In a control circuit for a hot water boiler, a(n) ____________________-limit temperature switch will stop the burner if the water temperature should become excessive.
Fill in the blank(s) with the appropriate word(s).
high
You might also like to view...
Fill in the blank(s) with the appropriate word(s).
The difference between vent sizing for natural-draft appliances and fan-assisted appliances is that:
A) Columns for fan-assisted appliances list both a minimum and a maximum appliance capacity for each vent size. B) Columns for fan-assisted appliances list sizes for both vertical and horizontal installation. C) Vents for fan-assisted appliances are always the same size as the connector on the furnace. D) Vents for fan-assisted appliances are typically larger in diameter for the same BTU capacity.
A rigorous ____________________ schedule is recommended for each machine in a facility.
Fill in the blank(s) with the appropriate word(s).
When troubleshooting single phase compressor motors, it is important that the technician:
A) Check the frequency of the power source. B) Measure the phase displacement between the two power legs. C) Check the start relay, start capacitor, and run capacitor. D) Check for phase reversal between L1 and L2.