Monessen VFF32LI, VFF36LI, VFF32LV, VFF36LV, VFF32CI, VFF36CI, VFF32CV, VFF36CV Installation and Instructions
Page 1
VFF Vent Free Fireplace System
Installation & Operating Instructions
Models: VFF32LI, VFF36LI, VFF32LV, VFF36LV,
VFF32CI, VFF36CI, VFF32CV, VFF36CV
WARNING: If the information in this
manual is not followed exactly, a re or
explosion may result causing property
damage, personal injury or loss of life.
• Do not store or use gasoline or other
ammable vapors and liquids in the
vicinity of this or any other appliance.
• WHAT TO DO IF YOU SMELL GAS
– Do not try to light any appliance.
– Do not touch any electrical switch; do
not use any phone in your building.
– Leave the building immediately.
– Immediately call your gas supplier from
a neighbor's phone. Follow the gas
supplier's instructions.
– If you cannot reach your gas supplier,
call the re department.
• Installation and service must be performed
by a qualied installer, service agency or
the gas supplier.
This is an unvented gas-red heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air must be provided. Refer to Page 8.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future
reference.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 2
CONTENTS
VFF Vent Free Fireplace System
Thank you and congratulations on your purchase of a Monessen Fireplace.
PLEASE READ THE INSTALLATION AND OPERATION INSTRUCTIONS
BEFORE USING THE APPLIANCE.
IMPORTANT: Read all instructions and warnings carefully before starting installation.
Failure to follow these instructions may result in a possible re hazard and will void the warranty.
Important Safety Information ...................................... 3
Codes ....................................................................... 4
Product Features .......................................................... 5
Operation ................................................................. 5
Gas Pressures ......................................................... 5
Gas Specications and orice sizes ......................... 5
Ignition Controls – Millivolt ........................................ 5
Thermal Generator – Millivolt .................................... 5
Pilot .......................................................................... 5
Cold Climate Option ................................................. 6
Fireplace and Framing Dimensions ............................ 7
Pre-Installation Information ......................................... 8
Getting Started ......................................................... 8
What You Will Need For Installation ......................... 8
Adequate Combustion and Ventilation Air ................ 8
Fireplace Installation .................................................... 9
Fireplace Location .................................................... 9
Clearances ............................................................. 10
Framing and Anchoring ...........................................11
Securing Heater to Floor or Hearth .........................11
Gas Line and Pressure............................................... 12
Connecting the Gas Line ....................................... 12
Checking Gas Pressure – Millivolt control .............. 12
Checking Gas Pressure – IPI Control ..................... 13
Final Installation ......................................................... 13
Remove Screen ..................................................... 13
Install Canopy ........................................................ 13
Electrical Wiring – Millivolt ......................................... 14
Connect Optional Wall Switch or Thermostat ........ 14
Connect Remote Receiver ..................................... 15
Check System Operation ....................................... 15
Operating Instructions – Millivolt .............................. 16
For Your Safety Read Before Lighting ................... 16
What to do if You Smell Gas .................................. 16
Lighting for the First Time ...................................... 16
Lighting Pilot for the First Time .............................. 17
Lighting Pilot .......................................................... 17
Lighting Burner ....................................................... 18
To Turn Off Gas ...................................................... 18
Electrical Installation – Ipi .......................................... 19
Electrical Wiring ..................................................... 19
Optional Forced Air Kit (BLOTMC) ......................... 19
Junction Box Wiring ............................................... 19
Wall Switch Installation .......................................... 20
IPI System Wiring Diagram .................................... 20
Operating Instructions – Ipi ........................................ 21
Operation and Indications ...................................... 21
For Your Safety Read Before Lighting .................... 22
What to do if You Smell Gas .................................. 22
Operating Instructions ............................................ 22
To Turn Off Gas to Appliance ................................. 22
Log and Media Placement ......................................... 23
Cast Iron Grate Installation ..................................... 23
Rock Wool Placement ............................................ 23
Install Berkley Oak Logs ........................................ 24
Place the Decorative Rock ..................................... 25
Install Highland Oak Logs ...................................... 25
Place the Decorative Rock ..................................... 26
Install Kentucky Wildwood Logs ............................ 26
Install Beachcomber and Riverwood Logs..............28
Install Split Timber/Stoney Creek Logs .................. 29
Glass Only Placement ........................................... 29
Flame Appearance ...................................................... 31
Pilot and Burner Flame Appearance ...................... 31
Checking the Pilot Flame ....................................... 31
Checking Burner Flame ......................................... 31
Operating Instructions ............................................ 31
Operating Instructions ............................................... 32
For Your Safety Read before Lighting .................... 32
What to do if You Smell Gas .................................. 32
Millivolt/Thermostat Control Lighting Instructions .. 33
To urn Off Gas to Heater ........................................ 33
Blower Operation ................................................... 34
Cleaning and Servicing .............................................. 35
Annual Cleaning/Inspection ................................... 35
Periodic Cleaning ................................................... 35
Optional Accessories ................................................. 36
Installing Optional Firebrick Panels ........................ 36
Installing Optional Porcelain Panels ...................... 37
Installing Optional Black Magic Panels .................. 37
Troubleshooting ......................................................... 38
Replacement Parts ..................................................... 41
VFF Firebox Parts .................................................. 41
VFF32/VFF36 Millivolt Burner Parts ...................... 42
VFF32/VFF36 IPI Burner Parts .............................. 43
►
Berkley Oak Refractory Logs ................................. 44
Highland Oak Refractory Logs ............................... 45
Beachcomber & Riverwood Refractory Logs ......... 46
Kentucky Wildwood Refractory Logs ..................... 47
Stoney Creek Refractory Logs ............................... 48
Warranty ...................................................................... 49
2
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 3
VFF Vent Free Fireplace System
IMPORTANT SAFETY INFORMATION
INSTALLER
Please leave these instructions with the appliance.
