Owner`s manual

27020-3-0410 Page 41
FAN OPERATION
The 3-speed main convection fan will automatically start approximately 3 to 5 minutes after the heater has warmed up.
Note: The 3-speed main convection fan is automatically controlled by heat build-up in the rebox and will operate on three preset
speeds. Depending on the temperature, the L.E.D lights (Page 39, Figure 60) for the fan will light up. The bottom L.E.D light (Figure
60F) is low speed setting, and middle L.E.D lights (Figure 60G) is the medium speed setting, the bottom, middle and top L.E.D lights
(Figure 60H) is the high-speed setting.
Note: The fan will operate totally independent of burner setting - it is controlled by temperature only.
HEATER SHUT DOWN INSTRUCTIONS
Turn medium burner switch (Figure 58) and low burner switch (Figure 59) to the “OFF” position.
Note: Do not cut main electrical supply to the heater after the heater has been switched off to stop main fan operating. Main fan will
stop operating automatically after the heater has cooled down sufciently.
AUTOMATIC HUMIDIFIER OPERATION
Most gas heaters dry out the air in the room. The Mantis has
ingeniously solved this problem with an Automatic Humidier.
Gas contains moisture which is normally expelled out the ue or
chimney after combustion. But the Mantis is so efcient by taking
92% of the heat out of the burnt gases that the moisture drops out
and condenses in the back of the heater. This water is collected
in a tank which is then pumped up to a stainless steel condensate
tray, where it evaporates in the stream of hot air which is blowing
into your home. Air humidity is automatically restored!
1. The amount of condensate build up in the water sump is de-
pendent on outside temperature, length and height of the ue
pipe. The automatic humidier can operate from approxi-
mately 10 minute to 6 hour intervals, depending on ambient
temperature, style and type of ue. Long single vertical ues
can cause the humidier to come on more often depending on
heater settings.
2. When the automatic humidier is engaged and is transferring
the condensate into the holding tank, a hissing sound may be
noticeable. This occurs when the condensate enters the hold-
ing tank and is quite normal. The duration of the sound may
vary from 3 to 30 seconds until the holding tank has been
lled with the condensate.
3. When the automatic humidier pump comes on to pump con-
densate into the stainless steal tray (located on the top of the
heater), the L.E.D. light (Page 39, Figure 60B) on the front
panel will light up and ash while the condensate pump is
operating, and then extinguish after the pump has stopped
operating. This means water has been pumped into the tank,
and the automatic humidier operation will begin.
Figure61