Slider / Damper Set-Up - Regency Greenfire GFI55 Technical Manual

installation
THE SLIDER / DAMPER MUST BE SET AT TIME OF INSTALLATION,
IT IS USED TO REGULATE THE AIRFLOW THROUGH THE PELLET
STOVE.
A Qualified Service Technician or Installer must set the Slider
Damper.
The slider damper is used to regulate the airflow through the pellet stove
and is located behind the left cab side (refer to Figure 39). The door must
be open for the cab side to be removed on all models. On freestanding
model loosen the two T-20 torx screws, one above and one below hinge,
swing open left panel to access. On insert model remove the two (2) T-20
torx screws on the front, one above and one below hinge, and the one
T-20 at the top of the cab side under the top front.
The combustion exhaust blower is a variable speed blower controlled by
the heat output button. This blower will decrease the vacuum pressure
inside the stove and as the heat output button is turned down. The vacuum
pressure inside the firebox will increase as the combustion exhaust blower
increases in speed (higher heat output setting).
If the fire should happen to go out and the heat output indicator has been
set on the lowest setting, the Slider Damper should be pushed in slightly,
decreasing the air in the firebox.
If, after long periods of burning, the fire builds up and overflows the burn pot
or there is a build up of clinkers, this would be a sign that the pellet quality
is poor, this requires more primary air, the slider damper must be pulled out
to compensate. Pulling the slider damper out gives the fire more air.
20 | Poêle et encastrable à granules Greenfire GF55 / GFI55 - Manuel technique

SLIDER / DAMPER SET-UP

Exhaust Blower
Note: Some parts
have been removed in order
to see components more clearly.
Figure 39: Slider / Damper
The easiest way to make sure that an efficient flame is achieved is to
understand the characteristics of the fire.
• A tall, lazy flame with dark orange tips requires more air – Open slider
(pull out) slightly.
• A short, brisk flame, like a blowtorch, has too much air – Close slider
(push in) slightly.
• If the flame is in the middle of these two characteristics with a bright yel-
low/orange, active flame with no black tips then the air is set for proper
operation.
Exhaust
Channel
Slider
Damper
Figure 41: Hole for Pressure test with Magnehelic Gauge.
SPECIAL NOTES:
Pellet quality is a major factor in how the Pellet stove will operate. If the
pellets have a high moisture content or ash content the fire will be less
efficient and has a higher possibility of the fire building up and creating
clinkers (hard ash build-up).
Taking a reading of vacuum pressure inside the firebox with a magnehelic
gauge can be used to set the slider for best combustion. The slider damper
should be set only on a hot stove (operating for thirty (30) minutes or more)
by placing a Magnahelic Pressure Gauge in the firebox. The reading can
be taken from the ⅛" (3 mm) hole located in the front of the firebox under
the door (see Figure 41). The best settings are a reading of approxi-
mately 0.1" to 0.12" of water column on the high fire setting. Some
fuels may require higher or lower settings.
Figure 40: Efficient Flame.