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AERCO SmartPlate SP23
Watts AERCO SmartPlate SP23 User Manual
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SmartPlate Installa
tion, Operation & Ma
intenance Manual
CONTENTS
OMM-
0069_0H
•
SP
-
100
•
1/30/20
20 Technical
Support
•
(800) 52
6-
02
88
•
Mon-Fri, 8 am - 5 p
m EST
Page
4
of
134
(This Page Is In
tentionally Blank)
3
5
Table of Contents
Table of Contents
2
General Information
5
Introduction
5
Electronic Control System/Smartplate (Ecs/Sp)
6
Control Box Assembly
7
Feed-Forward Temperature Sensors
8
Outlet Temperature Sensors
8
Boiler Water Inlet/Outlet Temperature Sensors
8
Electronic Control Valve, Mxg-461
9
Installation
11
Smartplate Piping Assemblies
9
Introduction
11
Receiving and Unpacking Smartplate
11
Site Selection and Preparation
12
Installation Clearances
12
Setting the Unit
13
Repositioning ECS/SP Control Box
14
Heating Fluid and Domestic Hot Water (Dhw) Piping
15
Smartplate Electrical Wiring Connections
16
Additional Component Installation
21
Functional Description
23
Introduction
23
Mechanical Overview
23
Electronic Control Overview
24
Over-Temperature Control and Safety Features
24
Adjustment
27
Introduction
27
Smartplate 3-Way Control Valve, Mxg-461 Adjustment
27
Control Valve Calibration and Status Indications
27
Manual Control of 3-Way Valve - Removable Handwheel to Hamper Tampering
30
Setpoint Temperature Adjustment
31
Over-Temperature Alarm Limit Adjustment
34
Operation
37
Introduction
37
Pre-Operational Checks & Procedures
37
Initial Start-Up
38
Checking Mixed Inlet Temperature
39
Shutting down the System
39
Scheduled Maintenance
41
Introduction
41
Boiler Water Differential Pressure Gauge Check
42
Over-Temp Switch Check
43
Plate Pack Leakage Checks (Double-Wall Models Only)
43
Control Valve Operational Check
44
Strainer Inspection and Cleaning
44
Temperature Sensor Checks
44
Recirculation Pump Check
45
Periodic Cleaning of Heat Exchanger
46
Troubleshooting
47
Introduction
47
Troubleshooting Procedures
47
Corrective Maintenance
57
Heat Exchanger Cleaning & De-Scaling
57
Introduction
57
Single Wall Heat Exchanger Maintenance
57
Single-Wall Heat Exchanger Replacement
60
Double-Wall Heat Exchanger Maintenance
63
Double-Wall Heat Exchanger Cleaning
64
Heat Exchanger Cleaning and De-Scaling (In-Place Method)
64
Heat Exchanger Cleaning by Disassembly
64
Double-Wall Heat Exchanger Opening and Closing
66
Opening Heat Exchanger
67
Removal and Insertion of Plates
69
Closing Heat Exchanger
70
Double-Wall Heat Exchanger Gasket Replacement
73
Replacing Gaskets on Channel Plates
73
Replacing Gaskets on End Plate (First Plate against Frame Plate)
74
Double-Wall Heat Exchanger Replacement
76
Control Valve Electronic Module Replacement and Valve Removal
80
Electronics Module Replacement
80
Control Valve Replacement
82
Recirculation Pump Replacement
83
Strainers
85
Control Box Assembly Replacement
87
Ecs/Sp Control Box Assembly and Components
87
Temperature Controller Replacement
88
Over-Temperature Switch and Temperature Indicators
89
Vac Step-Down Transformer Replacement
90
Appendix A
105
Appendix B - Ecs/Sp Wiring Diagram & Terminal Block Connections
105
Appendix C - Smart Plate Piping Drawings
107
Appendix D - Dimensional Drawings
119
Appendix E - Part Lists
121
Appendix F - Recommended Spare Parts
131
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Watts AERCO SmartPlate SP23 Specifications
General
Brand
Watts
Model
AERCO SmartPlate SP23
Category
Water Heater
Language
English
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