Clas ONE - Installation Manual

SETTINGS - ADJUSTMENT -

SETTINGS - ADJUSTMENT - PROBLEM IDENTIFICATION MENUS menu sub-menu Parameter Description value default setting 2 4 BOILER PARAMETER - PART 2 2 4 3 Post-ventilation after heating request 0 = OFF 1 = ON 2 4 4 Time delay after heating temperature increase from 0 to 60 (minutes) This parameter allows the time delay to be set before automatic increase of the flow temperature calculated in increments of 4°C (max 12°C). If this parameter retains the value 00, this function is not active. 2 4 5 Circulation pump MAX speed from 75 to 100 2 4 6 Circulation pump MIN speed from 40 to 100 2 4 7 Device indicator for heating circuit pressure 0 = temperature sensor only 1 = pressure switch at minimum 2 = pressure sensor 0 16 Activated only with thermostat On/Off and heating control activated (parameter 421 - 521 - 621 = 01) 1 RESERVED FOR TECHNICAL ASSISTANCE Only if the PCB is changed 2 4 8 2 4 9 External temperatura correction from -3 to +3 (°C) 0 Only active with external sensor connected 2 5 DOMESTIC HOT WATER PARAMETER 2 5 0 COMFORT function CLAS ONE - CLAS NET ONE 0 = deactivated 1 = timed 2 = always on The appliance allows the hot water heating comfort to be increased via the “COMFORT” function. This function keeps the secondary exchanger temperature stable when the boiler is not in use. When the function is active, the display shows COMFORT Note: this function can be activated and deactivated by pressing the COMFORT button 2 5 1 Comfort Anti-cycling Time from 0 to 120 (minutes) 0 CLAS ONE - CLAS NET ONE 2 5 2 Hot water flow delay CLAS ONE - CLAS NET ONE 2 5 3 Extinction of the burner in D. H. W. CLAS ONE - CLAS NET ONE 2 5 4 Post-circulation and post-ventilation after a domestic hot water draw-off from 5 to 200 (0.5 to 20 seconds) 0 = anti-scale (stop at > 67°C) 1 = + 4°C /setting 0 = OFF 1 = ON 0 Timer = activated for 30 minutes after domestic hot water drawoff 5 Anti “water hammering” OFF = 3 minutes post-circulation and post-ventilation after domestic hot water drawoff if the boiler temperature measured requires it. ON = always on for 3 minutes post-circulation and post-ventilation after domestic hot water draw-off. 2 5 5 Domestic hot water timer from 0 to 30 (minutes) 0 2 5 7 2 5 8 2 6 BOILER MANUAL SETTINGS Only to test components 2 6 0 Manual mode activation 0 = OFF 0 1 = ON 2 6 1 Boiler pump control 0 = OFF 0 Set parameter 260=1 1 = ON 2 6 2 Fan control 0 = OFF 0 Set parameter 260=1 1 = ON 2 6 3 3 way valve control 0 = Sanitary 0 Set parameter 260=1 1 = Heating 2 6 4 2 7 TEST & UTILITIES 2 7 0 Test mode TEST+ = Max Heating power TEST+ = Max DHW power TEST+ = Minimum power. 0 0 activation can also be obtained by pressing the Reset button for 10 seconds. The function is deactivated after 30 minutes or by pressing Reset 42 /

SETTINGS - ADJUSTMENT - PROBLEM IDENTIFICATION MENUS menu sub-menu Parameter Description value default setting 2 7 1 Bleed cycle press OK button for 5 seconds see First Ignition parag. 2 8 RESET MENU’ 2 2 8 0 Automatically resetting to the default setting in menu 2 4 ZONE 1 PARAMETER 4 0 ZONE 1 TEMPERATURE SETTING 4 0 2 Heating fixed temperature setting “Heating fixed temp” Reset OK = yes ESC = no from 35 to 82 °C (high temperature - para. 420 =1) from 20 to 45 °C (high temperature - para. 420 =0) 4 2 ZONE 1 SETTING 4 2 0 Heating appliance temperature value setting 0 = from 20 to 45°C (low temperature) 1 = from 35 to 85°C (high temperature) 4 2 1 Basic heating control type selection type depending on the peripheral devices connected 0 = fixed flow temperature 1 = device On/Off 2 = room sensor 3 = external sensor only 4 = room sensor + external sensor To reset all default parameter settings, press the OK button 70 Activated only with temperature control and fixed temperature (see 421) 20 select in the appliance type base 1 To activate heating control, press the AUTO button. The display lights up the AUTO symbol 4 2 2 Slope from 0_2 to 0_8 (low temperature) from 1_0 to 3_5 1_5 (high temperature) °C 100 3.5 3.0 2.5 2.0 If the external sensor is used, the boiler calculates the 90 1.5 most suitable heating flow temperature taking the external 80 temperature and the type of 1.2 appliance into account. 70 1.0 The type of curve must be chosen according to the type of 60 appliance radiator and the heat losses present in the building. Flow Temperature 50 40 30 0.8 0.6 0.4 0.2 Low temperature High temperature °C Ambiente temperature setting value 25 20 15 10 5 0 -5 -10 -15 -20 °C External temperature 4 2 3 Parallel shift from - 7 to + 7 (low temperature) 0 from - 14 to + 14 (high temperature) To adapt the thermal curve to the appliance requirements, it is possible to perform a parallel shift of the curve in order to alter the calculated flow temperature and therefore the ambient temperature. By accessing this parameter or pressing the buttons 8 the curve can be shifted in a parallel manner as indicated in the figure shown below. The value is indicated on the display: - from -7 to +7 (low temperature) - from -14 to +14 (high temperature) Each step represents a flow temperature increase/decrease of 1°C in relation to the set-point value. / 43