Table Of Contents - Watts AERCO Modulex EXT Series Technical Application Manual

Modulex EXT Series Piping
MANDATORY REQUIREMENTS
Contents
SECTION 1: MANDATORY REQUIREMENTS 3
SECTION 2: BOILER QUALITY AND MAINTENANCE
2.1. BOILER WATER CHEMISTRY ................................................................................................ 5
2.1.1. Reaction of Metals to Water Chemistry ......................................................................... 5
2.1.2. Scale and Corrosion ...................................................................................................... 5
2.1.3. Make-up or Feed Water Quality .................................................................................... 5
2.1.4. Treating Water to Prevent Freezing .............................................................................. 5
2.1.5. Water Treatment Certification ....................................................................................... 5
2.2. TESTING AND MAINTENANCE OF WATER QUALITY .......................................................... 6
2.3. SYSTEM FLUSHING, TREATMENT, AND CLEANSING ........................................................ 7
2.3.1. System Flushing Recommendations ............................................................................. 7
2.3.2. Water Quality Maintenance and Boiler Warranty ........................................................... 8
2.3.3. Water Treatment Certification ....................................................................................... 8
2.3.4. Water Treatment Analysis and Scheduling .................................................................... 8
2.3.5. Hydronic System Water Testing and Treatment Resources .......................................... 8
SECTION 3: BOILER LOOP DESIGN GUIDELINES
3.1. Flow Rate & Pressure Drops: Models EXT 450 2S, 600 2S, 800 2S & 1100 2S ................. 10
3.2. Flow Rate & Pressure Drops: Models EXT 1500 2S, 2300 2S, 2600 2S & 3000 2S ............ 12
3.3. PRIMARY PUMP .................................................................................................................... 15
3.4. STRAINERS ........................................................................................................................... 16
3.5. ISOLATION VALVES ............................................................................................................. 16
3.6. AIR VENTING OF THE HEATING SYSTEM .......................................................................... 17
SECTION 4: CSD-1 MANIFOLD ASSEMBLY (SUPPLIED)
4.1. Installing the Pressure Relief Valve and Other Components ............................................ 20
SECTION 5: CONNECTING SUPPLY & RETURN PIPING
5.1. BOILER CONNECTIONS ....................................................................................................... 22
5.2. PRIMARY-SECONDARY PIPING .......................................................................................... 22
5.3. ADDITIONAL SUPPLY AND RETURN PIPING ..................................................................... 22
5.4. CHANGING RIGHT-HAND CONNECTIONS TO LEFT-HAND .............................................. 22
5.4.1. Modulex Light Commercial Models EXT 450 2S, 600 2S, 800 2S & 1100 2S .............. 22
5.4.2. Modulex Commercial Models EXT 1500 2S, 2300 2S, 2600 2S & 3000 2S ................ 23
5.4.3. Reversing Gas Manifold Connections (EXT 450 2S - 1100 2S) ................................... 24
5.4.4. Reversing Cold/Hot Water Flow & Return Connections (EXT 450 2S - 1100 2S) ........ 24
5.4.5. Reversing Flow & Return Temperature Sensors ......................................................... 26
5.4.6. Reversing the Boiler Sensor KF and Automatic Air Vent ............................................. 26
SECTION 6: SYSTEM FILLING AND DRAINING
SECTION 7: CONDENSATE DRAIN
SECTION 8: PIPING DIAGRAMS
Page 2 of 37
10.07.2010
Application Guide
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AERCO International, Inc. • 100 Oritani Dr.
Phone: 800-526-0288
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10
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Blauvelt, NY 10913 TAG-0099