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Introduction, Overview of procedure, Reference documents – AERCO Coil & Riser Replacement User Manual

Page 3: He-109

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PR2: 04/01/11 Page 3 of 16

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288

Coil/Riser Replace Instructions for Helitherm Water Heaters

Technical instructions

TID-0038_0A

HE-109

1. Introduction

This document provides the instructions necessary for removal and replacement of Coil Assemblies and

Risers contained in AERCO Indirect-Fired Heat Exchangers. 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. It is imperative that the following Safety Warnings

and Precautions be observed at all times:

2. Overview of Procedure

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.














3. Reference Documents

Refer to the following AERCO documents when removing, replacing or adjusting the indicated

components and assemblies:

HE-104

SW1B-Plus Heat Exchanger Installation, Operation & Maintenance Instructions.

HE-107

SW1A-Plus Heat Exchanger Installation, Operation & Maintenance Instructions.

HE-110

B-Plus II Water Wizard Heat Exchanger Installation, Operation & Maintenance

Instructions.

VA-109

For removal of CXT-S 1” thru 2” Control Valve prior to hydrostatically testing and

for re-commisioning unit.

VA-110

For removal of CXT-S 2.5” thru 4” Control Valve prior to hydrostatically testing

and for re-commisioning unit.

VA-106

For removal of CXT-P Control Valve prior to hydrostatically testing and for

re-commissioning unit.

AC-103

For adjusting Barber-Coleman Temperature Controller for re-commissioning unit.


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.