CIB UNIGAS IDEA NG280, Руководство по установке, использованию и обслуживанию

Страница: 32 / 52

C.I.B. UNIGAS - M039132CD
32
As for the setting, refer to this correspondence table.
z
Berger STA12: On this actuator, the manual control of the air damper is not provided; the setting of the cams is carried out working
with a screwdriver on the
VS screw placed internally to the cam.. .
z
Siemens SQN72: a key is provided to move cams I and IV, the other cams can be moved by means of screws. On the Siemens
actuator the AUTO/MAN mode is provided (see picture).
5 go on adjusting air and gas flow rates: check, continuosly, the flue gas analisys, as to avoid combustion with little air; dose the air
according to the gas flow rate change following the steps quoted below;
6 drive the burner to high flame stage, by means fo the thermostat TAB (except single-stage burners) .
7 acting on the pressure stabiliser of the valves group, adjust the gas flow rate in the high
flame stage as to meet the values requested by the boiler/utilisation:
- Multibloc MB-DLE: The pressure governor is adjusted by operating the screw VS loca-
ted under the cover C . By screwing down the pressure is increased and by unscrewing it
is reduced. The valve is adjusted by means of the RP regulator after slackening the
locking screw VB by a number of turns. By unscrewing the regulator RP the valve opens,
screwing the valve closes. The pressure stabilizer is adjusted by operating the screw VS
located under the cover C . By screwing down the pressure is increased and by
unscrewing it is reduced.
Pressure governor is factory-set. The setting values must be locally adapted to
machine conditions. Important! Follow the instructions of the burner manufacturer!
To adjust the air flow rate , proceed as follows, according to the burner operation (single-
stage, double-stage, prograssive or fully-modulating).
z
Adjustements for single-stage burners
8 loosen VR screw (see picture)
9 move the ID index t or -, in order to increase or decrease the air flow-rate, according to the required combustion values;
10 fasten the VR screw again.
z
Adjustements for double-stage - burners mod.
LG/NG/NGX280
The comburent air adjustment must be performed by means of the actuator. The actuator rotation must be equal to 90° (next para-
graph). The air damper opening in the high flame stage is imposed by the adjusting cam (see picture).
11 To adjust the air flow rate, slacken the nut RA (see picture) and move the lever VRA through the slot as shown in see picture, to
increase or decrease the air rate, until the desired rate is obtained; lock then the nut RA in this position.
12 Drive the burner to the low flame operation, by the TAB boiler thermostat.
To eventually change the gas flow rate, set at step 6, slacken the screw V1 (see picture) and set the opening angle of the buttefly valve
Berger STA4.5B0.37/63N30L (LG/NG/NGX280) - Berger STA13B0.36/83N30L
(LG/NG/NGX350-400)
Siemens SQN72
BERGER STA Siemens SQN72
High flame position (set to 90°) I
I (red)
Low flame and ignition position IV
III (orange)
Stand-by position (set to 0°)
II
II (blue)
Not used III
IV (black)
LG/NG/NGX280 LG/NG/NGX350-400
I
II
III
IV
VS
IV
III
II
I
AUTO/MAN
C VS T(VR)
RP
VB
VSB
ID
VR
ID
VR