Fondital KR 55, Инструкция по установке и использованию

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10
Regulating the DHW temperature
If the water heater has an NTC probe (10 kΩ @ β=3435; refer to the water heater handbook), the temperature setting range is 35-65°C
(from the fully anticlockwise to the fully clockwise position on knob 3). During temperature setting, the
DHW symbol flashes on the display and the DHW temperature setting is displayed.
It is advisable to set a temperature of at least 40°C to allow the system to operate efficiently.
If the water heater has a thermostat probe, the DHW temperature must be set on the water heater (refer to water heater handbook). Knob
3 has no effect on this configuration, except to enable/disable the water heater as described above.
With the water heater enabled, it is always advisable to set knob 3 to at least 40°C.
When the DHW system requests water, the LCD shows the DHW symbol (stable) and the instant CH water temperature.
The burner symbol only shows when the burner is in operation.
1.4.4. ANTI-FREEZE function
The boiler is fitted with an anti-freeze protection system, which works when the following functions are
enabled: SUMMER, WINTER and ANTI-FREEZE.
When the CH temperature sensor measures 5°C, the boiler switches on and stays at the minimum heat output until it reaches 30°C or 15
minutes have elapsed. The pump continues to operate even if the boiler shuts down.
Anti-freeze function protects the boiler only, not the entire CH system. The CH system must be protected by other
methods, depending on the type of installation.
The CH system can be protected effectively against freezing by means of specific anti-freeze additives suitable for use in multi-metal
systems.
It is important to check the effectiveness of the anti-freeze product periodically.
Do not use car engine anti-freeze products.
If the boiler is connected to a separate water heater with an NTC probe (10 kΩ @ β=3435; refer to the water heater handbook), when the
probe measures a temperature of 5°C in the water heater, the boiler switches on and stays at the minimum heat output until it reaches
10°C or 15 minutes have elapsed. The pump continues to operate even if the boiler shuts down.
If the boiler is connected to a separate water heater with a thermostat, the anti-freeze function does not protect the water heater. In this
case, to protect the water heater, you need to turn knob 3 on the boiler to WINTER and set a DHW water temperature on the water hea-
ter higher than 0 °C.
If the boiler shuts down, the heater is not protected against freezing.
1.4.5. PUMP ANTI-SHUTDOWN function
If:
- the boiler remains inactive,
- selector 2 (Fig. 1) is NOT in the OFF position, or
- the boiler is still connected to the mains supply,
the pump activates briefly every 24 hours to keep it efficient.
1.4.6. Operation with Remote Control (optional)
The boiler can be connected to an (optional) remote control, which can be used for setting numerous parameters, including:
- boiler status
- ambient temperature
- CH water temperature
- DHW water temperature
- CH water temperature (only if connected to a separate water heater (optional) with an NTC temperature probe 10 kΩ @ ß=3435);
- switching on times for the CH system and water heater;
- boiler diagnostics display
- boiler reset
For instructions on how to connect the remote control, refer to § 3.2.13.