| 1. | White Rodgers Marine Heating System 37-0883 User Guide Surface Type HOT WATER CONTROL Fixed Differential These controls are designed for use on hot water The highly sensitive Hydraulic Action element is held heating installations They have open on rise switch snugly in contact with the pipe or tank to provide action and fixed differential quick response to changes in water temperature INSTALLATION If the boiler burner or heater manufacturer recom mends a control location follow such recommenda tions If none is offer |
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