5
Operating Instructions and Owner’s Manual
Mr. Heater | MHGLLP B MHGLLP G
Orifice
All gaslamps are equipped with standard propane orifices. To use
gaslamps at elevations of 4500 feet or more above sea level, order
High Altitude Orifice, #20368 for propane gas.
warning:
Never touch drilled hole in orifice, as it is extremely
delicate. Use low-pressure compressed air to clean the
orifice. Pins, wire, even oil from hands, may disturb
proper gas flow. Replace orifice if in question.
Both MHGLLP B and MHGLLP G are ready to use with
PROPANE ONLY, at altitudes under 4,500 ft. The following
gas orifices are available for these other applications:
Fuel tYpe
gas OriFice
Propane (High Altitude)
F220368
Natural Gas Conversion Kit
F220369
Valve assembly.
The valve assembly must be straight on the wall
bracket. Over tightening bracket can cause tubing, flare nut or
orifice to become incorrectly aimed. Gas must flow through the
orifice; straight down the center of the Bunsen Burner Venturi.
recOMMended Maintenance
In order to keep your gaslamp operating safely and effectively,
performance maintenance at regular intervals. If your gaslamp has
been out of use for a period of time, examine it before lighting it.
When gaslamp is operating properly, gas consumption is
2400 B.T.U. per hour. One “pound” of propane gas produces
approximately 10 hours of light.
Permanent screws that attach valve assembly to wall plate should
never be loosened or removed. Removing valve assembly from wall
plate will void warranty.
Mantles.
Use Mr. Heater mantles designed for use with propane
gas only. Never use broken mantles. Inspect for carbon deposits
each time gaslamp is used. Clean or replace defective mantles
immediately. Use proper ceramic burner head and mantle
combination. (Example: “Tie-on” type burner head, #20352, with
tie-on mantles, #20353, or “Pre-formed” type burner head, #20337,
with pre-formed mantles, #20351.) Also see “Mantle Installation.”
Burner Head screen.
Screen must be in threaded end of burner
head. gaslamp will not function properly if screen is missing.
seal.
Seal is placed on threaded end of burner head. Seal and
burner head should be screwed securely into Bunsen Burner
Venturi (BBV.) The seal must be replaced any time the burner head
is removed after the lamp has been used.
Bunsen Burner Venturi (BBV)
. Unobstructed flow of combustion
air and ventilation air must be maintained. To ensure proper air
flow and gas mixture, the inside of the BBV must be clean and
free of any obstruction. Make a periodic visual check of the BBV.
Bunsen Burner Venturi (BBV)
cleaning instuctiOns
1. Remove burner head.
2. Pull a clean, dry cloth through BBV to clean out foreign
material.
3. Replace seal. Reassemble burner head and tighten securely.
4. It can also be cleaned by blowing it out with compressed
air.
5.
never attach a mantle directly to the BBV.
Note: Always replace seal if lamp has been previously lit.
Bunsen Burner Venturi (BBV)
Seal
Burner head
Burner head screen
Use “Pre-
formed” type
burner head,
#20337, with
pre-formed
mantles, #20351
“pre-formed” mantle
Use “Tie-on”
type burner
head, #20352,
with tie-on
mantles, #20353
“tie-On” mantle
