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7.6 - Operation of two units in master/slave mode
NOTE: This operating mode is not available for 30XA
1702 units.
The control of a master/slave assembly is in the entering
water and does not require any additional sensors (standard
configuration). It can also be located in the leaving water.
In this case two additional sensors must be added on the
common piping.
All parameters, required for the master/slave function must
be configured using the Service Configuration menu. All
remote controls of the master/slave assembly (start/stop,
set point, load shedding etc.) are controlled by the unit con-
figured as master and must only be applied to the master
unit.
Each unit controls its own water pump. If there is only one
common pump, in cases with variable flow, isolation valves
must be installed on each unit. They will be activated at the
opening and closing by the control of each heat pump (in
this case the valves are controlled using the dedicated water
pump outputs). See the 30XA Pro-Dialog Control IOM
for a more detailed explanation.
30Xa with configuration: leaving water control
legend
1
Master unit
2
Slave unit
Control boxes of the master and slave units
Water inlet
Water outlet
Water pumps for each unit (included as standard for units with hydronic
module)
Additional sensors for leaving water control, to be connected to channel 1 of
the slave boards of each master and slave unit
CCN communication bus
Connection of two additional sensors
1
2
Summary of Contents for Aqua Force 30XA
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