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Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit Service Manual
04.2020 | Bosch Thermotechnology Corp.Data subject to change
4 Installation Details
4.1 Torque Requirements
Outer Diameter of Tube
mm (in.)
Tightening Torque
N•m (lb ft)
Max. Tightening
Torque N•m (lb ft)
Ø 6.35 (Ø 0.25”) 1,500 (11lb • ft) 1,600 (11.8lb • ft)
Ø 9.52 (Ø 0.375”) 2,500 (18.4lb • ft) 2,600 (19.18lb • ft)
Ø 12.7 ( Ø 0.5”) 3,500 (25.8lb • ft) 3,600 (26.55lb • ft)
Ø 16 ( Ø 0.63”) 4,500 (33.19lb • ft) 4,700 (34.67lb • ft)
Table 3
4.2 Connecting the Cables
The power cord should be selected according to the following speciÀ cations sheet.
f Cable type: SOOW type
Appliance Amps AWG Wire Size
10 18
13 16
18 14
25 12
30 10
Table 4
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.
4.3 Pipe Length and Elevation
Capacity
Pipe size
Liquid side
(in / mm)
Gas side
(in / mm)
9K 1/4" / Ɓ6.35 3/8" / Ɓ9.52
12K
1/4" / Ɓ6.35 1/2" / Ɓ12.7
18K
24K
3/8" / Ɓ9.52 5/8" / Ɓ15.9
30K
36K
48K
60K 3/8" / Ɓ9.52 3/4" / Ɓ19
Table 5
Capacity
Precharged
length
(ft / m)
Max Pipe
Length
(ft / m)
Max difference
in height
(ft / m)
Additional charge
for each ft
(oz)
9K
25 / 7.6
82 / 25 33 / 10
0.1612K
18K 98 / 30 66 / 20
24K
164 / 50 82 / 25
0.32
30K
36K
213 / 65 98 / 3048K
60K
Table 6
4.4 First Time Installation
4.4.1 Air Purging with Vacuum Pump
Figure 3
(Indoor Unit)
(Liquid Side)
(Gas Side)
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Manifold Valve
Compound Meter
Pressure
Gauge
Handle Lo
Handle Hi
-0.1MPa
Shut-Off Knob
Low Refrigerant
Manifold/Blue
Shut-Off Knob High
Charge/Refrigerant Hose
Vacuum
Pump
1. Completely tighten the Á are nuts of the indoor and outdoor units, conÀ 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. ConÀ rm that the gauge needle does not move
(approximately 5 minutes after turning off the vacuum pump).
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