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Modulex MLX-909
Aerco Modulex MLX-909 User Manual
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MC2: 10
/
03
/12
Page
54
of
90
AERCO
Internatio
nal, Inc
.
•
100
Oritani Dr
.
•
Blauvelt
,
NY 10913
•
Ph
:
800-526-0288
GF
-115-H
OMM
-
0083_0B
Module
x MLX Series Ga
s Fired Boiler S
y
stem
Operation and Mai
ntena
nce Manual
Chap
9:
Main
tenance
Figure
9-9
: Fan Assembly
(L), Support Rod (I) and Holes (M)
Figure
9-
10
: Accessi
ng Co
ndensate
Tray
Figure
9-11
: Fan Assembly Lifted to Access Burner Modules
Burner Modules
53
55
Table of Contents
Table of Contents
3
Chapter 1: Safety Precautions
7
Important - for Massachusetts Installations
8
Chapter 2: General Description
11
Introduction to Technical Features
11
Code and Standards Approvals
12
Installation Flexibility
12
Dimensions and Weights
13
Technical Data
15
Modulex Main Components - Side View
16
Boiler Freeze Protection
17
Chapter 3: Installation
19
Introduction to Installation
19
Installation Instructions
19
Unpacking the Boiler
19
Boiler Location
21
Pad Height for Boiler
21
Boiler Connections
22
Data Plate
23
Chapter 4: General Information for Venting
25
Vent Pipe Connection
25
Gas Vent Categories
25
Installation and Sizing
25
Existing Boiler Removal from Common Venting System
26
Chapter 5: Piping
27
Makeup Water Quality
27
Maximum Allowable Working Pressure
27
Boiler Loop Design Guidelines
27
CSD-1 Manifold Assembly (Supplied)
27
Connecting Supply and Return Piping (Per ANSI Z21.13A)
27
System Filling and Draining
28
Notes on Condensate Drain
28
Gas Mains and Connections
28
Chapter 6: Electrical
29
Electrical Connections
29
DHW (Domestic Hot Water) Storage Tank
31
Enable / Disable
31
Installation of Sensors
31
Chapter 7: Boiler Operation
33
Introduction to Boiler Operation
33
Modulation Theory
33
Ignition Sequence
33
Modes of Operation
34
Indoor/Outdoor Reset
34
To 10 Volt Remote Set-Point
34
Constant Set-Point
34
Boiler Operation for Troubleshooting (Manual Mode)
34
Modulex Boiler Initial Startup
34
Tools & Instruments Required for Combustion Calibration
35
Installing the Supply Gas Manometer
35
Preparing the Flue for Use with the Combustion Analyser
36
Supply Gas Pressure Check & Adjustment
36
Combustion Calibration
38
Unit Reassembly
40
Chapter 8: Safety Device Testing
41
Testing of Safety Devices
41
Processing and Clearing Fault Codes
41
Low Gas Pressure Fault Test
42
Low Water Level Fault Test
43
Water Temperature Fault Test
44
Flame Fault Tests
45
Safety Pressure Relief Valve Test
46
Chapter 9: Maintenance
47
Modulex Preventative Maintenance Kits
47
Annual Maintenance Kit
47
Fireside Inspection Kit
47
Annual Maintenance Instructions
48
REQUIRED Tasks
48
RECOMMENDED Tasks
48
Tools Required
48
Replacing the Spark Igniters and Flame Detectors
50
Testing the Flame Detection Circuitry
50
Fireside Inspection Instructions
50
Unit Disassembly for a Fireside Inspection
51
Removing the Burner Modules
55
Maintenance of Burner Modules and Combustion Chamber
56
Reassembly after Burner Mainentance
57
Testing the Flame Detection Circuitry
57
Disassembly, Inspection, and Maintenance for the Flue Collector
57
Burner Section Replacement Instructions
59
Disassembly for Burner Section Replacement
60
Replacement of Burner Sections
61
Replacing the Condensate Tray Top Gasket
62
Re-Assembly after Burner Section Replacement
64
Final Testing and Return to Service
64
Chapter 10: Trouble Shooting Guide
65
Introduction
65
Corrective Action
66
Chapter 11: Temperature Sensor Resistance Chart
77
Chapter 12: Modulex Parts Drawing and List
78
Chapter 13: Boiler Water Quality and Maintenance
83
Modulex Boiler Water Chemistry
84
Reaction of Metals to Water Chemistry
84
Scale and Corrosion
84
Make-Up or Feed Water Quality
84
Treating Water to Prevent Freezing
84
Water Treatment Certification
85
Testing and Maintenance of Water Quality
85
System Flushing, Treatment, and Cleansing
86
Water Quality Maintenance and Boiler Warranty
87
Water Treatment Certification
87
Water Treatment Analysis and Scheduling
87
Hydronic Water Testing and Treatment Resources
88
MC2: 10/03/12 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
90
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Aerco Modulex MLX-909 Specifications
General
Brand
Aerco
Model
Modulex MLX-909
Category
Boiler
Language
English
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