Converting the boiler to liquefied gas: how to correctly convert the unit and configure the automation

The gas boilers offered for sale are oriented and configured to process main gas. But what should owners of private houses do in this case, which are not connected to a natural gas supply system? After all, we need to live in normal civilized conditions with a functioning heating system now.

Everything is extremely simple - switching the boiler to liquefied gas will allow you to heat the house and heat sanitary water using a group of cylinders or a gas holder. To achieve this goal, your unit will have to be slightly altered and reconfigured to other fuel pressure parameters. We will tell you in detail how this work is done.

Navien Deluxe gas valve adjustment

To set the gas pressure of Navien boilers (Ace, Deluxe, Prime, Atmo), you will need a differential digital pressure gauge with a mm H2O scale.
A table with gas pressure values ​​for various Navien boiler models is given at the end

1.With the boiler turned off, attach a pressure gauge to the gas pressure control fitting on the burner

3. Set DIP switch 3 on the control board to the “ON” position, which will correspond to the minimum load.

4. Set the minimum gas pressure according to the table using the screw for setting the minimum pressure (Increase - counterclockwise, decrease - clockwise)

5. Set DIP switch 3 on the control board to the “OFF” position (Main state)

6.Set DIP switch 2 on the control board to the “ON” position, which corresponds to the maximum load

7. Set the maximum gas pressure in accordance with the table using the adjusting screw (Increase - counterclockwise, decrease - clockwise)

9. Disconnect the differential pressure gauge hose from the gas valve fitting

10. Set the DIP switch to the “OFF” position (Main state)

12 . Check the tightness of the gas valve (Fitting). If abnormal noises appear, you need to check the boiler for gas leaks.

The material was prepared by an employee of heating-mtsensk.rf - Warm Home.

Source

Common malfunctions and their solutions

Errors in the operation of the boiler are displayed by corresponding codes on the control panel.

Among them:

• E01. Boiler overheating. Occurs when the circulation pump fails, or less often when the coolant filter is dirty.
• E02. Coolant circulation error. Indicates the formation of leaks in the system or the boiler itself (connections).
• E03. No flame on the burner. This indicates either a failure of the ignition coils or a lack of gas in the system.
• E04. Parasitic flame. There is a gas leak or a spark jumps between the flame sensor and the ignition electrodes.
• E05, E06. Open circuit (short circuit) of the extract air (heating water) temperature sensor. Occurs when the contacts close, most often due to the presence of condensation or other moisture on the board with the sensor.
• E07. DHW heating sensor failure. It is necessary to check the contact or quality of connection of the sensor.
• E08. Short circuit of the DHW heating sensor. The sensor or the entire controller needs to be replaced.
• E09. Fan failure (failure). Check the contacts and, if necessary, replace the fan.
• E10. Malfunction of the smoke removal system. Usually occurs due to blockage of the chimney by ice from condensation.

NOTE! There are other error codes that appear when certain problems occur. A complete list can be found in the user manual for this device.

Design features of Navien gas boilers

Manufacturers of Navien produce devices of different capacities, floor-mounted, wall-mounted and with a hot water supply function. They can be connected both to a centralized line and to gas cylinders. The units have a modern appearance that allows them to fit into any home interior. Navien gas boilers are equipped with a safety group, which includes:

• modulating turbocharging;
• protection against coolant freezing;
• SMPS chip that protects against power surges;
• temperature sensor control panel, which allows you to adjust the operation of the unit to certain circumstances.

The most common model of Navien gas units is Deluxe, so let’s look at them in more detail.

What's included

The Navien boiler package includes:

• Primary and secondary heat exchangers.
• Expansion tank 8 l.
• Gas heating pad of closed or open type.
• Three-way valve with electric motor.
• Fan for organizing turbocharging.
• Circulation pump.
• A sensor system connected to a control board.
• Built-in voltage stabilizer.
• Remote control.
• Housing with external connecting pipes.

