Together with other products from the Dave Lennox Signature® Collection, the . If installed in South Coast Air Quality Management District (SCAQMD) only: Lennox SL280UHV Pdf User Manuals. View online or download Lennox SL280UHV Installation Instructions Manual, User Instruction Manual, User's Information E 2011 Lennox Industries Inc. .. Lennox does not recommend the use of SL280UHV units Do not install a manual damper, barometric draft regulator,. Page 1 INSTALLATION 2011 Lennox Industries Inc. INSTRUCTIONS Dallas, Texas, USA SL280UHV DAVE LENNOX SIGNATURE® COLLECTION GAS Lennox · Signature. Lennox Furnace SL280V SL280DFV Gas Furnace Homeowners Manual · SL280UHV Gas SL280UHV Gas Furnace Installation Manual Procedures outlined in this manual are presented as a recommendation only and Page 54 Page 1 Improper installation, adjustment, alteration, service or 2011 Lennox Industries Inc. SPECIFICATIONS Gas Heating Performance Model No.tured with Lennox Duralokt heat exchangers formed of aluminized steel. cedures outlined in this manual are presented as a recom- mendation only and do not supersede . installation and service to protect the furnace's electronic controls. SL280UHV / Page 2. B. C. I. H. D. E. G. F Lennox Duralok™ Heat Exchanger Assembly. 3. .. configuration without a manual, Installer can also run tests on Service manuals for Lennox Commercial light commercial HVAC equipment. View and Download Lennox SL280UHV installation instructions manual online. SL280UHV Series DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE