Browse Forums Bathrooms and Laundry 1 Nov 01, 2010 9:19 pm hi guys... i am building a house with 3 bathrooms contract allows for Dux prodigy 3 gas powered 170 litres storage HWU (http://www.dux.com.au/products.php?name=170F) would a rinnai infinity 32 instantaneous HWU be more superior to that? (http://www.rinnai.com.au/index.php?opti ... d=2&id=115) i would prefer something that when someone is using hot water in the kitchen, it will not affect another person showering in the bathroom. thanks Re: Hot water unit: Dux / Rinnai 2Nov 03, 2010 10:52 am That Rinnai 32 is big unit. It should be able to cope with someone a shower and someone using tap to fill a sink/basin/pot. The other thing that will affect the temperature is where each outlet is compared to the to others My current vanity basin is the last outlet in the line so it takes the longest to heat up. If your kitchen is in front of the shower line, you may get some heat loss until; the unit catches up with the required flow Re: Hot water unit: Dux / Rinnai 3Nov 06, 2010 10:53 am Youre comparing two different systems. The storage system will continue to heat up the water in the tank when its not being used. As it loses temp. The instantaneous obviously only heats up water as its being used. This results in cheaper running costs. The disadvantage with the Rinnai this, they are very temperamental, in that if installed correctly and the pipework is fitted correctly in regards to size etc, you should be able to use more than one point at a time. If the pipework has been installed poorly, you will get a noticeable pressure drop when a second tap is turned on. Secondly, you will experience a greater delay in getting hot water to a distant tap than with a storage unit. Thirdly, most have an inbuilt tempering valve which gives water at 50 degrees. Expect a further temp loss from more distant fixtures. The 32 signifies liters per minute, and they activate on a minimum use of 8 liters per minute. So water usage restrictors fitted to all new tapware can have a significant affect upon them. Repair costs on instantaneous units can be quite expensive as compared to storage units, which are much cheaper to repair. In short, instantaneous units are great, IF pipe sizing is correct and runs arent too long and they dont decide to be tempermental. Im a plumber and I work with both types installing and maintaining them. Re: Hot water unit: Dux / Rinnai 4Nov 15, 2010 12:09 am vvs mand Youre comparing two different systems. The storage system will continue to heat up the water in the tank when its not being used. As it loses temp. The instantaneous obviously only heats up water as its being used. This results in cheaper running costs. The disadvantage with the Rinnai this, they are very temperamental, in that if installed correctly and the pipework is fitted correctly in regards to size etc, you should be able to use more than one point at a time. If the pipework has been installed poorly, you will get a noticeable pressure drop when a second tap is turned on. Secondly, you will experience a greater delay in getting hot water to a distant tap than with a storage unit. Thirdly, most have an inbuilt tempering valve which gives water at 50 degrees. Expect a further temp loss from more distant fixtures. The 32 signifies liters per minute, and they activate on a minimum use of 8 liters per minute. So water usage restrictors fitted to all new tapware can have a significant affect upon them.. Repair costs on instantaneous units can be quite expensive as compared to storage units, which are much cheaper to repair. In short, instantaneous units are great, IF pipe sizing is correct and runs arent too long and they dont decide to be tempermental. Im a plumber and I work with both types installing and maintaining them. hi ive been looking at different systems but it gets confusing what sizes to get we have 1 bathroom and i was told to look at the bosch hydro ignition gas hot water service. i was told a 13L one was enough for our house but i dont want crap water pressure i want the system installed on the side of the house which will make it 4 meters from the bathroom 6 mtrs from laundry and 8 mtrs to the kitchen sink it also has to run on lpg bottled gas given the fact you sound pretty cluey on this subject do you think we are getting the right system or should we get a bigger one??? stay safe happy building the sun master is the solar heating to "warm" the water in the tank the S26 is your hot water system which will heat the water (25 degrees?) so with both turned on you… 2 14047 I want to build a decking to the drawn shape outlined in black. The problem is how close can I build to the gas hot water unit? Will I be able to build around it and be… 0 20230 DIY, Home Maintenance & Repair Hi, I've got a brand new (2nd hand) Bosch Hydropower 16H tankless hot water heater. Since it was installed I have noticed it leaks a lot. I took the cover off and it looks… 0 24147 |