Depending on the model and series, some additional components may be present. Constant development and improvement of the design contributes to the complication of old and the emergence of new elements.

Setting up a Navien gas boiler

Next, we’ll look at how to set up a Navien Deluxe gas boiler with your own hands. Manipulations are carried out using a remote control with a built-in room temperature sensor.

Heating settings

To set the heating mode and set the coolant temperature, hold down the button with the image of a radiator until the same icon appears on the screen. If the “radiator” picture blinks, it means that the set coolant temperature is displayed on the screen. If the symbol does not flash, the actual water heating level is displayed.

Navien wall-mounted gas boilers - model range, pros and cons

How they work and what are the advantages of Navien Ace gas boilers

To set the desired temperature, use the “+” and “-” buttons with the “radiator” icon flashing. The possible range is from 40ºC to 80ºC. Once the temperature is set, it will be automatically saved. The “radiator” icon will blink for a few seconds, after which the actual temperature of the coolant will be displayed on the screen.

Heating with air temperature control

To set the desired air temperature in the room, you need to hold down the “radiator” button until the image “house with thermometer” appears on the screen. It means “Heating with room temperature control” mode.

When the “house with thermometer” symbol is flashing, the desired room temperature is displayed on the screen. When the icon is not flashing, the display shows the actual room temperature.

When the icon is flashing, using the “+” and “-” buttons, the desired level of heating in the room is set, adjustable in the range of 10-40ºC. The temperature is then automatically saved and the icon stops flashing.

Setting the hot water temperature

To set the hot water temperature, you need to hold down the “water tap” button until a similar flashing symbol appears in the right corner. You can then set the desired hot water temperature between 30ºC and 60ºC. The settings will be automatically saved and the “water tap” symbol will stop flashing.

Note! In the “Hot water priority” mode, the water heating temperature is regulated differently.

Now let’s look at how to configure the Navien Deluxe gas boiler in the “Hot water priority” mode. To activate it, hold down the “water tap” key until the “faucet and light” symbol appears on the screen. Now you can set the desired temperature using the “+” and “-” keys. While the DHW temperature is changing, the “water tap” icon should flash above the “tap and light” symbol.

The “Hot water priority” mode involves preparing a supply of water at a given temperature even if it is not in use. It allows you to supply heated water to the consumer a few seconds earlier.

Away Mode

The “Away” mode means the gas boiler operates only for preparing hot water. To switch the unit to this mode, you need to press the button that shows an arrow and a water tap. The “water tap” symbol that appears on the screen means that the “Away from Home” mode is set. The actual temperature in the room is displayed next to it.

Note! This mode is convenient for use in the warm season, when hot water supply is necessary, but there is no need for heating.

Setting the Timer mode

The “Timer” mode is necessary to set the time for stopping the operation of the gas boiler within the range from 0 to 12 hours. The unit will work for half an hour, turning off for the specified interval.

To set the “Timer” mode, hold down the “radiator” button until the “clock” symbol appears. When the icon is flashing, use the “+” and “-” keys to set the interval time. The set value is saved, the “clock” stops blinking, and the display shows the actual air temperature.

Navien presents a universal water heating system

Navien Ace gas boilers are not afraid of low pressure of gas and water, they are not afraid of voltage drops in the network. The operation of Navien gas boilers is characterized by a long service life and economical gas consumption. All Navien gas devices comply with the standards and regulations of the Russian Federation and have the appropriate certificates.

Frost protection system stability

If the room temperature drops, frost protection system is activated When the temperature of the heating water drops by more than 10 degrees Celsius, the circulation pump automatically starts, resulting in constant circulation of the coolant in the heating system. If the temperature of the heating water drops to 6 degrees Celsius, the burner is automatically turned on and the coolant warms up to 21 degrees Celsius.

