Suburban Hot Water Heater

Submitted: Tuesday, Jul 03, 2012 at 08:08
ThreadID: 96651 Views:2317 Replies:4 FollowUps:10
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Help please. When my hot water heater is heating, water constantly drips from the overflow hose. Once the water is hot enough the heater turns off and the drip stops. How do I fix it?
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Reply By: Grumblebum and the Dragon - Tuesday, Jul 03, 2012 at 08:11

Tuesday, Jul 03, 2012 at 08:11
You could try opening the release valve a few times, as you may have a bit of muck or corrosion in there. This should be done every few months anyway.

If that does not work replace the relief valve.

John
AnswerID: 490014

Follow Up By: Member - Peter M (QLD) - Tuesday, Jul 03, 2012 at 08:46

Tuesday, Jul 03, 2012 at 08:46
Thanks John
Do I need a plumber to replace the relief valve?
Or can a mature (old) fart do it?
PeteM
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Follow Up By: Member - Tony H (touring oz) - Tuesday, Jul 03, 2012 at 09:23

Tuesday, Jul 03, 2012 at 09:23
Shouldnt be a problem for a half way compotent old fart to handle....... just make sure you replace with a valve of the same/correct rating. Take the 'old' valve to the plumbing shop as a sample.
Insanity doesnt run in my family.... it gallops!

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Follow Up By: member - mazcan - Tuesday, Jul 03, 2012 at 12:37

Tuesday, Jul 03, 2012 at 12:37
hi petem
as advised make sure you replace the pres-rel -valve with one of the same pressure relief ratings or your water heater will explode
my irish neighbour thought he was saving himself some money and replaced his solar heater relief valve with one that was not the correct pressure and when he turned on the elect booster the tank burst flooding the roof and causing water to penetrate his ceiling
i didnt really feel sorry for him as he is the biggest scrooge i have ever me
cheers
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Reply By: Member - Darryl P (SA) - Tuesday, Jul 03, 2012 at 08:53

Tuesday, Jul 03, 2012 at 08:53
if u look in your operating instructions it tells u that as u heat the water it expands and there is no extra room in the tank for this expansion so it is released via the P & T valve
AnswerID: 490017

Follow Up By: Allan B (Member, SunCoast) - Tuesday, Jul 03, 2012 at 09:46

Tuesday, Jul 03, 2012 at 09:46
As Darryl says, it is perfectly normal due to expansion of the water and all heaters do it.
If it is dripping in an inconvenient location, extend the pipe with some hose to a more appropriate location but do not allow the relief pipe to become blocked.

Cheers
Allan

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Reply By: Sir Kev & Darkie - Tuesday, Jul 03, 2012 at 10:01

Tuesday, Jul 03, 2012 at 10:01
Peter,

Have a read of Question 3 of this link to Suburban hot water heaters FAQ page hopefully it will answer your query.

Cheers Kev
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Follow Up By: Member - Peter M (QLD) - Tuesday, Jul 03, 2012 at 10:41

Tuesday, Jul 03, 2012 at 10:41
Thank you all. I will have a go at fixing it today & if necessary buy the part required
Many thanks
PeteM
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Follow Up By: Ross M - Tuesday, Jul 03, 2012 at 13:03

Tuesday, Jul 03, 2012 at 13:03
PeteM
You don't need any new parts.
What you heater is doing is entirely normal as mentioned above.
Replacing the heater PRV WILL NOT stop the water drip. They all have to pressure release above the preset. Everyone heaters are doing the same thing.

You should already know this by using your powers of observation.
New parts will do exactly the same thing and you will have done your money too.
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Follow Up By: Grumblebum and the Dragon - Wednesday, Jul 04, 2012 at 08:19

Wednesday, Jul 04, 2012 at 08:19
Not so, my does not weep when heated.

John
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Follow Up By: Ross M - Wednesday, Jul 04, 2012 at 10:12

Wednesday, Jul 04, 2012 at 10:12
NOT when heatED but it has to when heatING.
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Follow Up By: Allan B (Member, SunCoast) - Wednesday, Jul 04, 2012 at 10:38

Wednesday, Jul 04, 2012 at 10:38
John, if the relief valve does not weep when heatING, then either the non-return valve in the cold feed line is inoperative or the installation is incorrect. The expanding water has to go somewhere.

Cheers
Allan

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Reply By: Member - Anthony W Adelaide - Tuesday, Jul 03, 2012 at 13:14

Tuesday, Jul 03, 2012 at 13:14
Hi Pete,

sounds like it is working OK to me mate but if you are determined to tinker with it, do'nt forget to turn the heater and water supply off first and then open any hot water tap to release any pressure build up.

Cheers
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Follow Up By: Member - Peter M (QLD) - Wednesday, Jul 04, 2012 at 07:40

Wednesday, Jul 04, 2012 at 07:40
Thank you all.
I will leave alone if releasing the valve regularly doesn't fix it
Regards
PeteM
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