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system boiler

A chiller boiler system includes a chiller, a boiler, pumps and HVAC controls in a single pre-engineered package. This reduces complexity for the field installer and increases the simplicity of installation overall. Most chiller boiler packaged systems are designed for large residential and small commercial structures.
A chiller boiler system is a hydronic system. It uses water instead of air to heat and cool a structure. A properly designed hydronic system is usually more efficient than a standard forced air system.Chiller boiler systems use radiant heating and cooling or fan coil systems to condition a home or business. This allows for multiple zones (a thermostat in each living area of the house) for increased comfort and decreased energy use.
Compared with air, water is a more space-efficient method of transferring heat around, into, and out of a building. A pipe of a given diameter can transfer heat at the same rate as an air duct with eighteen times the cross-section area and is much easier to install in small spaces.

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  1. R

    Regular or system boiler? With unvented?

    We recently moved into a 4 bedroomed, 15 radiators and two bathroomed house. The boiler is 22 years old and making some strange noises... So we need a new one. Also we are having a bathroom upgrade and the plumber said 210 lt unvented cylinder is best way to save having a twin imp pump. So I...
  2. P

    Baxi megaflo system boiler noisy.

    I recently had an issue with this boiler losing pressure, couldn't find a leak so monitored it for some time. checked charge on exp. vessel and was a bit low so adjusted. Still had leek so added leek sealer to system. This seems to have fixed the problem. However the boiler is now quite noisy...
  3. J

    Worcher Bosch 24i System Boiler

    Hi All Need some advice please. I recently replaced the HW/CH system in my late Mother’shouse in PolyPlumb plastic complete with new radiators and solar cylinder. Unfortunatelywhen the Worchester Bosch 24i boiler is switched on it only runs for 10-20seconds then shuts down with the blue power...
  4. A

    System boiler on a vented system

    Hi, Can I fit a "system" boiler on a vented system? I have a copper thermal store cylinder which is 210 Ltrs of water treated with inhibitor and is directly connected to the boiler and nothing else. The cylinder has a header tank mounted directly above it to ensure it is constantly topped up...
  5. R

    The fitting of diverter valve kit to worsester30cdi system boiler

    Hi Guys and gals new to this way of asking a bit of advice, but I want to fit an internal diverter valve to my wosester boiler,your going to ask why ,well ,the boiler as only been used for central heating .I have a tank with coil with header tank,worsesters book tells me to run two 15 mm...
    • rag22
    • Thread
    • boiler diverter diverter valve fitting header oil system system boiler valve
    • Replies: 21
    • Forum: Plumbing Jobs | The Job-board
  6. Deleted member 7121

    System boiler

    Hi All which system boilers are you all fitting and why , got a install to do and trying to get away from the WB ! cheers
  7. J

    Heat only or system boiler?

    Dear all, Just about to have a new boiler installed at my property and i am unsure whether to keep the present set up, which is an open vent heat only boiler OR opt for an open vent sealed system boiler. I have read conflicting opinions regarding this, with some people suggesting that if the...
  8. B

    System boiler making crunching noises....

    This is a circ pump question so not sure wether to put in Oil section or this one, probably best in this one.. Called to a custard last week with an external Grant (oil) system boiler making awful clattering crunchy noises. Boiler running on and off, no circulation. Easy diagnosis - impeller...
  9. M

    24i worcester/bosch system boiler

    All new CH system with Oso solarcyl twin coil unvented, solar coil not yet in use system boiler 'S' plan, everything works but the boiler temp setting has to be at 5 to raise the tank hot water to 60 to stop the stat calling and turn off, set at 4 the burner shuts down and the pump runs...
  10. J

    wiring up a system boiler.

    Got an ideal logic system boiler to install next week. converting it from open vented to a sealed system and it will only be doing the heating nothing else so the only control i have to add is a programmable stat. Most of my work is combi's but i have wired s and y plans up but never done just...
  11. I

    combi boiler used in central heating mode only as system boiler

    The customer wants a multi fuel system using thermal store...wood, lpg, solar. He does not have the cash right away for all the investment but needs to move into the house soon. He wants mains pressure hot water which the house is already plumbed for so one way forward is to to plumb in a combi...
    • iainfrancis
    • Thread
    • boiler central central heating system combi combi boiler oil system system boiler
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  12. A

    ideal system boiler

    hello,can anyone help,my ideal system boiler when you switch it to on fires up for 2 minutes then cuts out,fire it up again ok for 2 minutes then again cuts out,thanks,alan joint.
  13. I

    Fitting combi or system boiler to existing system with an open vented cylinder

    Hi Guys Looking for a bit of advice. Been asked to replace boilers on two separate systems, both are open vented heating systems with open vented hot water cylinder, one with a baxi backboiler the other with a vulcan floor standing atmospheric. In both situations a replacement boiler would need...
    • Indigo Install
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    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  14. A

    Vaillant 630 System Boiler, Ariston cylinder and Vaillant 470f Controller Issues :(

    Hi, A few months ago I had a new central heating system put in. I purchased the following: - Vaillant ecoTEC Plus 630 System Boiler - Ariston cylinder - Honeywell ST9400C - Vaillant 470f Wireless Weather Compensator Controller I already had builders doing other work in my house and they...
    • anil.bhatia
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    • ariston boiler controller cylinder issues oil system system boiler vaillant
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    • Forum: Plumbing Jobs | The Job-board
  15. hammers4spanner

    worcester system boiler

    doing a couple small jobs tomorrow at custs house and one of them is on 24 cdi system boiler, had quick look at it boiler flashes up but the circuit only gets luke warm and the temp on the boiler does not rise , stat was on full and rads fully open on trv's pushed it onto boost and it worked...
  16. J

    Ideal icos he24 system boiler

    Been to a breakdown on this boiler today it's firing up for a couple of mins going off does it 3 times then goes to lockout on L f I've changed the rectifacation probe still the so stripped the burner out that all fine insulation is all good, took the conny sump off and it was bone dry cleaned...
  17. G

    5 Bedroom House, 18 Rads, 1xBath, 3xShowers - Combi or System Boiler

    Hi We are currently having an extension built to add a fifth bedroom and a en-suite. We'll end up with 3 showers and a bath and about 18 rads. The existing 8 year old non-condensing boiler has to be moved and so I am considering replacing the existing 25 year old hot water tank (a weird...
    • goldfrapp
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    • Forum: Plumbing Jobs | The Job-board
  18. F

    Which tank for Worcester 30Cdi System Boiler?

    I am looking to replace my Telford Indirect Unvented tank, which one do you recommend, I was looking at the Megaflo because of no expansion vessel?
    • fayraz
    • Thread
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    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  19. R

    Intergas System Boiler Condensate Trap Protrudes Below Bottom Cover

    I am just installing an Intergas Compact SB40 boiler but the condensate trap protrudes about 15 cm below the bottom cover. It is unsightly and frankly a design nonsense. The other boilers in the range are all smaller and the condensate trap is also smaller and is concealed by the cover. Do you...
    • RichardMon
    • Thread
    • below boiler bottom condensate cover gas intergas oil smaller system system boiler that's trap
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  20. R

    What is the max dT that a normal system boiler can run at?

    I am playing with a system design that will need the output from the boiler at 60c; however I can get the return down to 20c or below. I can regulate the output temperature by controlling the flow rate through the boiler. E.g using a 32KW boiler, I will need a flow rate of 11 m/s. Would a...
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