Table of Contents
PART 1 GENERAL INFORMATION ..................................................................................................................................................................... 1
1.1 INTRODUCTION .......................................................................................................................................................................................... 1
1.2 SPECIAL INSTRUCTIONS TO OWNER ...................................................................................................................................................... 1
1.3 CHECKING EQUIPMENT ............................................................................................................................................................................ 2
1.4 SEQUENCE OF OPERATION...................................................................................................................................................................... 2
1.4.1 HEAT TRANSFER PROCESS ........................................................................................................................................................... 3
1.4.2 END OF SEQUENCE ........................................................................................................................................................................ 4
1.5 CODES ........................................................................................................................................................................................................ 4
1.6 WARRANTY ................................................................................................................................................................................................. 4
1.7 REMOVAL OF EXISTING APPLIANCE ........................................................................................................................................................ 5
1.8 BOILER ROOM OPERATING CONDITION .................................................................................................................................................. 6
1.9 CLEARANCE FROM COMBUSTIBLE MATERIAL ....................................................................................................................................... 6
1.10 INSTALLATION PROCEDURE AND LOCATION OF UNIT .......................................................................................................................... 7
1.11 SPECIFICATIONS AND DIMENSIONAL DATA ............................................................................................................................................ 8
PART 2 VENTING & AIR SUPPLY .................................................................................................................................................................................. 10
2.1 GENERAL VENTING GUIDE ..................................................................................................................................................................... 10
2.1.1 CATEGORY II AND CATEGORY IV VENTING ................................................................................................................................ 11
2.1.2 VENTING GUIDELINES FOR CATEGORY II AND/OR IV VENTING ............................................................................................... 11
2.1.3 APPROVED VENTING MATERIALS ............................................................................................................................................... 11
2.1.4 VENT TERMINATION CLEARANCES ............................................................................................................................................. 12
2.1.5 INLET CAP FOR ROOFTOP TERMINATION .................................................................................................................................. 12
2.1.6 LOCATION OF A ROOFTOP AIR INLET AND VENT CAPS ............................................................................................................ 12
2.1.7 AIR INLET DAMPER ....................................................................................................................................................................... 13
2.1.8 MASONRY CHIMNEY INSULATIONS ............................................................................................................................................. 13
2.1.9 VERTICAL VENTING TERMINATION ............................................................................................................................................. 13
2.1.10 COMBINED COMBUSTION AIR INLET ........................................................................................................................................... 13
2.1.11 DRAIN TEE ..................................................................................................................................................................................... 14
2.2 CONVENTIONAL VENTING (INDOOR) INSTALLATIONS ......................................................................................................................... 15
2.2.1 AIR REQUIRED FOR COMBUSTION AND VENTILATION ............................................................................................................. 15
2.2.2 EXHAUST FANS ............................................................................................................................................................................. 15
2.3 OUTDOOR VENTING (Pending) ................................................................................................................................................................ 15
2.4 SIDEWALL VENTING ................................................................................................................................................................................ 16
2.4.1 SIDEWALL VENT TERMINAL & SIDEWALL INTAKE AIR TERMINAL ............................................................................................ 16
2.4.2 LOCATION OF A SIDEWALL VENT TERMINATION ....................................................................................................................... 16
2.4.3 LOCATION OF A SIDEWALL AIR INLET TERMINAL ...................................................................................................................... 18
2.4.4 LENGTH OF AIR INLET PIPE ......................................................................................................................................................... 18
PART 3 GAS CONNECTIONS ........................................................................................................................................................................... 19
3.1 GAS CONNECTION ................................................................................................................................................................................... 19
3.2 GAS PIPING .............................................................................................................................................................................................. 19
3.3 INSTALL PIPING ........................................................................................................................................................................................ 19
3.4 AIR/GAS RATIO VALVE ............................................................................................................................................................................ 20
3.5 OPERATION OF NEGATIVE PRESSURE AND DIFFERENTIAL PRESSURE VALVES ............................................................................ 21
3.6 GAS MANIFOLD DIFFERENTIAL PRESSURE ADJUSTMENT ................................................................................................................. 21
3.7 CHECKING GAS SUPPLY PRESSURE ..................................................................................................................................................... 21
3.7.1 REGULATED GAS SUPPLY PRESSURES FOR AVENGER BOILERS & WATER HEATERS ........................................................ 22
3.8 CHECKING DIFFERENTIAL AIR AND DIFFERENTIAL GAS PRESSURES .............................................................................................. 22
3.9 GAS TRAIN AND CONTROLS ................................................................................................................................................................... 23
3.10 VENTING OF GAS VALVES AND PRESSURE SWITCHES ...................................................................................................................... 24