The following installation manuals are available for the COMET+ 300kW Condensing Natural Gas Cabinet Heater - Ducted (COMET300-D-N-2C):
Where can I find the installation manual for a COMET+ 300kW Condensing Natural Gas Cabinet Heater - Ducted (COMET300-D-N-2C)
Looking for the installation guide for your Reznor product? Have a look in here.