Bosch BOVB 18 Series Installation Instructions Manual page 12

1 2 | Bosch IDS BOVB 18
2. Remove the pressure tap cap from both service valves.
Figure 15
3. Purge the refrigerant lines and indoor coil with dry nitrogen.
This pipe
must have
a thimble
Figure 16
4. Wrap a wet rag around the valve body to avoid heat damage and continue the
dry nitrogen purge (Fig. 17).
Braze the refrigerant lines to the service valves.
Braze the fi lter drier to the Liquid Line.
NOTICE:
All units come standard with a bi-flow filter drier. Braze the

filter drier to the liquid line, using caution not to push the
refrigerant line too hard past the stop within the fi lter drier
(this could damage the drier).
Continue the dry nitrogen purge. Do not remove the wet rag until all brazing
is completed.
Remove the wet rag before stopping the dry nitrogen purge.
Data subject to change
Figure 17
5. Replace the pressure tap caps after the service valves have cooled.
Figure 18
Installation Instructions
Shipped in package
field installed
3-4" from valve
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