ECS Upgrade for SW Double Wall Heaters, Kits 27035, 27036, 27037
Technical Instruction Document
TID-0142_0A
12/30/2014
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
Page 3 of 24
1. INTRODUCTION
This document applies to steam-to-water (SW) Double Wall (DW) heaters. It provides instructions
for upgrading an existing SWDW water heater with an ECS (Electronic Control System) system
and a flow sensor to an ECS system using a circulation pump.
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.
Operations and Maintenance Manual 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
The following paragraphs in this Section describe the safety precautions to be followed, the tools
and test equipment required to perform all procedures in this document and the contents of
the Upgrade Kits for all Heater Models.
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.
WARNING!
HIGH VOLTAGE OF 120 VAC IS USED IN AERCO INDIRECT
FIRED WATER HEATERS. USE EXTREME CARE WHEN
ACCESSING CIRCUITS AND ELECTRICAL CONNECTIONS
WITHIN THE EQUIPMENT. SERIOUS PERSONAL INJURY OR
DEATH MAY OCCUR IF THIS WARNING IS NOT OBSERVED.
FOLLOW OSHA APPROVED LOCKOUT/TAGOUT PROCDURES.
NOTICE:
Burn permits may be required for certain installations
requiring braising.
