Fulton Electric (FB-L) Steam Boiler - Manual (Page 16)

Electric IOM
Installation
12
Model FB-L 012 015 018 024 030 036 050 075 100 150 200 300 500 750 1000
Unit Size: kW 12 15 18 24 30 36 50 75 100 150 200 300 500 750 1000
HP 1.2 1.5 1.8 2.4 3.0 3.5 5.0 7.5 10 15 20 30 50 75 100
(A) Horizontal IN 14 14 14 14 14 14 -- -- -- -- -- -- -- -- --
to remove elements MM 356 356 356 356 356 356 -- -- -- -- -- -- -- -- --
(B) Floor to Ceiling IN -- -- -- -- -- -- 95 95 95 95 95 139 139 139 139
to remove elements MM -- -- -- -- -- -- 2413 2413 2413 2413 2413 3531 3531 3531 3531
(C) Front of Boiler* IN 24 24 24 24 24 24 24 32 32 32 34 34 36 36 36
MM 610 610 610 610 610 610 610 813 813 813 864 864 914 914 914
(D) Sides & Rear of Boiler IN 12 12 12 12 12 12 12 12 12 12 24 24 24 24 24
MM 305 305 305 305 305 305 305 305 305 305 610 610 610 610 610
*This represents the door clearance. UL requires at least 36” clearance in front of any electrical control panel
D
D TOP
C A
B
FRONT
Electric Boiler Installation Guidelines
Electrical Considerations
Typical 120 VAC controls allow for a +10% and -15% voltage fluctuation.
Motors are designed to operate within the following limits at the motor terminals:
AC Power supplied is within +/-10% of the motor rated voltage with the rated frequency applied; OR
AC power supplied is within +/-5% of the rated frequency and with the rated voltage; OR
A combined variation in voltage and frequency of +/-10% (sum of absolute values) of rated values provided the frequency
variation does not exceed +/-5% of rated frequency.
For three-phase motors, the line to line full load voltage must be balanced within 1% of the rated motor voltage. If the motor is rated
208-230V, the voltage deviations must be calculated from 230V. Operation outside of these limits will degrade motor performance.
575V rated motors cannot be operated at voltages above 600V. Depending on the motor manufacturer, a 208V rated motor may
not be able to run below the design voltage.
Electric elements will have an increase in watt density if the applied voltage is higher than the element design voltage.
Therefore, electric elements have a 0% tolerance for operation over design voltage. Additionally, other components supplied may
only be suitable for the design voltage. Electric elements can tolerate a lower than design voltage, but the kW must be derated
accordingly.