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External fireplace switch
The fireplace function of the HRV can be controlled with the external fireplace switch. When a pulse from
the fireplace switch is received by the E6 input, HRV is switched to the fireplace mode for the defined time.
The fireplace mode will be switched off after the defined time or when it is manually turned off from the
control panel.
Remote control
When remote control is enabled, the fan speed and the supply air temperature is controlled through AL
points.
Remote control of fan speed
The speed of the unit is controlled with input B1(0-10V) as follows:
• 0 V - 2 V = Speed 0
• 2 V - 4 V = Speed 2 (UNOCCUPIED)
• 5 V - 7 V = Speed 3 (NORMAL)
• 7 V – 9 V = Speed 4 (BOOST)
• 9 V - 10 V = Speed 5 (COOLING)
The fan speed corresponding to the speed step is set via " Fan speed" sub-menu in the service menu
during initial installation and configuration phase.
Remote control of supply air temperature.
The supply air temperature is controlled with B2 input(0-10v) as follows:
• 0 V - 1,99 V = Controlled with the panel
• 2 V - 2,99 V = 13 C
• 3 V - 3,99 V = 14 C
• 4 V - 4,99 V = 15 C
• 5 V - 5,99 V = 16 C
• 6 V - 6,99 V = 17 C
• 7 V - 7,99 V = 18 C
• 8 V - 8,99 V = 19 C
• 9 V - 10 V = 20 C
When the remote control function is selected it overrides all the other speed controls
except
the
emergency stop function, the fireplace switch, compensated pressure and the summer cooling.
When the remote control function is selected the text " Remote control" is shown on the display. In this
mode speed control buttons will be blocked. Also the following functions will be blocked for change:
• the fan speeds;
• the time programs.
The Post-heating function can be controlled from the control panel if the remote control is not
connected to the B2 input or if the voltage value of signal incoming from the remote control to the
B2 input is below 2 Volts.
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