Kronoterm WP4 LF-502, Instructions For Use And Installation

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ID.: 17-16-20-2979-10
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3.2018
least 5 °C higher than the temperature of the buffer tank for DHW, the external source is
available and is used for heating water. When
n -minutes elapse after turning on the external
source and its temperature is not higher than
5 °C, the electrical signal for turning on the
external source turns off for 3 x n -minutes; then the start-up process is repeated. If after three
successive trials the start-up of the external source is unsuccessful, the device displays error
E07, which has to be confirmed manually 7.3.1
) .
8.2.2.2 External source priority (solar collectors, wood furnace, fireplace ...)
The operation of the external source with external source priority is used in cases
when the external source is available only occasionally. These kinds of heating
methods are solar collectors, wood furnaces, fireplaces ... This operation mode's
regulation for heating DHW will use the device's generator in its basic operation
mode; if the temperature of the external source is high enough, the device's generator will
turn off and heating with external source will be activated. The water will be heated up to the
set temperature of the backup source (
chapter 0) .
When the water temperature in the device's buffer tank approaches the external source's
temperature (the difference in temperature must be 10 °C), the heating with external source
turns off, heating continues with the device's generator.
With this mode of heating using the external source, the use of a temperature sensor in the
external device is obligatory; if the temperature sensor is not connected, the regulation
displays error E02
(chapter 9.2). Connecting the sensor is described in chapter 5.9.2 .
In case the basic programme "Additional source
« is chosen, heating the water will only be
performed in case the external source will have enough heat and not otherwise.
8.3 Additional Operation Programmes
8.3.1 Backup Source
In case of a malfunction on the device's generator, the device automatically goes
into temporary operation in some cases
(»Anti-freeze programme« -
chapter 8.3.3 ).
Water is heated with the chosen additional source or internal electric heater up to
the temperature of the Anti-freeze programme
(35 °C). In case we want to have the
water heated up to the temperature defined by the basic programme despite the malfunction
in the generator, the backup source programme (electric heater) must be chosen manually.
This ensures temporary operation for the period until the arrival of a qualified service
company and the correction of the error.
8.3.2 Quick Water Heating
The quick water heating programme is intended for quick water heating with the
device generator and selected additional source (chapter 7.3.15.2) at the same
time. After reaching the set temperature, the quick heating programme turns off and
switches back to previously set operation mode.
Quick water heating programme may be stated manually (chapter 7.3.2), automatically
(chapter 7.3.12) or via external input (chapter 7.3.15.3).
Operation differs in regards to the set additional source (chapter 7.3.15.2):

Internal electric heater:
Water is heated by generator of the device and internal electric heater at the same time.

External source:
Water is heated by generator of the device and external source (if available) .

Internal electric external source:
Water is heated by generator of the device, internal electric heater and external source (if
available
)

setting: