Gas Pressure Reducer Issue: Heating Furnace Error E01, Checking for Blocked Regulator

Good morning,

my heating furnace displays error E 01, which may mean that the gas supply is blocked. I would like to know how to check that the pressure regulator is not blocked. In the attachment his photos:

Measure the pressure downstream of the regulator maybe the regulator itself works correctly only the control contact of the signaling device has hung and thus an error code

I don't see any reducer here, only the pulse shut-off valve ZB. If there is a gas detector in the boiler room, it controls it. At first glance it is released because the mushroom is low. The gas is cut off. Pull the plug so that it protrudes above the connector plug. Of course, first find and remove the cause of the trip.

It seems that this could have happened when after a storm there was no electricity all day ... I will try to pull this mushroom away tomorrow.

Call the service for the detection system. The valve does not close on its own or due to a power failure (it is triggered by a series of pulses from the control panel). If the storm damaged the detection system, then you have a malfunction, you will not see it on the control panel (only the power will be lit).
In addition, you have the valve installed incorrectly because it practically touches the wall. There should be a gap (minimum 1cm, but it's better to give more). The pipe should also be at a distance from the gas pipe (here it is almost on it ). The same elbow immediately after the valve is also not indicated, nor do I see the manual shut-off valve (maybe it is somewhere earlier). The valve plug has specific connections and is fitted alongside as standard. Here someone mounted it across (acceptable). It is worth checking the correctness of the connection.
A thin cable (it is worth checking if it complies with the instructions) and you can see that the plug gland has not tightened properly, so the IP protection level is no longer maintained.
Installation to fix.

For this service probably never looked here because the factory seals intact.

Domelski's friend has a bit of trouble. I presume that the boiler has over 100Kw of power and is subject to UDT and the installation has been approved for operation and has been made in accordance with the project. Even the statement that there is a thin cable but at 12 V and 25 W for what more! When inspecting the boiler, the safety devices and the gas shut-off valve are checked, so it should be tested at least once a year / what the factory seals have to do with it. You don't look there / Lasek 311 sometimes there is '' transient states '' in the event of voltage decays, so turn on the valve and start the boiler. If there are problems, call a service technician.
call a service technician.

Quote:

Colleague Domelski has a bit of trouble. (...)
that there is a thin cable but for 12 V and 25 W what for more

Not at all. I have not buried.
The cables between the gas detection system control panel and the valve must comply with the installation instructions. There is simply no 12VDC, only a series of pulses. An incorrectly selected cable can cause incorrect installation operation and hazard. This is a critical parameter of the system.
If it is a GX GX system, the minimum wire cross-section is 1.5mm2 for distances up to 30m (instructions page 29 ). And that's why I pay attention because the one in the picture seems thin (about 0.75mm2) and it is worth checking it because then in the event of an accident there will be no translation.

Quote:

I presume that the boiler has over 100Kw of power and is subject to UDT and the installation has been approved for operation and was made in accordance with the design

What do you suppose? Safety systems in accordance with the regulations apply from 60kW. And UDT is not obliged to check the gas detection system.
Just releasing the electric wire with the gas pipe without keeping a gap is a mere partitioning.

Quote:

When inspecting the boiler, the safety devices and the gas shut-off valve are checked, so it should be tested at least once a year

According to the instructions, gas detection systems are checked every 3 months.

Quote:

what the factory seals have for this

Well, they have that no service has looked inside the valve.

Quote:

You don't look there

Congratulations on your approach. That's where you look. And only pseudo-services seem to just "click" the valve and everything checked.

Quote:

Cane 311 sometimes in the event of voltage decays there are '' transient states ''

In the event of a power outage, the switchboard rather does not send a series of pulses to the valve (but I do not prejudge because after the pictures we do not even know which system). Either there was a false alarm or a real alarm or a control panel failure. Either way it's worth checking out.

