DOL 278T
14
Technical Manual
5.6 Setup options at high power consumption
When the distance between the climate controller and wall fan or actuator is long, you can avoid long, thick low-
power cables by placing DOL 278 ON/OFF close to the power-consuming units.
An unlimited number of DOL 278 ON/OFF can be installed close to wall fans and actuators to supply 24 V DC.
DOL 278 ON/OFF at wall fan
DOL 278T at climate controller
24V / 4A, 8A or 10A supply for actuators
If fans and actuators use DOL 278T, the jumper for ‘Emergency opening ON/OFF’ must be set to ON on the re-
lays in the climate controller.
On additional I/O module type 15 all relays for ‘Emergency opening ON/OFF’ are set to ON from the factory.
If fans and actuators use DOL 278 ON/OFF, the jumper for ‘Emergency opening ON/OFF’ must be set to OFF
on the relays in the climate controller.
Use additional I/O module type 3 with jumper settings option when expanding number of relays in the climate
controller.
Summary of Contents for DOL 278T
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