Converting from gravity to pressurised system

Recently installed a combi, converted from vented system

Showers have superb power but no control over thermostat, two showers in house, both the same, hot and cold right way round and work fine on gravity



Obviously I think cartridge need replacing to suit pressurised system,

How do identify the cartridge in now is for gravity only?



Gasman
Asked 11 years ago by Anthony

Youwill have to find out which cartridge you have.

Pinkfor a combi or multipoint and grey any system with balanced (equal)pressures.

Removethe on/off knob should just pull forward however it can be a bit of a bu**erthen remove the 4 screws that hold the temperature knob in place, remove thetemperature knob and then you will see the colour of your cartridge.

If youalready have the cartridge and want to carry on and replace it you will have toturn the water off to the shower.

Thenremove the cartridge you will need to remove the 4 large screws at the side ofthe cartridge these have posidrive or ‘Torx’ T25 heads depending on thereage.

Pullthe cartridge forward to remove.

Beforefitting the new cartridge you should replace the small ‘O’ ring at the rear ofthe body this is another bu**er to change……(something like a crochet hook or thesort of thing that dentists use will help)

It is not always necessary to replace this ring however if there anyproblems with the cartridge, the first question you will be asked is did youreplace the ‘O’ ring? if the answer is no! then you will be told to phone backonce it has been replaced.

Whenyou refit the cartridge make sure that the slot, (usually on the right of thebody ) the gasket and the body all line up properly then retighten thescrews.

On theolder versions you have to reuse the original brass screws if you have this typebe careful not to over tighten the screws because the brass inserts in the bodymay split, on a few occasions you may find they have split when you remove theold cartridge if this happens then you will probably have toreplace the body.

Refitthe temperature control knob (new screws supplied) the fit the on/ off knob, turn the water back on and check for leaks, if everything is OKremove clothes and have a shower!!!

Part No.

AQUAL-022-801

Cartridge Thermostatic Grey LP Gravity Fed & Pumped Systems Only

Part No.

AQUAL-022-802

Cartridge Multipoint HP/ Pink Combi Boilers Only

Part No.

AQUAL-022-804

Cartridge Manual Blue

Part No.

AQUAL-022-805

Cartridge Manual White

Click on the link below, choose the manufacturer of the shower youhave, scroll down the list of parts and select the part number yourequire.

You can then purchase the items online or call the office on 0131443 9917 pressing option # 1 for spares.

Answered 11 years ago by Anonymous

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