Placing the heating system in operation
11
29
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Logano G124X II/SP special gas-fired boiler • Issue 04/2005
Carrying out leak test
5.
Open gas shut-off in the gas line.
6.
Check the gas connection line to the gas valve for
leaks with soap solution. If no leaks are found,
continue with step 8. If any leaks are found, close
gas valve.
7.
Seal leaks and repeat step 6.
8.
Close main gas shut-off. Remove the screw plug for
the gas pressure measuring port on the gas valve.
Install pressure measuring nipple and attach a water
manometer to measure the gas supply pressure.
9.
Remove the screw plug for the manifold pressure
measuring port on the gas valve. Install pressure
measuring nipple and attach a manometer to
measure the manifold pressure.
10.
Open gas shut-off and measure the supply pressure
of the boiler. The supply pressure for natural gas
must be between 4.7" and 10.5" W.C. and between
11" and 13" W.C. for propane gas. If the supply
pressure for natural gas is not between 4.7" and
10.5" W.C and not between 11" and 13" W.C. for
propane gas, contact the service technician or the
gas complany. Close main gas valve.
11.
Always follow the start-up instructions on the next
page.
Fig. 26
Gas valve (G124X II left, G124X SP right)
1
ON/OFF button (at ON position switch)
2
Screw plug for gas supply pressure measuring port
3
Screw plug for manifold pressure measuring port
4
Pilot gas line connection
1
2
3
4
1
2
3
4
