electrolytic copper. To ensure high heat resistance, a special coating of aluminum and silicone is used. BAXI - slide 4 BAXI - slide 4

5 Gas-water unit The force of the water block on the gas valve is determined by the water flow. The gas valve, in turn, provides flame modulation. Flame modulation maintains the set temperature. BAXI - slide 5 BAXI - slide 5

6 Gas-water unit The flow sensor ensures that the dispenser operates only with sufficient water flow BAXI - slide 6 BAXI - slide 6

7 Complete safety control Ionization control of the presence of a flame on the burner Draft sensor (thermostat for models with an open chamber, pneumatic relay for models with a closed chamber) Overheating thermostat (operates at a temperature of 115 C) BAXI - slide 7 BAXI - slide 7

8 Accessories for air supply and exhaust of flue gases (for models with a closed chamber) The same accessories are used as for wall-mounted boilers BAXI BAXI - slide 8 BAXI - slide 8

9 How it works Temperature versus water flow curves for the SIG 11 i Minimum and maximum water flow to achieve a given temperature at a given power BAXI - slide 9 BAXI - slide 9

10 How it works Temperature versus water flow curves for SIG 13 i and SIG 13 Fi Minimum and maximum water flow to achieve a given temperature at a given power BAXI - slide 10 BAXI - slide 10

11 Schematic diagrams SIG 13 Fi SIG 11 i SIG 13 i 1 = Air blower switch 2 = Exhaust hood 3 = Heat exchanger 4 = Burner 5 = Pressure test point 6 = Burner output switch 7 = Hydraulic group 8 = Soft start adjusting screw 9 = Temperature controller 10 = Water flow regulator 11 = Flow sensor microswitch 12 = Cold water stopcock 13 = Ignition and flame control electrodes 14 = Overheating safety thermostat 15 = BAXI fan - slide 11 BAXI - slide 11

12 Overall and connecting dimensions BAXI - slide 12 BAXI - slide 12

13 Technical data BAXI - slide 13 BAXI - slide 13

Possible problems and their resolution

Even selected Italian speakers can have some technical problems. Troubleshooting directly depends on the type of equipment.

If there is no spark at SIG 2-11p, the causes may be related to:

• disconnected wire of the piezoelectric part;
• disruption of her own performance;
• poor connection of the piezoelectric element;
• electrode deformation.

A different approach is needed when column 11i, 14i does not light up. First of all, it is worth checking the health of the batteries. After that, inspect the wire through which the current flows to the electrode. Additionally, you will have to examine the electrode itself, automation, and the membrane. Such manipulations and subsequent repair (replacement) must be carried out by trained specialists.

The user himself can create the necessary water pressure by turning the regulator to the extreme position. It happens that a spark seems to be jumping, but it still fails to turn on the column. A very common cause is a dirty ignition nozzle, which is purged and cleaned mechanically. You should also check whether the electrode responsible for ignition is correctly positioned.

Additional measures include checking the opening of the gas valve, removing air that has entered the gas pipeline and replacing the problematic electronic unit. When the burner fuse randomly goes out, you will have to change either the thermocouple or the coil. Judging by customer reviews, it is sometimes found that the fuse is burning, but it does not initiate the burning of the main torch. The solution to the problem is to increase the pressure of water in the system or change the worn membrane. Sometimes there is another problem: even when the water is stopped, the burner does not go out.

In the case when the heat exchanger plates become clogged too quickly, it can be assumed that the reason is insufficient draft, the dustiness of the room. Examine the chimney and increase the draft level if necessary. You can fight the yellow flame if you use only the type of gas for which the column is configured. It also often helps to clean the burners.

The appearance of a gas odor means the need to inspect the gas pipeline and all joints with a soapy solution, following standard precautions.

