7
Fig. 4 — Unit Piping Schematic for 50TCQ*07
Fig. 5 — CoreMax
1
Access Port Assembly
Table 2 — Cooling Mode (each circuit)
COMPONENT STATUS/POSITION
Reversing Valve Energized
Check Valve A Closed
Check Valve B Open
Check Valve C Closed
Check Valve D Open
Table 3 — 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 4 — 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
HPS
ACCUMULATOR
COMPRESSOR
STRAINER
FILTER
DRYER
LOC
CUTROL
HEATING
MODE
HEATING MODE LIQUID LINES
COOLING MODE LIQUID LINES
1. CoreMax is a registered trademark of Fastest, Inc.
1/2-20
UNF RH
30
0.596
.47
5/8” HEX
SEAT
CORE
WASHER
DEPRESSOR PER ARI 720
+.01/-.035
FROM FACE OF BODY
7/16-20 UNF RH
O-RING
45
o
o
(Part No. EC39EZ067)
This surface provides a metal to metal seal when
torqued into the seat. Appropriate handing is
required to not scratch or dent the surface.
1/2” HEX
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