OWNER
Please retain these instructions for future reference
.
WARNING:
• Any change to this heater or its controls can be dangerous.
• Improper installation or use of the heater can cause serious injury or death from re, burns,
explosion or carbon monoxide poisoning.
• Do not allow fans to blow directly into the replace. Avoid any drafts that alter burner ame
patterns.
• Do not use a blower insert, heat exchanger insert or other accessory, not approved for use with
this heater where applicable.
1. Due to high temperatures, the appliance should be
located out of trafc and away from furniture and
draperies.
2. Children and adults should be alerted to the hazard
of high surface temperature and should stay away
to avoid burns or clothing ignition.
3. Young children should be carefully supervised when
they are in the same room with the appliance.
4. Do not place clothing or other ammable material
on or near the appliance.
5. Any safety screen or guard removed for servicing
an appliance, must be replaced prior to operating
the heater.
6. Installation and repair should be done by a qualied
service person.
7. To prevent malfunction and/or sooting, an unvented
gas heater should be cleaned before use and at
least annually by a professional service person.
More frequent cleaning may be required due to
excessive lint from carpeting, bedding materials,
etc. It is imperative that control compartments,
burners and circulating air passageways be kept
clean.
8. CARBON MONOXIDE POISONING: Early signs of
carbon monoxide poisoning are similar to the u with
headaches, dizziness and/or nausea. If you have these
signs, obtain fresh air immediately. Have the heater
serviced as it may not be operating properly.
9. The installation must conform with local codes or, in
the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.l/NFPA54.
10. This unit complies with the latest edition of ANSI
Z21.11.2–2013, Unvented Heaters.
11. Do not install the heaters in a bathroom or bedroom.
12. Correct installation of the refractory cement or ceramic
ber logs, proper location of the heater, and annual
cleaning are necessary to avoid potential problems with
sooting. Sooting, resulting from improper installation or
operation, can settle on surfaces outside the replace.
See log placement instructions for proper installation.
13. Avoid any drafts that alter burner ame patterns. Do not
allow fans to blow directly into replace. Do not place
a blower inside burn area of rebox. Ceiling fans may
create drafts that alter burner ame patterns. Sooting
and improper burning will occur.
14. CAUTION: Candles, incense, oil lamps, etc. produce
combustion byproducts including soot. Vent-free
appliances will not lter or clean soot produced by
these types of products. In addition, the smoke and/
or aromatics (scents) may be reburned in the vent-free
appliance which can produce odors. It is recommended
to minimize the use of candles, incense, etc. while the
vent-free appliance is in operation.
15. This is an unvented gas-fired heater. It uses air
(oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must
be provided. Refer to page 8.
16. This heater shall not be installed in a room or space
unless the required volume of indoor combustion air is
provided by the method described in the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, the International
Fuel Gas Code or applicable local codes.
17. Keep room area clear and free from combustible materials, gasoline and other ammable vapors and liquids.
18. Unvented gas heaters are a supplemental zone heater.
They are not intended to be the primary heating appliance.
19. Unvented gas heaters emit moisture into the living
area. In most homes of average construction, this
does not pose a problem. In houses of extremely
tight construction, additional mechanical ventilation is
recommended.
20. During manufacturing, fabricating and shipping, various
components of this appliance are treated with certain
oils, lms or bonding agents. These chemicals are not
harmful but may produce annoying smoke and smells
as they are burned off during the initial operation of the
appliance; possibly causing headaches or eye or lung
irritation. This is a normal and temporary occurrence.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
3
Page 4
IMPORTANT SAFETY INFORMATION
VFF Vent Free Fireplace System
The initial break-in operation should last six hours with
the burner at the highest setting. Provide maximum
ventilation by opening windows or doors to allow
odors to dissipate. Any odors remaining after this initial
break-in period will be slight and will disappear with
continued use.
