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VFI33 Vent Free Gas Fireplace System
20307670
5
OPERATION
This unvented gas heater requires no outside venting and
burns cleanly with high heating effi ciency.
PRODUCT FEATURES
Figure 1 -
Unvented Gas Heater with Control Access Door Open
GAS PRESSURES
Control Fuel Millivolt T-stat
Regulator Pressure Natural 3.5" w.c.
Pilot Regulator Natural 3.5" w.c.
Max. Inlet Pressure Natural 10.5" w.c.
Min. Inlet Pressure Natural 5.0" w.c.
Regulator Pressure LP 10.0" w.c.
Max. Inlet Pressure LP 13.0" w.c.
Min. Inlet Pressure LP 11.0" w.c.
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 and EcoLogic
®
2.0 controls have 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 fl ame height
(heat output). Both front and rear burners
are in operation to provide realistic glow
and yellow fl ame.
PILOT
The gas log heater is fi tted with a specially designed safety
pilot light (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 re-lit when adequate fresh air
is available.
THERMAL GENERATOR
The millivolt gas log pilot is fi tted with a millivolt generator
to provide power for remote activation.
VFI33 CONTROLS
GAS SPECIFICATIONS & ORIFICE SIZE
MODEL FUEL CONTROL
MAX. INPUT
(BTU/h)
MIN. INPUT
(BTU/h)
ORIFICE
SIZE
VFI33LNV NAT. Millivolt
28,000 19,000 #38
VFI33LPV LP. Millivolt
27,000 22,000 #52
VFI33CNV NAT. Millivolt 28,000 19,000 #38
VFI33CPV LP. Millivolt
27,000 22,000 #52
VFI33LNI NAT. IPI 28,000 19,000 #38
VFI33LPI LP. IPI 27,000 22,000 #52
VFI33CNI NAT. IPI 28,000 19,000 #38
VFI33CPI LP. IPI
27,000 22,000 #52
COLD CLIMATE OPTION (IPI Models Only)
NOTE: If you live in a cold climate, seal all cracks around
your appliance and wherever cold air could enter the room,
with noncombustible material. It is especially important to
insulate the outside chase cavity between the studs and
under the fl oor on which the appliance rests, if the fl oor is
above ground level.
Your fi replace is equipped with an intermittent pilot ignition
(IPI) control. An IPI control with a standing pilot option
provides the dual benefi t of an economical and environ-
mentally responsible product and one which lights easily
even in the coldest climates. When in intermittent pilot
Piezo Ignitor
Control Knobs
Surround
On/Off Switch
Blower
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