Carrier 50HCQA07 Installation Instructions Manual page 48

LPS/LOC
Filter
Drier
2B
1B
DFT 1
Acutrol
1A
DFT 2
2A
Outdoor Coil
Fig. 56 — Typical Unit Piping Schematic (50HCQ08, 09 Shown)
Table 21 — Cooling Mode (each circuit)
COMPONENT
Reversing Valve
Check Valve A
Check Valve B
Check Valve C
Check Valve D
Table 22 — Heating Mode (each circuit)
COMPONENT
Reversing Valve
Check Valve A
Check Valve B
Check Valve C
Check Valve D
Cooling Liquid Lines
Reversing
Valve
HPS
Comp 2
Accuater
Heating Mode Liquid Lines
(7.5 ton units only)
STATUS/POSITION
Energized
Closed
Open
Closed
Open
STATUS/POSITION
De-energized
Open
Closed
Open
Closed
Reversing
Valve
HPS
Comp 1
2C
Accuater
1C
Strainer
(7.5 ton units only)
Table 23 — Defrost Mode
COMPONENT
Defrost Thermostat
Outdoor Fan(s)
Reversing Valve
Check Valve A
Check Valve B
Check Valve C
Check Valve D
48
2D
1D
Indoor Coil
STATUS/POSITION
Closed
Off
Energized
Closed
Open
Closed
Open
TXV
TXV