Installer Guide; Getting Started; Typical Appliance System - Heatilator NNXT4236I Owner's Manual

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Getting Started

A. Typical Appliance System
NOTICE: Illustrations and photos refl ect typical installations and are for design purposes only. Illustrations/diagrams are not
drawn to scale. Actual product may vary from pictures in manual
Note: Dual venting confi gurations
ARE NOT allowed. Appliance
MUST be vented EITHER vertically
OR horizontally.
Noncombustible Roof Flashing
maintains minimum clearance
around pipe (Section 10)
Vent Pipe (Section 8)
Ceiling Firestop on
floor of attic (Section 8)
Horizontal Termination Cap
(Section 10)
Framing/Header
(Section 5)
Gas Line
(Section 12)
Figure 4.1 Typical System

Installer Guide

Heatilator • Novus NNXT • 4055-879 • Rev E • 5/10
Vertical Termination Cap
(Section 10)
NOTE: An installation will have either a
vertical termination or a horizontal
termination. It will not have both (as shown).
Storm Collar
(Section 10)
Vent Pipe penetrates roof preferably
without affecting roof rafters
Attic Insulation Shield (not shown) must be used
here to keep insulation away from vent pipe if
attic is insulated (Section 8)
Framing headed off in
ceiling joists (Section 8)
Optional Wall Switch
(Section 12)
Mantel & Mantel Leg
(Section 5 & 14)
Surround (Section 14)
Hearth Extension
(Not required)
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