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Innovative Hearth Products
Superior
DRT/DRC3500 Series Direct-Vent Gas Fireplaces
TM
The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during
any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa).
Orifice Sizes—Sea Level to High Altitude
These fireplaces are tested and approved for installation at elevations of 0–4500 ft (0–1372 m) above sea level
using the standard burner orifice sizes (Table 5). For elevations above 4500 ft, contact your gas supplier or qualified
service technician.
Table 5: Burner Orifice Sizes, Elevation 0–4500 ft ( 0–1372 m)
* Standard size installed at factory
Deration
At elevations above 4500 ft, the amount of BTU fuel value delivered must be reduced by either:
•
•
NOTE: Flame breadth, height and width will diminish 4% for every 1,000 ft of altitude.
IN CANADA—CAN/CGA-2.17-M91 (HIGH ALTITUDE):
THE CONVERSION SHALL BE CARRIED OUT BY A MANUFACTURER'S AUTHORIZED REPRESENTATIVE,
IN ACCORDANCE WITH THE REQUIREMENTS OF THE MANUFACTURER, PROVINCIAL OR TERRITORIAL
AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE CAN/
CGA-B149.1 OR CAN/CGA-B149.2 INSTALLATION CODES.
REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
These fireplaces are approved for installation in the U.S. state of Massachusetts if the following additional
requirements are met:
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•
•
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Massachusetts Horizontal Vent Requirements
In the Commonwealth of Massachusetts, horizontal terminations installed less than seven (7) ft above the finished
grade must comply with the following additional requirements:
•
•
COLD CLIMATE INSULATION
For cold climate installations, seal all cracks around your fireplace with noncombustible material and wherever cold
air could enter the room. It is especially important to insulate outside chase cavity between studs and under floor on
which fireplace rests, if floor is above ground level. Gas line holes and other openings should be caulked or stuffed
with unfaced fiberglass insulation.
10
NOTE: Do not use loose, or blown-in insulation in the cavity surrounding the fireplace.
Model
35" Models
40" Models
45" Models
Using gas that has been derated by the gas company.
Changing the burner orifice to a smaller size as regulated by the local authorities having jurisdiction and by the
(USA) National Fuel Gas Code NFPA 54/ANSI Z223.1—latest edition or, in Canada, the CAN/CGA-B149.1 codes—
latest edition.
Install this fireplace in accordance with Massachusetts Rules and Regulations 248 C.M.R..
Installation and repair must be done by a plumber or gas fitter licensed in the Commonwealth of Massachusetts.
The flexible gas line connector used shall not exceed 36" (914 mm) in length.
The individual manual shutoff must be a T-handle type valve.
A hard wired carbon monoxide detector with an alarm and battery back-up must be installed on the floor level
where the gas fireplace is installed. The carbon monoxide detector must comply with NFPA 720, be ANSI/UL
2034 listed and be ISA certified.
A metal or plastic identification plate must be permanently mounted to the exterior of the building at a minimum height
of eight (8) ft above grade and be directly in line with the horizontal termination. The sign must read, in print size no
less than one-half (1/2) inch in size, GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.
Natural Gas
drill size
#44 (0.086")*
#42 (0.0935")*
#38 (0.1015")*
Installation
900298-00, 10/2014
Propane
drill size
#55 (0.052")*
#54 (0.055")*
#53 (0.0595")*
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