Bosch IDS BOVA20 - Page 12

Installation Instructions
Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
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2. Remove the pressure tap cap from both service valves.
Figure 15
3. Purge the refrigerant lines and indoor coil with dry nitrogen.
Figure 16
This pipe
must have
a thimble
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 filter drier to the Liquid Line.
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 filter 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.
Figure 17
Shipped in package
field installed
3-4" from valve
5. Replace the pressure tap caps after the service valves have cooled.
Figure 18