VENCO VHR Series, Installation, Operation, & Maintenance Instruction

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Table 14.1.1. Electronic Controller Buttons
Buttons Name Description
ON / OFF Unit will be ON or OFF.
MODE
Select Running Status
(Cool , Heat or Ventilation )
Fan Increase, decrease
selected fan’s stage value.
Value Increase
Increase of set value. Increases the value of selected by
fan button area.
Value Decrease
Decrease of set value. Decreases the value of selected
by fan button area.
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.
Electronical Controller Functions:
–
Device ON / OFF
–
Stage control of FAN1( fresh air fan) (OFF / 1 / 2 / 3 / 4 / 5 / AUTO)
–
Stage control of FAN2( exhaust fan) (OFF / 1 / 2 / 3 / 4 / 5 / AUTO)
–
Heat, cool and fan mode
Note: When electrical heater is working, FAN1 or the device is shutdown; FAN1 will work at stage 5 for 30
seconds to cool electrical heater. Electrical heater will not work when FAN1 is OFF.
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.