Menus And Parameters; General; Circulator Start Exercise Every 24 Hours; Frost Protection - Slant/Fin VGH-299-CH Installation And Service Manual

High efficiency condensing gas boiler
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To remove the message "Service is required": menu/ Information/ Service/ "Reset service reminder".
Enter the installer password, the "Reset service reminder" can be set to "YES" for resetting the service reminder.
The overdue time is recorded in the service history.
12.5.3 M
'
ENU
S AND PARAMETERS
Service status information can be viewed: Menu/ Information/ Service.
Here the installer can also reset the Service reminder (accessible at installer level).
(Sub) Menu item
Service history
Burn hours since last service
Burn hours till service
Reset service reminder
Table 12. 6

General

The boiler controller is designed to function as a standalone control unit for intermittent operation on heating
appliances with a premix (modulating) burner and a pneumatic air-gas system.
Fuses
Flame establishing period
Safety time
Ignition attempts
Pre-purge time
Pre-ignition time
Flame failure response time
Flame-current
Cable length AL-BUS
1
This consists the total length of the cable, not the length between two boilers. The length differs with the diameter of the cable.
1)
Table 12. 7
12.6.1
C
IRCULATOR START EXERCISE EVERY
To protect the circulator from getting stuck at a certain position it is forced to run for 10 seconds every 24 hours.
This is done only for the boiler loop circulator at the start-up of the board.
12.6.2
F
ROST PROTECTION
The Frost protection function protects the boiler and boiler loop from freezing.
The T_Supply, T_Supply_2 and T_Return sensors are checked for generating a Frost protection demand.
• When any of the sensors drop below FP_Start_Circulator the boiler loop circulator is switched ON for CH.
• When any of the sensors drop below FP_Start_Burn the boiler is fired.
• When all of the sensors measure above FP_Stop the Frost protection demand is ended.
When the demand for Frost protection is ended the circulators will post-circulate for CH_Post_Circulator_Period.
Parameters are factory set
Description
View the Service history (log). For each service moment the Service overdue counter is stored. When the
overdue counter is 0 hrs, it means service was done before the Service reminder was active. The log is ordered
so the most recent service moment is shown first (on top of the list).
Shows the number of burn hours since the last service moment.
Shows the number of burn hours until service is required.
Reset the Service reminder (and store Service overdue counter in the service history).
Installer must enter the installer password first before it can be reset.
Mains input
Minimum
Start-detection
24
HOURS
E93.1601EN032.C VGH installation manual
1 x 5AT, 120V
2 seconds
5 seconds
5
≥ 2...60 seconds (not safety critical)
2 seconds (not safety critical)
< 1.0 second
1.0 μA
1.5 μA
AWG (mm
2
)
Cable length (m)
23
(0.25)
328.1 ft (100)
20
(0.5)
656.2 ft (200)
18
(0.75)
984.3 ft (300)
17
(1.0)
1312.3 ft ( 400)
15
(1.5)
1968.5 ft (600)
 
69

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