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LOG PLACEMENT
WARNING
The positioning of the logs is critical to the safe and
clean operation of this heater. Sooting and other
problems may result if the logs are not properly
and firmly positioned in the appliance. Never add
additional logs or embellishments such as pine
cones, vermiculite or rock wool to the heater. Only
use the logs and 2G-RW rock wool (for NB18), or
3G-RW rock wool (for NB24) supplied with the unit.
Failure to position the parts in accordance with
diagrams below or to use only parts specifically
approved for this heater may result in property
damage or personal injury.
NOTE: This unit is supplied with 10 ceramic fiber logs. Do
not handle the logs with bare hands. Always wear gloves
to prevent skin irritation from ceramic fibers. After han-
dling the logs, wash your hands gently with soap and wa-
ter to remove any traces of fibers.
ROCK WOOL PLACEMENT
1. Place dime size pieces of rock wool evenly over small
burner ports starting at pilot and down each side of
burner. Avoid placing rock wool on slots on either side
of burner between the air defectors. Figure 16. Wash
hands after placing rock wool. Skin irritation may oc-
cur.
Pilot
Grate Tines
Figure 16 -
Place Rock Wool
Monessen • NBST27 Gas Log Set Installation/Owner's Manual • 81D3032 • Rev A • 08/16
Grate Tine
Rockwool
Rock Wool
Horizontal Grate Bar
LG648
NBST rockwool
DO NOT sprinkle volcanic rock on the logs,
around the pilot, or on or near burners. This
may cause sooting. Place volcanic rock only
on the floor of the fireplace.
During initial operation of the new heater,
new burning logs and/or rock wool will give
off a paper burning smell and orange flames
will be present. Simply open the windows
for a few hours to vent the odor.
LOG PLACEMENT
Begin on Side A, valve on left as you face the fireplace.
1. Place log #1 on burner by aligning two (2) holes on
bottom of log with two (2) pins on burner. The tallest
part of the log is on the valve side of burner. Gently
push log down until it comes in contact with burner sur-
face. Figure 17
Control
Valve
Figure 17 -
Place Log #1
Horizontal
Grate Bar
2. Place log #2 on left grate tines by aligning the 'V'
notches in the log with grate tines. The groove on the
bottom of the log should be firmly seated on the grate
bar. Figure 18
Figure 18 -
Place Log #2
NBST27 Unvented Gas Log Set
Log 1
LG650
NBST log 1
Log #2
LG651
NBST log 2
15
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