AERCO Electronic Controls System (ECS) User Manual
Page 51
Electronic Control System (ECS) and Type CXT-E Valve
VD2: 02/28/14 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
Page 51 of 82
AC-105
OMM-0003_0D
provide a uniform seal and prevent Valve leakage.
d) NEW Packing Assembly (20)
e) Packing Nut (18)
f) Hex Nuts (17)
g) Indicator Plate (See Figure 8-1 or 8-2)
8) Replace the Actuator (27), Linkage (26) and Gasket (29) onto the Valve Top (21) and
secure with Cap Screws (19).
9) Position the Hex Nuts (17) at the original location noted during the removal process (CM7).
10) Install the Indicator Plate on the Valve Shaft (16) with the curved end facing upward (Figure
8-4).
11) Attach the Valve Shaft (16) to the Linkage Adapter by rotating the Shaft counterclockwise
(as viewed from above). If the Valve Shaft cannot be turned by hand, use an open-end
wrench to turn the “double-nuts” on the Shaft until it engages the Linkage adapter threads.
Insert the Shaft into the Linkage Adapter until the Hex Nuts (17) are snug against the
Indicator Plate.
12) Press down on the Valve Shaft (16) to compress the Pilot Spring (10) in the Valve Body.
13) With the Pilot Spring compressed, verify that the Indicator Plate is aligned with the “0”
(zero) marking on the Scale (28). If necessary, rotate the Valve Shaft until the Plate is
aligned with the “0” Scale marking.
14) If the Valve had been removed from the heating fluid line, replace it in. the line. Reconnect
the electrical connector plug to the Actuator.
15) Prior to placing the Valve back into service, perform the Control Valve Adjustment
procedure in Section 3.