Bryant 541A Installation, Start-Up And Service Instructions Manual page 20

1. Hot gas from compressor flows through the reversing (4-way) valve
and is directed to the outdoor coil header. At the outdoor coil it is
condensed and subcooled through converging circuits.
2. Check valve "A" directs all hot gas flow into circuits in bottom face of
outdoor coil. Refrigerant condenses in these circuits and then exits
into an intermediary collection header.
3. Refrigerant is directed from intermediary header to circuits in upper
face where further condensing is accomplished.
4. Refrigerant exits upper coil section into the top half of the vapor
header (above check valve "A") and is then redirected to a final (sub-
cooling) pass in center of coil face (120) or exits header via outlet
tube (180).
LEGEND
TXV — Thermostatic Expansion Valve
NOTES:
1. Check valves are designated "A" through "D."
2. Illustrations are typical and do not portray exact coil circuiting.
3. Check valve positions:
Fig. 18 — Typical Heat Pump Cooling Operation Schematic
(541A120 Shown)
5. Refrigerant leaves the outdoor coil by way of check valve "B" to the
liquid line.
6. The refrigerant then flows through the filter drier and feeds the
indoor coil by way of the TXV and feeder valves.
7. Each circuit evaporates the refrigerant and the circuits are combined
in the indoor coil header.
8. The refrigerant then flows through the reversing (4-way) valve, accu-
mulator and back to the compressor.
open, closed.
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