10
Fig. 13 — TXV (Metering Device) Position in Reheat Coil (Typical Diagram for Sizes 04-06)
Refrigerant System Pressure Access Ports
There are two access ports in the system: one on the suction
tube near the compressor and one on the discharge tube near
the compressor. These are brass fittings with black plastic caps.
The hose connection fittings are standard
1
/
4
-in. SAE Male
Flare couplings.
The brass fittings are two-piece High Flow valves, with a re-
ceptacle base brazed to the tubing and an integral spring-closed
check valve core screwed into the base. (See Fig. 14.) This
check valve is permanently assembled into this core body and
cannot be serviced separately; replace the entire core body if
necessary. Service tools are available from RCD that allow the
replacement of the check valve core without having to recover
the entire system refrigerant charge. Apply compressor refrig-
erant oil to the check valve core’s bottom o-ring. Install the fit-
ting body with 96 ±10 in.-lb of torque; do not over-tighten.
Fig. 14 — CoreMax
1
Access Port Assembly
TXV
1. CoreMax is a registered trademark of Fastest, Inc.
5/8” HEX
0.47
30°
0.596
1/2-20 UNF RH
1/2” HEX
45°
WASHER
O-RING
7/16-20 UNF RH
DEPRESSOR PER AHRI 720
+.01/-.035
FROM FACE OF BODY
This surface provides a metal to metal seal when
torqued into the seat. Appropriate handling is
required to not scratch or dent the surface.
SEAT CORE
(Part No. EC39EZ067)
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