Functional Electronic Controller (Fec); Image 14.2.1. Electronic Controller Buttons - VENCO VHR Series Installation, Operation, & Maintenance Instruction

SEC 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 can't interfere to the device from the front panel.
When the optional filter sensor detects the dirty filter, ''AL 03'' warning will be shown on screen. When this
warning is shown, the device will run properly, however the warning will be shown until the filters are cleaned.
Optionally, there is a system which prevents freezing plated heat recovery under low temperature. When icing
is determined in the plated heat exchanger, fresh air fan will stop and exhaust fan will work at maximum stage
for defrosting. After defrosting, the device will return to its normal working conditions. Under these
circumstances ''AL 07'' will be shown on screen. Commands from the front panel will not run.
Optionally, there is By-pass damper control. Damper will be automatically ON or OFF position depending on
the outdoor and room temperature information. If fan is selected in by MODE the damper is OFF.
Optionally, there is a control of air quality.
The fan in AUTO (FAN1, FAN2 or BOTH) changes fan speed according to the information from sensors.
14.2.

Functional Electronic Controller (FEC)

VENCO VHR type heat recovery unit control functions are;

Unit ON / OFF

FAN 1 ( Supply fan ) Speed control as 5 step and automatic

FAN 2 ( Exhaust fan) Speed control as 5 step and automatic

Heat, cool and fan mode
Button
2019.10

Image 14.2.1. Electronic Controller Buttons

Name
ON / OFF
MODE
FAN
Value Increase
Description
Unit will be ON or OFF.
Select Running Status
(Cooll , Heat or Fan
Fan1 and FAN2 stepped control
button.
Increases of the set value.
Increases the value of selected by
fan button area.
)
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