Nibe AMB 30, Installer Manual

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Hybrid operation mode
In hybrid operation AMB 30 uses the outdoor air in
combination with ground /rock collector as the heat
source. Outgoing brine from the F1345 is connected
directly to the air module and on via a reversing valve
to the ground/rock collector.
Outdoor air operation only
When the ambient temperature is higher than 12 °C
(selectable) the control switches the reversing valves
to operation with only AMB 30. Above this ambient
temperature the brine temperature is more effective
from the AMB 30 than the ground/rock collector.
M
The brine, heating medium and domestic hot water side must
be fitted with the necessary safety equipment in accordance with
the applicable regulations.
Ground/rock collector operation only
When the ambient temperature falls the temperature
difference between outdoor air and the brine is re-
duced. At a set min. difference the control switches to
operation with only ground/rock collector.
In this mode AMB 30 cannot contribute to increasing
the brine temperature. It is more efficient for the unit
to use just the ground/rock collector.
M
The brine, heating medium and domestic hot water side must
be fitted with the necessary safety equipment in accordance with
the applicable regulations.
Hybrid operation
When the outdoor air temperature is between approx.0
and 12°C the controls switches the reversing valves to
operation with both AMB 30 and ground/rock collector
(hybrid operation). At these temperatures the heat
pump can use both the ground/rock collector and AMB
30 to supply the energy as long as the ambient temper-
ature is sufficiently much warmer than the brine tem-
perature. This operating mode increases the unit’s effi-
ciency and uses both the ground/rock collector and
AMB 30 in the best way.
M
The brine, heating medium and domestic hot water side must
be fitted with the necessary safety equipment in accordance with
the applicable regulations.
13 Chapter 4 | Pipe connections AMB 30