The following installation manuals are available for the LTU range:
Benson LTU - Installation Manual - January 2016 - https://www.reznor.co.uk/wp-content/uploads/2023/12/Benson-LTU-Installation-Manual-EN-2016-01-1601LTUAMEN.pdf
What installation manuals are available for the LTU?
Looking for the installation guide for your Reznor product? Have a look in here.