7
Recommissioning the heating system
Logano plus GB312 - Technical specifications are subject to change without prior notice
43
7.2
Checking for leaks
Before commissioning, all new sections of gas piping
must be checked for external leaks.
V
Check the new section of piping for external leaks up
to the sealed joint where it directly joins the gas valve.
If the leak test identifies a leak, further leak tests must
be carried out on all joints using a foaming agent. The
agent must be approved for gas leak testing. Do not
apply the agent to electrical connecting leads.
V
Confirm completion of the leakage test in the commis-
sioning log.
7.3
Checking appliance equipment
Danger:
Risk of explosion
Leakage from the gas pipes and gas connec-
tions may cause an explosion.
V
Carry out a proper leakage test using soap
solution.
Danger:
Risk of system damage due to
short-circuits.
V
Before testing for leaks, cover the areas at
risk, e.g. the internal water pressure sen-
sor and the return sensor on the boiler re-
turn.
V
Do not spray leak detector onto cable
conduits, plugs or electrical connecting
leads or allow it to drip onto them.
Gas type
Factory settings
Natural gas
(gas type A)
Delivered factory-set ready for use. The
gas valve is set and sealed.
Calorific value for 60 °F, 30 ins Hg
Set to 1075 Btu/ft
3
Tab. 12 Factory settings
Caution:
Risk of boiler damage
The burner may only be used with the type of
gas fuel specified for it.
V
Check that the actual gas supplied match-
es the gas type specified on the rating
plate.