Safety of operation during frequent power surges

According to the instructions, the voltage can fluctuate within ±30 percent due to the triggering of the Switched - Mode Power Supply (SMPS) protective chip on the microprocessor. At the same time the operation of the boiler does not stop , which prolongs its service life and prevents breakdowns.

Operating conditions for heating and hot water:

• provided there is low inlet pressure in the gas pipeline system, stable and safe operation of the Navien Ace gas boiler is possible at a gas pressure of four mbar (40 millimeters of water column);
• subject to low incoming water pressure in the water supply system - stable operation of the Navien Ace gas boiler is possible provided that the incoming water pressure drops to 0.3 bar, which allows this gas device to be used in homes where there is low water pressure in the water supply system, including where there are frequent pressure drops in the water supply system.

How to increase the time between starting and shutting down a gas boiler?

If there is a problem with frequent switching on and off (“clocking”) of a gas boiler, you can change the difference between starting and stopping the unit. This is possible using the Navien engineering menu:

1. Turn off the remote control and press two buttons “+” and “-” at the same time.
2. A number from 2 to 20 appears on the display. Usually 8 or 10.
3. Use the “+” and “-” keys to increase the delta value between start and shutdown.
4. After 5 seconds, the remote control goes out.
5. The boiler is turned off and then turned on again.

Now the gas unit will operate in a new mode.

Source

Setting the gas pressure of Navien boilers

To set the gas pressure of Navien boilers (Ace, Deluxe, Prime, Atmo), you will need a differential digital pressure gauge with a mm H2O scale. A table with gas pressure values ​​for various Navien boiler models is given at the end

1.With the boiler turned off, attach a pressure gauge to the gas pressure control fitting on the burner

3. Set DIP switch 3 on the control board to the “ON” position, which will correspond to the minimum load.

4. Set the minimum gas pressure according to the table using the screw for setting the minimum pressure (Increase - counterclockwise, decrease - clockwise)

5. Set DIP switch 3 on the control board to the “OFF” position (Main state)

6.Set DIP switch 2 on the control board to the “ON” position, which corresponds to the maximum load

7. Set the maximum gas pressure in accordance with the table using the adjusting screw (Increase - counterclockwise, decrease - clockwise)

9. Disconnect the differential pressure gauge hose from the gas valve fitting

. and without construction experience

My works for 2022.

How I set up the Navien boiler, hysteresis on the burner

The boiler heats up, life goes on, but something told me that everything is not so rosy, first of all, a mistake was found among many buyers of gas boilers, they all buy with a reserve of power “just in case,” well, I, like everyone else, I took it with a reserve, with a reserve for hot water supply and frosts, i.e. It turned out that in warm weather outside, the Navien boiler continues to cycle , which is very unfortunate for it, and can lead to breakdown, first of all, there may be a breakdown of the ignition system , since it constantly lights the boiler, and most often wears out, this is not for me I want to. As an inquisitive researcher, with a stopwatch in my hands, I studied the cycles of the boiler in different modes of its operation, in warm weather, in cold weather, and decided to test the capabilities of the boiler at work depending on the temperature in the room, for this I selected the room mode in the boiler settings.

At first everything was happy, the boiler obediently stood up, waiting for the set temperature to drop, but the joy was short-lived, cold was already creeping across the floor (the heat from the radiators, which cut off the cold air from my many windows, disappeared, and the house became not very comfortable, in the upper part the room where the remote control for the boiler, in which the temperature sensor is located, hung. It was in a warmer zone, we immediately understood that this was not suitable for us, at first there were thoughts of hanging the remote control down, closer to the floor, but, firstly, this is inconvenient for control, secondly, it can be ruined by domestic cats, thirdly, the boiler may not turn off at all, trying to catch up with the temperature below, when it is already hot in the middle part of the room in height.

The room temperature test did not pass and was not suitable for me, at the same time I remembered the person who connected the gas, who advised that the boiler should not be turned on in this mode.

