Archgard 3400-DVTR20N-2 - Manual (Page 25)

Northfire 3400
25
ADJUSTING PRIMARY AIR
Before servicing, read the terms and conditions of the Archgard warranty at the back of the manual. Contact the
Archgard authorized dealer which you have purchased the appliance from and provide him with details of the
problem and the installation information which the installer has fill out at the back of the manual.
WARNING: Servicing of this appliance must be conducted by a qualified service technician. Improper
servicing, adjustment or alteration of this appliance may cause property damage, personal injury or loss of life.
All servicing should be conducted with the appliance cold. All replacement parts must be authorized by
Archgard for suitability.
SERVICING UNDER WARRANTY
FLAMES… (Reference only)
The left side shows correct adjustment. The
right side shows yellow sooty flames requir-
ing increase in shutter opening or cleaning of
shutter area due to lint buildup.
SERVICING
Note: the Shutter is set at the factory and normally only requires setting at higher altitudes.
 The primary air adjustment wing nut is located on the bottom side of the valve tray behind the lower louver
 Loosen the wing nut and slide the primary air shutter screw to the right to decrease primary air and to the left
to increase primary air. WARNING: Any Adjustment to Primary Air Should Only Be Attempted by a
Qualified, Licensed Gas Fitter or Service Person.
 Tighten the wing nut to the air shutter after adjustment.
Caution:
Wear gloves when adjusting the primary air with the appliance is hot.