Flame Appearance; Cleaning/Servicing - USSC 2020L Owner's Operation And Installation Manual

CLEANING / SERVICING,
Periodic Cleaning
• Do not use cleaning fluid to clean logs or any part of heater.
• Logs - Brush with soft bristle brush or vacuum with brush attachment.
• Vacuum loose particles and dust from the front and rear burner, control, and piezo.
• Inspect burner's and air intake hole. Remove lint or particles with vacuum.
• External case should be dusted and wiped with a wet soapy cloth.
Annual Cleaning/Inspection
• Inspect and clean burner air intake holes.
• Inspect and clean all burner ports.
• Inspect ODS pilot for operation and accumulation of lint at air intake holes.
• Verify flame pattern and log placement for proper operation.
• Verify smooth and responsive ignition of main burner and rear burner.
In normal operation at full rate after 15 minutes the following flame appearance should be
observed.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper operation after servicing.

FLAME APPEARANCE

FLAMES
The flames behind log #1, and in front of log #2, should be yellow with a blue base. The flames
should not be impinging on either of the cross logs. (See Below, Figure 11)
#2
18
CONTINUED
FIGURE 11 - Flames, Natural Gas and LP Gas
#1