The following installation manuals are available for the UPA range:
Ambirad UPA - Installation Manual - October 2007 - https://www.reznor.co.uk/wp-content/uploads/2023/12/AmbiRad-UPA-Installation-Manual-EN-2007-10-0710UPA-AMEN.pdf
UPA - Installation Manual - September 2003 - https://www.reznor.co.uk/wp-content/uploads/2023/12/Reznor-UPA-Installation-Manual-EN-2003-09-0309UPA-GBEN.pdf