MG & SG Series Boilers – Installation and Service Manual
32
INDEX Section 10
Section Page
Dimensions and Specifications – MG Series Boilers.................................................................................... 2
Dimensions and Specifications – SG Series Boilers .................................................................................... 3
About Our Manuals ....................................................................................................................................... 4
1 Lighting Instructions......................................................................................................................... 4
1.1 Safety Instructions............................................................................................................................... 4
1.2 Lighting Instructions ............................................................................................................................ 4
1.3 Lighting Instructions for Standing Pilot with Combination Gas Valve ................................................. 5
1.4 Lighting Instructions for Intermittent Electronic & Hot Surface Ignition with Combination Gas Valve 5
1.5 To Turn off Gas to the Boiler or Emergency Shut-Off.........................................................................6
2 Installation Instructions.................................................................................................................... 6
2.1 Receiving............................................................................................................................................. 6
2.2 Installation Codes and Requirements ................................................................................................. 6
2.3 Location............................................................................................................................................... 7
2.4 Gas Service Piping.............................................................................................................................. 7
2.5 Air Supply for Combustion and Ventilation ......................................................................................... 8
2.6 Corrosive Atmospheres....................................................................................................................... 8
2.7 Venting ................................................................................................................................................ 8
2.8 Automatic Vent Damper .................................................................................................................... 10
2.9 Blocked Vent and Flame Roll-out Safety Switches........................................................................... 10
2.10 Boiler Piping System ......................................................................................................................... 11
2.11 Corrosion Prevention (Internal) ......................................................................................................... 11
2.12 System Operating Requirements ...................................................................................................... 11
2.13 Pressure Relief Valve........................................................................................................................ 12
2.14 Electrical Wiring................................................................................................................................. 12
3 Startup Instructions ........................................................................................................................ 13
3.1 Pre-startup................................................................................................................
......................... 13
3.2 Startup............................................................................................................................................... 13
3.3 Check Burner System ....................................................................................................................... 15
3.4 Aquastat Adjustment ......................................................................................................................... 15
3.5 Gas Manifold Pressure...................................................................................................................... 15
3.6 Check Input & Orifices....................................................................................................................... 16
3.7 Check for Draft Hood Spillage........................................................................................................... 17
3.8 Check of Controls.............................................................................................................................. 17
3.9 Check for Gas Leaks......................................................................................................................... 18
3.10 Installer’s Checklist............................................................................................................................ 18
4 Service & Maintenance Instructions ............................................................................................. 19
4.1 Service & Maintenance Instructions.................................................................................................. 19
4.2 Cleaning Procedure........................................................................................................................... 19
4.3 Service Checklist............................................................................................................................... 20
4.4 Caution: Water Replenishment ......................................................................................................... 21
4.5 Refractory Handling Procedure......................................................................................................... 21
5 Boiler Water Flow Data ................................................................................................................... 21
6 Replacement Parts .......................................................................................................................... 22
7 Wiring Diagrams.............................................................................................................................. 24
8 Troubleshooting Guide................................................................................................................... 29
9 Notes................................................................................................................................................. 31
10 Index ................................................................................................................................................. 32
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