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Flow Switch
Dual-purpose control shuts off heater in case of pump
failure or low water flow. Mounted and wired in series
with the main gas valve. Check with Manufacturer for
proper paddle size. Utilize correct paddle size for prop-
er operation.
NOTE: Flow switch will not operate if flow is less
than 20 gpm.
Fig. 24: Flow Switch
Low Water Cut Off (Optional)
The low water cut off automatically shuts down the
burner whenever water level drops below the level of
the sensing probe. A 3-second time delay prevents
premature lockout due to temporary conditions such
as power fluctuations or air pockets.
Fig. 25: Low Water Cut Off
34
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