Product Features; Gas Specifications; Gas Pressures; Ignition Controls - Monessen Hearth PH18 Installation And Operating Instructions Manual

PRODUCT FEATURES

GAS SPECIFICATIONS

Model Fuel
PH18NM Nat.
PH18NV Nat.
PH24NM Nat.
PH24NV Nat.
PH18PM LP
PH18PV LP
PH24PM LP
PH24PV LP

GAS PRESSURES

Manual Regulator Pressure
Millivolt Regulator Pressure
Millivolt Pilot Regulator
Max. Gas Inlet Pressure
Min. Gas Inlet Pressure
NOTE: An external regulator is required to reduce supply
pressure to a maximum of 13.0" w.c. for LP systems.
Monessen • PH18/24 Installation/Owner's Manual • 65D2035 • Rev G • 03/2020
Min.Input Max. Input
Control BTU/h BTU/h
Manual 18,000 30,000
Millivolt 26,000 30,000
Manual 19,000 36,000
Millivolt 24,000 36,000
Manual 22,500 30,000
Millivolt 24,500 30,000
Manual 25,000 36,000
Millivolt 29,000 36,000
Natural Propane (LP)
4.0" w.c. 10.0" w.c.
3.5" w.c. 10.0" w.c.
3.5" w.c. n/a
10.5" w.c. 13.0" w.c.
5.0" w.c. 11.0" w.c.

IGNITION CONTROLS

Piezo ignitor allows ignition of the pilot without the
use of matches or batteries.
Manual 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.
HI/LOW - Variable position corresponding to
desired flame height.
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.
HI/LO - Variable position to control flame
height (heat output).

PILOT/ODS

The gas log heater is fitted with a specially designed
safety pilot (ODS assembly) 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
(thermopile) generator to provide power for remote
activation.
PH Gas Logs
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