Heater control for spa

Details Heater control for spa Heater control for spa

1998-01-15

1999-08-03

Wayner, William

Electric heating

Heating devices

With power supply and voltage or current regulation or...

45412, 4493, 236 46R, H05B 102, A47K 300

Patent

active

059321270

ABSTRACT:
A spa is maintained at a ready-to-use temperature by a daily heating cycle that is initiated by a filter cycle clock, which traditionally has been used only for programming the circulation of the spa water through a filter. Once a daily heating cycle has been initiated, it normally concludes only when the temperature of the spa water reaches a desired temperature that the user has preset into a thermostat. However, for safety the heating cycle is terminated immediately in the event the heater temperature becomes excessive, since this event could result from lack of water or inadequate circulation.

REFERENCES:
patent: 4233694 (1980-11-01), Janosko et al.
patent: 4780197 (1988-10-01), Schuman
patent: 5585025 (1996-12-01), Idland
patent: 5809796 (1998-09-01), Zakryk

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