Refrigerant Line Leak Check; Check For Leaks; Evacuate The Refrigerant Lines And Indoor Coil; Evacuation - Bosch BOVA Series Installation Instructions Manual

Installation Instructions
8

Refrigerant line leak check

8.1

Check for leaks

1. Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry
nitrogen.
150 PSI G
Figure 20
2. Check for leaks by using a soapy solution or bubbles at each brazed location.
Figure 21
Bosch Thermotechnology Corp. | 12.2016
9

Evacuation

9.1

Evacuate the refrigerant lines and indoor coil

Do not open the service valves until the refrigerant lines and indoor coil
leak check and evacuation are complete.
1. Evacuate until the micron gauge reads no higher than 350 microns, then close
the valve to the vacuum pump.
0350
Microns
ON
Figure 22
2. Observe the micron gauge. Evacuation is complete if the micron gauge does not
rise above 500 microns in one (1) minute.
Once evacuation is complete blank off the vacuum pump and micron gauge,
and close the valves on the manifold gauge set.
Figure 23
Bosch IDS BOVA | 13
OFF
1 MIN.
Data subject to change