Time passed, but the cycles did not give me peace, and one day it occurred to me, while regularly observing the boiler, that the hysteresis (delta) in the turn-on-switch-off segment of the gas boiler was probably too small, and I would like the boiler to drive the coolant longer to a higher level. low CO temperature, but it was unclear how to do this, I certainly know how to program, but programming languages ​​for this boiler are inappropriate, and I don’t have equipment to connect to the “brains” of the boiler, and one day, purely by chance, I came across one well-known forum for a person who knows how to do this, and with the help of only one remote control, by entering the engineering menu of the Navien boiler!

This is literally what needs to be done. to change the delta between boiler start-stop.

1. With the Navien boiler remote control turned off, press the + and – buttons for 5 seconds

2. The number 8 or 9 or 10 will appear on the remote control display (for me)

3. Again, use the + or – buttons to change the value (this is delta) in the range from 2 to 20 (I set it to 12)

4. We wait 5 seconds, after which the boiler remote control goes out

5. Turn off the boiler by removing the plug from the socket for at least 10 seconds

How does liquefied gas differ from natural gas?

As is known, the main gas composition is dominated by methane, whose lower calorific value is approximately 9 kW/m³. The substance is transported and burned exclusively in a gaseous state; the transition to the liquid phase occurs as a result of cooling to deep low temperatures.

LPG – liquefied hydrocarbon gases, used in boilers, water heaters and internal combustion engines of cars, are a homogeneous mixture of propane and butane. Let us list the properties of this fuel:

• calorific value - about 6.4 kW per 1 dm³ (liter);
• gas easily transforms into the liquid phase under pressure;
• LPG is transported and stored in the form of a liquid, pumped into standard cylinders or storage tanks;
• Before combustion, the fuel must evaporate; propane-butane is supplied to the boiler burner or internal combustion engine cylinders in a gaseous state;
• Over time, condensation accumulates at the bottom of the container, taking away the useful volume of the container.

Addition. A significant advantage of methane over LPG is its price - natural gas is significantly cheaper. Even the higher calorific value and lower propane consumption do not cover the difference in cost. A more detailed comparison of different types of fuel is presented in a separate review.

When refueling with liquefied fuel, the container is never filled to the top. 1/5 of the tank (20%) must remain empty - this volume is used to transfer the fuel into the gas phase. If the vessel is filled to capacity, the evaporation area and the amount of LPG ready for combustion will sharply decrease. A standard 50 liter cylinder can be filled with a maximum of 40 liters of propane.

Features of the Navien gas boiler

Navien produces devices of various capacities designed to provide heating for gas-fired homes. However, the technical features of the models allow them to be converted to an autonomous gas supply, that is, connected to cylinders.

A wide range of models allows you to choose a model to suit any needs and capabilities.

• wall and floor;
• single-circuit and with hot water supply;
• with atmospheric and closed combustion chamber;
• with different heating outlet sizes (three options: 20, 25, 32);
• with different chimney diameters;
• and of course, the models differ in power and size.

The manufacturer did not neglect the design.

The devices have an elegant appearance and fit well into a kitchen or any other interior.

Security systems supplied with Navien boilers:

• Modulated turbocharging.
• Protection against coolant freezing.
• A special chip (SMPS) protects against 30% power surges.
• A control panel with a temperature sensor that allows you to maintain t constant and adjust the operation of the boiler to special circumstances.

Modulated turbocharging. The system is based on the interaction of a fan supplying combustion air and a pressure sensor (APS).

The fan rotation intensity changes in proportion to how much gas is supplied at the moment. This allows you to use resources economically and increase efficiency without wasting fuel.

Owners take the choice of equipment such as a gas boiler seriously. Read information about the Baxi gas boiler, the manufacturer, as well as the unit models on our website.

Read about the purpose of an air valve for heating here. Operating principle and design features.

And in this topic https://microklimat.pro/sistemy-otopleniya/elektricheskoe-dachnogo-doma.html we will consider options for electric heating of a private house. Types of electric heaters and electric boilers.

