Fitting Options and Instructions

The boiler condensate drain from boilers is typically run through a 22mm overflow pipe. The Boiler Buoy is designed to fit vertically, and in line with the overflow pipe. Below is a summary of three types of installation solutions.

To get a set of these instruction, please go to the Further Information page, to download the pdf.

A. Straight vertical pipe run

1. Measure 120mm gap in the existing pipe.
2. Cut the pipe and remove the piece.
3. Remove flexible sleeves from Boiler Buoy and slide onto cut pipes.
4. Insert the Boiler Buoy in the gap (fig.1).
5. Slide the rubber sleeves back onto Boiler Buoy to ensure seal.
6. Leave the installation instructions with the boiler.
7. Explain the operation to the home owner.

fig.1

B. Direct through the wall with pipe run behind boiler

Use this installation where the discharge is through an external wall directly from the rear of the boiler before exiting the property. Use overflow fittings to construct a trap design (fig.2).

1. Cut the existing pipe and insert a T-piece below the boiler
2. Drop the pipe work and form a 75mm trap below the T-piece.
3. Install so that the bottom of the Boiler Buoy is level with the top of the discharge pipe that  exits the property.
4. Install a vertical length of pipe to the top of the boiler to allow for venting.
5. Leave the installation instructions with the boiler.
6. Explain the operation to the home owner.

It is important to locate the Boiler Buoy in the correct position to ensure the float indicator functions correctly  (fig.2).

fig.2

C. Discharge is less than 175mm below the boiler before exiting the property.

Use overflow fittings to construct trap design (fig.3) where discharge is less than 175mm below the boiler before exiting the property, making it impossible to fit the Boiler Buoy in-line.

1. Cut existing pipe work and insert a T-piece below the boiler.
2. Use overflow fittings to construct a 75mm trap design (fig.3).
3. Install so that the bottom of the Boiler Buoy is level with the top of the discharge pipe that connects to side branch of the T-piece.
4. Install a vertical length of pipe to the top of boiler to allow for venting.
5. Leave the installation instructions with the boiler.
6. Explain the operation to the home owner.

It is important to locate the Boiler Buoy in the correct position to ensure the float indicator functions correctly  (fig.3).

fig.3