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Installation
▶ Attach the air duct as shown in Fig. 4.
Key to figure 4:
[1]
Thermal insulation
[2]
Isolator
[3]
Air inlet grille
[4]
Test orifice
[5]
Built-in ducted indoor unit
[6]
Air Outlet
▶ Also insulate the pipes to prevent condensation.
3.4.2
Adjusting air inlet direction (from the rear to the
underside)
Carry out modification as shown in Fig. 19:
▶ Remove filter grille [3].
▶ Remove fan plate [1] and air inlet flange [2].
▶ Bend fan plate on the rear through 90°.
▶ Reinstall the fan plate in the position previously occupied by the air
inlet flange and vice-versa.
▶ Guide the filter grille [3] into the air inlet flange.
3.4.3
Installing the outside air duct
There is an outside air intake opening on the built-in ducted indoor unit
side which can be used if required ( Fig. 5, [2]).
No more than 5% of the air volumetric flow rate can be introduced via the
outside air intake opening.
External diameter of pipe Ø
[mm]
6.35 (1/4")
9.53 (3/8")
12.7 (1/2")
15.9 (5/8")
Table 76 Key data of pipe connections
3.5.2
Connecting condensate pipe to the indoor unit
Depending on the type of installation, the condensate pipe must either
be connected to the integrated condensate pump or the condensation
catch pan.
▶ Use PVCpipes with 32 mm inside diameter and 5-7 mm wall
thickness.
▶ Insulate drain pipe to prevent condensate formation.
▶ Connect drain pipe to indoor unit and secure connection with a hose
clip.
▶ Install drain pipe on slope ( Fig. 20). With a condensate pump
installed, the outlet of the drain pipe may be higher than the indoor
unit if the dimensions and wiring diagram are observed.
NOTICE
Danger due to water damage!
If the pipes are routed incorrectly, water may be discharged, or may flow
back into the indoor unit and cause the water level switch to malfunction.
54
Tightening torque [Nm]
Flared opening diameter
18-20
32-39
49-59
57-71
3.5
Pipework connection
3.5.1
Connecting refrigerant lines to the indoor and outdoor unit
CAUTION
Discharge of refrigerant due to leaky connections
Refrigerant may be discharged if pipe connections are incorrectly
installed. Reusable mechanical connections and flared connections are
not permitted indoors.
▶ Tighten flared connections only once.
▶ After releasing, always fabricate the flared connection again.
Copper pipes are available in metric and imperial sizes, the flare nut
thread is however the same. The flared fittings on the indoor and outdoor
unit are intended for imperial sizes.
▶ When using metric copper pipes, replace the flare nuts with nuts of a
suitable diameter ( Tab. 76).
▶ Determine pipe diameter and length ( Page 51).
▶ Cut the pipe to length using a pipe cutter ( Fig. 10).
▶ 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. 76 .
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. 76.
▶ Repeat the above steps for the other pipes.
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
16.2-16.5
19.2-19.7
▶ To prevent the pipes from sagging, install a support every 1–1.5 m.
▶ Route a drain pipe to the sewer via a siphon.
Testing the condensate pipe ensures that all connections are tight.
▶ Test the condensate pipe before closing the cover.
3.5.3
Testing the condensate pipe
if the condensate pump can only be tested once the electrical connection
has been established.
▶ Fill the condensation catch pan or water injection pipe with roughly
2 l of water.
▶ Switch on cooling mode. The drainage pump can be heard.
▶ Make sure that the condensate drains away properly.
▶ Check tightness of all connections.
Climate 5000 L • Climate 5000i U/L – 6721841493 (2023/05)
Pre-assembled flare nut
thread
3/8"
3/8"
5/8"
45°± 2
3/4"
R0.4~0.8
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