Specifications

Unexpected rise and fall in pressure: causes and solutions

It is not difficult to find out what pressure should be in a double-circuit boiler - this information is publicly available. But finding the reason for incorrect values ​​is more difficult. Let's look at a few common circumstances.

Increase in pressure in the system

There are many reasons for a sharp drop in pressure:

• due to the increase in coolant temperature, its volume has increased;
• the coolant has stopped moving along the circuit due to a system malfunction or for another reason;
• the system is clogged or an air lock has formed in it;
• you or someone else accidentally closed the valve;
• there were errors during installation;
• the boiler power is set too high or there is a pump malfunction.

Modern boilers are equipped with expansion tanks that neutralize the expansion of the coolant when heated. There are also safety valves that protect the circuit from damage due to high pressure or even water hammer. If you see that the pressure values ​​are close to critical, try to reduce the boiler power. If the situation does not return to normal, contact a specialist. He will see the problem and remove it.

Operating modes

Like many heating appliances, Navien boilers have winter and summer operating modes. On the display, the mode change button is indicated by the “Snowflake” and “Sun” icons.

By pressing this button again, you can change the options:

• Winter mode activates heating and hot water supply.
• Summer is only hot water supply for household needs.

You can adjust the coolant temperature on the remote control when the heating radiator icon lights up on the display.

In some models, to do this you need to press the “Heating Mode” button, in others you need to turn the knob with this icon.

A flashing radiator icon means that the numbers you see show the set temperature of the coolant.

If the “radiator” just lights up, the actual temperature in the heating is displayed.

Having selected “radiator”, you need to press the “+” or “-” keys to increase or decrease the temperature. A few seconds after the desired temperature is set, the radiator icon stops blinking, and the display will show what temperature the coolant is now, and the device will begin to gradually heat it (or cool it) to the selected one.

How to reduce the power of a gas boiler: ways to reduce

Hello, dear readers. Many owners are interested in how to reduce the power of a gas boiler? After all, it begins to consume a lot of fuel, strong noises and clicks appear in it. It feels like it might explode. To resolve the issue, there are general recommendations and points for certain brands and models.

A gas boiler is a necessary device in the house. It handles heating tasks and solves the hot water dilemma (if the model has two circuits). However, there are often cases when the power of the equipment goes off scale, which is fraught with significant waste of fuel and strong heating of the device. Therefore, the question arises of reducing these parameters.

Classic methods

To reduce the power of equipment, you need to apply these methods (one or both):

1. Burner power decreases. Parameters are achieved at which the automatic system sets the stable operation of the device with a connected heating system.
2. Increasing the maximum power parameters of the heating circuit. The process comes down to installing additional radiators or replacing existing ones with more powerful analogues.

Both options can be used. To do this, the difference between the power of the heating circuit and the device itself is reduced: radiators are changed or more powerful units are installed. The existing difference can be compensated by adjusting the power of the boiler itself.

Method No. 2 is less financially profitable, but if there is an urgent need, it is inevitable. Especially when there are radiators that do not have thermal power reserves.

And in cold weather, to maintain optimal temperature data in the room, it is necessary to send water with readings of more than 75 degrees to the radiators. In this situation, organic dust particles burn on the radiators, and a foul smell is formed in the room.

The boiler also has a negative impact - its polymer, plastic and rubber components deteriorate.

It is more effective to reduce the power of boilers of this brand by reducing the fuel supply to the burner. To do this, reconfigure the gas valve.

The Proterm Cheetah model is taken as an example.

A Honeywell valve is used here. Externally, it is a yellow connector with wires. It is mounted on a stepper motor, which helps change its settings.

The specified electric motor is controlled through the control panel: you need to go to the service menu. Access to it appears after entering the code.

