| Assessment: Feasibility of installing specified oxygen (O2) trim will be determined by site conditions Installation: O2 trim controls and required accessories (e.g., O2 sensors) will be installed in accordance with manufacturer specifications O2 trim control will be installed to operate within both the burner and O2 trim control manufacturer-specified turndown ratio Startup and testing of any O2 trim control device will be performed by factory-authorized technician; where a factory-authorized technician is not available, this work will be performed by "qualified person," as defined by
NFPA
NFPA
National Fire Protection Association, www.nfpa.org
31, 3.3.50 O2 trim, VFD, and linkage-less control will be interlocked and coordinated in accordance with manufacturer specifications Testing: Testing will be done to verify that O2 level is maintained in accordance with manufacturer specification throughout the burner firing range Testing will be done to verify that O2 level is maintained in accordance with manufacturer specification during mild weather and extreme cold/design temperatures before warranty period ends Linkage-less burner controls/VFD/O2 trim control will be tested with all fuel types anticipated for use in the application | 