Designer Guide

6
LOCHINVAR, LLC
300 MADDOX SIMPSON PKWY
LEBANON, TN 37090
www.lochinvar.com
Designer’s Guide / Knight XL Boiler
DIRECT VENT / SIDEWALL - CATEGORY IV VENTING
PVC / CPVC WITH TWO PIPE TERMINATION.
The exhaust piping terminates out the sidewall. The combustion air piping
terminates out the sidewall.
BULLET POINTS
 This is Category IV venting, positive pressure,
condensing stack.
 All joints and seams must be sealed gastight
and may not be common vented.
 All the vent material for this configuration are
obtained locally, including the terminations.
 Maximum distance – 100 equivalent feet of vent.
 Maximum distance – 100 equivalent feet of air intake.