Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 


10 posts

Wannabe Geek


  #1078769 2-Jul-2014 16:58
Send private message

Thanks Andrew,

I don't think the black one below the silver valve is a temperature ragulator. It spins freely and makes noise when I spin it with a tap on, thats why I thought it had something to do with presure.

andrewNZ: FYI, the bulky component on the incoming pipe (centre of the third photo) is the Ajax valve. It regulates the incoming water pressure.
If you adjust this valve one of two things happens. 

     

  1. Your hot water pressure gets worse
  2. You overflow the hot water onto your roof constantly meaning you'll possibly have no hot water and a huge power bill. 
The silver one is the tempering valve. It has hot water from the cylinder on one side, cold water from the supply at the bottom, and feeds the taps on the other side. The black valve below the tempering valve is probably a regulator to adjust the temperature at the tap. 

I suppose there is a chance that the tempering regulator has been adjusted and is causing this. The way my mind sees it, it could fit your symptoms exactly. BUT, I'm not a plumber.

2163 posts

Uber Geek


  #1078772 2-Jul-2014 17:08
Send private message

It's not a temperature regulator on it's own, but I think it will affect it. If you adjust the cold pressure to the tempering valve, it will ultimately affect how much it changes the temperature. High pressure forces more water through a hole than a lower pressure.

As you've already been messing with it, there's not a lot more harm to be done. So if you turn the black valve all the way on way (likely many turns) the hot water temperature at the tap should change.
My guess is clockwise will make it hotter, and anticlockwise might make it colder.
Keep in mind it takes time for a change to have an effect, the water has to get from the valve to the tap and heat the pipes too.




Location: Dunedin

 


 
 
 
 


gzt

11182 posts

Uber Geek

Lifetime subscriber

  #1078776 2-Jul-2014 17:11
Send private message

Because you had leaks there is a very small chance this problem is the result of an unusual airlock condition which has not yet cleared. If so, it's easy to fix. Turn on all the taps in the house and wait 5 minutes. Run your combined hot/cold taps on warm.

This one costs nothing and does not require any modifications to the system. ; )

3173 posts

Uber Geek

Subscriber

  #1078805 2-Jul-2014 18:20
Send private message

The black valve at the bottom is the cold water expansion valve. As the water in the tank expands you lose colder water from the bottom of the tank rather than hot water from the top.

6434 posts

Uber Geek


  #1078807 2-Jul-2014 18:24
One person supports this post
Send private message

hmmm, seems like a config error to me.

I would suggest a factory reset of your house. That should clear the cache and allow the hot water to flow properly.

If the error keeps coming back though, your processor (food processor of course) might be fried and you'll need to replace that.

Have your tried turning it off and on again?



10 posts

Wannabe Geek


  #1079105 3-Jul-2014 08:53
Send private message

kiwitrc: It might be a sticky tempering valve, you will see this near the HWC it has hot in one side and cold in the other, it mixes the two to a lower (safe temperature) You could try running a tap and giving the valve a firm tap or two to see if the hot then starts to flow from the tap. I would have thought a plumber would have thought to check this.


I have tapped the temering valve yesterday while have a tap on. I noticed that this morning, the water came though the tap in the bathroom is hotter than normal but not as hot as it could get. However, it was still cold from the kitchen tap. (the cylinder is located closer to the bathroom compared with the kitchen. I had the kitchen tap on for like 1 min only. I'm not sure if it is just a matter of time to get the hot water through.)



10 posts

Wannabe Geek


  #1079107 3-Jul-2014 08:53
Send private message

gzt: Because you had leaks there is a very small chance this problem is the result of an unusual airlock condition which has not yet cleared. If so, it's easy to fix. Turn on all the taps in the house and wait 5 minutes. Run your combined hot/cold taps on warm.

This one costs nothing and does not require any modifications to the system. ; )


I'll try this tonight. Thanks gzt.

 
 
 
 




10 posts

Wannabe Geek


  #1079756 4-Jul-2014 09:08
Send private message

gzt: Because you had leaks there is a very small chance this problem is the result of an unusual airlock condition which has not yet cleared. If so, it's easy to fix. Turn on all the taps in the house and wait 5 minutes. Run your combined hot/cold taps on warm.

This one costs nothing and does not require any modifications to the system. ; )


tried this but it didn't fix the problem...still won't get hot water with on tap on only...


4123 posts

Uber Geek
Inactive user


  #1079778 4-Jul-2014 09:31
Send private message

Maybe its time to call a plumber

3885 posts

Uber Geek


  #1081278 5-Jul-2014 01:23

That tempering valve will be stuffed. The Version you have (early Nefa / HMC) is the worst one for faults. Problem is the better ones have a different pipe layout. The cold and outlet connections have been swapped. Often the easiest method is just remove the tempering valve. Connect the hot and outlet pipes together. And put a cap on the cold pipe.

gzt

11182 posts

Uber Geek

Lifetime subscriber

  #1081437 5-Jul-2014 12:53
Send private message

Definitely call a plumber. Maybe not the same one you used previously. Either there were communication problems about this issue or that guy was not a very good plumber.

1 | 2 
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Intel introduces 10th Gen Intel Core H-series for mobile devices
Posted 2-Apr-2020 21:09


COVID-19: new charitable initiative to fund remote monitoring for at-risk patients
Posted 2-Apr-2020 11:07


Huawei introduces the P40 Series of Android-based smartphones
Posted 31-Mar-2020 17:03


Samsung Galaxy Z Flip now available for pre-order in New Zealand
Posted 31-Mar-2020 16:39


New online learning platform for kids stuck at home during COVID-19 lockdown
Posted 26-Mar-2020 21:35


New 5G Nokia smartphone unveiled as portfolio expands
Posted 26-Mar-2020 17:11


D-Link ANZ launches wireless AC1200 4G LTE router
Posted 26-Mar-2020 16:32


Ring introduces two new video doorbells and new pre-roll technology
Posted 17-Mar-2020 16:59


OPPO uncovers flagship Find X2 Pro smartphone
Posted 17-Mar-2020 16:54


D-Link COVR-2202 mesh Wi-Fi system now protected by McAfee
Posted 17-Mar-2020 16:00


Spark Sport opens its platform up to all New Zealanders at no charge
Posted 17-Mar-2020 10:04


Spark launches 5G Starter Fund
Posted 8-Mar-2020 19:19


TRENDnet launches high-performance WiFi Mesh Router System
Posted 5-Mar-2020 08:48


Sony boosts full-frame lens line-up with introduction of FE 20mm F1.8 G large-aperture ultra-wide-angle prime Lens
Posted 5-Mar-2020 08:44


Vector and Spark teamed up on smart metering initiative
Posted 5-Mar-2020 08:42



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.