2019.10
20 / 31
Value Decrease
Decreases of the set value.
Decreases the value of selected by
fan button area.
Icons
Description
Heater and cooler step (ST 1 - ST 1+2)
Failure reporting (AL 01 - AL02 - AL 03)
Fresh air fan step (0-1-2-3-4-5-automatic)
Exhaust fan step (0-1-2-3-4-5-automatic)
Using the mode button, you can make the mode (Heat, cool and fan) selection. If the fan button is pressed,
makes of the fresh air fan speed control (1 / 2 / 3 / 4 / 5-automatic). When the fan button is second pressed,
makes of the exhaust fan speed control (1 / 2 / 3 / 4 / 5-automatic). If fans are running automatically, (
A
) icon
appears on the screen. Fans automatically run in heating and cooling mode. Air quality and CO
2
sensors have
to be connected for automatic run of the fans.
While in fan mode,
fans don’t automatically run. If the fans automatically run in different modes, when switched
to fan mode automatic run is stop. Steps manually set with controller.
Electrical heater only runs in the heat mode which runs automatically depends on the room temperature and
set point. When the heater runs in step one
“ST 1” icon appears on the screen. When the heater runs in step
two,
“ST 1+2” icon appears on the screen. Fresh air fan will run at step 5 for 30 seconds to cool electrical
heater. Electrical heater will not run when fresh air fan is off.
Optional air cooler battery only runs in cool mode which runs automatically depends on the room temperature
and set point.
Optional damper runs in heat and cool mode which runs automatically depends on the room temperature and
set point. If fan mode is active, damper is off.
FEC electronical controller can perform device ON / OFF from the dry contact information it gets from the
building automation system or similar system (VRV, VRF controller, timer etc.). By a dry contact on the relay
card connected to the BMS input; when dry contact is ON (short circuit) the device is activated and starts to
work in the position where previous closed. In this case, by using the front panel interfering device ON /OFF
equipment position change operations can be performed. When the dry contact is off, the device closes down
and you c
an’t interfere to the device from the front panel.
Optionally, there is a system which prevents plated heat recovery from freezing under low temperature. When
icing is determined in the plated heat exchanger, fresh air fan will stop and exhaust fan will run at maximum
Summary of Contents for VHR Series
Page 8: ...2019 10 8 31 Table 3 2 Dimensions for VHR and VHR EC Models...
Page 23: ...2019 10 23 31 17 APPENDIX 17 1 APPENDIX 1 Standard Controller SEC Electrical Wiring Diagram...
Page 24: ...2019 10 24 31 17 2 APPENDIX 2 Functional Controller FEC AC FAN Electrical Wiring Diagram...
Page 25: ...2019 10 25 31 17 3 APPENDIX 3 Functional Controller FEC EC FAN Electrical Wiring Diagram...