21. Input ratings are shown in BTU per hour and are for
elevations up to 2,000 feet. For elevations above 2,000
feet, input ratings should be reduced 4 percent for each
1,000 feet above sea level. Refer to the National Fuel
Gas Code.
22. The appliance must be isolated from the gas supply
piping system by closing its equipment shutoff valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psig
(3.5 kPa).
23. Do not use this room heater if any part has been under
water. Immediately call a qualied service technician
to inspect the room heater and to replace any part of
the control system and any gas control which has been
under water.
24. Never burn solid fuels in a replace where a unvented
room heater is installed.
25. Always have a replace screen in place when the
appliance is in operation and, unless other provisions
for combustion air are provided, the screen must have
an opening(s) for induction of combustion air.
THIS APPLIANCE MAY BE INSTALLED IN AN
AFTER-MARKET, PERMANENTLY LOCATED,
MANUFACTURED (MOBILE) HOME, WHERE
NOT PROHIBITED BY LOCAL CODES.
THIS APPLIANCE IS ONLY FOR USE WITH THE
TYPE OF GAS INDICATED ON THE RATING
PLATE. THIS APPLIANCE IS NOT CONVERTIBLE FOR USE WITH OTHER GASES.
WARNING: Never connect unit to
private (non-utility) gas wells. This gas
is commonly known as wellhead gas.
WARNING: This product and the
fuels used to operate this product (liquid
propane or natural gas), and the products
of combustion of such fuels, can expose
you to chemicals including benzene, which
is known to the State of California to cause
cancer and reproductive harm. For more
information go to: www.P65Warnings.
ca.gov.
CODES
Adhere to all local codes or, in their absence, the latest edition of THE NATIONAL FUEL GAS CODE ANSI Z223.1 or
NFPA54 which can be obtained from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
or
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
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Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 5
VFF Vent Free Fireplace System
PRODUCT FEATURES
GAS SPECIFICATIONS AND ORIFICE SIZES
Fireplace
Screen
On/Off Switch
Piezo Ignition
Control Knobs
Figure 1. VFF Shown with Control Access Door Open
OPERATION
This unvented gas heater requires no outside venting
and burns cleanly with excellent heating efciency. As a
zero-clearance appliance, it can be installed against (or
recessed into) any wall that is accessible to a gas line.
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.
MAX
MODEL FUEL CONTROL
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 N AT 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 N AT 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
BTU
MIN
BTU
ORIFICE
SIZE
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
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 ame height
(heat output).
THERMAL GENERATOR (MILLIVOLT ONLY)
The millivolt gas log pilot is tted with a millivolt generator
to provide power for remote activation.
PILOT
The gas log heater is 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.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
5
Page 6
PRODUCT FEATURES
VFF Vent Free Fireplace System
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 oor on which the appliance rests, if the oor is
above ground level.
Your replace is equipped with an intermittent pilot ignition
(IPI) control. An IPI control with a standing pilot option provides the dual benet of an economical and environmentally
responsible product and one which lights easily even in
the coldest climates. When in intermittent pilot mode (as
it comes from the factory), your pilot remains unlit until
needed, saving you fuel. Standing pilot mode, by comparison, is characterized by a continuously burning pilot.
The benet of a pilot which lights only when needed is fuel
savings. However, with no pilot burning in your replace,
units operating in colder climates may experience delayed
start up or lock out. Because colder air is heavier than
milder air and there is no pilot burning to maintain a warm
stable temperature in your rebox, establishing a draft to
aid ignition becomes difcult. This is perfectly normal but
can be somewhat frustrating.
To remedy this issue, your replace has been designed with
a cold climate pilot option, which, when active, maintains
a warmer temperature inside your rebox to make ignition
faster and more efcient. Operating your appliance in cold
climate (aka standing) pilot mode will prohibit the need for
multiple ignition attempts and will prevent the system from
delaying start up or locking out.
To activate the cold climate option, simply move the cold
climate toggle switch located on the right side of the black
control center to the “On” (left) position. (Figure 2) You can
operate your appliance in this mode regardless of whether
you are using a remote control, wall switch or thermostat.
