Slider/damper set-up, Installation – Enviro 50-1574 User Manual

Page 21

Installation

LIDER

AMPER

-U

This is used to regulate the airflow through the pellet stove. The slider damper should be set

by a trained technician using magnehelic.
The slider damper is located behind the left side panel. To open the left side panel, undo the one screw

located in the upper front corner of the cabinet side between the louvers. Also loosen three screws down

the back of the side panel.

Air Intake Box

Exhaust Channel

Slider Damper

Exhaust Blower

Figure 26: Slider/Damper Plate in Unit.

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

• If the flame is in the middle of these two characteristics with a bright yellow/orange, active flame

with no black tips then the air is set for proper operation (see Figure 27).

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).

IMPORTANT: Taking a reading of vacuum pressure inside the firebox with a magnehelic gauge should 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 using a Magnahelic Pressure Gauge to measuring the pressure in the

firebox. The best settings are a reading of approximately 27.4 - 29.9 Pa (0.11 - 0.12 inches of

water column) on the high fire setting. Some fuels may require higher or lower settings. The

reading can be taken from the 3 mm (1⁄8”) hole located on the front of the unit below the ash shelf.

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.

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.

Figure 27: Efficient Flame.