ECS & CXT-E Control Valve Retrofit for SW Double Wall Heaters
Technical Instruction Document
TID-0140_0A
12/30/2014
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
Page 20 of 58
7. For 2 ½, 3 and 4 inch Valve sizes, refer to Figure 3-2 and remove the following items in
the order specified:
a. Lock Washer (23)
b. Pilot Spring Retainer (11)
c. Pilot Spring Backup Washer (31), - 4 inch Valve Only
d. Pilot Spring (10)
e. Socket Head Cap Screws (9)
f.
Valve Seat Retaining Disc (8)
g. Lower Shaft (16) and Valve Stem (12)
h. Valve Seat (7)
i.
Top Piston (6) and Bottom Piston (3) Assemblies
8. Clean all parts thoroughly and remove all dirt and/or scale.
9. Next, proceed to the Valve Reassembly procedures in paragraph 3.1.2 and replace the
items indicated with the new parts provided in the Retrofit Kit.