Product Specifi C Information; Appliance Certifi Cation; Glass Specifi Cations (Ceramic); Btu Specifi Cations - Heatilator NNXT4236IF Owner's Manual

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Product Specifi c Information
A. Appliance Certifi cation
MODELS: NNXT4236IF, NNXT4236ILF, NNXT3933IF,
NNXT3933ILF
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Direct Vent Heater
STANDARD: ANSI Z21.88-2014/CSA 2.33-2014
This product is listed to ANSI standards for "Vented Gas
Fireplace Heaters" and applicable sections of "Gas Burn-
ing Heating Appliances for Manufactured Homes and
Recreational Vehicles", and "Gas Fired Appliances for
Use at High Altitudes".
NOTICE: This installation must conform with local codes.
In the absence of local codes you must comply with the
National Fuel Gas Code, ANSI Z223.1-latest edition in
the U.S.A. and the CAN/CGA B149 Installation Codes in
Canada.
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
Installation and service of this
appliance should be performed by
qualifi ed personnel. Hearth & Home

Technologies recommends HHT
Factory Trained or NFI certified
professionals.
B. Glass Specifi cations (Ceramic)
This appliance is equipped with 5 mm ceramic glass. Re-
place glass only with 5 mm ceramic glass. Please contact
your dealer for replacement glass.
6 Heatilator • NNXT4236IF, NNXT4236ILF, NNXT3933IF, NNXT3933ILF Owner's Manual • 4055-981 Rev. D • 8/15
C. BTU Specifi cations
Models
(U.S. or Canada)
NNXT4236IF
(0-2000 FT)
(NG)
NNXT4236ILF
(0-2000 FT)
(Propane)
NNXT3933IF
(0-2000 FT)
(NG)
NNXT3933ILF
(0-2000 FT)
(Propane)
Minimum
Maximum Orifi ce
Input
Input BTU/h Size (DMS)
BTU/h
31,000 18,500 #37 DMS
30,000 17,000 #52 DMS
29,000 16,000 #39 DMS
27,500 15,750 1.55 mm