Calibration Of The Maximum Gas Pressure Switch (Pgmax) (Optional); Servomotor Calibration Siemens Sqn70.254A20 - FBR GAS XP60/2CE EVO Manual De Instalación, Uso Y Mantenimiento

GB
CALIBRATION OF THE MAXIMUM GAS PRESSURE SWITCH (PG
The maximum gas pressure switch (PGmax) is an optional equipment for the model GAS XP60/2CE EVO
Fig. 12 1-Cover screw 2-Regulation collar 3-Regulation indicator
4-Pressure control connection of the pressure switch

SERVOMOTOR CALIBRATION SIEMENS SQN70.254A20

1) Index of air shutter opening (0° - 90°)
2) Release pivot
3) Push to release
4) V2 consent (2nd stage valve)
GAS XP60/2CE EVO
STARTING AND REGULATION
) (OPTIONAL)
MAX
It is connected in series with the flame sensor and it
interrupts the current when the gas pressure is higher
then the set point (set the value 20% higher then the
operation gas pressure).
The maximum gas pressure switch is mounted on the
burner in proximity of the connection flange of the gas
train.
For setting proceed like follows:
a) Bring the burner up to the maximum power (relative to
the heat generator).
b) Measure the pressure on the outlet of the pressure
switch.
c) Turn the collar of the pressure switch regulation slowly
until you obtain the lock-out of the burner.
d) Increase the pressure (set point) of intervention the
20% turning the regulation collar. Repeat the cycle of the
burner again and in case of lock-out increase the set point
for the pressure of intervention.
Fig. 13
SIEMENS SQN70.254A20
5) 1st stage calibration
6) Closed
7) 2nd stage calibration (MAX)
071011_2_A
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