Display Icons; Screens And Settings; De-Aeration Sequence - Slant/Fin VHG-100-CH Installation And Service Manual

D
ISPLAY ICONS
The following table gives a short description of the icons that can be visible on the main screen during operation:
Icon Description
Central Heating demand
Domestic Hot Water demand
Indicates that the appliance burner is ON
Cascade Emergency Mode active
Error notification
Table 11.2

Screens and settings

When the appliance is started the following screen is displayed:
This screen is active during power up and will remain active until communication with the Main Control (the AL-
BUS) has been established.
After communication has been established the following Status overview appears:
Heating Only boiler (VGH-CH)
100 °F
F
Figure 11.4
D -
E AERATION
The "De-Aeration" sequence is a safety function that starts at
every power ON of the boiler and is used to remove the air
from the heat-exchanger. The DAir sequence does not start
after a general reset (like the locking error reset or 24 hours
reset)
The display will show the following string during DAir
sequence:
• "Dair Running"
• "Dair Error Water Pressure"
The De-Air sequence can be cancelled by pressing and holding the ENTER-button on the display for 5 seconds.
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170 °F
S
EQUENCE
E93.1901EN032 Installation and Service Manual SlantFin VGH-CH / CO
Boiler Status
CH control state
(Central Heating controller
state)
0  Idle
1Request
2 Demand
3 Post circulation
4 Off
Table 11.1
Figure 11.3
Heating & DHW boiler (VGH-CO)
70° F
DHW Control
Figure 11.5
70° F
DHW Control
Figure 11.6
RT_Input
(Room thermostat open of
closed)
0=Open
1=Closed
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Enabled
DAir Running
Enabled
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