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Heatilator • CNXT Series • 4000-011 Rev N • 11/05
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1
Listing and Code Approvals
A. Appliance Certifi cation
This product is listed to ANSI standards for “Vented Gas
Fireplaces” and applicable sections of “Gas Burning Heating
Appliances for Manufactured Homes and Recreational
Vehicles”, and “Gas Fired Appliances for Use at High
Altitudes”.
Do NOT use this appliance if any part has been under
water. Immediately call a qualifi ed service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
WARNING
MODELS:
CNTX70IT/ILT/IH/ILH
CNXT90IT/ILT/IH/ILH
LABORATORY:
Underwriters Laboratories, Inc. (UL)
TYPE:
Direct Vent Gas Appliance
STANDARD:
ANSI Z21.88-2000•CSA2.33-2000•IR41, P4
and IR56
NOT INTENDED FOR USE AS A PRIMARY HEAT
SOURCE.
This appliance is tested and approved as either
supplemental room heat or as a decorative appliance. It
should not be factored as primary heat in residential heating
calculations.
Note:
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.
B. Glass Specifi cations
Hearth & Home Technologies appliances manufactured with
tempered glass may be installed in hazardous locations such
as bathtub enclosures as defi ned by the Consumer Product
Safety Commission (CPSC). The tempered glass has been
tested and certifi ed to the requirements of
ANSI Z97.1
and
CPSC 16 CFR 1202
(Safety Glazing Certifi cation Council
SGCC# 1595
and
1597
. Architectural Testing, Inc. Reports
02-31919.01
and
02-31917.01
).
This statement is in compliance with
CPSC 16 CFR Section
1201.5
“Certifi cation and labeling requirements” which refers
to
15
U.S. Code
(USC) 2063
stating “…Such certifi cate shall
accompany the product or shall otherwise be furnished to
any distributor or retailer to whom the product is delivered.”
Some local building codes require the use of tempered glass
with permanent marking in such locations. Glass meeting
this requirement is available from the factory. Please contact
your dealer or distributor to order.
C. BTU Specifi cations
D. High Altitude Installations
U.L. Listed gas appliances are tested and approved without
requiring changes for elevations from 0 to 2000 feet in the
U.S.A. and Canada.
When installing this appliance at an elevation above 2000 ft,
it may be necessary to decrease the input rating by chang-
ing the existing burner orifi ce to a smaller size. Input rate
should be reduced by 4% for each 1000 ft above a 2000 ft
elevation in the U.S.A., or 10% for elevations between 2000
and 4500 ft in Canada. If the heating value of the gas has
been reduced, these rules do not apply. To identify the prop-
er orifi ce size, check with the local gas utility.
If installing this appliance at an elevation above 4500 ft (in
Canada), check with local authorities.
Caliber NXT
70
90
Input Rate (NG)
40,000 BTU/hr.
45,000 BTU/hr.
Input Rate (LP)
37,500 BTU/hr.
40,000 BTU/hr.
Orifi ce Size (NG) Front
.059 in./1.49 mm
.067 in./1.70 mm
Orifi ce Size (NG) Back
.110 in./2.79 mm
.110 in./2.79 mm
Orifi ce Size (LP) Front
.035 in./.89 mm
.035 in./.89 mm
Orifi ce Size (LP) Back
.063 in./1.60 mm
.067 in./1.70 mm
E. Non-Combustible Materials
Materials that are reported as passing
ASTM E 136, Stan-
dard Test Method for Behavior of Materials in a Vertical
Tube Furnace at 750° C,
shall be considered non-combus-
tible materials.
F. Combustible Materials
Materials made of or surfaced with wood, compressed pa-
per, plant fi bers, plastics, or other material that can ignite and
burn, whether fl ame proofed or not, or whether plastered or
unplastered shall be considered combustible materials.
