Using regular water heater for hydronic radiators

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Hydronic heating is environment-friendly/economical system for commercial complexes.

Step 1-Open Vented Heating

Check draincock, on return pipe, with rubber hose for appropriate drainage. Turn off boiler; leave the pump on. After cooling, turn the pump off.

Step 2-Turn Water Supply Off

Turn off water supply to loft. Dissolve the ball valve.

Step 3-Fix Ball Valve and Draincock

Adjust ball valve arm to level. Place a batten across tank, and ball valve arm on top. Attach batten to valve arm. Put one hose end on draincock near boiler and the other at the gully. Use adjustable spanner for drainage.

Step 4-Check Water

Water is left in hydronic system for the radiator vacuum.

Step 5-Open Bleed Valve

Open bleed valve on a single radiator; start with radiators on top. After main system drainage, check individual draincocks in inverted loops.

Step 6-Fill Open-vented Heating...

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Hydronic heating can incorporate a variety of heating methods, including radiators and under-floor heating.

A hydronic heater (also known as a wet heater or hydronic system) is a type of central heating that uses a centralised boiler to heat water then pump hot water to radiators or under-floor heating coils around your home through a network of pipes.

Often, for the sake of efficiency and convenience, the boiler is also used as the main source of hot water for a home. These types of systems use what's commonly known as a 'combination boiler' to achieve this.

How do hydronic heaters work?

Hydronic heaters boil water in a large boiler tank - much like those used in storage tank hot water systems. The boiler is heated in the same way as storage tank hot water systems too - either using gas, electricity, solar energy or solid fuel. As is the case with solar hot water systems, using solar typically requires a gas or electric booster for consistent hot...

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With an understanding of how radiant heating works, we are going to take a look at the various options that are available when it comes to a hydronic heating system for the home. Heating designs for a radiant system can be tailored to most residential needs, whether it is a new custom home, or a remodel in a historic area. The flexibility of this type of advanced home heating system, as well as the high levels of energy efficiency, have made radiant heat an increasingly popular choice for contractors and families alike.

Basic Equipment

Every residential hydronic heating design will require the following basic elements to heat the home:

Boiler – The means to heat the liquid. Liquid Medium – Traditionally, this has been water, but some systems allow for other liquids or water and antifreeze mixes. Manifold/Thermostat – Connected to the thermostat, the plumbing manifold is the hub for directing water flow and room temperatures. Tubing – PEX or some other form of...
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Perfect for pre-existing homes

Panel radiators in Melbourne are mounted to the wall in each room that you wish to heat and are fed by pipes that run either beneath the floor or through the roof space. These units provide heat with an easy means of passing through into the room beyond and warming it to your desired temperature.

Ideal central heating alternative

Did you know that ‘central heating’ is a phrase that is simply used to describe the technique of heating your entire home from a single location? With our vertical radiators, the most common heat source is a gas boiler that generates hot water and passes it through pipes distributed throughout the home.

Thermostatically controlled

At Cambro Boilers, we ensure that our radiator heating systems are thermostatically controlled to ensure that your home is heated to your desired temperature. The addition of thermostatic heads also means that the panel radiators will be turned on and off when they...

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Hi
Comfort Heat Australia designs and installs hydronic systems with all the components being discussed here.

The Baxi Luna 3 boilers are one of the preferred natural gas boilers used to provide heated water to hydronic floor heating systems.

The issue with integrating solar hot water with hydronic heating is that the two waters cannot mix. As the solar hot water systems which attract Recs do not have heat exchangers, a system using solar hot water with an integrated floor heating system needs a tank with a heat exchanger, and although watermarked will not attract Recs.

All that is required to work out a practical solution to heating needs in any project is a floor plan and an idea of what is planned in construction, heating requirements, cost budgets and floor coverings.

Comfort Heat Australia is more involved in hydronic floor heating systems as the energy use can be lessened due to the lower temperature needed, 45 deg C as opposed to radiators...

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Indirect water heaters have been around since the 1970’s in this country, but somehow, even after all this time, they don’t seem to be very well understood. They get their name from the fact that they’re heated “indirectly” by your boiler. They’re connected via piping to your boiler and circulate relatively hot (usually 180 to 200°F) water from your boiler to a heat exchanger within the water heater. The water surrounds the coils of the heat exchanger to produce your domestic hot water. This is in contrast to the typical gas- or oil-fired water heater that heats water through the use of a “direct” flame or heat source within the water heater.

If your home is heated by a boiler — any boiler (hot water or steam, oil or gas, mid- or high-efficiency) — you have every reason to heat your domestic hot water with an indirect water heater. Some of the benefits include:

High efficiency — When you use your boiler as a heat source to produce your hot water, the water is...
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[Editor's note: Roger and Lynn Normand are building a PassivhausA residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor. Developed in the early 1990s by Bo Adamson and Wolfgang Feist, the standard is now promoted by the Passivhaus Institut in Darmstadt, Germany. To meet the standard, a home must have an infiltration rate no greater than 0.60 AC/H @ 50 pascals, a maximum annual heating energy use of 15 kWh per square meter (4,755 Btu per square foot), a maximum annual cooling energy use of 15 kWh per square meter (1.39 kWh per square foot), and maximum source energy use for all purposes of 120 kWh per square meter (11.1 kWh per square foot). The standard recommends, but does not require, a maximum design heating load of 10 W per square meter and windows with a maximum U-factor of 0.14. The Passivhaus standard was developed for buildings in central and northern Europe; efforts are...

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Hydronic Under Foor Heating

Hydronic Heating

Many consider hydronic heating as the most efficient (in terms of energy and cost), comfortable, flexible and innovative style of heating available. Hydronic heating has been one of the main heating systems of choice throughout Europe for over 1000 years.

Hydronic heating systems basically use hot water to produce primarily radiated and convected heating. The hot water is heated by either; solar, heat pump, gas, electricity, solid fuel, geo-thermal or oil.

The heat is collected via hydronic tubes or panels on your roof, or boilers on the ground and then transferred inside your home via tubing and panels.

Advantages of Hydronic Heating

There are many advantages to hydronic forms of heating and they include:

Hydronic Water Loops

While older systems used steam for heat transfer, modern hydronic systems nearly always use heated water only. This also allows the system to have the...

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Basics and Guides Solar Site Survey ... Before you embark on any of the solar projects listed below, you MUST do a solar site survey.
This will ensure that you actually get enough sun on your collector to make it worthwhile.
It only takes an hour, its fun, its easy and you will learn something about how the sun moves. Solar Site Survey... Solar Heating and You (pdf)


Energy Efficiency and Renewable Energy Clearinghouse

A high level (but useful) introduction to solar space heating concepts. Includes solar flat plate collectors, and sunspaces.
Includes an interesting and easy experiment you can perform using an existing window and some cardboard.
A good intro for adults and kids. Passive Solar Energy Book (to download)

Bruce Anderson and Malcolm Wells

The first two chapters provide some solar space heating basics, the other chapters provide details on direct gain, sunspaces, ...

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