Safiery 12V hot water tank system 8L 30A – 400W to 70°C8L electric hot water tank for 12V systems, 400W element

Overview

The Safiery HWA128 is an 8L electric hot water tank that runs directly from a 12V system. Its 400W element draws 30A and heats the stored water to 70°C, giving hot water for galley and shower on boats, campers and off-grid builds without LPG. For 48V systems Safiery offers the HWA488 with a 1,000W element, and the All-Electric Combo adds an instant heater for continuous flow.

• 8L tanks with 12V 400W or 48V 1,000W element
• 12V tank heats to 70°C on 30A
• Instant heater rated 6,000W at 220–240V
• Instant flow 5–7L/min, outlet 35–55°C
• Combo pairs an 8L tank with an instant heater

The range

Safiery's hot water systems heat water electrically from the battery bank or the inverter instead of LPG. The 8L tank systems store heated water: the 12V version uses a 400W element on 30A and heats to 70°C, while the 48V version has a 1,000W element for faster recovery. The All-Electric Combo pairs an 8L electric tank with an instant electric heater for continuous hot water.

Instant heater

The tankless instant heater is rated 6,000W at 220–240V 50/60Hz, drawing 25–27A. A flow sensor starts heating from about 1.2L/min, and the touch panel sets the outlet temperature between 35°C and 55°C at a flow of 5–7L/min. If the flow exceeds its heating capacity the heater stops and shows a message, and after very long continuous use it pauses to protect itself.

Installation and compatibility

The instant heater must be installed vertically by a licensed electrician and plumber, permanently wired and earthed, on a 40A circuit breaker with 4mm² conductors. Water pressure must stay between 0.02MPa and 0.6MPa (6 bar), a pressure relief device must be fitted and the inlet must not be fed from another water heater. The manual states that it is not for potable water supply and must not be installed where it can freeze.

The unit measures 230×350×60mm, weighs 5.3kg and is rated Class 1 and IPX4. It hangs on two wall brackets with inlet and outlet at the bottom; before first switch-on, water should run through it for one to two minutes to purge air from the heating element. Error codes E3, E5, E6 and B1/B2 indicate overheating, leakage current, excessive flow and a temperature sensor fault.

Questions and answers