Sorry author with a light offtop.
My friend @Domelski . I have read your posts with great pleasure and although they do not concern me I find them very helpful. I will remember the information you provided.
However, I have a question: Why is the NC valve "dropped" just a series of pulses, and not NO supported when there is power and there is no danger?
Maybe I misunderstood something? Please explain. Very interesting topic.
Thank you in advance.

Quote:

Why is the NC valve "dropped" used just a series of pulses instead of NO supported when the power supply is on and there is no danger?

Good question. Actually, it's not even an NC valve. Unfortunately, I do not know the full genesis (producers do not want to admit everything). NCs are also sometimes used.

Some things are certain:
- the "dump" valve (safety valve) is safe on one side. The point is that someone must then manually "consciously" open it. So it is assumed that someone checked if the alarm was not real, eventually checked the installation and checked whether, for example, something was not left open, that after the installation the gas did not escape somewhere because someone did not close something (remember that these valves are not only to boiler rooms, but also to laboratories, industry, halls, etc.). The same model is in the pressure relief valves. If it closed, you have to open it manually. And to be honest such an opening should be saved somewhere and a person with permissions who has restarted the installation should sign somewhere (but that's my vision).
- NC or NO type valves have the disadvantage that after the change has ceased it returns to its previous state. So we have a leak, the detection system is alarming, the valve closes, the gas is thinning, the system stops alarming, the valve opens and leakage again. Such valves are also used (e.g. ZE Flamy or other Burket) but then there must be a latching system that can only be activated consciously after removing the fault (e.g. remotely from the factory dispatch center). I do not have to say that then the problem is the lack of power supply, which cannot cause the valve to open, i.e. rather NC valves are used (the NO valve in this momancie would be open in the event of a power failure, i.e. you have an alarm during which the system on the 4th threshold cuts off the power to the boiler room, thus opening the valve ). For this you need to remember that the coils of these valves must be adapted to long-term operation, and used in safety valves (e.g. MAG, ZB, SK, EVRM) coils are intended for short-term operation (close and forget).
- engine valves are also used (e.g. ZM for large cross-sections 150, 200 and above) where there is a controller and the valve closes a dozen to several dozen seconds and then opens it with the button.
- a series of pulses is to provide several attempts to close the valve. Often the valves are found (because they are only closed during technical inspections) and the first impulse may not move the stem sufficiently. Therefore, DO NOT control these valves with a simple relay simply giving voltage (because it may not work for the first time) and that's why you look inside them - not inside (not every inspection but every now and then). That is why inspections are every 3 months, so that move the valve in. Because then the system has only one chance to operate. There may also be an economical and rational aspect: in the NC valve for 24 hours a day you would hold the valve under voltage only so that in case of failure it closes for a short time.
- this type of valve (closed in this way) has no place in regulations and sometimes in some cases NC valves are also used, as I said, but these "safety valves" are used all over the world.

But I wrote ... If something is unclear or something does not agree, then shout.

On the website of the manufacturer of the Flama Gaz valve you can download the instructions for the stop valve ZB and on page 4 says that the maximum cable diameter is 1.5 mm2 / up to 30 m from the central unit /
and on p. 2 point 10 write that the shut-off valve does not require any other servicing except starting. The instructions do not indicate the time between valve checks. The plug at work is to be pulled out maximally and in emergency state the spring presses the plug. Unfortunately, we do not know what the trigger switch is and whether the gas sensor is calibrated. You can see that the gas pipe passes through the wall through the sleeve and the pipe outside the sleeve, so what else can you ask for, a pipe or pipe to the pipe? Kol Domelski is right about the power not 100Kw but 60 Kw. It is a pity that the author of the topic is silent!

Sory, but what friend read the instructions because I see in it something completely different. Maybe I would like a link. A friend will point out that this instruction is in the form of a B5 booklet, i.e. on the first page of the pdf the friend has pages 8 and 1.

