ACV Prestige 24 Solo Installer's Handbook page 15

ACVMAX DESCRIPTION AND OPERATION
CH Settings
Heating Settings
CH2 Max. Setpoint 60°C
Enabled
CH2 Min. Setpoint 27°C
Disabled
Warm Weather Shutdown O
Circulation Pump Perman. Disabled
CH Post Pump Time 5 min
Freeze Protection Enabled
Heating Settings
CH2 Min. Setpoint 27°C
Warm Weather Shutdown O
Circulation Pump Perman. Disabled
-30°C
CH Post Pump Time 5 min
Freeze Protection Enabled
Frost Protection Setpoint -30°C
Heating Settings
Warm Weather Shutdown O
Circulation Pump Perman. Disabled
CH Post Pump Time 5 min
0°C
Freeze Protection Enabled
Frost Protection Setpoint -30°C
Parallel Shift 0°C
Heating Settings
Circulation Pump Perman. Disabled
CH Post Pump Time 5 min
Freeze Protection Enabled
0 min.
Frost Protection Setpoint -30°C
Parallel Shift 0°C
CH Call Blocking 2 min
The Freeze Protection menu allows the feature to be enabled and disabled. The built-in frost protection mechanism activates the system pumps
Freeze Protection
as soon as the flow temperature [NTC1 probe] drops below 7°C. As soon as the flow temperature is at 5°C, the burner starts up until the flow tem-
perature rises above 15°C. The pumps continue to run for around 10 minutes.
Press the UP or DOWN buttons to select Enabled or Disabled then press the OK button to store the setting.
Enabled – The Frost Protection feature protects the installation from freezing at a predetermined system flow temperature.
•
Disabled – The Frost Protection feature is disabled. Only the pumps operate.
•
Default: Enabled
Frost Protection Setpoint allows to define the outside air temperature at which the anti-freeze function is activated (only available if an outdoor
Frost Protection
Setpoint
temperature sensor is connected). The pumps are activated when the outside temperature drops below the threshold defined in this menu.
-30°C
Press the LEFT or RIGHT buttons to adjust the Freeze temperature Setpoint then press the OK button to store the setting.
10°C
In order to enable the protection of the whole system against freezing, all the valves of the radiators and the convectors should be
completely open.
Default: -30°C
Parallel Shift Value
Parallel Shift allows the CH setpoint to be externally adjusted when a Constant option is chosen in Demand Type. When a Constant option
is chosen in Demand Type, continuous CH1 and CH2 heating calls are generated. Simultaneous CH1 and CH2 calls will result in the Appli-
0°C
ance operating at the highest CH1 or CH2 setpoint. The CH1 or CH2 Thermostat terminals with the highest setpoint will be used to adjust
the setpoint. If the Thermostat terminals with the highest setpoint are open, the CH setpoint will decrease by the Parallel Shift Value. If the
80°C
Thermostat terminals with the highest setpoint are closed, the CH setpoint will return to the highest CH1 or CH2 setpoint
Press the LEFT or RIGHT buttons to adjust the Parallel Shift Value then press the OK button to store the setting.
Default: 0°C
CH Call Blocking
CH Call Blocking sets the minimum time between burner firings for central heating calls. At the completion of a burner firing, the CH Call
Blocking time will begin. The burner will not fire again until after the CH Call Blocking time has elapsed. The CH Call Blocking time only
2 min.
prevents the burner from firing, the central heating circulators will respond to a central heating call. This blocking time has no affect on
domestic hot water calls. The CH Call Blocking feature prevents short cycling of the burner and extends the life of the burner components.
30 min.
Press the LEFT or RIGHT buttons to adjust the Parallel Shift Value then press the OK button to store the setting.
Default: 2 min.
The Installer's Handbook - ACVMax: A1004308 - 660Y2900 - Volume 1 • B
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