Fondital KBS 24 - 32, Инструкция по установке, эксплуатации и обслуживанию

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Instructions for the user
1.14.4 Freeze protection function
This boiler is fitted with a freeze protection system, which works when the following functions are activated: OFF/SUMMER/WINTER/CH ONLY.
DANGER
The freeze protection function only protects the boiler, not the whole heating system.
Ambient probes or a room thermostat must be used to provide freeze protection for the central heating system. Bear in mind,
however, that they are disabled when the boiler is in OFF operating mode.
To protect the system, as well as the boiler, set the boiler to WINTER operating mode.
The central heating system can be effectively protected against icing by using specific anti-freeze products that are suitable for multi-metal
systems.
WARNING
Do not use anti-freeze products for car engines, and check the effectiveness of the product used over time.
1.14.4.1 Ambient probe freeze protection function
If the boiler board is OFF, or WINTER, and the ambient probes detect a temperature below 5°C, a heating request to heat the probe-controlled
room is launched.
The heating function ends when the probe ambient temperature reading r6°C.
1.14.4.2 Flow freeze protection function
When the heating water temperature sensor detects a water temperature of +5 °C, the boiler switches on and stays on at its minimum heat
output until the temperature r30 °C or 15 minutes have elapsed.
The pump continues to operate even if the boiler shuts down.
1.14.4.3 DHW plate exchanger freeze protection function
When the DHW temperature sensor detects a water temperature of +5°C, the boiler switches on and stays on at its minimum heat output until
the DHW temperature r10°C or 15 minutes have elapsed (the deviating valve is in the DHW position).
During the DHW freeze protection operation the temperature detected by the flow probe is constantly checked, and in case it r60 °C
the burner is switched off.
The burner is switched on again if the operation request in anti-freeze mode is still present and the flow temperature is below +60°C.
The pump continues to operate even if the boiler shuts down.
1.14.4.4 Solar collector freeze protection function
Solar collector freeze protection function is enabled by setting parameter P24 = 1.
With this function, solar pump is activated as soon as solar collector probe detects a temperature of 4° C.