Ponast KP 21 - Fuel Bin Specifications; Installation Location and Principles; Boiler Room Placement Guidelines; Safe Distances and Materials

Automatic boiler for pellets – User manual
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7.1.7 Preferential SW Tank heating
- the mode is activated automatically when a signal of an engaged thermostat of a hot supply water reservoir is
received
- the boiler operates on a preset programme P6.
- SW Tank thermostat signal is accepted only between the time intervals preset in MENU 5, Time setup for hot
supply water heating (SW Tank active)
- The boiler will heat up the hot supply water reserve to the required temperature.
- During this time, the heat is not delivered into the heating system with the exception of the time stages, when
the boiler switches to the Stand by mode when the boiler water temperature limit is exceeded (Menu 2, chapter
5.3.2).
This state is indicated by a "SW Tank" script on the display.
7.1.8 Chimneyer mode
- this mode is switched on by the CHIMNEYER button, it serves for service measurements during periodical
checks of combustion products.
- When the button is pressed, the boiler starts to burn at the preset boiler output value set in the programme P7.
- It is possible to use the button only when the automatic modes AUTOx, MODx or SW Tank are engaged, does
not activate electric ignition process.
7.1.9 Manual control mode
enables control of individual elements when needed (according to the diagram). Used when putting the boiler into
operation or during failure conditions.
The elements are controlled by the control unit's keyboard (  → ENTER,  ∩ ESC, arrow keys ⇐ ⇑ ⇒ ⇓
) and the dialogue menu number 1 Direct control according to the diagram:
7.2 DESCRIPTION OF SAFETY ELEMENTS AND PRINCIPLES
Amount of fuel in the burner
- At every moment during boiler operation, there is a defined amount of fuel in the burner to the extent that it
eliminates a possibility of the boiler overheating and causing a hazardous condition (e.g. during electric power
supply shortage).
Emergency boiler thermostat
- prevents the boiler from overheating
- reacts to the boiler emergency temperature - 95°C
- when exceeded, the boiler is put out of operation (only the circulation pumps remain in operation), the ALARM
warning light is on, and the display shows:
STOP-TEMP. >95°C
- for further information see chapter 7.3.1. STOP CONDITION by overheating, emergency thermostat