Operation Manual

16
Adr P6.2
MULTIPLE BOILER FORMAT (CASCADE) CONTROL PARAMETER
h.01-h.21
ERROR HISTORY DISPLAY
i.01-i.12
SERVICE AND DIAGNOSTIC INFORMATION
7. Boiler control and display of basic operational information
(more detailed user instructions)
♦ Heating water temperature display
After its connection to the power network, the display shows heating water temperature in °C which is
indicated by the pilot light °C above the O/I (MENU) button (3). If any other variable is displayed at the
moment (DHW temperature, output, error message etc.), pressing any of the buttons ▲ , ▼ (1) opens the
heating water temperature dialogue.
In the case of sensor defect, the numerical data become replaced with dashes: _ _ _ during disconnection or interruption of the sensor or
wiring, ¯ ¯ ¯ after short circuit on the sensor or wiring.
♦ Displaying and changing (setting) the desired temperature of heating water
If you press any of the ▲ , ▼ buttons (1) with the display showing the heating water temperature dialogue,
you can display its desired value. Slow flashing of the °C pilot light above the O/I (MENU) button (3) shows
the desired value. The currently valid desired temperature value according to the operational mode is displayed
(e.g. calculated by means of the integrated equitherm regulator or integrated room thermostat by way of a
communication line from the external regulator).
If you press any of the ▲ , ▼ buttons (1) with the display showing the desired heating water temperature,
you can set the desired value. Faster flashing of the °C pilot light above button 3 indicates the setting process.
The desired temperature value can be set by means of ▲ , ▼ buttons (1) within the range defined by TO_ a
TO¯ (P3.4 a P3.5) items in the service menu. The set value does not need to be confirmed. The mode of setting
the desired value terminates 15 seconds after any of the ▲ , ▼ buttons were last pressed (1).
The set desired value is valid in the following situations:
- rto heating mode is set to tEr (P3.1 = 1) (control performed by contact of the external room thermostat),
- rto heating mode is set to EtE (P3.1 = 2) (equitherm regulation) but the outdoor temperature sensor defect has been reported,
- rto heating mode is set to Prt (P3.1 = 3) (integrated room thermostat) but the room temperature sensor defect has been reported,
- rto heating mode is set to otP or ot- (P3.1 = 4 or 5) (external OpenTherm protocol regulation) but communication has failed.
PARAMETERS SET FOR THE MASTER CASCADE BOILER
PCC P7.1
NUMBER OF BOILERS IN THE CASCADE
dCC P7.2
SYSTEM CASCADE PUMP DECELERATION
dC1 P7.3
BOILER PUMP DECELERATION, IN THE CASCADE, AFTER ITS HEATING
OPERATION IS FINISHED
AFC P7.4
CASCADE SYSTEM ANTI-FREEZE PROTECTION FREEZE
PhC P7.5
MAXIMUM CASCADE OUTPUT WITHOUT MRC SIGNAL
P0C P7.6
MAXIMUM CASCADE OUTPUT AT DISCONNECTED CONTACTS OF RELAY 1
AND 2
P1C P7.7
MAXIMUM CASCADE OUTPUT AT CONNECTED CONTACT OF RELAY 1
P2C P7.8
MAXIMUM CASCADE OUTPUT AT CONNECTED CONTACT OF RELAY 2
P3C P7.9
MAXIMUM CASCADE OUTPUT AT CONNECTED CONTACTS OF RELAY 1
AND 2