How to install unvented electric thermal storage type water heater?

Before installing unvented electric thermal storage type water heaters, consumers should apply to the Water Authority for approval. The application should include plumbing arrangement of the installation together with the details of the water heaters.

Do unvented storage type water heaters comply with electrical products (safety) regulation?

Unvented storage type water heaters shall comply with the Electrical Products (Safety) Regulation (Cap. 406 sub. leg.). Notwithstanding the above, the installation of any water heaters shall be carried out by a licensed plumber for plumbing works and a registered electrical worker for Grade R electrical work.

What is the maximum GPM rating of an instantaneous water heater?

It is a function of both the storage volume and the recovery rate. E. Maximum GPM Rating3: Maximum GPM is the maximum gallons per minute of hot water that can be supplied by an instantaneous water heater while maintaining a nominal temperature rise of 67 °F (37.3 °C) during steady-state operation.

Does a storage heater need a hose set?

The storage heater must be permanently connected to the water mains and the use of a hose set is prohibited. The safety valve must be connected to the discharge pipe, mounted downwards to a floor drain in a frostless environment. As water may drip from the discharge pipe during operation of the heater, a floor drain should be provided nearby.

What temperature should a water heater be kept at?

The ambient air in which the water heater is located shall be maintained at 20°F dry bulb for the duration of the test. Set tank delivery water temperature set point to 125°F.

Does a 453 Energy Star water heater qualify for Energy Star?

453 The ENERGY STAR Residential Water Heaters specification shall take effect on TBD. To qualify for 454 ENERGY STAR, a product model shall meet the ENERGY STAR specification in effect on the 455 model’s date of manufacture.