Monessen Hearth PARLOR VENT-FREE PL20 - Manual (Page 5)

90D0093 5
Parlor Vent Free Fireplace
FP2552
PL20 controls
PRODUCT FEATURES
OPERATION
This unvented gas heater requires no outside venting and
burns cleanly with high heating efficiency.
This zero-clearance unvented gas heater can be installed
against (or recessed into) any wall that is accessible to a
gas line.
Figure 1 -
PL20 Controls
(Control Access Door Shown Open)
On/Off Switch
FP55
GAS PRESSURES
Input BTU/hr
Model Fuel Control Max. Min.
PL0NV Nat. Millivolt 0,000 14,500
PL0PV LP Millivolt 0,000 17,000
GAS SPECIFICATIONS
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
IGNITION CONTROLS
Piezo ignitor allows ignition of the pilot without the use of
matches or batteries.
Millivolt control has four (4) positions:
OFF - All gas to the gas logs is shut off at the
valve.
IGN - Valve position to light/maintain a standing
pilot.
ON - Valve position to turn ON/OFF log set with
remote switch/thermostat.
LOW/HI - Variable position to control flame height
(heat output). Both front and rear burners
are in operation to provide realistic glow
and yellow flame.
PILOT
The gas log heater is fitted with a specially designed safety
pilot light which senses the amount of oxygen available in
the room and shuts the gas log heater off if the oxygen level
begins to drop below a satisfactory level. The pilot can only
be relit when adequate fresh air is available.
THERMAL GENERATOR
The millivolt gas log pilot is fitted with a millivolt generator
to provide power for remote activation.
Hi/Lo Knob
Control Knob
Piezo Ignition
Light Switch
Natural Propane (LP)
Inlet Minimum 5.0” w.c. 11.0” w.c.
Inlet Maximum 10.5” w.c. 13.0” w.c.
Regulator Pressure
Setting 3.5" w.c. 10" w.c.
Pilot Regulator 3.5" w.c. --