Product Specific & Important Safety Information; Appliance Certification; Btu Specifications; High Altitude Installations - Monessen Hearth Mojo Series Installation & Owner's Manual

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Product Specific and Important Safety Information
A. Appliance Certification
MODEL: MJ22NIF/PIF, MJ27NIF/PIF
Underwriters Laboratories, Inc. (UL)
LABORATORY:
TYPE: Unvented Room Heater
ANSI Z21.11.2-2016 (Unvented Application)
STANDARD:
ANSI Z21.60-2017∙CSA 2.26-2017 (Decorative
Gas Appliances for Installation in Solid-Fuel
Burning Fireplaces)
State or local codes may allow operation of this appliance
in a vented configuration. Check your local codes.
This product is listed to ANSI standards for "Unvented
Room Heaters" and applicable sections of "Gas Burning
Heating Appliances for Manufactured Homes" and "Gas
Fired Appliances for Use at High Altitude."
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.
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heater or as a decorative appliance. It should not
be factored as primary heat in residential heating calcula-
tions.
B. BTU Specifications
Maximum
Models
MJ22NIF
(0-2000 FT)
MJ22PIF
(0-2000 FT)
MJ27NIF
(0-2000 FT)
MJ27PIF
(0-2000 FT)
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
GAS PRESSURES
Inlet Minimum
Inlet Maximum
Gas Valve Manifold
Pressure Setting
Pilot Regulator
NATURAL GAS: An external regulator is required to reduce
supply pressure to a maximum of 10
systems operating at higher pressure.
PROPANE/LPG: An external regulator is required to reduce
supply pressure to a maximum of 13" w.c.
4
Minimum
Input Input Orifice
BTU/h BTU/h
29,000 21,000 #38
28,000 23,000 #52
38,000 27,000 #32
37,000 29,000 1.9 mm
NATURAL PROPANE (LP)
5.0" w.c. 11.0" w.c.
10.5" w.c. 13.0" w.c.
3.5" w.c. 10" w.c.
3.5" w.c. —
⁄ " w.c. on natural gas
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Monessen • Mojo Installation/Owner's Manual • 4623-900 Rev. D • 04/21
Pilot/ODS
The gas log heater is fitted with a specially designed safety
pilot (ODS assembly) which senses the amount of oxygen
available in the room and shuts the gas log heater off if the
oxygen level begins to drop below a satisfactory level. The
pilot can only be relit when adequate fresh air is available.
WARNING: This product and the
fuels used to operate this product (liquid
propane or natural gas), and the products
of combustion of such fuels, can expose
you to chemicals including benzene, which
is known to the State of California to cause
cancer and reproductive harm. For more
information go to: www.P65Warnings.
ca.gov.
C. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 feet elevation: Reduce input
rate 4% for each 1000 feet above 2000 feet.
Check with your local gas utility to determine proper
orifice size.
D. Non-Combustible Materials Specification
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in
a Vertical Tube Furnace at 750 ºC shall be considered
non-combustible materials,