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#192248 - 02/03/10 01:50 AM Boilers  
twh  Offline
Member
Joined: Mar 2004
Posts: 905
Regina, Sask.
A trip to ND turned up this boiler installation when a man asked if I wanted to take a look at his son's heating system. I will point out that I do them a little differently.

[Linked Image]

Back-up Heat Source: [Linked Image]

Fan/Coil Unit: [Linked Image]

Main Circulating Pump (permanent wiring):[Linked Image]

Primary Heat Source Pump (temporary wiring):[Linked Image]

Domestic Hot Water (also permanently wired):[Linked Image]


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#192251 - 02/03/10 02:01 AM Re: Boilers [Re: twh]  
NORCAL  Offline
Member
Joined: Sep 2002
Posts: 869
Hillbilly engineering.


#192260 - 02/03/10 08:45 PM Re: Boilers [Re: NORCAL]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,211
SI,New Zealand
Good Lord!!

Honestly, could this get any rougher? eek

That car radiator is the finishing touch though, IMO.


Let's face it, these days if you're not young, you're old - Red Green grin

#192275 - 02/04/10 08:46 PM Re: Boilers [Re: Trumpy]  
Alan Belson  Offline
Member
Joined: Mar 2005
Posts: 1,803
Mayenne N. France
That sure looks both a mess and a hazard, but it needen't have been like that. These pics show that you can fit an amazing amount of equipment into a small space, make it easy to service yet still create a nice neat job - with a lot of planning cool
The fir-ply backing board shown here is just 8' x 4'
The system is fed with hot water from a separate boiler room, fired by oil.

[click to enlarge pics]

[Linked Image]

The whole board: including main 20A isolator, 3 variable output 100W circulation pumps, 3 motorized valves, 2 mechanical mixer-valves [85deg C to 40 deg C for underfloor heating, blue caps ], 2 x duplex breaker panels, 2 main wiring boxes, a digital programmer, 2 wireless programmer receivers, a top-up valve and water gage to maintain the system at 20 psi, 3 x 12v halogen luminaire transformers, domestic hot and cold water pipes and isolator jacks, basin and shower gravity drain, feeds to heated floor hydronic manifolds. All copper pipework 7/8", flow and return, is soldered or compression jointed, with every maintainable component isolatable by 3/4" ball valves for servicing - plus a work light and a recep. The cupboard [it's under the staircase] also contains a 2kW x 150 liter horizontal electric domestic water heater [out of view], the ironing board, all our best china in a cabinet, the fridge, [which backs in from the kitchen] - and our vacuum cleaner!

[Linked Image]

Close up of programmers. The upper digital unit time controls 85deg C water to a conventional radiator circuit, [ with stats on each rad], feeding 3 beds, a lounge, a [redundant] kitchen and a bathroom. The 2 white receivers control two underfloor heating zones at 40deg C. serving about 2000 sq ft on two floors, lounge, kitchen, a utility room, 1 x downstairs khazi. 2 beds, 2 bathrooms upstairs. Their programmers are freestanding room models, controlling times and temperatures as required. The breaker unit at right contains the EDF relay which switches the water heater on only during low tariff periods - I can overide it if needed.

[Linked Image]

Part view of pipework, sub-junction boxes etc. and the main manifolds to the floor heating. This system has been running now for about 2 years, the dust is from finish sanding of woodwork and sheetrock in adjacent rooms. As you can see from pic 1, I still have to finish the oak wainscotting and frame out the door. I've been remodelling this house for years - so no rush! crazy
The green verdigris on some of the pipes is from the special flux I used to solder the pipework with lead-free stuff - I obviously didn't wash it all off properly! blush


Wood work but can't!

