Mendota DXV-60, Installation And Operating Instructions Manual

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85-03-01115 DXV35 TIMBERFIRE Page 76
6.4 OVER FIRING OR UNDER FIRING OF BURNER
NEVER "over fire" or “under - fire” units by increasing or decreasing the main orifice sizes or by adjusting gas pressure to increase
BTUH above nameplate specifications.
Over firing can cause permanent damage to firebox and deterioration of parts and void the warranty.
Under-firing can potentially cause delayed ignition and lead to property loss and person injury and will void the warranty.
If you are using a “backyard” Natural Gas well as the gas source, you must submit formal gas analysis data
sheets to Mendota Fireplaces for review and calculation of proper main burner orifice sizes prior to first
firing. It is known
that unpurified Natural Gas from “backyard” wells can contain high energy levels causing
over firing. Further, unpurified gas can contain high levels of Sulphur and other compounds which can
damage the burner materials and the ceramic glass. Use of unpurif ied gas will void the warranty for this
product.
6.5 PILOT OUTAGE AND RE-LIGHTING
If pilot goes out, be sure to wait a minimum of five minutes before attempting to re -light. If lockout occurs
frequently, contact you Mendota Dealer for diagnosing the problem.
Frequent lockout can be caused by many factors and must be properly diagnosed, and the primary cause identified. It should
never be assumed that the ignition control system is faulty without proper diagnosis.
6.6 BURNER FLAME HEIGHTS REFERENCE DIAGRAM
Figure 6-2 Burner Flame Heights: This image provides a visual
reference for the burner flames burning at maximum height after
the burners have been operating for 30 minutes or longer. A
normal rear flame will be 1 to 2 inches above the rear log top edge.
This, however, is dependent on the gas type, air shutter opening
setting and vent system configuration. Actual flame heights can be
slightly higher or lower when compared to this reference image.