Bosch Climate 7000i Notice D'installation page 65

▶ Use two wrenches when you install or dismantle the piping, a
common wrench and a torque wrench.
4
Fig. 2
[1] Normal wrench
[2] Torque wrench
[3] Pipe socket cap
[4] Pipe fittings
External diameter of
pipe Ø [mm]
6.35 (1/4")
9.53 (3/8")
12.7 (1/2")
15.9 (5/8")
19 (3.4")
Table 9 Key data of pipe connections
3.5.2 Connecting refrigerant lines to the outdoor unit
▶ Unscrew the cover from the packed valve on the side of the outdoor
unit.
▶ Remove protective caps from ends of valves.
▶ Align the flared pipe end with each valve, and tighten the flare nut as
tightly as possible by hand.
▶ Using a spanner, grip the body of the valve.
Do not grip the nut that seals the service valve.
▶ While firmly gripping the body of the valve, use a torque wrench to
tighten the flare nut according to the correct torque values.
▶ Loosen the flaring nut slightly, then tighten again.
▶ Repeat the steps 3 to 6 for the remaining pipes.
3.5.3 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. 14).
▶ Only route the condensate hose with a slope.
▶ Connect the drain hose, attaching the hose on the same side of the
piping to ensure proper drainage ( Fig. 12).
▶ Wrap the connection point firmly with Teflon tape to ensure a good
seal and to prevent leaks.
For the portion of the drain hose that will remain indoors:
▶ Wrap it with foam pipe insulation to prevent condensation.
▶ Remove the air filter and pour a small amount of water into the drain
pan to make sure that water flows from the unit smoothly.
Climate 7000i – 6721873506 (2024/04)
1
2
3
0010020833-002
Tightening torque [Nm] Flared opening diameter
18-20
32-39
49-59
57-71
67-101
▶ 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.
A minimum pipe run of 3 metres is required to minimise vibration &
excessive noise.
Flared pipe end
(A) [mm]
8.4-8.7
90°± 4
13.2-13.5
A
16.2-16.5
19.2-19.7
23.2-23.7
3.5.4 Air evacuation
Air and foreign matter in the refrigerant circuit can cause abnormal rises
in pressure, which can damage the air conditioner, reduce its efficiency,
and cause injury.
▶ Use a vacuum pump and manifold gauge to evacuate the refrigerant
circuit, removing any non-condensible gas and moisture from the
system.
Evacuation should be performed upon initial installation and when unit is
relocated.
Before performing the evacuation:
▶ Make sure the connective pipes between the indoor and outdoor
units are connected properly.
▶ Make sure all wiring is connected properly.
▶ Connect the charge hose of the manifold gauge to service port on the
outdoor unit's low pressure valve.
▶ Connect another charge hose from the manifold gauge to the vacuum
pump.
▶ Open the low pressure side of the manifold gauge. Keep the High
Pressure side closed.
▶ Turn on the vacuum pump to evacuate the system.
▶ Run the vacuum for at least 15 minutes, or until the compound meter
reads -76 cmHG (-10 Pa).
▶ Close the low pressure side of the manifold gauge, and turn off the
vacuum pump.
▶ Check whether the pressure is still the same after 5 minutes.
Pre-assembled flare nut
thread
3/8"
3/8"
5/8"
45°± 2
3/4"
R0.4~0.8
3/4"
Installation
65