Figure 2. Cold Climate Option
Cold Climate
Switch
Master Switch
6
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 7
VFF Vent Free Fireplace System
FIREPLACE AND FRAMING DIMENSIONS
S
R
S
Q
Figure 3. Fireplace and Framing Dimensions
1/2"
or 5/8"
Min. Rough
Opening
Height
D
L
M
O - Min. Rough Opening Width
N
I
B
A
G
E
F
Min. Rough
Opening
Depth
P
H
C
J
K
Ref. VFF32 VFF36
A 37" (940 mm) 41" (1041 mm)
B 32" (813 mm) 36" (914 mm)
C 34
1
⁄2" (876 mm) 341⁄2" (876 mm)
D 29" (737 mm) 32" (813 mm)
E 21
3
⁄4" (553 mm) 213⁄4" (553 mm)
F 6" (152 mm) 6" (152 mm)
7
G 5
H 18
I 2
⁄16" (138 mm) 57⁄16" (138 mm)
5
⁄8" (473 mm) 205⁄8" (524 mm)
1
⁄2" (64 mm) 21⁄2" (64 mm)
J 16" (406 mm) 18" (457 mm)
K 13
L 23
M 29
1
⁄4" (337 mm) 153⁄4" (400 mm)
3
⁄8" (594 mm) 273⁄8" (695 mm)
7
⁄8" (759 mm) 337⁄8" (860 mm)
Framing Dimensions
N 35" (889 mm) 35" (889 mm)
O 37
P 15
Q 61
R 33
S 43
1
⁄4" (946 mm) 411⁄4" (1048 mm)
1
⁄2" (394 mm) 171⁄2" (445 mm)
3
⁄4" (1568 mm) 687⁄8" (1749 mm)
1
⁄2" (784 mm) 371⁄8" (943 mm)
3
⁄4" (1111 mm) 483⁄4" (1238 mm)
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
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Page 8
PRE-INSTALLATION INFORMATION
VFF Vent Free Fireplace System
WARNING:
• Gloves are recommended when handling
refractory cement or ceramic ber logs to
prevent skin irritation from loose fibers.
Logs are fragile — handle with care.
GETTING STARTED
Make sure you have received all parts. Check your packing
list to verify that all listed parts have been received. You
should have the following:
• Unvented gas heater
• Installation/operating instruction
• Canopy and three (3) screws
• Glass media (Contemporary model only)
• Refractory cement or ceramic ber logs sold separately
Carefully inspect the contents for shipping damage. If
any parts are missing or damaged, immediately inform
the dealer from whom you purchased the appliance.
Do not attempt to install any part of the appliance
unless you have all parts in good condition.
WARNING—Do not install the heater:
• Where curtains, furniture, clothing, or
other ammable objects are less than
42" from the front of the heater.
• In high trafc areas.
• In windy or drafty areas.
2. Install canopy and logs per instructions found in this
manual. The canopy MUST be installed for safe operation of the unit.
3. Field wire main power supply to units with fan kit. Refer
to the Electrical Section found in this manual. (Electrical
connections should only be performed by an experienced, licensed certied tradesman).
4. Install optional ON/OFF kit on units with millivolt control.
Refer to the installation instructions included with the
kit and also refer to the Electrical Wiring section found
in this manual.
5. Plumb gas line. Refer to the Connecting the Gas
section found in this
manual. (Gas connections should only be performed
by an experienced,
licensed/certied tradesman).
6. Complete nish wall material and/or surround.
WHAT YOU WILL NEED FOR INSTALLATION:
You must have the following items available before proceeding with installation:
• External regulator (for propane/LPG only)
• Manual shutoff valve
• Piping which complies with local codes
• Sediment trap
• Phillips head screwdriver
• Tee joint
• Pipe sealant approved for use with propane/LPG
• Pipe wrench (resistant to sulfur compounds)
When planning the installation for the replace it is necessary to determine where the unit is to be installed and
whether optional accessories are desired. Gas supply
piping should also be planned. The following steps represent the normal sequence of installation. Each installation
is unique, however, and might require a different sequence.
1. Position fireplace in desired location. Refer to the
Location of Fireplace and Clearances and Height
Requirements, and Firebox Framing sections found in
this manual.
NOTE: Be sure all packing material has been removed
from underside the unit.
ADEQUATE COMBUSTION AND VENTILATION AIR
This heater shall not be installed in a conned space or
unusually tight construction unless provisions are provided
for adequate combustion and ventilation air.
The National Fuel Gas Code, (ANSI Z223.1/NFPA54),
denes a conned space as a space whose volume is less
than 50 cubic feet per 1,000 BTU per hour (4.8m3 per kw)
of the aggregate input rating of all appliances installed in
that space, and an unconned space as a space whose
volume is not less than 50 cubic feet per 1,000 BTU per
hour (4.8 m3 per kw) of the aggregate input rating of all
appliances installed in that space. Rooms communicating
directly with the space in which the appliances are installed,
through openings not furnished with doors, are considered
a part of a conned space.
WARNING: If the area in which the heater
is operated does not meet the required
volume for indoor combustion air, combustion
and ventilation air shall be provided by one of
the methods described in the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, the International
Fuel Gas Code or applicable local codes.
