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Installation
▶ Determine pipe diameter and length ( Page 42).
▶ Cut the pipe to length using a pipe cutter ( Fig. 7).
▶ Deburr the inside of the pipe at both ends and tap to remove swarf.
▶ Insert the nut onto the pipe.
▶ Widen the pipe using a flaring tool to the size indicated in the tab. 6.
It must be possible to slide the nut up to the edge but not beyond it.
▶ Connect the pipe and tighten the screw fitting to the torque specified
in the tab. 6.
▶ Repeat the above steps for the second pipe.
External diameter of
pipe Ø [mm]
6.35 (1/4")
9.53 (3/8")
Table 6 Key data of pipe connections
3.4.2
Connect condensate pipe to the indoor unit
The condensation catch pan of the indoor unit has two connections.
A condensate hose and bung are mounted on these connections at the
factory and can be replaced ( Fig. 6).
▶ Only route the condensate hose with a slope.
3.4.3
Checking tightness and filling the system
Checking tightness
Observe the national and local regulations when carrying out the
tightness test.
▶ Remove the caps on the three valves ( Fig. 14, [1], [2] and [3]).
▶ Connect the Schrader opener [6] and pressure gauge [4] to the
Schrader valve [1].
▶ Screw in the Schrader opener and open the Schrader valve [1].
▶ Leave valves [2] and [3] closed and fill the system with nitrogen until
the pressure is 10 % above the maximum design pressure of 42.5 bar.
▶ Check whether the pressure is still the same after 10 minutes.
▶ Admit nitrogen until the design pressure is reached.
▶ Check whether the pressure is still the same after at least 1 hour.
▶ Discharge nitrogen.
Filling the system
NOTICE
Malfunction due to incorrect refrigerant
The outdoor unit is filled with R32 refrigerant at the factory.
▶ If refrigerant needs to be topped up, only use the same refrigerant.
Do not mix refrigerant types.
▶ Evacuate and dry system with a vacuum pump ( Fig. 14, [5])
for at least 30 minutes until the pressure is roughly −1 bar
(or approx. 500 microns).
▶ Open the valve at the top [3] (liquid side).
▶ Use a pressure gauge [4] to check whether the flow is unobstructed.
▶ Open valve at bottom [2] (gas side).
The refrigerant is distributed round the system.
▶ Afterwards, check the pressure ratios.
▶ Unscrew the Schrader opener [6] and close the Schrader valve [1].
▶ Remove the vacuum pump, pressure gauge and Schrader opener.
▶ Reattach the valve caps.
▶ Reattach the cover for pipe connections to the outdoor unit.
44
Tightening torque [Nm]
Flared opening diameter
18-20
32-39
NOTICE
Reduced efficiency due to heat transfer between refrigerant pipes
▶ Thermally insulate the refrigerant lines separately.
▶ Fit the insulation on the pipes and secure.
Flared pipe end
(A) [mm]
8.4-8.7
90°± 4
13.2-13.5
A
3.5
Electrical connection
3.5.1
General notes
WARNING
Risk to life from electric shock!
Touching live electrical parts can cause an electric shock.
▶ Before working on electrical parts, disconnect all phases of the
power supply (fuse/circuit breaker) and lock the isolator switch to
prevent unintentional reconnection.
▶ Work on the electrical system must only be carried out by a qualified
electrician.
▶ Observe safety measures according to national and international
regulations.
▶ If there is a safety issue with the power supply or if there is a short
circuit during installation, inform the customer in written form and do
not install the unit until the issue is resolved.
▶ All electrical connections must be made in accordance with the
electrical connection diagram.
▶ Only strip cable insulation with the correct tools.
▶ Do not connect any additional loads to the mains power supply
of the unit.
▶ Do not mix up live and neutral wires. This can lead to malfunctions.
▶ If the mains power supply is fixed, install an overvoltage protector
and isolator which is designed for 1.5 times the maximum power
consumption of the unit.
3.5.2
Connecting the indoor unit
The indoor unit is connected to the outdoor unit using a 4-wire
communication cable of the type H07RN-F. The conductor cross-section
of the communication cable should be at least 1.5 mm
NOTICE
Material damage can be caused by connecting the indoor unit
incorrectly
Voltage is supplied to the indoor unit via the outdoor unit.
▶ Only connect the indoor unit to the outdoor unit.
Climate Class 6000i/8000i – 6721831489 (2022/11)
Pre-assembled flare nut
thread
1/4"
3/8"
45°± 2
R0.4~0.8
2
.
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