Bosch BOVA-36HN1-M18M User Manual download pdf (Page 13)

Installation Instructions Bosch IDS BOVA | 13

Bosch Thermotechnology Corp. | 12.2016

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.

150 PSI

Figure 20

2. Check for leaks by using a soapy solution or bubbles at each brazed location.

Figure 21

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

OFF

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.

1MIN.

Figure 23

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Bosch BOVA-36HN1-M18M User Manual Page 13