Carrier 50HCQ - Page 9

9
Table 2 – Heating Mode (each circuit)
Component Status/Position
Reversing Valve De-energized
Check Valve A Open
Check Valve B Closed
Check Valve C Open
Check Valve D Closed
Table 3 – 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 Closed
Check Valve D Open
COMPRESSOR
ACCUMULATOR
HPS
COMPRESSOR
ACCUMULATOR
HPS
Filter
Drier
2B
1B
LPS/LOC
Acutrol
DFT 1
Cooling Liquid Lines
DFT 2
2A
1A
1D
2D
Outdoor Coil
Indoor Coil
Comp 2
Comp 1
2C
1C
Strainer
Heating Mode Liquid Lines
Acutrol
Reversing
Valve
Reversing
Valve
C160139
Fig. 5 − Typical Unit Piping Schematic (with TXV valves on Indoor Coils)
o
o
C08453
Fig. 6 − CoreMax* Access Port Assembly
* CoreMax is a registered trademark of Fastest, Inc.
50HCQ