Cuenod NC4 Instrucciones De Montaje, Servicio página 46

Start up
NC9 GX107/8
7
4
D2
10
15
p p
S G
mbar
p p
n min
20 17
25 20
37 25
46
106 Filter
119 Pressaure take offs
F4 Pressure switch
Y15 Safety valve
Y13 Nominal valve
104 Pressure controller
Important
All measurements are to be performed
using precision pressure gauges.
Ignition pressure setting: screw PS
Ignition pressure is set to 4mbar or
40daPa.This function ensures reduced
7
10
4
pressure on ignition for a few seconds,
15
increasing then to rated pressure PG.
The sector graduated from 4 to 15mbar
20
(i.e.40 to 150daPa), shows the settings
required for screw PS according to the
mbar
rated burner output.
Rated pressure setting: screw PG
The sector graduated from 4 to 20mbar
(i.e. 40 to 200daPa) shows the setting
required for screw PG.
Adjust according to rated burner output
(table page 50).
Important: pS must always be beneath
pG.
Gas pressure switch F4
Purpose
This device controls the minimum
distribution pressure (see table).
This step is performed after setting the
required power rating.
Adjustment
20
· Remove the cover.
To increase factory-set pressure:
· Turn disc E clockwise (+) and vice
versa.
Each turn alters the pressure value
by approximately 40daPa.
Allow for the differential (15 to
25daPa).
01/2005 - Art. Nr. 13 010 553B