Xylem McDonnell & Miller GUARDDOG 750 Series Instruction Manual Download Page 2

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When a low water condition occurs the burners turns off

and Red LED begins to blink. When the water level is 

restored to a level above the probe within 30 sec, the

boiler will return to the normal operation. If the water 

level remains in low condition, control will go to a low

water condition and Red LED will be solid Red.

Lock Out Delay

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49

On Manual Reset Units, if the control is in low water

condition (water is off the probe) and there is a sudden

power interruption, the control will remain in low water 

condition (Burner Off) even if the power is restored. The

Reset Button must be depressed to make the control

back to function, after the water level is re-established

to the probe.

On Manual Reset Units, if the control is in low water

condition (water is off the probe) and there is a sudden

power interruption, the control will remain in low water 

condition (Burner Off) even if the power is restored. The

back to function, after the water level is re-established

to the probe.

Reset Button must be depressed to make the control

Manual Reset units follow CSD-1 Code Compliance.

Manual Reset units follow CSD-1 Code Compliance.

When a low water condition occurs the burners turns off

and Red LED begins to blink. When the water level is 

restored to a level above the probe within 30 sec, the

boiler will return to the normal operation. If the water 

level remains in low condition, control will go to a low

water condition and Red LED will be solid Red.

Lock Out Delay

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