Radiator Connection Methods

1. Top Bottom Same End Connection
Hot water enters from the top and exits from the bottom of the same side. It is the most advised and used method, and in most cases the most energy efficient.

2. Top Bottom Opposite End Connection
This method is generally advised for long raditors where the length of the panel radiator is 4-5 times more than the height.

Example: This method is advised for 500 mm high radiator with lengths of greater than 2250 mm (500 x 4.5 = 2250 mm).

3. Bottom Opposite End Connection
This method is not advised unless absolutely necessary. There will be an output loss of heat 10-20%, depending upon the height of the radiator. In this method, it is important that the right output radiator is chosen.

4. Connection for Ventil Radiators
Ventil compact radiators have additional two connection taps located at the bottom-right (or -left upon specification) of the radiator. The tap that is to the inner of the radiator is connected to the tap at the top right. This would be the water inlet to the radiator. The outer tap at the bottom is connected to the tap at the bottom right, which is the water outlet.

In this installation method, a thermostatic valve is used so that the heat is controlled more easily and economically.

5. Connection for Centertap Radiators
Centertap radiators have additional two connection taps located at the mid-bottom of the radiator. The centertap that is to the left of the radiator is connected to the tap at the top right. This would be the water inlet to the radiator. The other center tap at the bottom is connected to the tap at the bottom right, which is the water

6. One pipe system
In this installation method, the length and the diameter of the by-pass pipe should be calculated accurrately to minimize pressure drop whish will reduce the heat output of the radiators. A pump may be used to control the water pressure. In this form of connection, it should be taken into consideration that every radiator will have a different average temperature.

7. Serial Connection
This is a method used for connecting a series of radiators and is used very rarely. If it must be used, the total heat output of the series must not exceed 7000-8000 kcal/h, otherwise the capacity of the circulation pump will be exceeded. The capacities of the series should be calculated carefully because of the different average water temperature between each panel.

Installation Recommendations

Installation of a radiator requires above average DIY skills therefore we recommend that radiators are installed by a professional and qualified plumber unless there is a good reason not to go down this route.

For good practice and to reduce damage risk to the radiator, please make sure that:

  • The packaging is kept on the radiator until the decoration is completed or the heating is turned on permanently. This will protect the radiator from damages that may potentially happen during decoration work
  • Radiator is not dragged on the floor, but lifted properly
  • There is sufficient space around the radiator for circulation of air.

You can refer to the “Impact of Installation Positions on Heat Outputs” below for more information.

  1. Based on the inlet and outlet positions specified in the heating project, outline the radiator position on the wall. Using the lug position data and wall bracket dimensions in this catalogue, identify and mark the wall hung brachet positions on the wall.
  2. Remove the brackets and hardware pack from the radiator by cutting the film and the cardoard at the bottom of the radiator where necessary.
  3. Fix the brackets on the wall using the screws and screw caps provided in the hardware pack. Make sure the plastic saddle clips are fixed on the brackets to prevent noise when the radiators are in use.
  4. Cut out the film and the cardboard over the lugs at the back of the radiator and remove the lug protectors. Mount the radiator on the brackets.
  5. Mount the blind plug and airvent on the radiator and connect the pipes to the radiator.

Impact of Installation Positions on Heat Outputs

The surroundings of the radiator must be clear for it to provide the outputs stated in the catalogue. If any above fixing methods is applied for any reason, the heat output will decrease as shown in the figures.

If 600/22/1000 radiator is connected as in Figure 5 and if a= 18 cm, then the efficiency would be 0,81; Qn = 1672 watt (from the catalogue)

The real output will be
Qn = 1672 x 0,81
Qn = 1354 watt

A reflective surface (such as aluminum sheet) on the wall behind the radiator will increase the efficiency by reflecting heat back into the room. This is especially impotant if the radiator is installed in front of a glass window or a thin uninsulated wall.