NTI Boiler: Service clearances and combustible spacing
Service clearances and combustible spacing on a NTI boiler: Clearance to combustibles is 0 inches on top, bottom, sides and back. Minimum service clearance is 18 inches front, 14 inches top, 12 inches bottom, 2 inches each side and 0 inches back. A combustible door or removable panel is acceptable at the front, with at least 3 inches from the front cover. Keep 8 inches from high heat sources.
Applies to: TRX boilers, indoor install only
If the unit shows an error code, look it up: NTI Boiler codes
Models
TRX085TRX110CTRX150TRX199TRX199C
Source: NTI TRX150 manual, p. 6. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.