Enviro DV50DX - Manual (Page 7)

7
Warning: Incorrect venturi adjustment may lead to improper combustion, which is a safety hazard.
Contact the dealer if there is any concern about the venturi adjustment.
NEVER USE AN OPEN FLAME FOR LEAK TESTING
A
IR
D
IVERTER
C
ONTROL
:
When the blower is on, the amount of air flow into the room can be
adjusted with the air diverter. When the lever is to the far left the room
receives the air, when the lever is to the far right the air goes out the duct
and when the lever in the middle the air goes to both the duct and the
room. Lever is found above the right end of the control panel, see Figure
5.
Operating Instructions
P
ILOT
L
IGHT
:
1. Turn off the gas to the fireplace. If not recently done, remove the glass and let the unit air out
for at least five (5) minutes to clear out any gas. Turn on gas to the heater. Leak test all joints
with soapy water. NEVER USE AN OPEN FLAME FOR LEAK TESTING.
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Figure 3. Pilot flame.
2. Start the pilot by pressing the gas control knob and turning it to PILOT.
While holding the gas control knob in, press the piezo ignitor several
times until the pilot light starts. Hold the gas control knob in for thirty
(30) seconds. Check that the pilot has fully engulfed the thermocouple
assembly (see Figure 3).
3. Start the main burner by turning the gas control knob to ON and then turn
the rocker switch to ON. Check that all burner ports have flame.
4. Leak test all gas joints again.
V ENTURI A DJUSTMENT :
The venturi adjustment lever is centered above the control panel.
The venturi allows the amount of air coming into the fireplace to be adjusted in order to accommodate
different climates and venting arrangements. Start the pilot and then the burner. Make sure the pilot
flame is burning normally and none of the burner ports are plugged. Let the fireplace burn for roughly
fifteen (15) minutes and then examine the flames.
The ideal flame will be blue at the base and light orange
above (see Figure 50). The flames should be of medium
height. If the flames look like this, no venturi adjustment
is needed. If the flames are fairly short and mostly blue,
the fireplace is getting too much air. Therefore, the air
shutter should be closed (push in) slightly until the correct
flames are achieved. Flames that are very orange, with
tall dark stringy tips are not getting enough air. Open
(pull out) the venturi until the flames clean up. If the
venturi is opened, then closed all the way, and the correct
flames cannot be attained, turn off the gas and contact
the dealer.
Figure 4. Venturi Adjustment Lever
Figure 5. Air Diverter