Installation Instructions Bosch IDS BOVB 18 | 13
Bosch Thermotechnology Corp. | 10.2020
Data subject to change
8 Refrigerant Line Leak Check
8.1 Check For Leaks
1. Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry
nitrogen.
Figure 19
2. Check for leaks by using a soapy solution or bubbles at each brazed location.
Figure 20
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.
Figure 21
0350
Microns
ON
OFF
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, turn off the vacuum pump and micron gauge,
and close the valves on the manifold gauge set.
Figure 22
1MIN.
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