#192280 - 02/05/10 12:46 AM Re: Boilers [Re: Alan Belson]  
twh  Offline
Member
Joined: Mar 2004
Posts: 905
Regina, Sask.
Some people don't care about being neat:

[Linked Image] [Linked Image] [Linked Image] [Linked Image] [Linked Image] [Linked Image] [Linked Image] [Linked Image] [Linked Image] [Linked Image]

Last edited by twh; 02/05/10 12:53 AM. Reason: Formatting

#192281 - 02/05/10 01:44 AM Re: Boilers [Re: twh]  
twh  Offline
Member
Joined: Mar 2004
Posts: 905
Regina, Sask.
Alan, I've never seen a controller for a boiler like that. I usually get a box of spare parts that the plumber left behind.

What is the boiler like?


#192283 - 02/05/10 10:58 AM Re: Boilers [Re: twh]  
ghost307  Offline
Member
Joined: May 2005
Posts: 900
Chicago Illinois USA
I remember one truly amazing Boiler Room that was the complete opposite of the one above.

It was the Central Plant located in a Catholic hospital in Kankakee, Illinois.
The Operating Engineer was one of the Sisters.

I had heard the expression "you could eat off the floor" but I had never seen an example before. I have since seen some patient-care areas of hospitals that weren't as clean as she kept her Plant.

Even the glass on the gauges and the thermometers were spotless. If there was ever a leak in there, you'd sure find it in an instant.


Ghost307

#192285 - 02/05/10 11:33 AM Re: Boilers [Re: ghost307]  
Alan Belson  Offline
Member
Joined: Mar 2005
Posts: 1,803
Mayenne N. France
[Linked Image]
I have two systems running off the same boiler, a conventional water radiator zone and 2 zones of hydronic underfloor.
It's really a very simple system to control. Each programmer sends a signal that heat is required to a motorised valve. This has a relay built in, so that backfeeds don't occur. The relay contact starts the pump [circulator] and sends a signal to the boiler to fire up. When you have three sets of controls running in tandem, the wiring gets a bit complicated so I put in all in two large junction boxes. As you can see I used European type choc-blocks, and annotated each circuit for faulting out. This pic was taken during trials, hence the thermometers.

[Linked Image]

The radiator circuit is run, hardwired, by what is basically a digital clock, although it has some features like on/off, day, 24 hours etc. Temperature is controlled by tweaking each radiator's thermostatic valve. The underfloor system has 2 wireless programmers. These send signals to open the relevant motorised valve. The programmers can be set to temperature and have 4 timed programmes to suit lifestyles plus a customisable option. Two temperature levels can be preset, for example at night we drop the temperatures by about 8F. The units are user friendly.

[Linked Image]

This is my boiler, running a pressure jet burner on diesel, although I am currently building a vegetable oil fueled burner. It is jetted for about 20kW. I run it pressurised at about 20psi. The fluid is water/glycol [antifreeze] plus inhibitors, hence the hand-pump for refilling at pressure after mending leaks blush. The red ball is a diaphragm type pressure bottle which accomodates fluid expansion.


Wood work but can't!

#192292 - 02/05/10 08:00 PM Re: Boilers [Re: Alan Belson]  
wa2ise  Offline
Member
Joined: Nov 2002
Posts: 782
Oradell NJ USA
[Linked Image]

Looks like my place, though I wouldn't leave the cover off the circuit breaker panel. eek


#192358 - 02/10/10 12:39 AM Re: Boilers [Re: wa2ise]  
twh  Offline
Member
Joined: Mar 2004
Posts: 905
Regina, Sask.
This is my favourite boiler room. The electrical engineer forgot the MCC and put the fire pump controller in the wrong room. After these were added the mechanical engineer decided to put three heat pumps in the room. Add in geo-thermal and it's hard to take pictures.

From the door:
[Linked Image]

The East Walkway:
[Linked Image]

The other end of the East Walkway:
[Linked Image]

The West walkway:
[Linked Image]

The other end of the West walkway:
[Linked Image]

Fire Pump Controller:
[Linked Image]

The boilers:
[Linked Image]

Behind the boilers:
[Linked Image]

Last edited by twh; 02/10/10 12:40 AM.

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