Disassemble and reassemble a central heating radiator with hot water.
Tools and materials needed:
A flat key.
A multiple clamp.
A screwdriver or a key of the traps.
An empty glass.
A basin or a container of medium size.
Step 1: Know your radiator.
Before you start dismantling your radiator, it is necessary to identify the important elements for this operation.
Locate the control valve, usually located at the top left of the radiator. It is he who allows you to choose the temperature of the radiator. It can be standard or thermostatic.
Then identify the radiator vent, always at the top, away from the control valve.
Finally, locate the water return valve to the boiler, which is usually located at the bottom of the opposite side of the control valve. The valve is closed by a bolt, located under a cover and attached to the radiator with a nut.
Check the weight of your radiator before disassembling it, old cast iron radiators can sometimes be much heavier than you think. In any case, you must be two to handle the radiator.
Step 2: Purge and empty the radiator.
Before removing the radiator it is essential to empty it by removing the water, otherwise the liquid may escape and spread in your room.
To empty the water in the heating circuit, remove the cover and close the water return valve (counting the number of turns made by the key), unscrew the return valve nut to the boiler. placing a basin below to recover the water. Then completely unscrew the nut to separate the radiator from the valve.
Step 3: Remove the radiator.
Then unscrew the valve connection to the radiator, which will be completely free from the wall. Lift the radiator off the rear brackets or feet and take off completely from the wall.
Once the radiator is removed, place an adhesive tape on the water tap to block it.
Also put a plug on the outlet of the water circuit.
Step 4: Replace the radiator.
Replace the radiator on its supports then screw back the nuts of arrival and departure of water.
Re-open the radiator control valve
Then re-open the water return valve to the boiler (making the same number of turns as you did previously to close it)
Bleed the radiator, normally air and then water should escape, if not, restart the purge and close the bleed screw.