Installation, user and maintenance manual
– AY Condensing line, AY series
67
Figure 6�2 – Gas valve
Gas valve Honeywell VK 4115V
LEGEND
A
Cap
B
Torx wrench TX40
C
CO2 adjuster screw
D
Mains gas pressure fitting
Table 6�1 – Gas type identification values
TYPE OF GAS
G20
GPL
G30
G31
Code stamped on
nozzle
176
177
177
177
Nozzle diameter
6.20
4.45
4.45
4.45
Parameter value
"45"
0
1
1
0
CO2 content
9,4%
11.4%
12,4
10.6
Delta CO2
between Max and
Min potential
0,5
0,9
0,9
0,4
Reference values for conversion to other types of gas.
In the first start-up stage, on the display of the controller of the appliance (and/or on
the display of the DDC, if connected), an operating code might be visualized. If the
operating code is generated by the controller of the appliance, see the list of codes in
Table 8.1 TABLE OF OPERATING CODES generated by the controller (firmware version
3.100)
→
77; if the operating code is generated by the DDC, see the list of codes given
in the "installation technician manual - manual 1" of the DDC (supplied with the unit).
Successful first start-up ONLY certifies the correct operation of the appliance (and
of the DDC, if connected). It does NOT certify that the plant complies with current
regulations.
OPERATIONS IN MENU 2
•
FORCING TO MINIMUM POWER (ACTION "23"):
You will need: the display showing “2.20” (see point “3” of procedure "HOW TO ACCESS
THE MENUS" - Paragraph 3.2 ON-BOARD ELECTRONICS
→
18).
Turn the knob clockwise until the display shows parameter "2.23".
1.
Press the knob to display the flashing force to minimum power request: "P_L1".
2.
