Bosch Climate 3000i CL3000iU W 26 E Manual De Instalación página 52

Installation
The pipe fittings on the indoor unit are generally located behind the
indoor unit. We recommend extending the pipes before mounting the
indoor unit.
▶ Establish pipe connections as described in Chapter 3.4.1.
▶ Bend the piping in the required direction if necessary, and knock out
an opening on the side of the indoor unit ( Fig. 12).
▶ Route the piping through the wall and attach the indoor unit to the
mounting plate ( Fig. 13).
▶ Fold up the top cover and remove one of the two filter elements
( Fig. 14).
▶ Insert the filter which is included in the scope of delivery into the filter
element, and mount the filter element again.
If it is necessary to take the indoor unit off the mounting plate:
▶ Pull the underside of the casing down in the area of the two recesses
and pull the indoor unit forwards ( Fig. 15).
3.3.2 Installing the outdoor unit
▶ Place the box so it is facing upwards.
▶ Cut and remove the packing straps.
▶ Pull the box up and off and remove the packaging.
▶ Prepare and mount a floor or wall mounting bracket, depending on
the type of installation.
▶ Mount or hang the outdoor unit using the anti-vibration coupling for
the feet which is supplied with the unit or is provided on site.
▶ When installing on the floor or wall mounting bracket, attach the
supplied drainage elbow and gasket ( Fig. 16).
▶ Remove the cover for the pipe connections ( Fig. 17).
▶ Establish pipe connections as described in Chapter 3.4.1.
▶ Mount the cover for the pipe connections again.
External diameter of
pipe Ø [mm]
6.35 (1/4")
9.53 (3/8")
12.7 (1/2")
15.9 (5/8")
Table 67 Key data of pipe connections
3.4.2 Connecting condensate pipe to the indoor unit
The condensate drain 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. 10).
▶ 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. 18, [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 operating pressure (
page 56).
▶ Check whether the pressure is still the same after 10 minutes.
52
Tightening torque [Nm] Flared opening diameter
18-20
32-39
49-59
57-71
3.4 Pipework connection
3.4.1 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 connectors and flared joints are not
allowed indoors.
▶ Tighten flared connections only once.
▶ Always make new flared connections after loosening.
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. 67).
▶ Determine pipe diameter and length ( Page 50).
▶ Cut the pipe to length using a pipe cutter ( Fig. 11).
▶ 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. 67.
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. 67.
▶ Repeat the above steps for the second pipe.
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
▶ Discharge the nitrogen until the maximum operating 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. 18, [5]) until
the pressure is approx. −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.
Pre-assembled flare nut
thread
3/8"
3/8"
5/8"
45°± 2
3/4"
R0.4~0.8
Climate 3000i – 6721823680 (2023/01)