It happens that the "aroma" of gaseous products of combustion spreads around the room. They begin to fix the problem by checking the draft in the chimney and the quality of the smoke removal. It is also worth evaluating whether the gas consumption has increased excessively, because its intensive combustion may exceed the evacuation capacity of the chimney. If, when a new battery is inserted, the column screen shows the readings of the temperature sensor, but the system does not work when the hot tap is opened, it is necessary to adjust the screw that presses the pusher button to the microswitch lever. Strict adherence to these recommendations will significantly extend the life of the column and get the most out of it.

For the main malfunctions of the Baxi ECO 4s gas boiler, see the following video.

The principle of operation of the Baxi boiler

• Magnesium anode is a unique technology that reduces the appearance of scale on the inner walls of the boiler. Installed next to the heating element.
• Built-in coil - hot water is heated as follows. Inside the case there is a coil placed in a metal flask. Water from the heating system is passed through the circuit. The coolant heats the water surrounding the coil to a comfortable 36-40°C.
• Water recycling - the disadvantage of all double-circuit boilers is that after opening the water supply tap, it takes a long time until hot water begins to flow to the consumer. To avoid this, install a recirculation system. The point is that hot water constantly circulates from the boiler to the water supply tap and back. The principle of operation of the Baksi indirect heating boiler is based on the use of constant recirculation, which provides instant hot water supply to the consumer.
• Additional heater to maintain the temperature - after the heating system is turned off in the summer or due to the burnout of the main type of fuel, the tubular heating element is turned on. The unit starts working like a normal electric boiler.
• The internal structure of the Baxi boiler is similar to that used in a conventional storage tank with an electric tubular heater, only the functions of the heating element are performed by a coil with water circulating through it from the heating system. The body is lined with insulating material. Thermal insulation thickness, depending on the chosen model, 50 or 100 mm. Insulation ensures that the maximum daily heat loss will not exceed 1-1.5°C.
• Volume - Baxi boilers are available with the possibility of wall and floor installation. Capacity of tanks, from 100 to 2500 liters. To facilitate the installation of the Baxi indirect heating boiler, special fasteners are offered in the kit.
• The design of the heat exchanger uses the principle of layer-by-layer heating of water. The special design ensures a rapid rise in water temperature. Almost immediately after opening the water supply tap, hot water is supplied to the consumer.

Modifications and alternatives

Before talking about the speakers themselves, you should pay attention to alternative proposals from the same concern. Accumulative water heaters of the Italian company are represented by the SAG3 model

These devices are suitable for both domestic and industrial sectors. According to the manufacturer, using them to replace obsolete heating equipment means ensuring a stable supply of large amounts of water.

The design difference is:

• open type of gas combustion chamber;
• piezoelectric ignition;
• autonomy from power supply;
• high-quality enamel on the walls of the storage tank, which reliably restrains corrosion;
• the possibility of installation both on the walls and on the floor;
• environmentally and sanitary-neutral thermal protection.

But there are situations when neither such equipment nor the outdated model of the Main 24 fi boiler suits consumers. In such a case, the Baxi geyser comes to the rescue, providing the flow of water in flow mode. The Italian company has developed a family of devices SIG-2 for this purpose. All of them are equipped with an open combustion chamber, but there is a certain difference. So, models 11i, 14i are equipped with an automatic ignition module, and the 11p version uses a piezoelectric spark method.

The 11i volatile modification receives electric current for gas ignition from an Lr20 format battery supplied with the dispenser. The system is equipped with a module that monitors the air ionization characteristic of a burning flame. If it goes out, the automation sends the appropriate commands to the working nodes. The 11i is capable of delivering a rated heating output of 22 kW and a supply of 11 liters of heated water per minute. For version 14i, these parameters are 29 kW, 14 liters of water.

Baxi automatic models are equipped on the facade with a liquid crystal display that shows:

• preset water temperature;
• its achieved level;
• conditional error codes.

