How to Start the Heater – One Burner Only
1.
Turn either the Rear or Front burner switch to the "ON" posi-
tion. If the Rear burner is powered, the Rear display light
will be illuminated. If the Front burner is powered, the Front
display light will be illuminated.
Rear burner only
Front burner only
2.
The light for the Exhaust Fan will illuminate as the heater pre-
pares to ignite.
3.
In 15 to 20 seconds, the appropriate igniter will glow red, and
the burner will light.
4.
The Blower light will become illuminated after 3 to 5 minutes.
The blower will automatically advance to a higher speed if it is
needed. The blower speed will be indicated on front control
panel.
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How to Change Burners – Switching Burners
If the heater is being operated on one burner, and it is desired to
change and operate the other burner, first turn the other burner
"ON" before turning the original burner "OFF".
The table below outlines the input rate of both front and rear burn-
ers.
Model
Input (BTUH)
Bay Window Mantis
Fireplace Mantis
Example: If the front burner is operating and then you would like
more heat in the room and would like to change to the rear burner,
first turn the rear burner switch "ON", wait a second, then turn the
front burner switch "OFF".
control in the heater will lock up, and will need to be reset.
How to Reset the Heater
If for any reason the heater needs to be reset, remove the front
louvered cover from the heater, then turn the Main Power Switch
to the "OFF" position. The heater must remain off for 5 minutes.
After waiting 5 minutes, the Main Power Switch can be moved to
the "ON" position. Burner operation will resume.
Humidifier Operation
The Mantis Power-Vent High-Efficiency Fireplace has an auto-
matic humidifier designed into the heater. As the heater operates,
condensate is created and collected inside the heater. The con-
densate is then transferred to a pan where it evaporates into the
air stream. The humidifier does not operate with every cycle.
While the condensate is being transferred to the pan, it is normal
to hear a slight hissing sound. The Humidifier light will be illumi-
nated while the condensate is being transferred.
Front Burner
Rear Burner
Input (BTUH)
9,000
19,000
13,000
15,000
If this sequence is not followed, the
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