1. What is the first thing a tech should do when arriving at a no combustion
call?: Ask how many times the customer reset the unit.
2. What is the best long term solution for preventing a clogged nozzle?: -
Remove any underground storage tanks.
-Install a quality oil filter.
-Cut the suction line 10" above the tank outlet to prevent sludge.
3. Hot water and steam valves are interchangeable.: False
4. When in the presence of a flame, a cad cell normally reads..: 300-1000
ohms 5. If a pump is used to bring oil to a level higher than the tank, an oil
safety valve is required.: True
6. On a call where a hydronic heat system is putting out too much heat on
the stack, the issue may be..: -Too much draft.
-Not enough combustion air in the equipment room.
-Air leakage into chamber.
7. A high CO2 reading is caused by..: Incomplete combustion
8. An often overlooked cause of a high CO2 reading is..: Not enough
combustion air in the equipment room.
9. When multiple pumps are wired together in a heating system, they
should be wired in..: parallel
10. In a series circuit..: Current has one path.
11. When 2 burners are connected to the same chimney..: Sufficient draft must
be obtained to operate both units.
12. The ignition transformer is located..: In the primary control.
13. When safeties are wired in series one safety will affect the operation of
the others.: True
14. A stack switch is no longer allowed to be installed or replaced because..:
It's safety cutout time is higher than what is now required.
15. What is a power venter and what does it do?: An electrical device that
sends fluid gases into the chimney connector.
16. A burner in a confined space using 1 GPH of #2 fuel oil requires what
size permanent opening for combustion air?: 140"
17. The difference between an adjustable flame retention burner and a fixed
flame retention burner is?: Air inlets can be adjusted
Ignitor position can be adjusted
, .
Fuel can be adjusted
18. Oil tank design, construction, installation and testing shall be in
accordance with..: 527 CMR 9.0
19 Heat is a form of..: Energy
20. If a burner is operational but the circulator pump isn't running..: The
pump relay is not working correctly
21. A method of dealing with low viscosity/cold temps with #2 oil?: Increase
pump pressure/ decrease nozzle size
22. What is needed at the outlet of an oil tank?: Thermal safety valve
23. Where do you obtain an installation permit for oil burners?: Fire Dept
24. How many Btu's approximately in 1 gal of #2 fuel oil?: 140,000 btu's
25. Solid state ignition is superior to spark because: It is not affected by
reduced voltage
26. What is an installation?: The complete setting in place, ready for operation,
of an oil burner appliance together with its accessories and equipment.
27. How far must a power vent terminate from an opening or window?: 4'
28. A pump in a one pipe system that is full of air can be self purged.: False
29. List the minimum size of an oil supply line.: 3/8"
30. A material with electrons so loose it allows voltage to pass with little or
no resistance..: Is a conductor
31. If a high limit goes off, what does a low water switch do?: Maintains water
temperature
32. What is flashpoint an indicator of?: Minimum temperature oil will ignite but
not continue to burn.
33. What travels on the inside of the wire?: Volts
34. What does readily accessible mean pertaining to oil burning
equipment?: Capable of being reached easily and quickly for operation,
maintenance or inspection.
35. What is the minimum vent pipe on an oil tank?: 1 1/4"
36. What causes corrosion on a flue pipe?: When the flue pipe is operating
below the dew point temperature.
37. What are the methods to prevent oil waxing?: Put additives in the fuel.
Add an oil line heater.
, .
Cut with #1 fuel or kerosene.
38. What is the maximum tank size allowed inside unenclosed?: 660 gal
39. What is the purpose of a delayed oil valve?: Allows time for the oil pump to
get up to speed.
Delays oil flow to the nozzle.
40 On a call where a hydronic heat system is putting out too much heat, the
issue could be?: A shorted out thermostat.
41. When measuring a cad cell with the burner running and the ff terminals
jumped out, what should the cad cell reading be?: 1600 ohms
42. What are the possible causes of soot at or near the power venter?:
Incomplete combustion
43. What is a possible side effect of air in a nozzle line?: Soot
44. What is the cause if the cad cell is tripped on safety?: Dirty cad cell
Faulty cad cell
No flame present
45. If a boiler is running but the water temperature is low?: Undersized nozzle
46. If a boiler is at 30 psi and the relief valve opens?: Expansion tank is
undersized
Tank bladder is perforated
Tankless coil is leaking
47. Atomizing type burners were designed to burn which type of fuel?: #2 oil
48. One gallon of #2 fuel oil contains approximately:: 140,000 BTU's
49. Pour point problems with outside above ground fuel tanks can be
partially relived by:: -Relocating the outside fuel filters and strainers to the
inside -Switching to #1 fuel oil
-Reducing the pour point of #2 fuel oil by blending it with #1 fuel oil
50. A fuel oil storage tank cannot be installed:: In the furnace room within 5
feet of the heating unit
51. The primary purpose of a fuel pump in a high pressure burner is to:: -
Deliver oil at a constant and regulated pressure to the nozzle