Aerco Modulex MLX-303 User Manual

MC2: 10/03/12 Page 4 of 90
GF-115-H
OMM-0083_0B
Modulex MLX Series Gas Fired Boiler System
Operation and Maintenance Manual
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
6.2 DHW (Domestic Hot Water) Storage Tank ................................................................... 31
6.3 Enable / Disable ............................................................................................................. 31
6.4 Installation Of Sensors ................................................................................................... 31
CHAPTER 7: BOILER OPERATION ..................................................................................... 33
7.1 Introduction to Boiler Operation .................................................................................... 33
7.2 Modulation Theory ......................................................................................................... 33
7.3 Ignition Sequence ........................................................................................................... 33
7.4 Modes of Operation ........................................................................................................ 34
7.4.1 Indoor/Outdoor Reset .......................................................................................... 34
7.4.2 0 To 10 Volt Remote Set-Point ........................................................................... 34
7.4.3 Constant Set-Point ............................................................................................... 34
7.4.4 Boiler Operation for Troubleshooting (Manual Mode)....................................... 34
7.5 Modulex Boiler Initial Startup ....................................................................................... 34
7.5.1 Tools & Instruments Required For Combustion Calibration .............................. 35
7.5.2 Installing the Supply Gas Manometer ................................................................. 35
7.5.3 Preparing The Flue For Use With The Combustion Analyser ............................ 36
7.5.4 Supply Gas Pressure Check & Adjustment ......................................................... 36
7.5.5 Combustion Calibration. ..................................................................................... 38
7.6 Unit Reassembly ............................................................................................................ 40
CHAPTER 8: SAFETY DEVICE TESTING .......................................................................... 41
8.1 Testing of Safety Devices .............................................................................................. 41
8.2 Processing and Clearing Fault Codes ............................................................................. 41
8.3 LOW GAS PRESSURE FAULT TEST......................................................................... 42
8.4 LOW WATER LEVEL FAULT TEST ......................................................................... 43
8.5 WATER TEMPERATURE FAULT TEST ................................................................... 44
8.6 FLAME FAULT TESTS ................................................................................................ 45
8.7 SAFETY PRESSURE RELIEF VALVE TEST ............................................................ 46
CHAPTER 9: MAINTENANCE ............................................................................................... 47
9.1 Modulex Preventative Maintenance Kits ....................................................................... 47
9.1.1 Annual Maintenance Kit ..................................................................................... 47
9.1.2 Fireside Inspection Kit ........................................................................................ 47
9.2 Annual Maintenance Instructions................................................................................... 48
9.2.1 REQUIRED Tasks: ............................................................................................. 48
9.2.2 RECOMMENDED Tasks: .................................................................................. 48
9.2.3 Tools Required .................................................................................................... 48
9.2.4 Replacing the Spark Igniters and Flame Detectors ............................................. 50
9.2.5 Testing the Flame Detection Circuitry ................................................................ 50
9.3 Fireside Inspection Instructions ..................................................................................... 50

Aerco Modulex MLX-303 Specifications

General

Brand	Aerco
Model	Modulex MLX-303
Category	Boiler
Language	English