CIAT PRO-DIALOG+, Инструкция по эксплуатации

Страница: 23 / 28

The changeover between lead machine and follower may take
place when the assembly is started up, or even whilst running.
The running time balancing function is not active if it has not been
configured: in this case the lead machine is always the master
unit.
The lead machine will always be started first. When the lead ma
-
chine is at its full available capacity, start-up delay (configurable)
is initialised on the follower. When this delay has expired, and if
the error on the control point is greater than 1.7°C, the follower
unit is authorised to start and the pump is activated. The follower
will automatically use the master unit active setpoint. The lead
machine will be held at its full available capacity for as long as the
active capacity on the follower is not zero. When the follower unit
receives a command to stop, its evaporator water pump is turned
off with 20 seconds delay.
In the event of a communication fault between the two units,
each shall return to an autonomous operating mode until the fault
is cleared. If the master unit is halted due to an alarm, the slave
unit is authorised to start without prior conditions.
ATTENTION: For heat pumps operating in master/slave mode
and using an NRCP2 board or equipped with electric heater
stages control must be on the entering water temperature.
5 - PRO- CONTROL OPERATION
EN - 21 EREBA ACCESS