Case study: School boiler replacement - Consulting

Jan 10, 2019 · Condensing boilers operate most efficiently when they are operating in condensing mode, which generally occurs when a boilers return-fluid temperature is at or below 130°F. In the case of the Beveridge Middle School, the boiler system added heat to the heat pump water loop, which was designed to be maintained between 60° and 70°F during

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Limescale on heat exchange (boiler) - MoneySavingExpert

Sep 27, 2010 · All new boilers have to be high efficiency, ie condensing-combis - so they're at double the risk of limescale build up. I brought my old one from my old house which had an old boiler, but now I'm in a new house and the water is harder. When I was looking into these things, it's a bit bewildering.

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Domestic Condensing Boilers - Paul Robinson Heating and

Most modern boilers are made with condensing technology for a variety of reasons. As a result, we have produced this guide to domestic condensing boilers. Condensing boilers. The first question that needs to be answered, is what exactly is a condensing boiler? Well, a condensing boiler is a boiler that makes use of a larger heat exchanger.

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CFS Clean Flush Soak - Descale Lime, Rust, Calcium and

CFS Clean Flush Soak descalers eliminate limescale, calcium, rust, mineral deposits, uric scale, marine growth and more from HVAC and process manufacturing equipment. CFS Descale products can restore optimum performance of your industrial plate and frame heat exchangers.

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Schematic of unvented system | DIYnot Forums

Dec 03, 2008 · He hasn't mentioned that the high temperatures that thermal stores operate at causes a lot of limescale in hard water areas; plumbers fondly call them 'sludge-buckets'. They're also pretty pointless with a condensing boiler; in fact they cause a huge loss of efficiency.

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Boiler Overheating? Heres Why, And What You Can Do About It.

A failed thermistor could result in too much fuel being provided, water getting very hot, and the boiler overheating. #3 Limescale On The Heat Exchanger. If youve read our guide to boiler noise, specifically, boilers making whistling and kettling noises,

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Low temperature hot water boilers - Carbon Trust

Low temperature hot water boilers 9 Some standard boilers and most other boiler types have forced draught burners. These use a fan to force air into the boiler and up the flue. These burners enable the amount of combustion air to be controlled more closely, producing lower flue gas volumes than for atmospheric burners

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Module 127: Reduction and prevention of limescale in

Reduction and prevention of limescale. A typical water softener has a resin (or mineral) tank, a brine (sodium chloride and water) tank, and some form of control, as shown in Figure 3. As water enters the system, it passes through an ion-exchange column filled with thousands of tiny resin beads.

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ROTEX - GCU - Boiler - Gas Condensing - Compact Gas

Condensing boiler and thermal store with a footprint of just 0.36 m². The GCU compact can be used as an efficient thermal store for additional heat sources. For example, in addition to a solar system, a fireplace with water pocket can be used to provide support during heating and hot water generation.

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Combi Boilers | What are Combination Boilers and How do

In a domestic hot water system where the (condensing) boiler is a replacement for an existing storage cylinder system or a conventional boiler, it is essential that all redundant pipework is removed to eliminate dead legs. Dead legs are sections of pipe which are now redundant and have been capped off.

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What is the quietest boiler | Screwfix Community Forum

Jan 28, 2010 · I need a system boiler (not combi) and my installer wants to fit a Vaillant EcoTecPlus system boiler, he is going to do a power flush and fit a magnaclean to give it a good chance of being quiet but I'm not certain about noise long term.. Hence the question here, what boilers have people found to be the quietest after a year or so of operation.

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Boiler Pressure and Central Heating System Pressure -- Why

With condensing boilers, if there is a leak in the internal wall of a heat exchanger it is possible for system water to pass into the condensate sump and out via the condensate pipe. We've seen this happen once, with a Greenstar Ri boiler which was over 8 years old.

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Boilers and Central Heating - Northern Gas and Heating

Conventional condensing boilers are still very efficient and are often suitable for larger properties or homes where there is a significant demand for hot water. They may also be an option where your existing central heating system will not stand up to the water pressure that a combi-boiler needs to operate.

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New scheme to hire a boiler and avoid upfront cost Which

Hassle Free Boilers is offering consumers a new A-rated Vaillant boiler and upgraded central heating system, along with 12 years of servicing, including emergency call outs and all parts, for a £36.99 monthly fee. Consumer are locked into a 12-year contract and the repayments will increase by 3% each year after.

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Descaling a combi boiler | DIYnot Forums

Jan 03, 2010 · If you have limescale you will have to connect a descaleing machine to the mains hot and cold domestic pipes to the boiler after first disconnecting it from the system,remember the lime scale will be inside the water pipes not inside the primary pipes, what boiler b describes will clean out a build up of sludge ect in the boiler,some small firms offer de scaling at there premises if you take

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03 Related condensing boiler and influence of limescale information