8
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 9
VFF Vent Free Fireplace System
FIREPLACE INSTALLATION
Unusually tight construction is dened as construction
where:
a. walls and ceilings exposed to the outside atmosphere
have a continuous water vapor retarder with a rating of
1 perm (6 x 10
gasketed or sealed, and
b. weather stripping has been added on openable windows
and doors, and
c. caulking or sealants are applied to areas such as joints
around window and door frames, between sole plates
and oors, between wall-ceiling joints, between wall
panels, at penetrations for plumbing, electrical and gas
lines and other openings.
The following formula can be used to determine the maximum heater rating per the denition of unconned space:
BTU/Hr = (L1 + L2) Ft x (W) Ft x (H) Ft
Consider two connecting rooms with an open area
between, with the following dimensions:
L1 = 151/2 Ft., L2 = 12 Ft., W = 12 Ft., H = 8 Ft.
If there were a door between the two rooms the calculation
would be based only on the room with the heater.
11
kg per pa/sec-m2) or less with openings
50
BTU/Hr = (151/2 + 12) x (12) x (8)
50
BTU/Hr = (151/2) x (12) x (8)
50
FIREPLACE LOCATION
Carefully select the best location for installation of your
unvented replace. The following factors should be taken
into consideration.
• Clearance to side wall, ceiling, woodwork and
window or other combustibles. Refer to “Clearances”
section. Minimum clearances to combustibles must
be maintained.
• Location must not be affected by drafts caused by
kitchen exhaust fans, ceiling fans, return air registers
for forced air furnaces / air conditioners, windows or
doors.
• Installation must provide adequate ventilation and
combustion air.
• DO NOT INSTALL THESE MODELS IN A BED-
ROOM OR BATHROOM.
• Location should be out of high trafc areas and
away from furniture and draperies due to heat
from rebox.
• Never obstruct the front opening of the unvented
replace or restrict the ow of combustion and ventilation air.
• Minimize modications to existing construction. Refer
to Figure 5 below for location suggestions.
• Do not install in the vicinity where gasoline or other
ammable liquids may be stored. The unvented rebox must be kept clear and free from the combustible
materials.
Figure 4. Combustion Air Calculation
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Counter
Fireplace
H
W
Figure 5. Possible Fireplace Loca-
tions
9
Page 10
FIREPLACE INSTALLATION
CLEARANCES
Ensure that minimum clearances shown in Figures 6, 7 and
8 are maintained. Left and right clearances are determined
when facing the front of the rebox.
Follow these instructions carefully to ensure safe installation. Failure to follow these requirements may create a
re hazard.
Sidewall Clearances — The clearance from the inside of
the appliance to any combustible adjacent wall should not
be less than 9" for the VFF32 and VFF36. Figure 6
Ceiling Clearance — The ceiling must be at least 42" from
the top of the rebox opening. Figure 6
Back Wall Clearance — The appliance may be placed
against a combustible back wall.
Floor Clearance — The replace may be installed directly
on a combustible oor or a raised platform of an appropriate height. Do not place replace on carpeting, vinyl, tile or
other soft oor coverings. It may, however, be placed on at
wood, plywood, particle board or other hard surfaces. Be
sure replace rests on a solid continuous oor or platform
with appropriate framing for support and so that no cold
air can enter from under the rebox.
Mantel clearances — The canopy supplied with the unit
must be installed. If a combustible mantel is installed. It
must meet the clearance requirements detailed in Figure 7
NOTE: The Monessen Barrington cabinet model series
BWC400 and BWC500 are specially designed to comply
with all mantel temperature requirements. Any custom-built
mantel must comply with all clearance requirements shown
in this instruction manual.
Combustible
material can
contact top of
replace
Figure 7. Mantel Clearances
VFF Vent Free Fireplace System
12”
10”
23”
21”
19”
Combustible
Material Area
4¹⁄₂”
6”
7¹⁄₂”
1”
2¹⁄₂”
3”
8”
6”
2¹⁄₂”
16”
12”
Non-combustible material
Finish Wall
1¹⁄₂”
3¹⁄₂”
5”
6”
45°
42" Minimum
9"
Minimum
Figure 6. Sidewall and Ceiling Clearances
10
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
9"
Minimum
7¹⁄₂”
9”
Figure 8. Mantel Leg Clearances
WARNING: The dimensions shown
in Figures 6, 7, and 8 are minimum
clearances to maintain in installing this heater.
Left and right clearances are determined when
facing the front of the heater.
Follow these instructions carefully to ensure
safe installation. Failure to follow instructions
exactly can create a re hazard.
Page 11
VFF Vent Free Fireplace System
FIREPLACE INSTALLATION
FRAMING AND ANCHORING
If unit is to be “built in”, replace framing can be built before
or after the appliance is set in place. BE SURE THAT ALL
PACKING MATERIAL HAS BEEN REMOVED FROM THE
UNDERSIDE OF THE UNIT PRIOR TO SETTING THE
FIREBOX IN PLACE. Construct replace framing following
Fireplace and Framing Dimensions. The framing headers
may rest directly on top of the rebox.
