The water pressure on my Ideal Isar boiler (2 years old) has gone down to under bar 1. Instruction booklet tells me to increase pressure by filling the Filling Loop (this is not marked on the diagrams) it says if you can't find then contact installer. Anyone got any idea what I can do rather than calling out a plummer?
Ideal Isar Boiler
- Thread starter Amy2204
- Start date
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I have same boiler. Filling loop is a flexible braided pipe connected between cold water supply and the central heating return pipe on your boiler. Sometimes it is left in place connected, some remove it and re-connect it to top up the system. Once the flexible pipe is connected you open the small tap on the connector to let water into the system and close it when the pressure has reached 1 bar. If pressure is dropping considerably there may be other problems.
As you have lost some pressure also take note of the pressure reading when the central heating is on. It should be about 2 to 2 1/2 bar maximum. Mine had a problem with the expansion vessel the pressure would go up to 3 bar which should not happen. Mine was initialy losing some pressure and the boiler was only 18 months old, i had to fit a new expansion vessel myself. These boilers have a very poor reputation.
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