As for the mechanical controls, two of them are brought to the body, respectively, setting the heating of the liquid and its pressure. Manual ignition on the 11p model is achieved through the use of a prepared piezo element and a control button inserted into the front panel. The advantage of a non-volatile design is its relative cheapness, which is also achieved by eliminating the digital screen. The system has a thermal rating of 22 kW and a water capacity of 11 liters in 60 seconds.

Automatic columns are equipped with:

• hydraulic valves;
• traction indicators;
• copper heat exchangers;
• devices that regulate water temperature;
• Setaak gas pressure indicators;
• economizers.

The copper heat exchanger is harmoniously docked with a hydraulic group made of high quality brass. The gas burners themselves are made from stainless steel grades. Any Baxi speaker is equipped with devices that provide smooth modulation of the assigned power. A reducer that controls gas pressure is also built into them.Automated models follow the fire with an ionization element, and piezoelectric ones are equipped with a thermocouple.

Geysers Baxi

• With piezo ignition - the letter “p” is present in the equipment marking. For the operation of the water heater, a constantly burning pilot wick is used. Semi-automatic speakers are cheaper, while the functionality is retained almost in full. The only drawback: the need for daily ignition of the pilot burner.

• Electronic ignition - speakers operate in fully automatic mode, are marked "i". They turn on and off when the DHW tap is opened / closed.

• copper heat exchanger;
• gas pressure reducer, without reconfiguration operates in the range of 13.5-20 mbar;
• modulating stainless steel burner.

Series	SIG-2 11 i / SIG-2 11 p	SIG-2 14 i / SIG-2 14 p
Maximum output in kW	19	23,7
Hot water consumption at ∆t=25⁰C (l/min)	10,9	13,6
washing dishes	Excellent performance	Excellent performance
Daily washing
Quick shower	good performance
Taking a bath	The average	good performance
Simultaneous operation of two taps
Simultaneous operation of three taps	—	The average

Differences	SIG-2 11 i / SIG-2 14 i (electronic ignition)	pros	SIG-2 11 p / SIG-2 14 p (piezo ignition)	pros
pilot burner	Works in automatic mode, turns off by itself	Gas saving	Pilot burner constantly on	Does not need a power supply
Speaker turns on automatically	Battery operated electric ignition	Economical fuel consumption	Consumes more gas required for wick operation	Not dependent on batteries
Flame sensors	Ionization system		Thermocouple is used, which eliminates the need for electronic components
DHW heating temperature is fixed	Indicators are displayed on the LCD display	Easily adjust the heating intensity and set the right temperature	—

The main advantage of flow columns is compactness. Small dimensions allow the use of a boiler to produce hot water in an apartment building.

Model	SIG-2 11p	SIG-2 14p	SIG-2 11i	SIG-2 14i
Max. thermal power (kW)	19	23,7	19	23,7
Min. thermal power (kW)	7,5
Max. consumed thermal power (kW)	21,8	27,2	21,8	27,2
Min. consumed thermal power (kW)	9
Max. consumption of natural / liquefied gas in heating mode m³/h (kg/h)	2,31 (1,72)	2,88 (2,14)	2,31 (1,72)	2,88 (2,14)
Max. Efficiency (%)	87
Efficiency at 30% power (%)	83
The combustion chamber	open
Ignition system	piezo ignition	electronic
DHW temperature control (°C)	35—60
DHW capacity at Δt=25°С (l/min)	10,9	13,6	10,9	13,6
DHW capacity at Δt=35°С (l/min)	7,8	9,7	7,8	9,7
Min. water flow in the DHW circuit (l/min)	2,5
Max/Min pressure in the DHW circuit (bar)	10 / 0,2
Chimney diameter (mm)	110	130	110	130
Nominal inlet pressure of natural gas (mbar)	13,5-20
Flue gas temperature (°C)	185	168	185	168
Overall dimensions, mm)	height	592	650	592	650
width	314	363	314	363
depth	245	245	245	245
NET / GROSS weight (kg)	10,6/12,6	12,1/14,5	11,1/13,1	12,6/15,1
Recommended price (€)	225	278	273	318