Oilon Lampoassa RE 28-48, Installation And Operation Manual

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Connect the pump using the regular brine pump output (Q8) in any of the controllers
connected to the cascade.
● Select the controller to which the shared pump is connected on line 5803.
● By default, the setting for the line is 1 , which is the master controller’s device
address.
Enable the shared brine circuit pump by setting the option on line 5800 to
externally
brine
.
● Enable this option in all controllers that use the shared brine circuit pump, except for
the controller to which the shared pump is connected.
● As a rule, set the value on line 5800 to externally brine in all slave controllers, and
leave the value unchanged in the master controller.
The controllers that use the shared pump may also have the their own brine circuit
pump output Q8 configured. As usual, the output is activated when the compressor
circuit controlled by the relevant controller starts, even if the controller sends out a
request for the shared brine circuit pump to turn on via the bus. This means that if
required, the shared brine circuit pump can be used as an additional pump alongside
the compressor circuit’s own brine circuit pump.
6.4 Separate heat pump for DHW heating
The cascade can be laid out and programmed so that one compressor unit (one
condenser) is reserved for heating domestic hot water. In this configuration, the
selected heat pump’s automation system controls the change-over valve for the heat
pump’s flow, switching between domestic hot water heating and space heating as
necessary.
1. To activate this function, open the configuration menu in the selected heat pump’s
settings.
2. On line 5736, activate the option
DHW dedicated
.
3. Install sensor B10 to the flow line branch that leads to space heating.
In space heating, the selected heat pump will operate just like the other heat pumps in
the system (controlled by sensor B10).
Using all heat pumps for domestic hot water heating
If you wish to use all heat pumps for heating up domestic hot water, connect the
change-over valve to the master controller, and position all of the heat pumps
(condensers) upstream from the valve. This way, the system functions like an ordinary
single-pump system.
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