6
Approval & Codes
This appliance is certi
fi
ed to ANSI Z21.88/CSA 2.33
American National Standard / CSA Standard for Vented
Gas Fireplace Heaters for use in Canada and USA, and
to CGA 2.17-M91 High Altitude Standard in Canada.
This appliance is for direct vent installations.
This appliance complies with CSA P.4.1-15 Testing
method for measuring annual
fi
replace e
ffi
ciencies.
The installation must conform to local codes or, in the
absence of local codes, with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 or the Natural Gas and
Propane Installation Code CAN/CGA-B149.1. Only
quali
fi
ed licensed or trained personnel should install
this appliance.
This appliance must be electrically grounded in
accordance with local codes, or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA 70
or the Canadian Electrical Code, CSA C22.1.
Ratings
*High Altitude Installations
Input ratings are shown in BTU per hour and are
certi
fi
ed without deration for elevations up to 4,500
feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
installations must be in accordance with the current
ANSI Z223.1 and/or local codes having jurisdiction.
Heating value of gas in some areas is reduced to
compensate for elevation—consult your local gas
utility to con
fi
rm.
For installations at elevations above 4,500 feet
(1,370 m) in Canada, please consult provincial and/or
local authorities having jurisdiction.
Model
MF28JN
MF28JP
Gas
Natural
Propane
Altitude (Ft.)*
0-4,500 feet*
Input Maximum (Btu/h)
26,000
26,000
Input Minimum (Btu/h)
6,500
14,500
Manifold Pressure (in w.c.)
3.75”
9.0”
Minimum Supply Pressure (in w.c.)
5.0”
11.0”
Maximum Supply Pressure (in w.c.)
11.0”
14.0”
Main Burner Injector Marking
82-750
92-300
Pilot Injector Marking
35
27
Min. Rate By-Pass Screw
125
125
Supply Gas
Heater engine MF28JN is used with natural gas.
Heater engine MF28JP is used with propane gas.
The supply pressure must be between the limits shown
in the Ratings table.
The supply connection is 3/8” NPT female.
Gas Conversion
The MF28 stove is o
ff
ered with natural gas or propane
gas. It can be converted from one gas to the other. See
installation manual supplied with the gas conversion kit
for more information.
Combustible Materials
Combustible materials are de
fi
ned as materials made
of or surfaced with wood, compressed paper, plant
fi
bers, or other materials that are capable of being
ignited and burned.
Such material shall be considered combustible even
though
fl
ame-proofed,
fi
re-retardant treated, or
plastered.
Electrical
The Madrona does not require an electrical power
source unless
fi
tted with the optional circulating fan
555CFK—see page 18.
Hearth Requirements
This appliance is approved for installation directly on
combustible wood
fl
ooring. If installed directly on
carpeting, vinyl or soft combustible
fl
oor other than
wood, it must be installed on a metal or wood panel
covering a minimum surface of 15 inches deep by 28
inches width.
Specifications
3/8” N.P.T.
Female
3/8” N.P.T.
8 mm O.D.
tubing
Flare
fi
tting
