CGA 3.12 : 0

1.1 Scope
2.1 General
2.2 Marking
2.3 Main burner
2.4 Flame safeguard
2.5 Pilot and ignition
2.6 Piping and fittings
2.7 Combustion air control
2.8 Warm air control
2.9 Operating controls
2.10 Fan and temperature safety interlock
2.11 Outdoor units
2.12 Main burner valve trains for low pressure gas
2.13 Pilot burner valve train for low pressure gas
2.14 Valve trains for medium and high pressure gas
2.15 Test openings
2.16 Electrical equipment and wiring
2.17 Electric ignition systems
2.18 Bleeds and vents
PERFORMANCE
3.1 General
3.2 Combustion
3.3 Automatic pilots
3.4 Combustion safety controls
3.5 Safety controls and temperature limiting devices
3.6 Operating controls
3.7 Operating temperatures
3.8 Continuous operation
3.9 Electrical tests
3.10 Direct electrical ignition of main burner
INSTRUCTIONS
4.1 Operating instructions
4.2 Installation and service instructions
APPENDIX A
APPENDIX B
APPENDIX C