Service shall apply to all devices whether the instrument controls, indicates or records and shall include adjustments to gas and oil or combination burners in order to obtain optimum fuel/air ratios to enhance boiler efficiency. The devices serviced shall include, if applicable, but are not limited to:1. Steam flow and air flow meters. 2. Water flow meters. 3. C02 and O2 analyzers 4. Flue gas temperature recorders. 5. Combustion flame safeguard relays. 6. Scanners. 7. Feed water regulators. 8. Transmitter, altimeter gauges and remote "Autocon" transmitting and receiving switches. 9. All probes and aspirators. 10. All necessary interconnecting piping, tubing, wiring, switches and valve manifolds. 11. Draft dampers controllers 13. Force draft blower.