Adjustments And Maintenance; Pilot Burner Adjustment; Venturi Adjustment - Monessen Hearth B-Vent Specialty Gas Fireplace System DESIGNER SERIES Installation And Operation Manual

A
DJUSTMENTS AND

Pilot Burner Adjustment

1. Adjust the pilot screw to provide a properly sized flame.
2. Do not adjust the pilot screw all the way out counterclockwise because it will leak gas.
Flame Switch
(For Units with 6CN and 6CLP Controls)
Your fireplace has been equipped with a thermocouple
which senses the flame and shuts of the gas flow to the
pilot and main burner in the event that the pilot flame is
unstable or becomes extinguished.
D : B
ANGER YPASSING THE THERMOCUPLE MAY LEAD TO AN EXPLOSION
WHICH COULD RESULT IN PERSONAL INJURY
Do NOT alter the wiring of the control. Replace the thermo-
couple only with components approved by the manufacturer.
Flame Switch
(For Units with 6CEN Controls)
Your fireplace has been equipped with a thermocouple
which senses the flame and shuts of the gas flow to the
pilot and main burner in the event that the pilot flame is
unstable or becomes extinguished.
D : B
ANGER YPASSING THE THERMOCUPLE MAY LEAD TO AN EXPLOSION
WHICH COULD RESULT IN PERSONAL INJURY
Do NOT alter the wiring of the control. Replace the thermo-
couple only with components approved by the manufacturer.

Venturi Adjustment

Natural gas models have a closed shutter. Opening the air
shutter will cause a more blue flame, but can cause flame
lifting from the burner ports. Propane gas models have an
air shutter set at
3/16 (.188) inch open. The same conditions as above apply
for propane gas.
N : A
OTE IR SHUTTER AJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
.
GAS INSTALLER
53D9019. Rev 3 11/07
M
AINTENANCE
.
.
3/8 TO 1/2 INCH
F 14
IGURE
13
F 12
IGURE
F 13
IGURE
PROPER PROPER
FLAME FLAME
ADJUSTMENT ADJUSTMENT
IGNITER-SENSOR