1
Massachusetts Oil burner Practice
2025/2026 Exam Questions and Verified
Answers | Already Graded A+
The cross connection between two supply tanks shall not exceed? - 🧠 ANSWER
✔✔660 gallons
When is an automatic draft control not required? - 🧠 ANSWER ✔✔When the
equipment is designed to control the draft.
Combustion performance testing can indicate: - 🧠 ANSWER ✔✔Improper air oil
mixture, too much combustion air, and low pump pressure.
If a second oil-burning appliance is installed in a single chimney, you must insure:
- 🧠 ANSWER ✔✔Sufficient draft is available for safe operation of all connected
equipment.
Delayed ignition can be caused by: - 🧠 ANSWER ✔✔Weak ignition transformer
You should replace the oil burner nozzle with: - 🧠 ANSWER ✔✔The
manufacturers recommended nozzle spray pattern and spray angle.
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 2
Viscosity problems can be corrected by: - 🧠 ANSWER ✔✔Decreasing the nozzle
size and increasing the pump pressure accordingly
The minimum operating pressure of an oil pump is: - 🧠 ANSWER ✔✔100 PSI
If a stack relay fails you, must? - 🧠 ANSWER ✔✔Replace it with an approved type
controller
Aquastats are normally found on what type of heating systems? - 🧠 ANSWER
✔✔Hydronic
Airstats are found on what type of heating systems? - 🧠 ANSWER ✔✔Forced
warm air systems
Under sized returns on a warm air system can result in what? - 🧠 ANSWER
✔✔Short cycling of the oil burner
Incorrect nozzle selection in regards to gallon per hour, can result in what
problems in a steam system? - 🧠 ANSWER ✔✔Some radiators not heating quickly
enough
Low boiler water temperature in a hydronic hot water system may be caused by? -
🧠 ANSWER ✔✔Undersized oil burner nozzles
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Massachusetts Oil burner Practice
2025/2026 Exam Questions and Verified
Answers | Already Graded A+
The cross connection between two supply tanks shall not exceed? - 🧠 ANSWER
✔✔660 gallons
When is an automatic draft control not required? - 🧠 ANSWER ✔✔When the
equipment is designed to control the draft.
Combustion performance testing can indicate: - 🧠 ANSWER ✔✔Improper air oil
mixture, too much combustion air, and low pump pressure.
If a second oil-burning appliance is installed in a single chimney, you must insure:
- 🧠 ANSWER ✔✔Sufficient draft is available for safe operation of all connected
equipment.
Delayed ignition can be caused by: - 🧠 ANSWER ✔✔Weak ignition transformer
You should replace the oil burner nozzle with: - 🧠 ANSWER ✔✔The
manufacturers recommended nozzle spray pattern and spray angle.
1
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, 2
Viscosity problems can be corrected by: - 🧠 ANSWER ✔✔Decreasing the nozzle
size and increasing the pump pressure accordingly
The minimum operating pressure of an oil pump is: - 🧠 ANSWER ✔✔100 PSI
If a stack relay fails you, must? - 🧠 ANSWER ✔✔Replace it with an approved type
controller
Aquastats are normally found on what type of heating systems? - 🧠 ANSWER
✔✔Hydronic
Airstats are found on what type of heating systems? - 🧠 ANSWER ✔✔Forced
warm air systems
Under sized returns on a warm air system can result in what? - 🧠 ANSWER
✔✔Short cycling of the oil burner
Incorrect nozzle selection in regards to gallon per hour, can result in what
problems in a steam system? - 🧠 ANSWER ✔✔Some radiators not heating quickly
enough
Low boiler water temperature in a hydronic hot water system may be caused by? -
🧠 ANSWER ✔✔Undersized oil burner nozzles
2
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
