160 Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Installation
161
Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Installation
6.7 Connecting the heating circuit
CAUTION
Danger of illnesses caused by colonies of bacteria in the water
The risk of colonies of bacteria, particularly of Legionella, in the water can be raised with an
open water circuit.
► Only deploy devices in a closed water system.
CAUTION
Danger of water pipes freezing in outside temperatures below 0 °C
If the heating circuit in the compact system is lled with water and the outside temperature falls
below 0 °C, the risk exists in the compact system that the water pipes may freeze. This can
cause a lot of damage to the device.
The client should therefore ensure the absence of frost by taking one of the following
measures:
► Operate the heating circuit using a food-safe antifreeze mixture (propylene glycol).
► Provide an additional cabinet heating in the compact device to prevent the heating
circuit from freezing up.
► Empty the heating circuit by using a built-in device (manually or automatically) before
freezing starts.
Danger of corrosion in open systems
In the case of open systems, oxygen entry can cause excessive corrosion of the pipelines and
subsequent problems in operation.
► Install devices only in closed systems without direct contact of the heating water to the
ambient air.
Danger of damage to the hydro-module and other components of the system due to im-
proper working methods when connecting the water heating circuit
To avoid damage to the water-side system components, observe the following instructions:
► Ensure that the components installed in the water circuit can withstand high operating
water pressures. Use only suitable sealants that are capable of withstanding the pres-
sure and the temperature of the system.
► Do not use worn out pipes.
► Lock line ends in bushing through walls so that dirt does not enter the lines.
► Flush the water-side pipeline before connecting the device to remove contaminants,
because impurities can damage device components.
Model Note Refrigerant - hot gas pipeline Coolant - uid pipeline
Diameter
mm (inches)
Torque
Nm
Diameter
mm (inches)
Torque
Nm
T-CAP
WH-ADC1216H6E5 + WH-UX09HE5
15.88 (5/8) 65 9.52 (3/8) 42
WH-ADC1216H6E5 + WH-UX12HE5
WH-ADC0916H9E8 + WH-UX09HE8
WH-ADC0916H9E8 + WH-UX12HE8
WH-ADC0916H9E8 + WH-UX16HE8
WH-ADC0916H9E8 + WH-UQ09HE8
WH-ADC0916H9E8 + WH-UQ12HE8
WH-ADC0916H9E8 + WH-UQ16HE8
WH-SXC09H3E5 + WH-UX09HE5
WH-SXC12H6E5 + WH-UX12HE5
WH-SXC09H3E8 + WH-UX09HE8
WH-SXC12H9E8 + WH-UX12HE8
WH-SXC16H9E8 + WH-UX16HE8
WH-SQC09H3E8 + WH-UQ09HE8
WH-SQC12H9E8 + WH-UQ12HE8
WH-SQC16H9E8 + WH-UQ16HE8
HT
WH-SHF09F3E5 + WH-UH09FE5
15.88 (5/8) 65 9.52 (3/8) 42
WH-SHF12F6E5 + WH-UH12FE5
WH-SHF09F3E8 + WH-UH09FE8
WH-SHF12F9E8 + WH-UH12FE8
1 In these indoor unit/outdoor unit combinations, the reducer piece, supplied as part of the scope of delivery of the
combination hydro-module, must be installed in the suction gas pipeline.
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