Duel gas boiler installation

[Simon 45]

Hi Has anybody designed or installed a duel gas heating boiler installation for Schools, Hospitals, factories, office blocks or old peoples homes or domestic use.

We are now living longer, hyperthermia is a big killer when temperatures drop well below freezing, should we be prepared for the instance when our gas boiler fails and we are unable to find a heating engineer to carry out repairs at short notice.

Hence the question should we install a standby boiler, that may save our lives one day. What do you think?. switching between boilers could be made simple by operating an electric switch.

 

[bacon_sandwich]

Many of the above already have multiple boilers, where there is a single boiler, temp space heating or convention heating is very simple to set up. I carry 6KW of electric heating which i hand out if the boiler is going to be off. Offices often have a/c for summer, these can often be used in heat mode. From my experience not really an issue that cannot be resolved quickly.

 

[ShaunCorbs]

Depends on your heating load if under 30kw no point in going down the dual boiler route

Your better of just buying a few oil filled rads

 

[Last Plumber]

Hi Has anybody designed or installed a duel gas heating boiler installation for Schools, Hospitals, factories, office blocks or old peoples homes or domestic use.

We are now living longer, hyperthermia is a big killer when temperatures drop well below freezing, should we be prepared for the instance when our gas boiler fails and we are unable to find a heating engineer to carry out repairs at short notice.

Hence the question should we install a standby boiler, that may save our lives one day. What do you think?. switching between boilers could be made simple by operating an electric switch.

As Bacon said, we already do that. Have done for decades.

 

[king of pipes]

As above plug in electric fan heaters is all you need really . kop

 

[Chalked]

On with one right now.

 

[Gasmk1]

View attachment 31499 On with one right now.

very nice work we have been using the pressfit for about a year now looks so neat compared to soldered and a lot quicker

 

[Last Plumber]

Very Neat.

 

[Harvest Fields]

Really nice mate

 

[Last Plumber]

View attachment 31499 On with one right now.

Who stole Gas Meter?

 

[gmartine]

I sure like those purty plated butterfly/ball valves on those grundfos circulators, who sells'em?

 

[ShaunCorbs]

I sure like those purty plated butterfly/ball valves on those grundfos circulators, who sells'em?

Williams trade only sells them

 

[Chalked]

I sure like those purty plated butterfly/ball valves on those grundfos circulators, who sells'em?

They are called perfect pump valves

 

[gmartine]

Tnks, found'em on fleabay and Toolstation

 

[ShaunCorbs]

They are called perfect pump valves

You didn't pay 20 a pair did you ?

 

[king of pipes]

Nice tidy job chalk whats the building used for ?cheers kop

 

[Simon 45]

View attachment 31499 On with one right now.

Looks very good, first class. Did you design and specify the installation ?, is it fully automatic pre programmed to switch between boilers say every other week ?, or to be done manual. I think this is the way we move on.
My first condensing boiler broke down between Christmas and the new year, my heating engineer was already fully booked, he could not even give me a date when he was able to replace it, as I remember it was the year when even condensation pipes were freezing up. Electric heaters are ok for say 1 to 2 days but not for weeks if the residents are elderly, they may not be able to afford the additional expense. I have found gas is the cheapest of all central heating fuel types that I have tried.
I must admit I expected more heating engineers to be installing duel gas boilers, especially in larger dwellings.
Can I just thank everyone who took the time to respond.

 

[ShaunCorbs]

They will be all working at the same time and combining the outputs

And space and cost limits you be looking around 6k to swap a set a boiler, and who says it's not a design fault that breaks them like you have said external condense pipe

 

[Simon 45]

Many of the above already have multiple boilers, where there is a single boiler, temp space heating or convention heating is very simple to set up. I carry 6KW of electric heating which i hand out if the boiler is going to be off. Offices often have a/c for summer, these can often be used in heat mode. From my experience not really an issue that cannot be resolved quickly.

Hi I remember my younger days when we had ducted heating/ air conditioning ventilation system installed in an office complex my developer/employer had built. The summer months the system was great, no complaints, but when the winter arrived, the women were not very happy, a regular comment was its all right for the men they where trousers. The temperature difference from floor to ceiling was just to much. The heating engineers had strung cords from floor to ceiling in most offices with thermometers strung at intervals, they tried for months to balance the system, to be honest I do not think ever sorted it. As we all know offices have to reach a minimum temperature to comply with regulations.
I like the way you look after your customers by providing them with electric heaters, that's very thought full of you.

 

[king of pipes]

Nice gaff mate great to work on a quality Job. Cheers kop

 

[Chalked]

The combined load for the property is the total output of the boilers combined. Hot water, space heating and swimming pool.
In fact tthis set up is 20kw shy of the building load. Because, when the pool is up to temperature, it only takes 20% of the output to heat it from cold. Same with the underfloor heating (1000m2 of the stuff!) .
This system has a cascade controller to bring on one, two or three boilers depending on load. It also cycles the lead boiler, so they all share the load.

Reasons for using multiple boilers.
1. Built in redundancy. If one breaks down, the other two will at a push, run th whole system.
2. Cost it's cheaper to get three smaller boilers, than one, or two larger ones.
3. Servicing. All parts are stocked at merchants and any local gas safe service guy can do them.
4. Fluing. Large commercial boilers have large flues. Smaller boilers are less obtrusive.

Back to the original post.
Generally it's not financial sense to have a spare. You can't see the whole plant room in the pic . But there is over £20,0000 worth of equipment in there. Never mind fitting it and having a room to get it all in.

 

[Simon 45]

The combined load for the property is the total output of the boilers combined. Hot water, space heating and swimming pool.
In fact tthis set up is 20kw shy of the building load. Because, when the pool is up to temperature, it only takes 20% of the output to heat it from cold. Same with the underfloor heating (1000m2 of the stuff!) .
This system has a cascade controller to bring on one, two or three boilers depending on load. It also cycles the lead boiler, so they all share the load.

Reasons for using multiple boilers.
1. Built in redundancy. If one breaks down, the other two will at a push, run th whole system.
2. Cost it's cheaper to get three smaller boilers, than one, or two larger ones.
3. Servicing. All parts are stocked at merchants and any local gas safe service guy can do them.
4. Fluing. Large commercial boilers have large flues. Smaller boilers are less obtrusive.

Back to the original post.
Generally it's not financial sense to have a spare. You can't see the whole plant room in the pic . But there is over £20,0000 worth of equipment in there. Never mind fitting it and having a room to get it all in.

Very impressed

 

[bacon_sandwich]

I was asked recently if it would be better to fit two boilers instead of one. Was a large house circa 60KW, certainly i could have done it but the space requirements would have meant he would have lost a good part of his utility room. Having a spare boiler with 100% spare capacity cannot cost in economically. If on the off chance it does break down, where i am, heating engs prioritise breakdowns for the vulnerable and running electric heating for a few weeks is peanuts compared to a dual boiler set up.

 

[Ric2013]

running electric heating for a few weeks is peanuts compared to a dual boiler set up

You beat me to it!

 

[Ric2013]

Thermal store with immersion backup could be used to provide selective or background heating in no-boiler situation. Often thought of doing this for my own place.