![]() ![]() If you use more than that you'll beat the EF number, if you use less than that you'll fall short- it's as simple as that. The US Efficiency Factor (EF) is based on ~60gallons/day of use. As a result, the net efficiency is largely dependent on the volume of hot water used. Gas hot water heaters have very high standby losses (primarily from flue-convection, but also from the insulation gap at the burner. 80% AFUE hot air heating system (assuming the furnace was properly sized), could be same story, but maybe not: With lower overall weight and kW along with Tsurumi’s 3 year manufacturer’s warranty these offer an excellent solution if you find the DP series is too large for your application.More efficient? A very squishy "maybe", but don't count on it.Īn order of magnitude more efficient? NEVER! (At least not on an annual basis in heating-dominated Toronto!)Īn electric HW heater & electric-resistance heating- no gain except in summer (but quicker recovery on the tank.)Ī gas hot water heater v.s. All heavy duty motors have internal overloads fitted allowing for direct connection to a power supply and are supplied with at least 20m of heavy duty rubber power cable.ĭepending on the pump selected this range is suitable for pumping sand, bentonite and pulverised solids in suspension with a free passage size ranging from 10mm - 30mm Tsurumi have expanded on their agitator series of pumps which now includes the KTD, NKZ3 and GPN range to complement the existing KTV2 and KRS2 pumps.Īll pumps have an impeller and agitator constructed from hard chromium iron along with a hard faced (silicon carbide-silicon carbide) double mechanical seal running in an oil chamber for positive seal lubrication in any position.
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