Refrigerant Recharge - Bosch CLIMATE 5000 Service Manual

6. Loosen the flare nut of the gas valve for 6 or 7 seconds and then
tighten the flare nut again.
a. Confirm the pressure display in the pressure indicator is slightly
higher than the atmospheric pressure.
4.1.2

Refrigerant Recharge

(Indoor unit)
Charging
cylinder
Electronic scale
Fig. 6.
Prior to recharging the refrigerant, confirm the additional amount of refrigerant required using the following table:
Capacity (kW) Standard length
2,6 / 3,5 5m (16.4ft)
5,3 5m (16.4ft)
7 5m (16.4ft)
Table 8.
Procedure:
1. Close both liquid / gas valves.
2. Slightly connect the Handle Lo charge hose to the gas valve service
port.
3. Connect the charge hose to the valve at the bottom of the cylinder.
4. If the refrigerant is R410A, invert the cylinder to ensure a complete
liquid charge.
5. Open the valve at the bottom of the cylinder for 5 seconds to purge
the air in the charge hose, then fully tighten the charge hose with
push pin Handle Lo to the service port.
6. Place the charging cylinder onto an electronic scale and record the
starting weight.
7. Fully open the Handle Lo manifold valve, liquid / gas valves.
8. Operate the air conditioner in cooling mode to charge the system
with liquid refrigerant.
9. When the electronic scale displays the correct weight (refer to the
gauge and the pressure of the low side to confirm), turn off the air
conditioner, then disconnect the charge hose immediately from the
gas valve service port.
CLIMATE 5000 RAC SINGLE SPLIT (R32) – 6720894076 (2019/08)
(Liquid side)
(Gas side)
Check valve
OPEN
Max. elevation
10m (32.8ft)
20m (65.6ft)
25m (82ft)
b. Remove the charge hose from the service port.
7. Fully open liquid / gas valves and tighten the cap of the 2- and 3-way
valves.
Liquid valve
Gas valve / Service port
CLOSE
Max. length
25m (82.0ft)
30m (98.4ft)
50m (164ft)
10. Mount the caps of service port and liquid / gas valves.
11. Use a torque wrench to tighten the caps to a torque of 18 N.m.
12. Check for gas leakage.
Maintenance and Disassembly
(Outdoor unit)
Open
Open
Additional refrigerant
12g/m (0.13oz/ft)
12g/m (0.13oz/ft)
24g/m (0.26oz/ft)
15