heatrae sadia 25l 9004010.

[Matt0029]

Has anyone one fit or serviced one of these before; Heatrae Sadia 25l 9004010.
It a 25 litre hot water storage cylinder.

 

[Matt0029]

Seems to have what they call a breather pipe coming from the top of it to a tundish. Appears to have this instead of an expansion vessel.

 

[ShaunCorbs]

It’s just an unvented unit internal t and p valve you need a min of 3m of pipe on the outlet

 

[Matt0029]

Is that 3 meters of pipe on the outlet for expansion?

 

[Matt0029]

It seems to have a solenoid valve on it for filling. I have one to look at that apparently isn't filling. Wondering if this could be the issue.

 

[Matt0029]

Mentions the solenoid valve there about no water flow. Suggests more electrical. Any idea how to test?

 

[ShaunCorbs]

Mentions the solenoid valve there about no water flow. Suggests more electrical. Any idea how to test?

It will be voltage to the coil could be dc or ac depending on circuit

 

[Matt0029]

Thanks so you would test the voltage to the coil and see if it was within parameters?

 

[ShaunCorbs]

Thanks so you would test the voltage to the coil and see if it was within parameters?

Yes spec or on the side of the coil this should be listed

 

[Matt0029]

Thanks yes there is two electrical connections on the solenoid valve. It would be a case of testing the resistance between these? There appears to be no number that this show be in the instructions. May ring technical

 

[ShaunCorbs]

Thanks yes there is two electrical connections on the solenoid valve. It would be a case of testing the resistance between these? There appears to be no number that this show be in the instructions. May ring technical

Test voltage first if you got voltage then test resistance of the coil to test if it’s bad

 

[Matt0029]

At which connections do you test voltage to the solenoid? I have only ever done resistance across the pins before.

 

[ShaunCorbs]

At which connections do you test voltage to the solenoid? I have only ever done resistance across the pins before.

At the solenoid pins just wiggle the connector off a smidge so you can get probes on etc

 

[Matt0029]

Thanks so it filled and stopped filling so the solenoid valve is opening and closing. It did take a long time to fill. However the flow from the hot taps feed from it is really slow. I was going to take the filter out on the cold feed Im the machine to see if clogged/ clean it. Any other ideas why hot water flow would be really slow.

 

[ShaunCorbs]

Thanks so it filled and stopped filling so the solenoid valve is opening and closing. It did take a long time to fill. However the flow from the hot taps feed from it is really slow. I was going to take the filter out on the cold feed Im the machine to see if clogged/ clean it. Any other ideas why hot water flow would be really slow.

It’s gravity by the sounds of it so solenoid needs to open when the tap is opened so sensing issue eg where the water is i would say

 

[Matt0029]

It’s gravity by the sounds of it so solenoid needs to open when the tap is opened so sensing issue eg where the water is i would say

So even though the solenoid opens to fill and shuts when the unit is full. It also needs to open when a hot tap is opened to allow the cold main to push the water out of the unit?

 

[ShaunCorbs]

So even though the solenoid opens to fill and shuts when the unit is full. It also needs to open when a hot tap is opened to allow the cold main to push the water out of the unit?

Unless it’s a gravity out unit

 

[Matt0029]

What's gravity out imply please? It's mains feeding it. Thank you

 

[Matt0029]

Do you mean gravity out as in feed from a storage filter?

 

[ShaunCorbs]

Do you mean gravity out as in feed from a storage filter?

Yes from the heater