Aerco SmartPlate User Manual download pdf (Page 57)

SmartPlate Installation, Operation & Maintenance Manual

CHAPTER 8 – CORRECTIVE MAINTENANCE

OMM-0069_0E AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 57 of 138

SP-100 Phone: 800-526-0288 PRI: 11/26/2013

CHAPTER 8. CORRECTIVE MAINTENANCE

8.1 INTRODUCTION

This Chapter provides the procedures necessary to correct and repair faults detected during

operation or isolated during troubleshooting of the SmartPlate Water Heater. The procedures in

this Chapter are divided into four sections as follows:

 Section I - SmartPlate Single-Wall Heat Exchanger Models: Single-Wall Heat exchangers

do not include any serviceable assemblies and components. Therefore, the procedures in

this section are limited to heat exchanger cleaning (de-scaling) removal and replacement.

 Section II – Double-Wall Heat Exchanger Corrective Maintenance. This section provides

cleaning and corrective maintenance procedures for serviceable internal components of

the double-wall heat exchanger.

 Section III – SmartPlate Wetted Components - All Models. This section provides

corrective maintenance for major assemblies and components which come in contact with

boiler water or domestic hot water during SmartPlate operation. These assemblies and

components are used on all SmartPlate Models (Single-Wall and Double-Wall).

 Section IV – SmartPlate Electronic Control System (ECS/SP). This section provides

removal and replacement procedures for the internally mounted assemblies and

components contained in the ECS/SP Control Box.

SECTION I SMARTPLATE SINGLE-WALL HEAT EXCHANGER MODELS

8.2 SINGLE WALL HEAT EXCHANGER MAINTENANCE

Since the Single-Wall Heat Exchanger does not contain any serviceable items, the procedures

in this section are limited to cleaning (de-scaling) and removal/replacement. These procedures

are provided in paragraphs 8.3 and 8.4 which follow.

8.3 HEAT EXCHANGER CLEANING & DE-SCALING

Heat Exchanger cleaning and de-scaling is accomplished "in-place" using the following

procedure:

NOTE

The "in-place" cleaning and de-scaling procedure described below

can also be used for Double-Wall Heat Exchangers (Section II)

which are not clogged with hardened scale deposits.

1. Set the POWER Switch on the ECS/SP Control Box to the OFF position to stop the

Recirculation Pump.

2. Close all four SmartPlate Heater Isolation Ball Valves (Figure 8-1).

3. Connect a hose to the Drain Valve near the DHW Outlet.

4. Remove the 1” NPT Air Vent from the top of the Manifold.

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Aerco SmartPlate User Manual Page 57