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Heatilator • NNXT33-IFT, NNXT33L-IFT, NNXT36-IFT, NNXT36L-IFT Installation Manual • 2628-980 Rev. C • 8/20
2
Safety Alert Key:
• DANGER!
Indicates a hazardous situation which, if not avoided
will
result in death or serious injury.
• WARNING!
Indicates a hazardous situation which, if not avoided
could
result in death or serious injury.
• CAUTION!
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE:
Used to address practices not related to personal injury.
Note:
The term “recommend” or “recommended” does not indicate a requirement. It is a best practice suggested by Hearth
& Home Technologies
®
. Failure to perform the recommended task will not result in a safety concern.
Table of Contents
Installation Standard Work Checklist
. . . . . . . . . . . . . . . . . . . . 3
1 Product Specific and Important Safety Information
A. Appliance Certification
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
B. Glass Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
C. BTU Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . . . . . 4
E. Non-Combustible Materials Specification
. . . . . . . . . . . . . . 4
F. Combustible Materials Specification
. . . . . . . . . . . . . . . . . 4
G. Electrical Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
H. California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
I. Requirements for the Commonwealth of Massachusetts . . 5
2 Getting Started
A. Design and Installation Considerations . . . . . . . . . . . . . . . 6
B. Good Faith Wall Surface . . . . . . . . . . . . . . . . . . . . . . . . . . 6
C. Tools and Supplies Needed . . . . . . . . . . . . . . . . . . . . . . . . 6
D. Inspect Appliance and Components . . . . . . . . . . . . . . . . . . 7
3 Framing and Clearances
A. Appliance/Decorative Front Dimension Diagrams . . . . . . . 8
B.
Appliance Location and
Clearances to Combustibles . . . 12
C. Constructing the Appliance Chase . . . . . . . . . . . . . . . . . . 14
4 Termination Location and Vent Information
A. Approved Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
B. Vent Termination Minimum Clearances . . . . . . . . . . . . . . 15
C. Vent Terminal Clearances . . . . . . . . . . . . . . . . . . . . . . . . 16
D. Use of Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
E. Vent Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5 Vent Clearances and Framing
A. Pipe Clearances to Combustibles . . . . . . . . . . . . . . . . . . 31
B. Wall Penetration Framing/Firestops . . . . . . . . . . . . . . . . . 32
C. Ceiling Firestop/Floor Penetration Framing . . . . . . . . . . . 33
D. Install Attic Insulation Shield . . . . . . . . . . . . . . . . . . . . . . . 33
6 Appliance Preparation
A. Top Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
B. Prepare For Heat Management . . . . . . . . . . . . . . . . . . . . 36
C. Securing and Leveling the Appliance . . . . . . . . . . . . . . . . 36
7 Venting and Chimneys
A. Assemble Vent Sections (DVP Pipe Only) . . . . . . . . . . . 37
B. Assemble Slip Sections . . . . . . . . . . . . . . . . . . . . . . . . . . 39
C. Secure the Vent Sections . . . . . . . . . . . . . . . . . . . . . . . . . 39
D. Disassemble Vent Sections . . . . . . . . . . . . . . . . . . . . . . . 40
E. Vertical Termination Requirements . . . . . . . . . . . . . . . . . . 40
F. Horizontal Termination Requirements . . . . . . . . . . . . . . . 41
G. Shrouds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8 Electrical Information
A. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
B. Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9 Gas Information
A. Fuel Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
B. Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
C. Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . . . . 47
E. Air Shutter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10 Finishing
A. Facing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
B. Mantel and Wall Projections . . . . . . . . . . . . . . . . . . . . . . . 49
C. Non-combustible Mantel and Wall Projections for use with
Simon Fronts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
D. Non-combustible Mantel and Wall Projections for use with
Demi / Tres Fronts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11 Appliance Setup
A. Remove the Shipping Materials . . . . . . . . . . . . . . . . . . . . 51
B. Clean the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
C. Install Burner Media / Embers . . . . . . . . . . . . . . . . . . . . . 51
D. Install Control Heat Shield . . . . . . . . . . . . . . . . . . . . . . . . 52
E. Install Fixed Glass Assembly . . . . . . . . . . . . . . . . . . . . . . 52
F. Install Decorative Barrier Front. . . . . . . . . . . . . . . . . . . . . 52
G. Install Logs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
12 Reference Materials
A. Vent Components Diagrams . . . . . . . . . . . . . . . . . . . . . . 55
B. Optional Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
C. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
= Contains updated information.