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Boiler unit My problem is: I have recently renovated my house. In doing so i removed one of the raditors. I had to drain out the system to be able to take out the rad. Now i have to refill it... i am totally lost. what i do know is that i wll have to bleed out the air as the water rushes through to all the different rads.... what do i need to know about doing this.also how does the expansion tank come into play I am seeking answers on how safely refill my system so i can once again have heat. thank-you

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In a hydronic system for heating you must insure that the pressure on the boiler is maintained during the process of bleeding off the air from the system. There is a regulator for the water make-up to the system which normally maintains 12 PSI with the boiler cold. If this is stuck or fails to open you will loose the pressure on the system when bleeding the air off. Most are adjustable. Loosen lock nut on the adjustment stem and turn the screw (clockwise) to increase the pressure. Count the turns as you adjust it and return it to the original setting when you finsh bleeding off the air.

Posted on Oct 30, 2008

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Posted on Jan 02, 2017

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Hi I would like to drain the water out of my radiators so I can change the 2 zone valve on my heating system. It is allowing water to bypass so needs replacing but i dont want to flood the house. Please...


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Here's how it works....
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------------ The first three steps aren't strictly necessary for disassembly however if you're using a long handle screwdriver then removing the base makes it easier to gain better access to some of the screws.
Step 1. Remove the screw on each base arm.
Step 2. ... then lift and remove the arms.
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Step 8. To help with shifting the top out of the way, disconnect the hot plate/boiler heater connection. This will allow you to push the top of the unit away giving you the room you need to get inside.
Step 9. Unscrew the electrical safety earth and move the earth wiring out of the way.
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Step 12. Remove the two screws . The black plastic underside casing can now be pulled away (plastic tabs need to be pushed aside ). Step 13. Pulling away the plastic underside once screws and tabs are removed.
Step 14. Loosen the four black Torx (star shaped) boiler screws . Water in the boiler may leak out at this point so ensure the unit is upright and a towel is placed underneath.
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Step 17. The lower boiler assembly can now be lifted out.
--------
to get more detailed help click this link directly.it has all the required instructions and pictures to disassemble the unit.the model number in the link is bit different from yours but the system is very same so it will help you
http://www.r3uk.com/index.php/tech-tips/34-disassembly-guides/129-delonghi-ec710-coffee-maker-disassembly-and-repair
click on the link above directly.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

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1 Answer

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