OFTEC Commissioning and Servicing

Question 1

What is the first step when commissioning a newly installed oil-fired boiler?

Accepted Answer

Check the installation complies with manufacturer instructions and Building Regulations

Answer

Light the burner immediately

Answer

Set the room thermostat

Answer

Fill the oil tank

Question 2

What document must be completed and left with the customer after commissioning an oil-fired appliance?

Accepted Answer

A commissioning checklist/certificate and Building Regulations compliance notification

Answer

Only a verbal explanation

Answer

A receipt for the oil used

Answer

Nothing — no documentation is required

Question 3

Why must the heating system be flushed and filled before firing the boiler for the first time?

Accepted Answer

To remove installation debris and ensure water circulation before applying heat

Answer

To check for leaks in the flue

Answer

To test the oil pump

Answer

To warm up the electrodes

Question 4

What safety device must be tested during the commissioning of an oil-fired boiler?

Accepted Answer

The overheat thermostat (limit stat) must be tested to confirm it shuts down the burner

Answer

Only the room thermostat

Answer

Only the programmer timer

Answer

No safety devices need testing

Question 5

What must be checked regarding the electrical supply to the oil burner during commissioning?

Accepted Answer

Correct polarity, earthing, and that the supply is protected by an appropriate fuse or MCB

Answer

Only that it switches on

Answer

Only the plug shape

Answer

Electrical checks are not part of oil commissioning

Question 6

After completing combustion adjustments during commissioning, what should be recorded?

Accepted Answer

All flue gas readings: CO2, CO, O2, flue temperature, smoke number, and calculated efficiency

Answer

Only the customer's name

Answer

Only the boiler serial number

Answer

Only the date