6
Placing the heating system in operation
Logano G334X – 6 720 811 237 (2014/05)
21
Carrying out leak test
5. Open the gas shutoff valve.
6. Check the gas supply line to the gas valve for leaks with soap solution.
If no leaks are found, continue with step 8.
7. If leaks are detected, close the gas shutoff valve, seal the leaks, and
repeat step 6.
8. Close the gas shutoff valve. Remove the screw plug from the gas
supply pressure test point [2] on the gas valve in order to measure
the gas supply pressure. Install pressure test port and attach a
pressure gauge.
9. To measure the orifice pressure, remove the screw plug from the
orifice pressure test point [3] on the gas valve. Install pressure test
port and attach a pressure gauge.
Fig. 27 Gas valve
[1]
ON/OFF knob (ON position)
[2]
Screw plug for gas supply pressure test port
[3]
Screw plug for orifice pressure test port
10. Open the gas shutoff valve and measure the gas supply pressure to
the boiler. The supply pressure for natural gas must be between
7"...10.5" W.C. (17.4...26.2 mbar) and between 11"...13" W.C. for
propane gas (27.4...32.4 mbar). If the connection pressure is not in
this range with natural gas, contact your customer service technician
or gas utility company. Close the gas shutoff valve.
11. Follow the startup instructions in Section 6.3.
6.3
Start-up instructions
For your own safety, read the following information carefully before
commissioning:
NOTICE:
Risk of system damage due to short-circuits!
▶ Cover any hazardous locations prior to locating the
leaks.
▶ Do not spray leak detector onto conduits, plugs or
electrical connection cables or allow it to drip onto
them.
DANGER:
Risk of fatal injury from failure to observe the
commissioning instructions and subsequent incorrect
operation!
Risk of fire and explosion from failure to observe the
startup instructions.
▶ Read the startup instructions carefully before
commissioning.
DANGER:
Risk of fatal injury from gas explosion!
If you smell gas there is a danger of explosion.
▶ Close the gas shutoff valve.
▶ Open windows and doors.
▶ Do not operate any electrical switches or telephones.
▶ Do not use any sockets.
▶ Extinguish all open flames. No smoking. Do not use
lighters.
▶ Warn all occupants of the building that they need to
leave the building.
▶ Do not ring doorbells.
▶
From outside the building:
Notify the police and fire
department.
▶
From outside the building:
Call the gas supply
company and a trained and certified installer or
service company.
NOTICE:
System damage!
This appliance is fitted with an ignition module that
automatically starts the pilot burner.
▶ Do not attempt to light the ignition flame manually.
NOTICE:
System damage!
The following test must also be conducted at floor level,
because some gas types are heavier than air and may
accumulate at floor level.
▶ Check for odor of gas around the heating system.
DANGER:
Risk of system damage from fire or explosion!
Any attempt to use force or to repair the gas shutoff
valve may cause a fire or explosion.
▶ Operate the ON/OFF knob on the gas valve by hand
only.
▶ Do not use any tools.
▶ If the ON/OFF knob on the gas valve cannot be
operated by hand: Do not repair it.
▶ Contact a qualified and certified service company.
NOTICE:
Risk of system damage from corrosion!
▶ Do not use the appliance if any part of it has been
under water.
▶ Contact a qualified and certified service company.
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