21
Gas-tightness test :
a) Nitrogen or dry air at 1.5 times more pressure than gas operating pressure
P
G
b) Turn off the nitrogen or dry air supply and wait 15 minutes.
c) Check the pressure gauge after 2 hours (must stay fixed).
d) If not, detect leaks with a foaming product, fix them and repeat the
operation
Local regulation may apply.
First start-up
a) Preliminary checks :
*
check calibration of control unit fuses.
*
ground fault breaker operation ("TEST" button).
b) Initial settings :
*
main valve closed.
*
heaters valves open.
*
ground fault breaker set to "ON".
*
thermostat or programmable controller set to correct temperature setting
(see the technical instruction of the heating control module).
c) Ignition
*
open the main gas valve.
*
Put the ignition switch on "I / ON"
*
run a full sensor heating cycle and check :
.
ignition cycle length (45 seconds maximum).
.
ignition and shut-down of heaters according
to temperature settings.
Nitrogen or dry air
1,5 x
P
G
Pressure gauge
= open
= close
Solenoid valve
