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 3 of 58
1. INTRODUCTION
This document provides the procedures necessary to remove an existing Control Valve Actuator
and Control Box and replace it with a new CXT-E Electronic Control Valve Actuator and Electronic
Control System (ECS). These procedures are applicable to all
AERCO
Indirect-Fired Steam-to-
Water Double-Wall Heaters with Control Valves ranging in size from 1 inch to 4 inches and
currently equipped with pneumatic, electro-hydraulic or self-contained valve actuators. This
document applies to Double Wall steam-to-water heaters.
These instructions must be performed by a skilled service technician capable of exercising the
necessary safety precautions when working with high temperature, pressurized steam and water
systems.
Instruction No. HE-111 is the required manual for SWDW models and is available from the O&M
Manuals section of the AERCO International website, www.aerco.com
1.1
Safety Precautions
Installation, maintenance and operating personnel must, at all times, observe all safety
regulations. The following warnings are general and must be given the same attention as specific
precautions included in these instructions.
WARNING!
FLUIDS UNDER PRESSURE MAY CAUSE INJURY TO
PERSONNEL OR DAMAGE TO EQUIPMENT WHEN RELEASED
Shut off all incoming and outgoing steam and water stop
valves and carefully decrease all trapped pressures to zero
before performing any maintenance.
WARNING!
LIVE STEAM CAN CAUSE SEVERE BURNS
Never search for leakage in a live steam line by sight alone or
by “feel”. Use a mirror or other suitable polished object.
Always provide yourself with personal protective equipment,
(PPE) such as gloves, eye protection, dust mask, hard hat, etc.
NOTICE:
Burn permits may be required for certain installations requiring
braising
