How to Install a Central Heating Boiler

What You'll Need
Tube Cutter
Various Pipes
Pipe Bending Spring

If you need to install a new central heating boiler in your home, you should consider attempting to take on the job yourself before calling a professional in to do the job. While this is not a job for the faint of heart, it is completely manageable with a little know-how and attention to detail. Below you will find the steps you will need to take to install a new central heating boiler in your home and you will be well on your way to keeping your family warm during the long winter.

Step 1: Determine Positioning Requirements

Before you begin to actually install the new boiler in your home, you will need to choose a location that will allow the unit to function efficiently and safely. The standard location for a boiler will be in the interior of an exterior wall, so that exhaust from the system is allowed to vent outside, while fresh air is available to aid in combustion. Make sure your boiler will be generally separated by any combustible materials by several inches all around.

Step 2: Select Pipes and Determine Pathways

Next, you will need to determine the type of pipes that you will be using for your heating system. If you use natural gas to power your boiler, use black-threaded piping to connect to the main gas line of your home. You will also need a water pipe to connect your boiler to the water line in your home. Try to route your pipes underneath floor boards if possible. Make a map to position pipes to reach both downstairs and upstairs radiators. Make sure that your main flow and return pipes are all running parallel to one another.

Step 3: Install Pipes Along Pre-Mapped Routes

Once you have completely mapped out the route that your pipes will be running, it is time to begin installing them. Run pipes in areas such as under floor boards, through ceilings and through walls in order to make your heating system as inconspicuous as possible. Use 22mm pipes to create the main air flow circuits throughout your house and 15mm pipes coming off of each individual radiator. Fit the radiator valves into their slots. Attach the radiator tails to the radiator values and lock shield valve bodies. Connect the cold water main to the boiler itself to do this, use a 15mm copper pipe.

Step 4: Connect Gas Supply

For this step, you may need to contact a professional. Gas is tricky to work with, so you will want to contact a licensed fitter to run your home's main gas line to your boiler for you. You should have a number of registered fitters in your area that can be located in your phone book or online.

Step 5: Turn Unit On to Test

Once you have completed installation of your central heating boiler, turn the unit on to test and see if it is working properly.