The replace may be installed directly on a combustible
oor or a raised platform of an appropriate height. Do
not place replace on carpeting, vinyl, tile or other soft
oor coverings. It may, however, be placed on at wood,
plywood, particle board or other hard surfaces. Be sure
replace rests on a solid continuous oor or platform with
appropriate framing for support and so that no cold air can
enter from under the rebox.
WARNING: The replace must be installed
giving full consideration to the clearance
and height requirements identified in this
manual.
SECURING HEATER TO FLOOR OR
HEARTH
NOTE: Clearance requirements as detailed in the
Clearances section on of this manual, must be met before
securing the heater in place.
To prevent movement, the heater must be secured to the
oor or hearth.
1. Open the control access door and remove the screen.
2.
Secure the rebox with two anchoring screws (3⁄16
length) supplied with the replace system. Figure 10
NOTE: If the unit is mounted on carpeting, tile or
combustible material without the hearth, a metal or wooden
base covering the entire width and depth of the base must
be installed.
" x 11⁄4
"
Anchor replace to the side framing members using nailing
anges.
1. Bend out the nailing anges located on each side of the
rebox.
2. Slide the rebox into prepared framing or position rebox
in its nal position and frame later.
3. Level the rebox by checking the top edge of the rebox.
Shim if necessary.
4. Anchor rebox to the side framing members using 8d
nails or other suitable fasteners. Figure 9
5. The canopy must be installed for safe operation of the
heater. Refer to canopy installation details.
Nail Sides
Through Nailing
Flanges
Anchor Screws
3
⁄16" x 11⁄4"
Figure 10. Secure Fireplace to Floor or
Hearth
Figure 9. Nailing Flanges
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11
Page 12
GAS LINE & PRESSURE
VFF Vent Free Fireplace System
CONNECTING THE GAS LINE
NOTICE: A qualied gas appliance installer must connect
the heater to the gas supply. Consult all local codes.
WARNING: Use new black iron or
steel pipe. Internally tinned copper or
copper tubing can be used per National
Fuel Code, section 2.6.3, providing gas meets
hydrogen sulde limits, and where permitted by
local codes. Gas piping system must be sized to
provide minimum inlet pressure (Listed on Data
Plate) at the maximum ow rate (BTU/hr). Undue
pressure loss will occur if the pipe is too small.
A manual shutoff valve must be installed
upstream of the appliance. Union tee and
plugged 1/8" NPT pressure tapping point should
be installed upstream of the appliance. Figure 11
To Fireplace
Pipe Coupling
Pipe
Stainless
Flexible Tube
Manual Shutoff
Valve
Figure 11. Gas
Connection
IMPORTANT: Loosen the pipe adapter on the ex tube
before installing to the system piping.
Always use an external regulator for all propane/LPG heaters only, to reduce the supply tank pressure to a maximum
of 13" w.c. This is in addition to the internal regulator in the
heater valve.
To reach factory installed ex line, go through access door
on right or left side of rebox.
WARNING: CHECK GAS TYPE: The
gas supply must be the same as stated
on the heater’s rating plate. If the gas
supply is different, DO NOT INSTALL THE
HEATER. Contact your dealer for the correct
model. Connecting to the wrong gas type may
result in property damage or personal injury.
Locations Pressure
Tapping Point Installation
Gas Supply
Inlet
WARNING: Connecting directly to an
unregulated propane/LPG tank can
cause an explosion
Access Door
for Gas Line
Manual Gas Shutoff
Stainless Flex Line
Figure 12. Access Holes
(Recommended Outlet
Positioned Vertical)
The stainless ex line is on the right side facing the replace and can connect to either a 3/8 NPT female or 1/2
NPT male pipe. To connect from the opposite side, route
the pipe under the rear portion of the unit.
Test all gas joints from the gas meter to the heater valve for
leaks using a gas analyzer or soap and water solution after
completing connection. DO NOT USE AN OPEN FLAME.
Check the gas pressure with the appliance burning and
the control set to HIGH.
Open control access door on either side of unit to nd valve
and regulator referred to below. Figure 12
CHECKING GAS PRESSURE – MILLIVOLT
CONTROL
Figure 13
The valve regulator controls the burner pressure which
should be checked at the pressure test point.
Turn captured screw counter clockwise two or three turns
and then place tubing
to pressure gauge over
test point (Use test point
“OUT” closest to control knob). After taking
pressure reading, be
sure and turn captured
screw clockwise firmly
to re-seal. Do not over
torque. Check for gas
leaks.
Figure 13. Pressure Test Point Location Millivolt Control
Test Port
"OUT"
12
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Page 13
VFF Vent Free Fireplace System
FINAL INSTALLATION
CHECK GAS PRESSURE – IPI CONTROL
1. Check gas type. The gas supply must be the same as
stated on the appliance’s rating decal. If the gas supply
is different from the replace, STOP! Do not install the
appliance. Contact your dealer immediately.