Quote:

On the website of the manufacturer of the Flama Gaz valve you can download the instructions for the stop valve ZB and on page 4 writes that the maximum cable diameter is 1.5 mm2

That is why it needs to be a little wider. What my colleague gives (de facto page 5) I quote: "maximum wire cross section that can be inserted into the connection socket". This entry does not mean that we can connect the valve with anything shorter than 1.5mm2. This entry says nothing about which cable to use, but only which one you can connect to the plug. The instructions of the detection system as a whole are important. I gave it to the most likely author of Gazex. In their instructions, a colleague will also find larger cross-sections for greater distances (then you need to use an additional can).
It is the resistance of the cable (taking into account the reserve for the cable after several years of operation - damage, increased resistance at the contacts, etc.). Certainly my colleague knows perfectly well that the smaller the cross-section of the cable or / and the greater the distance, the greater the resistance, which at low voltages is of particular importance.
I do not go into the calculations and divagations that would suffice, it is important what the operating and assembly instructions for the system say because it will be important in the event of an accident and claiming damages.

Quote:

/ up to 30 m from the switchboard /

This is not in the ZB manual

Quote:

and on p. 2 point 10 write that the shut-off valve does not require any other servicing except starting

There is no point 10 at all on page 2. It is on page 7.
I read page 8 in the instructions (i.e. the rest of item 10 - the first page):
Frequency of checks required:
- after the first month of operation
- then every 3 months at least every 6 months

As it is printed in the form of a booklet, it is easier to see.

The maintenance activities in the paragraph the colleague talks about mean the actions taken by the operator / system user. In a word, this entry means that the valve is automatic and the user does not need to operate it. A bit confusing, but they've already written it.

Similar records in the frequency range are in the instructions of the detection systems.

Link to the manual: http://www.flamagaz.com/index.php?action=zb

Quote:

You can see that the gas pipe passes through the wall through the sleeve and the pipe outside the sleeve, so what else can you ask for, a pipe or pipe to the pipe?

Maybe it will be clear to a colleague about:

ORDINANCE
MINISTER OF INFRASTRUCTURE

of April 12, 2002

on the technical conditions to be met by buildings and their location.

(Journal of Laws of June 15, 2002)

Chapter 7

Gas installation for gaseous fuels

§ 164. 3. Gas pipes, in relation to the pipes of other installations constituting the building's equipment (water supply, sewage, electric, lightning protection, etc.) shall be located in a manner ensuring their safe use. The distance between the gas lines and other lines should allow for maintenance work.
4. Horizontal sections of gas installations should be located at a distance of at least 0.1 m above other installation pipes, whereas if the gas density is higher than the air density - below electric wires and sparking devices.
5. Gas installation pipes crossing other installation pipes should be at least 0.02 m away from them.

Domelski wrote:

...
5. Gas installation pipes crossing other installation pipes should be at least 0.02 m away from them.

Can I see 2cm? It is difficult to mount closer but if you insist you can.

Kolgo Domelski thank you very much for the very extensive explanations. To make sure I still have a question related to the quote:

Domelski wrote:

NC or NO type valves have the disadvantage that after the change has ceased it returns to its previous state. So we have a leak, the detection system is alarming, the valve closes, the gas is thinning, the system stops alarming, the valve opens and leakage again.

So I understand that it is a bistable valve with a safe position latch?

Quote:

Can I see 2cm? It is difficult to mount closer but if you insist you can.

Colleague of DiZMar, I had pictures (I will throw it in) of electric wires along the gas installation by wrapping the gas pipe with a cable. And these are the most common detection systems because the cable is led to the valve so according to some it is best to attach it to the pipe. And, if it's too bad, wind it up. Here, as you can see, even these 2cm are not there, because if there is a culvert through the wall, why use a hole next to it if you can push it with a pipe.

Quote:

So I understand that it is a bistable valve with a safe position latch?

No. These valves are simply a spring-loaded mechanism locked in the open position. When the signal gets the coil releases the blockage and the spring presses the valve (there are different versions: flap, mushroom, ball). Hence, it is generally not an NC valve. This is not a sophisticated construction, but some even have patents and some can be dangerous if someone is handled improperly. The spring inside can have a monstrous force at large diameters.

Thanks again. This time I figured it out. After all, it must be simple and therefore reliable construction.
pzdr