Rheem 630 / 631 / 620 / 621 Gas Storage Water Heater :
Hot surface ignition (HSI) which removes the need for a pilot light, lowers operating costs and makes Rheem more reliable. There's also a 100% flame failure control built in
Multi-fin flue tube technology for ultra high performance, providing greater thermal input and better thermal efficiency in less space
Flue damper (on the 621 275) to close off the primary flue when the burner is not operating, reducing maintenance rates by up to 60% when compared to Australian
GasAssociation maximum allowance
Electronic thermostat providing fine temperature control with digital setting display
Room-sealed fluing option eliminates the need for fan assistance or mechanical ventilation, and power flue terminal connections simplify wiring
A bank of 8x621 275 or 631 275 Rheem commercial gas water heaters can deliver 7720 litres of hot water in the first hour
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