Browse Forums Building Standards; Getting It Right! 1 May 18, 2010 4:06 pm I have just built a new house and have a Gas Water Heater. I understand that there is a regulation for water to be only at a certain heat, but my water temp is ridiculous. Firstly; In the shower - I dont even need to have the cold water tap on at all. I can just turn the hot water one on up to ten times to get the right pressure. To get my kitchen sink water hot enough to wash dishes (I like a hot sink of water), I have to boil my kettle first, otherwise I dont even need gloves! I have a cold right now and I couldnt even get it hot enough to create some steam to give me some relief Eventually it gets hot enough, but only after I wasted so much water! Its on the highest the dial will go, but it just seems silly that I barely need to use my cold taps! Re: Victorian Regs for Water Temp/Water Heaters? 2Sep 20, 2014 12:55 am Sounds as though you may have no lagging on your hot water pipes for some of the run. Cylinder hot water services usually have temperature of about 53 degrees C, but I advise turning down to 51 for longer lasting units some of which last as little as 2 years and average just 10 years. Mine is 23 YO already. Advise you get a good plumber (gas fitting plumber if it's a gas unit. Leonardo_23 Re: Victorian Regs for Water Temp/Water Heaters? 3Sep 20, 2014 7:10 am The outside tank has a "bolt" on it - triangular (?) which can adjust the temp. I have a feeling it is the opposite way/turn to which you'd think - but just test it. So long as you don't go overboard you should be OK. Re: Victorian Regs for Water Temp/Water Heaters? 4Nov 24, 2014 7:14 pm I had my hot water system just go cold on me one day. Thought that it died but it didn't. After much research I found that hot water services need to have the water at 80c so that no bacteria can grow in there. What they install is what's called a tempering valve ( what Saint Mike is referring to). If you go outside you will see a "T" junction coming from the outlet side of the unit. It actually mixes cold water with the hot water before it enters the house. It's a safety thing and from memory it is 50c as Leo said. The tempering valve also enables you to have double the water capacity as stated on the tank. Ie a 125l tank running at 80c tempered to 40c will actually give you 250l of water..theoretically. 3 options 1. The tempering valve could be faulty ( that's what my issue was) 2. Turn the triangle thing as mike said, it controls the temp 3. It's illegal to remove the valve but can be done however water will come out at 80c. A lot of older houses have no such valve, hence why the water is scalding hot. It's also illegal to install a HWS without a temp valve these days. Re: Victorian Regs for Water Temp/Water Heaters? 5Nov 24, 2014 9:10 pm AS/NZS 3500.4 requires that heated water be stored at not less than 60°C to inhibit the growth of Legionella bacteria. In childhood centres, nursing homes, primary schools and the like, the delivery temperature to sanitary fixtures used primarily for personal hygiene purposes must not exceed 45°C. In other buildings, the maximum temperature delivery to sanitary fixtures used primarily for personal hygiene purposes must not exceed 50°C. In kitchens and laundries, heated water must be delivered to fixtures and appliances at flow rates and temperatures which are adequate for the correct functioning of those fixtures and appliances. The temperature required may be greater than 50°C. Crazyk The tempering valve also enables you to have double the water capacity as stated on the tank. Ie a 125l tank running at 80c tempered to 40c will actually give you 250l of water..theoretically. Does the 'theory' take into account the principles of thermal equilibrium and the temperature of the cold water? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Victorian Regs for Water Temp/Water Heaters? 7Nov 25, 2014 9:05 am Crazyk Lol not really but just illustrates how a small HWS can deliver more water than it can store. Yeah, I knew your sentiment but I couldn't help thinking "I'm not going to have a cold shower at Crazy's place"! 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. I havent, and i havent looked to much into it, but on face value its not the saviour its trying to make out to be. Shared equity in your home is never a good idea. The… 1 3973 18 90481 From what I know about water tanks (I've been working with a client on them for a few years now) is this - The concrete can last a lifetime if they don't crack for some… 2 10629 |