Utica Boilers MGB Series II/MGC Series 安装指导

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3
Safety Symbols & Warnings
The following defined symbols are used throughout this 
manual to notify the reader of potential hazards of varying 
risk levels.
1 - Ratings & Data - Natural Gas & Propane Gas ......4
2 - Installation Procedure .....................................5
3 - Ventilation & Combustion Air ............................6
4 - Connecting Supply and Return Piping ................7
5 - Vent Installation ........................................... 12
6 - Vent System Modification ............................... 12
7 - Vent Damper Installation & Instructions ........... 13
8 - Connecting Gas Service ................................. 14
9 - Electrical Section .......................................... 15
10 - Wiring Diagram  ......................................... 16
11 - Lighting Instructions ................................... 19
12 - Normal Sequence of Operation ..................... 20
13 - General Instructions .................................... 20
14 - Checking Gas Input Rate To Boiler ................. 22
Appendix A - Control Module ............................... 23
TABLE OF CONTENTS
NOTICE
Used to address practices not related to personal 
injury.
CAUTION
Indicates a hazardous situation which, if not avoided, 
could result in minor or moderate injury.
!
  
 WARNING
Indicates a hazardous situation which, if not avoided, 
could result in death or serious injury.
!
  
DANGER
Indicates a hazardous situation which, if not avoided, 
WILL result in death or serious injury
!  
IMPORTANT: Read the following instructions 
COMPLETELY before installing!!
KEEP THIS MANUAL NEAR BOILER
RETAIN FOR FUTURE REFERENCE
 WARNING
Keep boiler area clear and free from combustible 
materials, gasoline and other flammable vapors 
and liquids.
DO NOT obstruct air openings to the boiler room.
Modification, substitution or elimination of factory 
equipped, supplied or specified components may 
result in personal injury or loss of life.
TO THE OWNER - Installation and service of this 
boiler must be performed by a qualified installer.
TO THE INSTALLER - Leave all instructions with 
boiler for future reference.
When this product is installed in the 
Commonwealth of Massachusetts the installation 
must be performed by a Licensed Plumber or 
Licensed Gas Fitter.
!
  
 WARNING
Fire, explosion, asphyxiation and electrical shock 
hazard.  Improper installation could result in death 
or serious injury.  Read this manual and understand 
all requirements before beginning installation.
!