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

Service Manual

6 Installation Details

6.1 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 15.9 ( Ø 0.625") 4,500 (33.19lb • ft)
Table 4

6.2 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 5
The cable sizes 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. A means of disconnecting the power, should
be within 10 feet of the outdoor unit.

6.3 Pipe Length and the Elevation

Regular Multi Zone ODU
Capacity
Liquid side
(in / mm)
18k 2 x 1/4" / 2 x 6.35
27k 3 x 1/4" / 3 x 6.35
36k 4 x 1/4" / 4 x 6.35
48k 5 x 1/4" / 5 x 6.35
Table 6
Hyper Heat Multi Zone ODU
Capacity
Liquid side
(in / mm)
18k 2 x 1/4" / 2 x 6.35
27k 3 x 1/4" / 3 x 6.35
36k 4 x 1/4" / 4 x 6.35
Table 7
Bosch Thermotechnology Corp. | 08.2020
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 11
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
Gas side
(in / mm)
2 x 3/8" / 2 x 9.52
3 x 3/8" / 3 x 9.52
4 x 3/8" / 4 x 9.52
3 x 3/8" + 2 x 1/2"
3 x 9.52 + 2 x 12.7
Pipe size
Gas side
(in / mm)
2 x 3/8" / 2 x 9.52
3 x 3/8" / 3 x 9.52
3 x 3/8" + 1 x 1/2"
3 x 9.52 + 1 x 12.7

6.4 First Time Installation

6.4.1 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 7
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 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 350 ~500 microns. If the meter does
not indicate 350 ~ 500 microns after evacuating for 30 minutes, it should
be evacuated 20 minutes more. If the pressure can't hold 350 ~ 500
microns after evacuating 50 minutes, please check if there are any 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).
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 de ned speci cations).
Gas leak check:
— Required after completion of refrigerant line set installation
— Unit service valves remain closed to isolate refrigerant into
outdoor unit (condensing section)
— Line set and coil should be pressurized to at least 150 PSIG
using dry Nitrogen
— Check for leaks using bubble solution at each braze joint
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Pressure
Gauge
Handle Hi
Data subject to change