2. To facilitate easier installation, a 18" (610 mm) ex line
with manual shut-off valve has been provided with this
appliance. Install and attach 1/2" gas line onto shut-off
valve.
3. After completing gas line connection, purge air from
gas line and test all gas joints from the gas meter to the
replace for leaks. Use a solution of 50/50 water and
soap solution or a gas sniffer.
4. To check gas pressures at valve, turn captured screw
counter clockwise 2 or 3 turns and then place tubing to
pressure gauge over test point. Turn unit to high. Figure 14 After taking pressure reading, be sure and turn
captured screw clockwise rmly to reseal. Do not over
torque. Check test points for gas leaks.
WARNING: Do NOT use open ame
to check for gas leaks.
REMOVE SCREEN
NOTE: Fireplace screen must be removed to access log
box and to install canopy.
Figure 15
1. Remove bottom access panel.
2. Removing replace screen frame panel by pushing
screen frame panel up and out.
Canopy
Fireplace
Screen
Figure 14. IPI Valve
Pressure Inlet
Pressure
Outlet
FP3034
Pilot Adjustment Screw
Figure 15. Remove Fireplace Screen Panel
INSTALL CANOPY
Figure 16
1. Align the black canopy with the holes in the top frame
assembly.
2. Install the three (3) screws (in owner’s manual packaging) which attach the canopy to the top frame assembly.
3. Tighten all screws. Make sure the canopy is level and
secure.
Canopy
WARNING: Do not operate the unit with-
out the screen frame panel and canopy
installed.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Screws
Figure 16. Install
Canopy
13
Page 14
ELECTRICAL WIRING — MILLIVOLT
VFF Vent Free Fireplace System
ODS Pilot
On/Off
Switch
Field Installed Optional
Wall Switch or
Remote Receiver
Figure 17. Wiring Diagram (Millivolt)
On/Off
Switch
TH = 3
TP = 1
TP/TH = 2
Switch
ODS
Pilot
Valve
Spade
Terminal
FP2112a
WARNING: Label all wires prior to
disconnection when servicing controls.
Wiring errors can cause improper and
dangerous operation. Verify proper operation
after servicing.
The millivolt valve is a self-powered combination gas control THAT DOES NOT REQUIRE 110V AC TO OPERATE.
Refer to Figure 17 and installation instructions provided
with optional wall switch, thermostat or remote control for
wiring instructions. A maximum length of 15 feet of 18awg
two conductor wire is to be used for wall switch or thermostat installations.
NOTE: Thermostats and switches must be suitable for
millivolt operation.
14
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
WARNING: Do NOT connect wall
switch to 110 V circuit.
CONNECT OPTIONAL WALL SWITCH OR
THERMOSTAT
1. Use 18 awg, two-wire cable, 15 feet maximum length.
2. At one end of the cable, connect both wires to the wall
switch or thermostat. At the other end, connect one
wire to TP/TH and one wire to TH, or connect the wall
switch/thermostat to the two male (0.25") terminals on
the left side of the unit. The color of the wires does not
matter.
Page 15
VFF Vent Free Fireplace System
CONNECT REMOTE RECEIVER
THESE INSTRUCTIONS SUPERCEDE THE SECTION
ENTITLED “HEARTH MOUNT” IN THE MILLIVOLT
HAND-HELD REMOTE INSTRUCTIONS SUPPLIED
WITH THE REMOTE.
Figure 18
1. Remove bottom control door.
2. Connect the remote connector wires located in the unit
to the remote receiver.
3. Stick Velcro® pads with self-adhesive backing to bottom
of remote receiver and to oor of compartment behind
access panel.
®
4. Attach remote receiver to rebox with Velcro
pads.
Control switch must face forward.
NOTE: Do not place remote receiver in combustion
chamber.
CHECK SYSTEM OPERATION
The millivolt system and individual components may be
checked with a millivolt meter having a 0-1000 mV range.
Conduct each check shown in chart below by connection
meter test leads to terminals as indicated.
ELECTRICAL WIRING — MILLIVOLT
Remote Receiver
Figure 18. Install Remote Receiver
A. COMPLETE MILLIVOLT SYSTEM CHECK
(“A” Reading: Thermostat contacts CLOSED,
control knob “ON,” main burner should turn ON)
a. If the reading is more than 100 millivolts and the
automatic valve still does not come on, replace the
control.
b. If the closed circuit reading (“A” reading) is less than
100 millivolts, determine cause for low reading, proceed to Section B below.
