Eco Heating Systems CB 105 HW, Инструкция по установке, обслуживанию и эксплуатации

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E93.1803.901 HW 108
2. Frost protection on water heater
As last protection the controllers for the heaters can force themselves to burn.
If the water heater supply/Inlet temperature drops below 5 °C the water heater starts at minimum power and con-
tinues burning until the lowest of both supply and Inlet temperatures are above 15 °C.
Specific Parameters Level (Default) Value Range
Cascade frost protection
Temperature for frost protection
2: Installer 15 ºC (59 ºF) 10...30 ºC (50...86 ºF)
16.1.8 E
MERGENCY MODE
Managing water heater error
When the managing water heater is in error mode, the depending heaters can go into the "Emergency_Mode", if
enabled.
In emergency mode the system setpoint is set to the temperature of the Emergency_Setpoint and all cascaded
heaters start burning using this setpoint.
NOTE: the default setting is 50°C (122°F)! Make sure the right temperature is set.
Specific Parameters Level (Default) Value Range Parameter
Permit Emergency Mode Installer Yes Yes/No Module Cascade parameter 72
Emergency Setpoint Installer 50 ºC (122 ºF) 20 - 90 °C (68 - 194 °F) Module Cascade parameter 74
Dair active
Installer Yes Yes/No Heater parameter 139
For proper functioning of this emergency mode, the following settings are necessary in the managing water
heater(installer password required):
- Module Cascade parameter no. 72: "Permit_Emergency_Mode" has to be set on "yes".
- Module Cascade parameter no. 74: "Emergency_Setpoint" has to be set on the right temperature.
- Water heater parameter no. 139: "Dair active" has to be set on "No".
NOTE: do not de-activate the Dair function before commissioning the system and adjusting the heaters!
When the managing unit is reset from lockout state, the cascade controllers are re-initialized.
16.1.9 L
OSS OF CASCADE COMMUNICATION
The burner controller of the managing water heater is aware of how many dependents should be present in the
system. The total number of heaters is stored in the BCU (parameter 147). When powering on the system the
leading water heater has to detect all depending heaters within 60 seconds.
When not all dependent heaters are detected the control will show the CC_Loss_Communication warning. When
the communication with any of the depending heaters is lost during operation, the control will show the
CC_Loss_Communication warning after 60 seconds, which is purely informative and will not block the control.
16.1.10 M
ANAGING WATER HEATER ERROR
When the managing water heater is in error mode this boiler is not used anymore for the cascade system.
However depending on the error code, the pumps connected by the managing water heater still can be active for
the cascade system. When the managing unit is reset from lockout state, the cascade controllers are re-initialized.
Table 16-1