Burner On/Off Switch
Top View |
| Burner |
| Front | On/Off |
| Switch | |
|
|
Figure 31
SIT Millivolt Appliance Checkout
The pilot ßame should be steady, not lifting or ßoating. Flame should be blue in color with traces of orange at the outer edge. The top 3/8" (10 mm) at the pilot generator (thermopile) and the top 1/8" minimum (tip) of the quick drop out thermocouple should be engulfed in the pilot ßame. The ßame should project 1" (25 mm) beyond the hood at all three ports (Figure 32).
Replace logs if removed for pilot inspection.
To light the burner, rotate the gas valve control knob counterclockwise to the ÒONÓ position then turn ÒONÓ the ON/OFF rocker switch.
MILLIVOLT | Hood Igniter Rod |
Thermocouple |
|
| 3/8" Min. |
| (9 mm) |
Pilot |
|
Nozzels |
|
Thermopile
Figure 32 - Proper Pilot Flame Appearance
Step 15. BURNER ADJUSTMENTS
Flame Appearance and Sooting
Proper ßame appearance is a matter of taste. Generally, most people prefer the warm glow of a yellow to orange ßame.
Appliances operated with air shutter openings that are too large will exhibit ßames that are blue and transparent. These weak, blue and transparent ßames are termed anemic. If the air shutter opening is too small sooting may develop.
Figure 33 - Burner Flame Appearance
Sooting is indicated by black puffs developing at the tips of very long orange ßames. Sooting results in black deposits forming on the logs, appliance inside surfaces and on exterior surfaces adjacent to the vent termination. Sooting is caused by incomplete combustion in the ßames and lack of combustion air entering the air shutter opening. To achieve a warm yellow to orange ßame that does not soot, the shutter opening must be adjusted between these two extremes.
No smoke or soot should be present. Reposition the logs if ßames impinge on any of them. If the logs are properly positioned and sooting conditions exist, the air shutter opening on the main burner tube should be adjusted. Normally, the more offsets in the vent system, the greater the need for the air shutter to be opened further.
IMPORTANT: ENSURE THAT THE FRONT GLASS PANEL IS IN PLACE AND SEALED DURING ADJUSTMENT.
WARNING: AIR SHUTTER ADJUSTMENT SHOULD ONLY BE PERFORMED BY A QUALIFIED PROFESSIONAL SERVICE TECHNICIAN.
Burner Adjustment
CAUTION: THE ADJUSTMENT ROD AND NEARBY APPLIANCE SURFACES ARE HOT. EXERCISE CAUTION TO AVOID INJURY WHILE ADJUSTING FLAME APPEARANCE.
Initially, always position the air shutter to the factory setting as shown in Figure 34 (adjust- ment rod is located in the lower control area). This can be done by moving the adjustment rod up or down accordingly. Allow the burner to operate for at least 15 minutes. Observe the ßame continuously. If it appears weak or sooty as previously described, adjust the air shutter to a more open position until the desired ßame appearance is achieved.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
The adjustment rod and associated adjustable airshutterispatentedtechnology.Flameadjustments can be made quickly and accurately to taste without the need of disassembling the appliance and waiting for 30 minutes after each adjustment.
Burner Air Shutter Adjustment
Adjusting Set Screw
Adjustment Rod Up
(1/8" Open Position)
Burner Tube
Air Shutter
Adjustment Rod Down (full open position) 
Main Burner Factory Air Shutter
Opening Setting - Inches (millimeter)
Model | Natural | Propane | |
| Gas | Gas | |
|
|
| |
CI1500DVF | 5/16" | 5/8" | |
(7.93 mm) | (15.9 mm) | ||
| |||
|
|
| |
CI2500DVF | 1/2" | 5/8" | |
(12.7 mm) | (15.9 mm) | ||
| |||
|
|
|
Figure 34
Air Shutter Adjustment Guidelines:
If the burner ßame appearance differs greatly from what is shown on this page (see Figure 33), some adjustment from standard for the air shutter gap may be necessary (to compensate for variables in the installation and fuel such as, BTU value / composi- tion, gas pressure, speciÞc gravity of gas, altitude, etc.).
The following chart is provided to aid you in achieving the correct air shutter adjustment for your installation.
Air Shutter Adjustment Guidelines:
Amount of | Flame | Air Shutter | |||||||
Primary Air | Color | Adjustment | |||||||
If air shutter is | Flame will | Air shutter | |||||||
closed too far | be yellow | gap should be | |||||||
|
|
|
|
|
|
|
|
| increased |
|
|
|
|
|
|
|
|
| |
If air shutter is | Flame will | Air shutter | |||||||
open too far | be blue | gap should be | |||||||
|
|
|
|
|
|
|
|
| decreased |
|
|
|
|
|
|
|
|
| |
Table 10
When satisÞed that the appliance operates properly, proceed to Þnish the installation. Leave the control knob in the ON position and the on/off switch in the OFF position.
15