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D. Controls (as required by control manufacturer)¹.
1. Safety Relief Valve. Conduct try lever test as outlined in manufacturer’s instruction tag on the
safety relief valve.
2. Low Water Cut-off (if used). Follow instructions provided by control manufacturer.
E. General Inspection and Maintenance (Annual). For continued safe operation a qualified service
agency must provide a more detailed inspection of burners, heat exchanger and vent system, and
provide maintenance as specified in the Installation, Operation and Maintenance Manual.
Figure 6: Pilot and Main Burner Flames
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Controls maintenance may be part of annual inspection and maintenance by a qualified service agency if annual frequency is
specified by controls manufacturer.