Installation Details; Torque Requirements; Connecting The Cables; Pipe Length And Elevation - Bosch Climate 5000 Series Service Manual

8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit

4 Installation Details

4.1 Torque Requirements

Outer Diameter of Tube Tightening Torque
mm (in.)
Ø 6.35 (Ø 0.25") 1,500 (11lb • ft)
Ø 9.52 (Ø 0.375") 2,500 (18.4lb • ft)
Ø 12.7 ( Ø 0.5") 3,500 (25.8lb • ft)
Ø 16 ( Ø 0.63") 4,500 (33.19lb • ft)
Table 3

4.2 Connecting the Cables

The power cord should be selected according to the following speci cations sheet.
Cable type: SOOW type
Appliance Amps
10
13
18
25
30
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
9K
12K
18K
24K
30K
36K
48K
60K
Table 5
Data subject to change
Max. Tightening
N•m (lb ft) Torque N•m (lb ft)
1,600 (11.8lb • ft)
2,600 (19.18lb • ft)
3,600 (26.55lb • ft)
4,700 (34.67lb • ft)
AWG Wire Size
18
16
14
12
10
Pipe size
Liquid side Gas side
(in / mm) (in / mm)
1/4" / 6.35 3/8" / 9.52
1/4" / 6.35 1/2" / 12.7
3/8" / 9.52 5/8" / 15.9
3/8" / 9.52 3/4" / 19
Precharged Max Pipe
length Length
Capacity
(ft / m) (ft / m)
9K
82 / 25
12K
18K 98 / 30
24K
25 / 7.6 164 / 50
30K
36K
48K 213 / 65
60K
Table 6

4.4 First Time Installation

4.4.1 Air Purging with Vacuum Pump
(Liquid Side)
(Indoor Unit)
(Gas Side)
Manifold Valve
Compound Meter
-0.1MPa
Handle Lo
Shut-Off Knob
Shut-Off Knob High
Low Refrigerant
Charge/Refrigerant Hose
Manifold/Blue
Vacuum
Pump
Figure 3
1. Completely tighten the are nuts of the indoor and outdoor units, con 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. Con rm that the gauge needle does not move
(approximately 5 minutes after turning off the vacuum pump).
Service Manual
Max difference Additional charge
in height for each ft
(ft / m) (oz)
33 / 10
0.16
66 / 20
82 / 25
0.32
98 / 30
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Pressure
Gauge
Handle Hi
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