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Bosch Climate 5000 AA Series Split Type Ductless Air Conditioner / Heat Pump Service Manual
02.2018 | Bosch Thermotechnology Corp.
Data subject to change
5 Wiring Diagram
Refer to wiring diagram in the installation manual (IOM) or on the unit.
6 Installation Details
6.1 Wrench torque sheet for installation
Outside diameter Torque Additional tightening torque
Ф6.35mm 1/4in 1500N.cm(153kgf.cm) 1600N.cm(163kgf.cm)
Ф9.52mm 3/8in 2500N.cm(255kgf.cm) 2600N.cm(265kgf.cm)
Ф12.7mm 1/2in 3500N.cm(357kgf.cm) 3600N.cm(367kgf.cm)
Ф15.9mm 5/8in 4500N.cm(459kgf.cm) 4700N.cm(479kgf.cm)
Ф19mm 3/4in 6500N.cm(663kgf.cm) 6700N.cm(683kgf.cm)
Table 4
6.2 Connecting the cables
The power cord should be selected according to the following specifi cations sheet.
Appliance Amps AWG Wire Size
10 18
13 16
18 14
25 12
30 10
Table 5
The cable size and the current of the fuse or switch are determined by the maximum
current indicated on the nameplate which is located on the side panel of the
unit. Please refer to the nameplate before selecting the cable, fuse and switch.
Recommended: A means of disconnecting the power, should be within 10 feet of the
outdoor unit.
6.3 Pipe length and the elevation
Models
Pipe size
Gas Liquid
9K 3/8in (Ф9.52mm) 1/4in (Ф6.35mm)
12K,18K 1/2in (Ф12.7mm) 1/4in (Ф6.35mm)
24K 5/8in (Ф15.9mm) 3/8in (Ф9.52mm)
Table 6
Models
Standard
length
Max.
Elevation
Max. Length
A
Additional
refrigerant
9K,12K
7.5m
(24.6ft)
10m (32.8ft) 25m (82.0ft)
15g/m
(0.16oz/ft)
18K
7.5m
(24.6ft)
20m (65.6ft) 30m (98.4ft)
15g/m
(0.16oz/ft)
24K
7.5m
(24.6ft)
25m (82.0ft) 50m (164ft)
30g/m
(0.32oz/ft)
Table 7
6.4 First time installation
Air purging with vacuum pump
Figure 9
Liquid service valve
Gas service valve
Shut-O Knob Low
Refrigerant Manifold,
Blue Hose
Shut-O Knob High
Charge/Refrigerant
Hose
1. Completely tighten the fl are nuts of the indoor and outdoor units, confi rm
that both the liquid service and gas service valves are set to the closed
position.
2. Connect the refrigerant manifold, blue hose with the push pin of shut-off
knob of the low side to the gas service valve port.
3. Connect the refrigerant manifold, yellow hose to the shut-off high side
connection to the vacuum pump.
4. Fully open the shut-off knob low side of the manifold valve.
5. Operate the vacuum pump to evacuate.
6. Perform evacuation for 30 minutes and check whether the refrigeration
low side pressure gauge indicates -0.1Mpa(14.5Psi). If the meter does not
indicate -0.1Mpa(14.5Psi) after evacuating for 30 minutes, it should be
evacuated 20 minutes more. If the pressure can’t achieve -0.1Mpa(14.5Psi)
after evacuating 50 minutes, please check if there are some leakage
points. Fully close the shut-off knob low side of the manifold and stop the
operation of the vacuum pump. Confi rm that the gauge needle does not move
(approximately 5 minutes after turning off the vacuum pump).
7. Make sure the pressure display in the pressure indicator is a little higher than
the atmospheric pressure. Then remove the charge hose from the gas service
valve.
8. Fully open the liquid service valve and gas service valve and securely tighten
the cap of the gas service valve. System is now evacuated and charged.
(Ensure that the unit is charged per the defi ned specifi cations).
Gas leak check (Use soap bubble method):
Apply soapy water or a liquid neutral detergent on the indoor unit
connections or outdoor unit connections by a soft brush to check for
leakage of the connecting points of the piping. If bubbles come out, the
pipes are leaking.
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