The procedure is as follows:

1. Press and hold the “Mode” button for 6-7 seconds. The display will show the number 0.
2. Use the + or – buttons to enter the number 35. This is the code. Press the indicated button again.
3. When the first line of the menu with 0 signs appears on the screen, also using the + or – buttons, enter the number with the required line number: d.**.
4. Changing parameters. “Mode” is pressed again. This is a transition from line numbering ** to the indicators themselves. The “=” symbol and the power parameter are displayed in turn on the screen. Change the values ​​using + or -. After three seconds, the new setting is automatically confirmed.
5. Return the display to its original state: press “Mode” for three seconds. After 15 minutes the screen will return to functional mode.

Navien devices

To reduce the power of many Navien models, just use the remote control and visit the engineering menu.

1. The remote control is turned off. Press + and – for 5 seconds. This is how the regime is established.

1. The numbers displayed on the remote control panel are 8,9 or 10. They change to values ​​in the range 2 -20. Most often the figure is 12 or 13.
2. After 5 seconds the remote control goes out. The boiler is disconnected from the network for 10 seconds.

Baxi products

If you have a small apartment, then for optimal power of the Baxi boiler, the F08 and F10 indicators are set to a minimum.

The modulation interval of a 24 kW device starts at 40% of the maximum power. Then the minimum parameter for its operation is 9 kW. This is enough to heat an area of ​​up to 80 sq.m.

You can also connect a room thermostat to many models. The boiler will start only by its signal when the temperature in the room drops below the set values.

Thanks to programmable thermostats, you can flexibly adjust different modes throughout the day. Even if you reduce the indicator by 1 degree every day, you can save up to 4-5% of fuel per year.

Basic Concepts

First, let's look at the features of pressure and the main concepts.

• There are several units for measuring pressure: atmospheres, bars, megapascals.
• Even in a non-working unit there is pressure - it is called static.
• During boiler operation, all network elements are subject to dynamic pressure.
• The maximum permissible pressure is the last value after which a tragedy can occur.
• The internal boiler radiator is the most sensitive part of the system, especially susceptible to pressure surges. But batteries and pipes can fully withstand fairly high values, although almost everything depends on the material from which they are made, their “age” and other characteristics.

What pressure should be in a gas boiler depends greatly on the characteristics of the system itself - the number of batteries, the equipment used, materials, etc. If you have a one- or two-story private house, the operating pressure should not exceed 1.5-2 atmospheres. If the number of floors is more than 2, a higher value is allowed - up to 4 atmospheres. But in both cases, we recommend installing pressure gauges on each floor. This will allow you to take clear characteristics and, if necessary, take measures.

Precautionary measures

The room where the boiler is located must be well ventilated.

Gas cylinders, if used, should be stored in a separate cool room.

Do not dry things on gas heating pipes.

The power supply parameters must meet the requirements for the specific model (For example, 220V, 50 Hz).

The unit must be plugged into a separate outlet (other devices cannot be plugged into it); extension cords and adapters are not allowed.

Do not touch the body of the device with wet hands or plug it into the mains.

A working device must be in a protective housing.

You cannot install or repair gas equipment yourself - this is the work of government services. Once a year, these services will conduct a preventive inspection of the boiler.

If bubbles appear, immediately turn off the gas valve, provide air flow and call emergency services.

Tips and recommendations for operating the Navien boiler

The main advice from experts regarding the safe operation of the boiler:

1. The room where the unit is located must have good ventilation.
2. The unit must have a separate independent connection to the electrical network.
3. The boiler must operate in a fully assembled and protective housing.
4. The user is prohibited from independently repairing the gas equipment of the boiler.
5. The boiler must undergo an annual inspection by representatives of Gorgaz.
6. The boiler owner must periodically check the joints of the boiler and the gas pipeline for leaks with a soap solution.

Additional Information. If leaks occur, immediately turn off the gas valve, ventilate the room and call the emergency gas service.

Navien gas boilers have been used by Russian consumers for a long time. They have rightly earned the trust of customers. The lightweight layout with the widest range of modern water heating functions allows you to choose these models from a large list of offers on the heating equipment market.

