Monessen Hearth DBX24C Product Features, operation, GAS pressures, Gas Specifications, Pilot

PRODUCT FEATURES DFX & DBX Series Vent Free Fireplaces

Fireplace

Screen

	Control
	Knob
	Piezo
	Ignition
Figure 1 -	On/Off Switch
	FP2507

Unvented Gas Heater

(Control Access Door Shown Open)

This vent-free fireplace must be mounted on the floor or 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.

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.

33D4047

Gas Specifications

			Input BTU/hr
Model	Fuel	Control	Max.	Min.
24DFXNMC	Nat.	Manual	22,000	15,000
24DFXPMC	LP	Manual	22,000	17,000
24DFXNVC	Nat.	Millivolt	22,000	17,000
24DFXPVC	LP	Millivolt	22,000	17,000
32DFXNVC	Nat.	Millivolt	26,000	20,000
32DFXPVC	LP	Millivolt	26,000	20,000
DBX24NTC	Nat.	T-Stat	10,000	--
DBX24PTC	LP	T-Stat	10,000	--

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.

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.

Thermal Generator

The millivolt gas log pilot is fitted with a millivolt generator to provide power for remote activation.