QUESTION 3
(a)  A pool heater is to be located across a lawn. The gas supply pipe is to be laid under the lawn.
List EIGHT steps which are necessary to lay a polyethylene gas supply line to the swimming pool
heater from an existing installation.
1
2
3
4
5
6
7
8
(8 marks)

(b)  Give THREE reasons why a polyethylene (PE) pipe must be replaced by a metal pipe before an
unsleeved gas supply pipe rises above ground to connect to a gas appliance.
1
2
3
(3 marks)
Total 11 marks

Linkback: https://forum.plumbers.nz/gas-exam-2006/20/question-3/151/