Ochsner AIR 7, Руководство по эксплуатации и установке

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INSTALLATION | Appliance installation
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1 Quick-action air vent valve on the multifunctional as-
sembly (AIR 7, AIR 11 and AIR 18)
Material damage
»
Close the quick-action air vent valve again
after venting by pressing the red cover on the
valve.
10.3.4 Diaphragm expansion vessel (DEV)
► The indoor units for the AIR 7, AIR 11 and AIR 18
heat pumps are factory-fitted with a 24 l diaphragm
expansion vessel for the heat sink system.
► The factory-set pre-charge pressure on the DEV is
1.5 bar.
i
Information
The set charge pressure on the DEV must not be
taken as correct but must be adjusted for the par-
ticular system.
»
Set the charge pressure on the DEV accord-
ing to the height of your system and the filling
pressure of your heating system.
10.3.5 Flow metering
A flow meter is installed on the heat sink side inside the
indoor unit of your heat pump. This unit measures the flow
rate in your heating system. Too low a flow rate will lead to
a safety shutdown of the heat pump.
i
Information
The nominal flow rates for the heat sink system
(WNA) should be determined. Different flow rates
can lead to a reduction in the efficiency of the heat
pump.
10.3.6 Cooling version
When used for cooling, all system components (pipes,
fittings) must be insulated against condensation build-up
using appropriate insulating materials. This is particularly
important on the flow line from the heat pump to the heat
pump buffer tank.
»
Especially in relation to cooling mode and defrost
mode, ensure adequate sizing of the hydraulic safety
devices.
»
Allow for a pressure maintaining device with appro-
priate charge pressure, adjusted for the operating
conditions.
»
Ensure that in cooling mode the appliance casing on
the indoor unit is fully and correctly installed (see „As-
sembling the appliance casing“ on page 27).
10.3.7 Connecting the DHW
The indoor unit is fitted with a 3-way switching module for
switching between the DHW circuit and the heating circuit.
When configuring a DHW charging pump, take into account
the internal pressure differences in the plate heat exchang-
er (see „Specification“ on page 50).
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1 2
1 DHW flow
2 Heating water/DHW return
»
Make the appropriate connections from the DHW
flow and DHW return on the indoor unit to the DHW
cylinder.