QUESTION 6
(a)   Describe the operation of a balanced flue fitted to a space heater.
           
(4 marks)

(b)   Describe the operation of a thermo-electric flame failure device fitted to a space-heating
appliance.

(4 marks)

c)   State FOUR likely causes of flames that are emerging from the top of the radiants of a
flued gas space heater. (Assume that the gas rate to the appliance is correctly set.)
1         
2         
3         
4
(4 marks)
Total 12 marks

Linkback: https://forum.plumbers.nz/gas-exam-june-2007/21/question-6/126/