This standard sets a legal guideline on how a hot water cylinder may and may not be installed. You can take a big guess on who would have lobbied the idea and pressed to get this incorporated into recent New Zealand building code G12 amendments. Can you imagine the yearly claims when thousands of hot water cylinders are installed without hot water cylinder trays? In that particular instance the damage was minimal and covered by the manufacturer. At the time the blog discussed a faulty product which resulted in flooding and insurance claim. Last year one of our blog posts discussed whether or not you need a cylinder tray. The above notice is what you will find on most newly sold (Image of a Rheem) hot water cylinders. “ IMPORTANT NOTICE: Safe trays are now compulsory with all new internal hot water cylinder installations, as per G12/AS1 clause 5.2.3 of the New Zealand building code.” Contact us today and let’s get your hot water going again! Would you like to upgrade to mains pressure hot water? We can provide you a mains pressure solution no matter what your requirements. While there, our plumber was also asked to replace an old faulty Wastemaster with a new Hurricane unit that do an even better job of chopping up the scraps. These hot water cylinders are extremely popular upgrades for old low pressure systems because they are easy to install, provide reliable mains pressure hot water, are very efficient and last for years to come. We sent our plumber off with a new Rheem 180L mains pressure cylinder to replace the old Simplex unit and provide the customer with higher pressure hot water in their home. Some are even up to 30 years old! We have replaced many of these old low pressure Simplex cylinders around Auckland. The old cylinder was a Simplex low pressure unit, which are very popular around older Auckland homes. So we recommended going for a Rheem 180L mains pressure cylinder to provide them with the solution they were looking for. They needed a solution for hot water and decided that mains pressure would be the ideal thing to go for. If this is something you would like to do, it is best to contact us to discuss the job.Ī customer recently called us with the issue of their low pressure cylinder finally giving up on them. However, this is more complicated than installing with a new cylinder, since access behind the cylinder is required. If you already have your cylinder installed and are not looking to replace it anytime soon, it is possible to retrofit seismic restraints to your exisiting cylinder. If you are getting a new cylinder installed, make sure that it comes with a seismic retraint kit! 6.11.5 An alternative acceptable solution for securing storage water heaters against seismic forces is given in Section 203 of NZS 4603. Where fittings and pipework are attached to the water heater through the supporting platform or floor a 50 mm minimum clearance shall be provided between the fitting and the support structure. The method illustrated in Figure 14 is acceptable for water heaters up to 360 litre capacity. It can also damage other items such as pipes which are connected to it, and cause a flood.Īlong with this, NZBC B1.3.2 standard requires building elements (including storage water heaters) to be adequately supported including support against earthquake forces. If there are no restrains, this is quite a lot of weight to be flung around in an earthquake, not to mention if you have an even bigger one. Hot water cylinders are heavy items, with a 135 litre cylinder weighing around 170 kg when it’s full of water. They are affixed by screwes and washers of a certain standard to the wall framing around the cylinder. Seismic restraints for hot water cylinders are steel straps used to keep a hot water cylinder in place, preventing it from falling during an earthquake. If you don’t, seismic restrains are an excellent choice when installing your cylinder. Do you want this to happen to your cylinder?
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