Mark GS+ Livret Technique page 11

– A-2Y(L)2Y or A-2YF(L)2Y
4.0 Start-up/shutdown
4.1 General
Before being packed, each appliance is fully tested for safety and correct operation. Among other
checks, the gas pressure and CO
Never turn the adjusment screws without good cause. Do not forget to instruct the user on the
proper use and operation of the appliance and peripherals.
4.2 Checks
– Switch off the electricity supply at the main switch.
– Set the room thermostat to the minimum temperature.
– Open the gas stop cock, then carefully purge the gas pipes of air and check for leaks. Under no
circumstances use a naked flame! [27]
– Close the gas stop cock.
– Check whether the siphon has been correctly mounted and is protected against frost. Fill it
with water before starting up the appliance for the first time.
– In the case of the GS+, check whether the vanes in the air discharge port are set to the open
position (open to a min. of 45º).
– In the case of appliances with a centrifugal fan, check the external static system pressure, direction
of rotation of the fan, current draw and check the belt tension after 20 to 40 operating hours.
Adjust the tension regularly during the first year of operation [19].
– Switch on the electrical supply at the main switch and set the room thermostat to maximum
temperature. After the purge time has elapsed, the automatic ignition control will generate an
electric spark and the safety valve on the gas control unit will open. Because the gas stop clock is
closed, no flame will appear. The automatic ignition control will lock out after 4 attempts at
ignition, each lasting about 5 seconds. After waiting for approximately 30 seconds, the automatic
controller can be reset and the same cycle can be repeated.
– Open the gas stop cock, the appliance will now start up.
– Check the flame pattern at the main burner (clearly defined inner core, even combustion).
– In the case of appliances with an external fan, check that the maximum temperature increase of
30K is not exceeded.
4.3 Check that the room thermostat is functioning correctly
If the setting is lower than the ambient temperature, the burner will extinguish. At a setting higher
than the ambient temperature, the burner should ignite.
4.4 Check the pre-pressure
The gas pre-pressure must be measured at the gas unit when the appliance is in operation. The pre-
pressure is indicated on the appliance's type plate. To check, the volume of gas consumed [3] can be
measured via the gas meter (temporarily switch off all other appliances that consume gas).
4.5 Check appliance operation.
Finally, check that the operation of the appliance cannot be influenced by other appliances close to
it, localised air flows or corrosive or explosive vapours, etc.
4.6 Set the gas control unit [6]
Before being packed, each appliance is fully tested for safety and correct operation. The correct
Telephone ground cable, system in the outside area
are set. You must however always check the gas pre-pressure.
2
EN
11