Korean-made Navien heating boilers are popular in our country. They are reliable and at the same time affordable in price. Due to the great demand for these devices, setting up a Navien gas boiler is a pressing issue among buyers.

Conclusions and useful video on the topic

The following video will introduce you to the organization of heating using liquefied gas and the procedure for converting the boiler to its consumption:

The technical and technological essence of converting a boiler to consume a gas mixture in a liquefied state should be known to both independent home craftsmen and customers of gas service workers.

It should be remembered that the second option is preferable, since the gas is explosive, toxic and flammable. In addition, if third-party intervention occurs, the equipment warranty will be invalidated.

Filling the boiler and heating system with water

Error code 02 indicates that there was an attempt to start the boiler, but there is no water in the system, or there is not enough water. What to do:

1. The appliance is unplugged and the gas supply is cut off.
2. At the bottom of the boiler, among many elements, you need to find a make-up valve. Turning it counterclockwise opens it, and turning it clockwise closes it.
3. When the tap is open, monitor the pressure gauge. You need to close the tap when it shows 1.3 - 2 bar.
4. Now the boiler is connected again, gas is supplied and the start is made.

Don't worry if error 02 appears again. This may be caused by the fact that after bleeding the air (which is automatically done at startup), the water level is again insufficient. The filling operation must be repeated.

Starting the boiler

After all installation work has been completed and pressure testing has been carried out, the first commissioning start-up of the boiler equipment is carried out. All work is carried out by service center workers with the preparation of appropriate documents, which in the future will preserve the manufacturer’s warranty obligations.

When starting the Navien boiler, the instructions must be followed impeccably. Sequence of work:

1. The circuits are filled with water through the unit’s make-up unit, built into the structure, with a special tap at the bottom next to the tap water inlet.
2. Monitor the pressure gauge; when the pressure rises to 2.0 atm, close the tap.
3. Remove air pockets. At the first start, it is performed in manual mode, and at subsequent starts, through an automatic system. They start the process from the most distant battery, opening the Mayevsky tap, and alternately go through all the points of the heating circuit.
4. After etching the air plug, the pressure in the circuit will drop, so re-filling will be required.
5. Discharge the air mixture from the circulation pump.
6. To turn on the unit, press the “Power” button.
7. The electric ignition will work and the unit will start, after which it is necessary to adjust the temperature regime.

How to increase the time between starting and shutting down a gas boiler?

If there is a problem with frequent switching on and off (“clocking”) of a gas boiler, you can change the difference between starting and stopping the unit. This is possible using the Navien engineering menu:

1. Turn off the remote control and press two buttons “+” and “-” at the same time.
2. A number from 2 to 20 appears on the display. Usually 8 or 10.
3. Use the “+” and “-” keys to increase the delta value between start and shutdown.
4. After 5 seconds, the remote control goes out.
5. The boiler is turned off and then turned on again.

Now the gas unit will operate in a new mode.

Draining water from the boiler and hot water supply system

If the boiler is not planned to be used for a long time (especially in winter), it is recommended to drain all water from the heating and hot water circuits. What to do:

1. The unit is de-energized and the gas valve is closed.
2. The valves of the heating system (2 pieces) and cold water are closed.
3. The tap that is usually used opens (above the sink, for example) and drains hot water from the system.
4. The tap in the DHW system is closed.
5. A plug is opened at the bottom of the housing and water from the heating is drained.

Cleaning the heating water filter

Filters collect all the impurities contained in the water.

They need to be cleaned periodically, for this:

1. Drain the water (see previous paragraph).
2. Wait until the equipment cools down completely.
3. There is a filter located not far from the drain plug. To remove it, first remove the mounting bracket, then pull out the filter itself.
4. It must be rinsed under pressure with clean water.
5. Then reassemble in reverse order.

If the filters are not cleaned in time, the boiler will overheat.