39
Typical Unit Piping
547K*14 heat pump systems include 2 compressors, a revers
-
ing valve, dual-function outdoor and indoor coils, a common
liquid line with bi-flow TXV, and dedicated cooling and heat
-
ing TXVs. 547K*14 unit indoor coils contain a vapor header
check valve. See Fig. 54-55 and Tables 13-15 for typical unit
piping schematic parallel coil circuits during evaporator-
function operation and converging coil circuits during the
condenser-function operation.
Fig. 54 — Piping Schematic — 547K*14 Cooling Mode
Table 13 — 547K*14 – Cooling Mode
COMPONENT
STATUS/POSITION
Reversing Valve
Energized
Check Valve A
Closed
Check Valve B
Open
Check Valve C
Open
Check Valve D
Open
Check Valve E
Open
Check Valve F
Closed
Check Valve G
Closed
Table 14 — 547K*14 – Heating Mode
COMPONENT
STATUS/POSITION
Reversing Valve
De-energized
Check Valve A
Open
Check Valve B
Closed
Check Valve C
Closed
Check Valve D
Closed
Check Valve E
Closed
Check Valve F
Open
Check Valve G
Open
Table 15 — 547K*14 – Defrost Mode
COMPONENT
STATUS/POSITION
Defrost Thermostat
Closed
Outdoor Fan(s)
Off
Reversing Valve
Energized
Check Valve A
Closed
Check Valve B
Open
Check Valve C
Open
Check Valve D
Open
Check Valve E
Open
Check Valve F
Closed
Check Valve G
Closed
LPS/LOC
HPS
Indoor Coil
Outdoor Coil
Filter Drier
C
G
Heating TXV
Cooling TXV
E
B
D
Reversing
Valve
A
F
Cooling TXV
DFT
Summary of Contents for Legacy 547K 14
Page 4: ...4 Fig 2 547K 14 Unit Dimensional Drawing...
Page 5: ...5 Fig 2 547K 14 Unit Dimensional Drawing cont...
Page 8: ...8 Fig 5 547K 14 Roof Curb Details...
Page 21: ...21 Fig 41 Typical Control Wiring Diagram Electromechanical with W7220 Controller...
Page 22: ...22 Fig 42 Typical Power Wiring Diagram 208 230 460 3 60 Unit Shown...
Page 23: ...23 Fig 43 Typical Power Wiring Diagram 575 3 60 Unit Shown...
Page 41: ......