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3 System without system control (0020253231)
3.2
Preparing for installation
→ uniTOWER installation and maintenance instructions, from section 4.1 onwards
→ aroTHERM installation and maintenance instructions, from section 4.1 onwards
→ Accessory set-up instructions
Work step
1
Building
► Establishing a wall duct
2
Installation site for the outdoor unit, indoor
unit
► Defining the installation site
3
Outdoor unit
Condition: Depending on the installation
type/condition
► Establishing the strip foundations
► Mounting the wall bracket
► Procuring and installing other accessories
► Setting up/installing the product
4
Outdoor unit
► Installing the condensate discharge pipe
5
Indoor unit
► Setting up the product
Condition: Optional accessory
► Installing the installation set (hydraulics)
3.3
Installing the refrigerant circuit
→ aroTHERM installation and maintenance instructions, from section 5.1 onwards
→ uniTOWER installation and maintenance instructions, from section 5.1 onwards
Work step
6
Outdoor unit, indoor unit
► Preparing work on the refrigerant circuit
7
Outdoor unit, indoor unit
► Routing the refrigerant pipes
8
Outdoor unit, indoor unit
► Connecting the refrigerant pipes
9
Outdoor unit
► Checking the refrigerant circuit for tightness
8
Selected information/measures
► Comply with the specific conditions for the installation site and the installation
type.
Important planning dimensions:
–
Maximum height difference between the outdoor unit and the indoor unit:
10 m
–
Basic length of the refrigerant pipes: Minimum 3 m, maximum 25 m
–
Minimum clearances and installation clearances:
→ aroTHERM installation and maintenance instructions, from section 4.5
onwards
→ uniTOWER installation and maintenance instructions, from section 4.5
onwards
Validity: VWL 105/5 AS, VWL 125/5 AS outdoor unit
► If required, use the transport belts that are supplied.
Condition: Establishing the strip foundations
► Ensure that the condensate discharge can be positioned in the centre above
the downpipe.
► Ensure that condensate does not reach paths (ice formation).
► If required, separate the indoor unit into two modules.
► Remove and dispose of the carrying straps after the unit has been set up.
Selected information/measures
► Read all of the sections on working on the refrigerant circuit.
► Comply with the specified test pressures, waiting periods and instructions.
Tools and units:→ aroTHERM installation and maintenance instructions, from
section 5.1 onwards
► Ensure that there is sufficient vibration decoupling.
► Use a bending wrench and flexible springs in order to prevent kinks in the
pipeline.
► Keep the interior of the refrigerant pipes free from air humidity, dirt and
residue.
► Use a pipe cutter to cut the pipe to length.
► Always hold the pipe downwards during lengthening and deburring.
► Do not blow into the pipe (air humidity).
The outdoor unit is pre-filled with R410A refrigerant.
► Keep the isolation valves on the outdoor unit closed.
The indoor unit is filled with nitrogen.
► When unscrewing the flare nut, check whether you can hear the nitrogen
escaping.
► Only carry out the leak-tightness test on the refrigerant pipes using dry nitro-
gen.
–
Test pressure: 2.5 MPa (25 bar)
–
Waiting period: 10 mins
► Use a leak detection spray to check the connections.
System assistant 0020243831_00
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