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Across
1.UL standard for storage tank above 660 gal
4.The lower end of the vent pipe may never extend more then how much into the tank
6.Service switch must be within how many feet of the burner
9.Maximum allowed voltage for an oil burner circuit
10.Installed to remedy high viscosity
12.Type of fuel delivery set-up that requires a check valve on the supply line of an oil tank
15.Btu's in 1 gal. of fuel oil
16.Where should return lines be connected to the tank
17.Next to last component of the nozzle oil travels through
18.Lock out time of a burner firing 3.1-20 gph
19.Contains the flame and maintains a burn (combustion -what-)
20.The name of the lowest temp at which vapors in air above fuel ignite for short period of time when exposed to flame
21.Lockout time of a burner firing less than 3GPH
22.Fuel introduced to the combustion chamber before ignition (type of ignition)
23.Material used for oil supply and return lines
Down
2.Finest mesh screen size allowable on a vent pipe
3.Minimum distance from burner to tank
4.Minimum gauge oil tank
5.Minimum distance above grade for vent pipes
7.The flash point of #2 fuel oil
8.Changing what pressure changes the GPH of the nozzel
11.The combination of elements found in fuel oil
13.The difference between cut-in and cut-out of an oil pump
14.UL standard for storage tank 660 gal or less
15.Temp at which all thermal switches and valves trip

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