Refrigerant Line Leak Check; Check For Leaks; Evacuation; Evacuate The Refrigerant Lines And Indoor Coil - Bosch BOVB 18 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 19
2. Check for leaks by using a soapy solution or bubbles at each brazed location.
Figure 20
Bosch Thermotechnology Corp. | 10.2020

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 21
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.
1 MIN.
Figure 22
Bosch IDS BOVB 18 | 13
OFF
Data subject to change