Regency Liberty L390PB Medium Gas Insert - Manual (Page 15)

L 390 PB-2 / HZI 390 PB-2 Direct Vent Gas Insert
15
INSTALLATION
Air Shutters are required to increase or decrease the amount of air that is
mixed with the fuel before combustion. This will have an affect on how well
the fuel combusts and how the fl ame physically appears.
Low primary air will leave a taller, yellower fl ame while higher primary air will
leave a lower, bluer fl ame.
This setting is largely for appearance, however, not enough primary air may
lead to carboning, sooting or a fl ame that reaches the top of the fi rebox.
Situations that may require more primary air are; units that are burning
propane, units installed at higher elevations or units that are run on high
most of the time.
The L390PB / HZI390PB is equipped with an air shutter that is accessible
from outside the fi rebox and can be adjusted during operation.
Aeration adjustments should only be made after the unit has been on for 30
minutes to 1 hour.
Slide the Air Shutter Lever towards you to increase the primary air setting.
Slide the Air Shutter away from you to decrease the primary air setting.
Below you will see a chart showing the minimum primary air settings.
These are set from the factory, but due to fuel conversions or installation
conditions, the air setting may need to be adjusted.
Close Open
Unit Fuel Type Min. Air Setting
L390PB NG 3/16" (5mm)
L390PB LP 1/4" (6mm)
HZI390PB NG 3/16" (5mm)
HZI390PB LP 1/4" (6mm)
AIR SHUTTER ADJUSTMENT
Air Shutter
Burner Mounting
Bracket
Gas Orifice
Air Shutter Lever
Firebox cut-away
to show location
of the Air Shutter
1) Slide the Air Shutter Lever towards you to increase the primary air set-
ting.
2) Slide the Air Shutter away from you to decrease the primary air setting.
Below you will see a chart showing the minimum primary air settings.
CAUTION: Carbon will be produced if air shutter is closed too much.
Note: any damage due to carboning resulting from improperly setting
the aeration controls is NOT covered under warranty.
Note: Aeration Adjustment should only be performed by an authorized
Regency Installer at the time of installation or service.
Push to close - Pull to open
Unit Front
Unit Back
First Fire & Aeration