MHSC NBST27, Installation Instructions Manual, Page: 16 / 32

16 81D3032
NBST27 Unvented Gas Log Set
LOG PLACEMENT
W
ARNING
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 rock wool (EB-RW), and flickering
embers (FBE-.1G) 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.
Before you begin - 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 handling the logs, wash your hands gently with soap
and water to remove any traces of fibers.
CAUTION
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.
ROCk WOOL and EMBER 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 17 . Wash
hands after placing rock wool. Skin irritation may oc-
cur.
2. Place flickering bright embers (FBE-.1G) before plac-
ing logs on burner. Pull embers apart into small strands
and place on top of existing rock wool on both sides of
burner from the air deflectors to the end of each burner
where they can be seen. Try to avoid stacking these
embers on top of each other. Use smaller strands for
maximum effect. Use as much as needed to achieve
desired effect.
Figure 18
LG649
NBST embers
Flickering
Bright Embers
Rock wool
LG649
Figure 18 -
Place Flickering Bright Embers
LG648
NBST rockwool
Pilot
Rockwool
Rock Wool
LG648
Figure 17 -
Place Rock Wool
Horizontal
Grate Bar
Grate Tine
Grate Tines
Horizontal
Grate Bar