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For combustion settings, you can adjust the following :
1 - Pressure screw on the gas valve according to the type of gas and its stage (Min P. & Max P.)
2 - Air pressure settup on the heater control board (Max P. and Min P).
GAS HEATER
SETTING
Once the burner starts (thanks to ambient thermostat or manual
mode on control board), move on the display «Heater settings».
Press 5 seconds on « OK » and go to the display « Air pressure
Max P».
AIR PRESSURE
P. MAXI: 140 PA
On the display « Air Pressure P. MAXI » press « OK ». The
exhaust fan increases the speed to stabilize the air pressure to
the displayed set point. After a P. max pressure check on the
gas valve outlet, adjust the O2 and fumes values with ▼ and ▲
then validate on « OK » when the setting is correct.
The O2 value must be between 7.5% and 10 %.
AIR PRESSURE
P. MINI : 70 PA
Move to the display «Air pressure P. MINI.» then press on
« OK ». The exhaust fan reduces its speed to stabilize the air
pressure to the displayed set point. After a Min P pressure
check on the gas valve outlet, adjust the O2 and fumes values
with ▼ et ▲ then validate on « OK » when the setting is correct.
The O2 value must be between 7.5% and 10 %.
AIR PRESSURE
SAFETY : xx
Move to the display «Air pressure safety» to define the minimum
pressure which the control box must cut off because of air
combustion lack. Press « OK » and adjust the value with ▼ and
▲ then validate on « OK ».
More the value is high more the cut off will be low.
If «Air pressure P. MINI» = 70 and «Air safety» = 20
The air lack cut-off will be at 70-20 % = 56 Pa
1) Gas pressure tap for gas valve inlet
2) Gas pressure tap for gas valve outlet
3) Setting screw Max P (Screw for more pressure)
4) Setting screw Min P (Screw for more pressure)
For pressure settings, connect the gas manometer on
the gas pressure tap on the gas valve outlet (2)
Adjust the pressure on the adequate screw: Max P.
(screw 3) and Min P. (screw 4)
Be careful to re-screw the screws of pressure tap
EXHAUST FAN
START SPEED : 80
Move to the display «Exhaust fan start speed» to define the
speed of the extractor/exhaust fan at the start up. The factory
setting is 80 %. This value can be adjusted in precise cases,
check with the manufacturer if necessary.
OK
RESET
OK
RESET
OK
RESET
OK
RESET
OK
RESET
1
3
4
2
1
3
4
2
Top view
solenoid valve
Side view
solenoid valve
