![]() 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. not have a threaded connection at the end of the pipe so as to avoid capping.Do you want this to happen to your cylinder?.be piped independently of other equipment drains, water heater pans, or relief valve discharge piping to the point of discharge.discharge to a termination point that is readily observable by occupants, because discharge indicates that something is wrong, and to prevent unobserved termination capping.discharge in a manner that could not cause structural or property damage.discharge in a manner that could not cause scalding.not terminate more than 6 inches (152 mm) above the floor or waste receptor.be first piped to an indirect waste receptor such as a bucket through an air gap located in a heated area when discharging to the outdoors in areas subject to freezing, since freezing water could block the pipe. ![]()
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