5
VFF Vent Free Fireplace System
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev F • 02/19
PRODUCT FEATURES
OPERATION
This unvented gas heater requires no outside venting
and burns cleanly with excellent heating efficiency. As a
zero-clearance appliance, it can be installed against (or
recessed into) any wall that is accessible to a gas line.
Piezo Ignition
Fireplace
Screen
Control Knobs
Figure 1.
VFF Shown with Control Access Door Open
On/Off Switch
GAS PRESSURES
Control
Fuel
Millivolt and IPI
Regulator Pressure
Nat.
3.5" w.c.
Pilot Regulator
Nat.
3.5" w.c.
Max. Inlet Pressure
Nat.
10.5" w.c.
Min. Inlet Pressure
Nat.
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.
GAS SPECIFICATIONS AND ORIFICE SIZES
NOTE:
For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
MODEL
FUEL CONTROL
MAX
BTU
MIN
BTU
ORIFICE
SIZE
VFF32CNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF32CPV
LP
MILLIVOLT 36,000 28,000
#49
VFF32CNI
NAT
IPI
37,000 25,000 3.00mm
VFF32CPI
LP
IPI
36,000 28,000
#49
VFF32LNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF32LPV
LP
MILLIVOLT 36,000 28,000
#49
VFF32LNI
NAT
IPI
37,000 25,000 3.00mm
VFF32LPI
LP
IPI
36,000 28,000
#49
VFF36CNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF36CPV
LP
MILLIVOLT 36,000 28,000
#49
VFF36CNI
NAT
IPI
37,000 25,000 3.00mm
VFF36CPI
LP
IPI
36,000 28,000
#49
VFF36LNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF36LPV
LP
MILLIVOLT 36,000 28,000
#49
VFF36LNI
NAT
IPI
37,000 25,000 3.00mm
VFF36LPI
LP
IPI
36,000 28,000
#49
IGNITION CONTROLS (MILLIVOLT ONLY)
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).
THERMAL GENERATOR (MILLIVOLT ONLY)
The millivolt gas log pilot is fitted with a millivolt generator
to provide power for remote activation.
PILOT
The gas log heater is fitted 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.
