Monessen Hearth dfx dbx24c User Manual
33D4047
5
DFX & DBX Series Vent Free Fireplaces
PRODUCT FEATURES
This vent-free fireplace must be mounted on the floor or
on the optional fireplace hearth.
on the optional fireplace hearth.
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.
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.
FP2507
VFS DBX controls
VFS DBX controls
Piezo
Ignition
Ignition
Fireplace
Screen
Screen
Control
Knob
Knob
Figure 1 -
Unvented Gas Heater
(Control Access Door Shown Open)
Unvented Gas Heater
(Control Access Door Shown Open)
On/Off Switch
FP507
GAS PRESSURES
Manual &
Control
Fuel
T-stat
Millivolt
Regulator Pressure
Nat.
4.0” w.c.
3.5” w.c.
Pilot Regulator
Nat.
n/a
3.5” w.c.
Max. Inlet Pressure
Nat.
10.5” w.c.
10.5” w.c.
Min. Inlet Pressure
Nat.
5.0” w.c.
5” w.c.
Regulator Pressure
LP
10.0” w.c.
10.0” w.c.
Max. Inlet Pressure
LP
13.0” w.c.
13.0” w.c.
Min. Inlet Pressure
LP
11.0” w.c.
11.0” w.c.
Input BTU/hr
Model
Fuel Control
Max. Min.
4DFXNMC Nat.
Manual
,000 15,000
4DFXPMC
LP
Manual
,000 17,000
4DFXNVC
Nat.
Millivolt
,000 17,000
4DFXPVC
LP
Millivolt
,000 17,000
3DFXNVC
Nat.
Millivolt
6,000 0,000
3DFXPVC
LP
Millivolt
6,000 0,000
DBX4NTC
Nat.
T-Stat
10,000
--
DBX4PTC
LP
T-Stat
10,000
--
GAS SPECIFICATIONS
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
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.
Manual control has four (4) positions:
matches or batteries.
Manual 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.
Thermostat control has three (3) positions:
OFF - All gas to the gas logs is shut off at the
valve.
IGN - Valve position to light/maintain a standing
pilot.
LOW/HI - Variable position corresponding to desired
temperature.
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.
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.
to provide power for remote activation.