How far away should I keep the fire sprinklers from an outdoor, surface-mounted heater? These heaters will be installed in the outdoor patio areas on a house but there is nothing in 13D that describes this particular appliance.
Did you even look in 13???
18.104.22.168. NFPA 13 [2002 edition] also same section table.
And also bump to higher temp head.
Above is a snippet.