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General Specifications
The Hubbell tank is all welded heavy steel construction designed for 150 psi working pressure and tested to 300 psi. Each tank is centrifugally lined with 1/2" thick seamless high density Hydrastone
cement with guaranteed 100% coverage of all steel surfaces. All tank openings are non-ferrous solid copper-silicon and are resistant to the corrosive effects of hot water.
Plumbing
3/4" combination cold water inlet and drain, with non-corrosive strata flow diffuser which prevents incoming cold water from mixing too rapidly with the hot water in the tank and assures delivery of
more hot water - not lukewarm water.
A 3/4" hot water outlet with a uniquely designed built-in heat trap prevents heated water from radiating through the piping during standby periods.
Electrical
Copper sheathed immersion heating elements with low watt density for prolonged life - up to 6 KW in 120, 208, 240, 277, 480 volt single phase (See chart for details). An adjustable surface thermostat
operates in 110-170oF range.
Integral hi-limit with manual reset button for over-temperature protection is factory set at 190oF.
Upper and lower element configurations are factory wired for non-simultaneous operation.
Insulation
Highly efficient 2" thick polyurethane foam insulation exceeds the latest ASHRAE standards for energy efficiency and heat loss.
Jacket
The exterior protective jacket is constructed from high impact composite material which cannot rust or corrode and does not require painting.
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