Browse Forums Building Standards; Getting It Right! 1 Jan 25, 2022 7:41 am Hi all, I need your help and advice, please. After moving my newly constructed house in NSW, I found that there is water running out of the stormwater outlet under the nature strip next to the driveway, even on the hot sunny days where hasn't been raining for a couple of days. I've noticed that there is no water when we are not home which eliminated the possibility of having a water leak as the water meter isn't jumping off. After many tests and investigations, I found that it's the AC Indoor unit that discharges the excess water to the stormwater system when it's on cooling, but I don't why it's going to the stormwater outlet instead of going back to the rainwater tank despite it's half full only. I've contacted my builder and the guy told me that's how it's connected as you have half of your downpipes connected to the rainwater tank and the other half connected to the stormwater outlet to avoid any overflow when it's pouring heavily, and he said you can check which downpipe is connected to the rainwater tank and which is not by knocking on the downpipe and they should have the same level of water in parallel with the rainwater tank. When I checked that I found that only one out of 6 downpipes is empty while the other 5 have water inside. I've sent him the stormwater plan from my contract which shows that all downpipes are connected to the rainwater tank and the overflow is discharged from the tank to the stormwater outlet, he said will check with the plumber and the drainage guys and get back to me. I've tried to look at the BASIX requirements but couldn't find what I was looking for, so could anyone help with this and advise on the issue here? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ ance ofRe: AC indoor unit connection with Stormwater system 2Jan 25, 2022 8:46 am Markoov I found that there is water running out of the stormwater outlet under the nature strip next to the driveway, even on the hot sunny days where hasn't been raining for a couple of days. I've noticed that there is no water when we are not home which eliminated the possibility of having a water leak as the water meter isn't jumping off. Do you have agi pipes? Markoov After many tests and investigations, I found that it's the AC Indoor unit that discharges the excess water to the stormwater system when it's on cooling, but I don't why it's going to the stormwater outlet instead of going back to the rainwater tank despite it's half full only. It's because the water swampies dump has a high concentration of salts and other impurities. The regulations as per the National Construction Code (NCC) Part 3 (the Plumbing Code of Australia (PCA)), Page 66, B6.2 states: "A rainwater harvesting system must only collect roof water." Markoov .....the guy told me that's how it's connected as you have half of your downpipes connected to the rainwater tank and the other half connected to the stormwater outlet to avoid any overflow when it's pouring heavily, Not all rainwater harvesting systems need overflow pipes but despite how this is achieved, rainwater harvesting system have to comply with the Performance Requirements found in the NCC. The PCA, Page 65, BP6.2 states: (1) A rainwater harvesting system must be designed, constructed,and installed in such a manner as to- (c) avoid the likelihood of failure and uncontrolled discharge An uncontrolled discharge obviously refers to a tank overtopping. Unfortunately, plumbers and like installers are not trained in rainwater harvesting and even water tank designers and hydraulic engineers are often found wanting when it comes to properly designing and hydraulically calculating a water tank's overflow capacity to ensure exceedance of the tank's maximum expected inflow capacity. If you are in Sydney and the 5 connected downpipes drain average size roof catchment areas, you need to prioritise having the tank's overflow capacity during heavy rain calculated to ensure NCC performance adequacy. 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: AC indoor unit connection with Stormwater system 3Feb 02, 2022 10:42 pm The builder / plumber have actually done the correct install. It can't go to the tank as it's not roof water and it's not fit for drinking. It can't go to the sewer as it doesn't need treatment and just adds extra load to the treatment system. Most builders leave it to spill on to the grass, however subject to the soil type you have, this can and more often does cause localised abnormal moisture in the soil causing the soils to heave around the AC drain pipe (cracking brickwork.) The BCA and manufactures spec are actually silent on it. We are Expert Consultant's, and we are here to help. Re: AC indoor unit connection with Stormwater system 4Mar 04, 2022 10:59 am Markoov Hi all, I need your help and advice, please. After moving my newly constructed house in NSW, I found that there is water running out of the stormwater outlet under the nature strip next to the driveway, even on the hot sunny days where hasn't been raining for a couple of days. I've noticed that there is no water when we are not home which eliminated the possibility of having a water leak as the water meter isn't jumping off. After many tests and investigations, I found that it's the AC Indoor unit that discharges the excess water to the stormwater system when it's on cooling, but I don't why it's going to the stormwater outlet instead of going back to the rainwater tank despite it's half full only. I've contacted my builder and the guy told me that's how it's connected as you have half of your downpipes connected to the rainwater tank and the other half connected to the stormwater outlet to avoid any overflow when it's pouring heavily, and he said you can check which downpipe is connected to the rainwater tank and which is not by knocking on the downpipe and they should have the same level of water in parallel with the rainwater tank. When I checked that I found that only one out of 6 downpipes is empty while the other 5 have water inside. I've sent him the stormwater plan from my contract which shows that all downpipes are connected to the rainwater tank and the overflow is discharged from the tank to the stormwater outlet, he said will check with the plumber and the drainage guys and get back to me. I've tried to look at the BASIX requirements but couldn't find what I was looking for, so could anyone help with this and advise on the issue here? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Hi Markoov One option for you is to have your house checked out by a building inspector, who can determine if the pipes were properly installed, and advise you on how to remedy the issue. Cheers John Get sound legal advice. We manage Building Disputes, Construction Contracts, Security of Payment. PM for queries. https://www.contractsspecialist.com.au/articles/ Re: AC indoor unit connection with Stormwater system 5Mar 04, 2022 11:55 am Contracts-Specialis One option for you is to have your house checked out by a building inspector, who can determine if the pipes were properly installed, and advise you on how to remedy the issue. A building inspector does not do this work. 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: AC indoor unit connection with Stormwater system 6Mar 07, 2022 4:33 pm Markoov Hi all, I need your help and advice, please. After moving my newly constructed house in NSW, I found that there is water running out of the stormwater outlet under the nature strip next to the driveway, even on the hot sunny days where hasn't been raining for a couple of days. I've noticed that there is no water when we are not home which eliminated the possibility of having a water leak as the water meter isn't jumping off. After many tests and investigations, I found that it's the AC Indoor unit that discharges the excess water to the stormwater system when it's on cooling, but I don't why it's going to the stormwater outlet instead of going back to the rainwater tank despite it's half full only. I've contacted my builder and the guy told me that's how it's connected as you have half of your downpipes connected to the rainwater tank and the other half connected to the stormwater outlet to avoid any overflow when it's pouring heavily, and he said you can check which downpipe is connected to the rainwater tank and which is not by knocking on the downpipe and they should have the same level of water in parallel with the rainwater tank. When I checked that I found that only one out of 6 downpipes is empty while the other 5 have water inside. I've sent him the stormwater plan from my contract which shows that all downpipes are connected to the rainwater tank and the overflow is discharged from the tank to the stormwater outlet, he said will check with the plumber and the drainage guys and get back to me. I've tried to look at the BASIX requirements but couldn't find what I was looking for, so could anyone help with this and advise on the issue here? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Evap or refrig air con? If it's evap then the water is loaded up with salts and shouldn't really go to your water tank unless it's then just for garden use or pool top up. If it's refrig than there simply shouldn't be that amount of water discharging 0 5010 thanks. the above one is white Mat tiles and have gripness so going for this Mat tiles for both indoor and outdoor. Beaumont told it can be used in both indoor and… 2 2379 3 51860 |