Specifications include, but are not limited to: Check oil & gas pressure interlocks on boiler burner controls. 2. Check low draft, fan, air pressure and damper. 3. Clean boiler low water cutoff. Flush accumulated sediment in low water cutoff; flush out through blow off valve. Verify no leaks when done. 4. Combustion test to check firing rate control. 5. Perform pilot and main gas &/or oil valve leakage tests. 6. Pilot turndown tests on combustio safety controls. 7. Hot-Refractory hold in test on combustion safety controls. 8. High limit safety controls. 9. Operating control. 10. Fuel valve interlock switches.