About 24-Hour Ventilation; About The Ultra-Low Setting; About The Electrical Heater Operation; About External Linkage Input - Daikin VAM350J VEB Series User Reference Manual

17.5.7 About 24-hour ventilation

17.5.8 About the ultra-low setting

17.5.9 About the electrical heater operation

17.5.10 About external linkage input

17.5.11 About filter contamination check

VAM350~2000J*VEB*
Heat reclaim ventilation unit
4P664012-1A – 2024.01
INFORMATION
This function is NOT possible when the heat reclaim ventilation unit is NOT linked to
an air conditioner.
When the controller is switched off, 24-hour ventilation starts. Setting 19(29)‑4
enables this function and sets the fan speed.
INFORMATION
For EKVDX combinations, this operation is disabled. Default setting is –4–01 and
should not be changed.
If the amount of ventilation is too high, even in low mode, it is possible to have the
fans work intermittently or at a very low speed with setting 19(29)‑1.
INFORMATION
This function is NOT possible when there is a direct duct connection.
INFORMATION
For EKVDX combinations, this operation is disabled. Default setting is –1–01 and
should not be changed.
If the electrical heater is used, set setting 19(29)‑8 to 03 or 04 and setting 18(28)‑9
to 01. For more details, see the PCB heater manual.
WARNING
When combined with an EKVDX unit, do NOT install operating ignition sources
(example: open flames, an operating gas appliance or an operating electric heater) in
the duct work.
Terminals J2 and JC function as contact signal input to switch the heat reclaim
ventilation unit on or off.
INFORMATION
For EKVDX combinations, J2/JC function cannot be used. EKVDX is provided with
T1T2 external input to replace these functions.
The filter contamination check can ONLY be done in the same conditions as
19(29)‑0‑04 or 05. E.g., if the unit is operating in bypass mode, filter contamination
CANNOT be checked. In this case, a timer counts the hours. After a target value is
reached, the conditions are changed for a short time to be able to perform a filter
contamination check.
17 Configuration
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Installer and user reference guide
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