Connect Meter
Check
Test
A
B
To
Test
Complete
System
Thermopile
Output
Leads to
Terminals
B. Thermopile Output Reading Check
(“B” Reading: Thermostat contacts OPEN, main
burner OFF)
1. Check gas pressure to the unit. If gas pressure is
within minimum and maximum on data plate, then
check pilot voltage, 325 millivolts minimum. If the
minimum millivolt reading is not obtainable, replace
pilot.
Switch or
Thermostat
Contacts
Meter Reading
Should Be
2 & 3 Closed Closed
1 & 2 Open Open
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15
Page 16
OPERATING INSTRUCTIONS—MILLIVOLT
VFF Vent Free Fireplace System
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instruction exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
A. This appliance is equipped with a pilot which must be lit with built-in piezo ignitor while following these
instructions exactly.
B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the oor
because some gas is heavier than air and will settle on the oor.
WHAT TO DO IF YOU SMELL GAS:
• Turn off all gas to the appliance.
• Open windows.
• Do not attempt to light any appliance.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the re department.
C. Use only your hand to push in, or turn the gas control knob. Never use tools. If the knob will not push
in or turn by hand, don't try to repair it. Call a qualied service technician. Force or attempted repair
may result in a re or explosion.
D. Do not use this appliance if any part of it has been under water. Immediately call a qualied service
technician to inspect the appliance and to replace any part of the control system and any gas control
that has been under water.
LIGHTING PILOT FOR THE FIRST TIME
INITIAL LIGHTING
Purge air from the supply line as follows:
• Open main shutoff valve.
• Unscrew main pressure test point.
• Leave inlet test screw open until gas comes in.
• When gas is owing, tighten inlet screw immediately.
LEAK TESTING
1. Follow the pipe from the gas supply line connection to the gas valve. Check connection for leaks
with soap and water mixture.
2. Next check for gas leaks at the burner with soap and water mixture.
3. Check the pilot for gas leaks with soap and water mixture.
WARNING: NEVER use open ame
to check for gas leaks.
16
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Page 17
VFF Vent Free Fireplace System
PILOT
OPERATING INSTRUCTIONS—MILLIVOLT
LIGHTING PILOT FOR THE FIRST TIME
APPROVED LEAK TESTING METHOD
You may check for gas leaks with the following methods only:
• Soap and water solution
• An approved leak testing spray
• Electronic sniffer
NOTE: Remove any excessive pipe compound from the connections. Excessive pipe compound
can set off electronic sniffers.
WARNING: NEVER use open ame
to check for gas leaks.
WARNING: If using a soap and water
solution to test for leaks, DO NOT
spray solution onto control body.
Check for gas leaks in each of the following locations:
• Pipe from the gas supply line connection to the gas valve
• Burner connections • Field made joints / gas shutoff valve
• Pilot • Factory made joints
• Each joint or connection • All joints on valve and control body
LIGHTING PILOT
WARNING: The control has an interlock device that does not allow the lighting of the
replace up to the moment the safety device of the ame has not interrupted the gas
ow. After that period of time (when the magnet is closed), it is possible to start the
lighting operation.
The gas control knob is designed to be operated by hand. DO NOT use any tools during this
operation. Damaged knobs may result in serious injury.
1. Depress and turn knob counterclockwise
to pilot position.
2. Depress fully and hold pilot gas knob. Depress piezo igniter as many times as needed to ignite pilot.
Keep knob fully depressed for a few seconds. Release and check that pilot continues to burn.
If the pilot does not stay lit, repeat steps 1 and 2.
O
N
T
O
L
I
P
F
F
O
Pilot Position
Continued on next page
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17
Page 18
PILOT
PILOT
OPERATING INSTRUCTIONS – MILLIVOLT
LIGHTING BURNER
LIGHTING THE BURNER
Depress and turn the knob counterclockwise to the “ON” position.
It will take less than four (4) seconds for the burner to ignite.
MAIN BURNER SWITCH
This switch allows you to turn on and to turn off the main burner
without using the gas valve knob. is in the “ON” position to light the
main burner.
O
N
T
O
L
I
P
F
F
O
VFF Vent Free Fireplace System
Wall Switch
N
O
O
F
F
P
I
L
T
O
Pilot Position
Depress and turn knob clockwise
Off Position
On Position
TO TURN OFF GAS
to “OFF” position.
I
L
P
O
T
F
F
O
O
N
PILOT
18
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Page 19
VFF Vent Free Fireplace System
ELECTRICAL INSTALLATION — IPI
Label all wires before disconnecting when
servicing controls. Wiring errors can cause
improper and dangerous operation.
CAUTION
WARNING: Electrical connections should
only be performed by a qualied, licensed
electrician. Main power must be off
when connecting to main electrical power
supply or performing service. All wiring shall
be in compliance with all local, city and state
codes. The appliance, when installed, must be
electrically grounded in accordance with local
codes or in the absence of local codes, with
the National Electrical Code ANSI/NFPA 70
(latest edition) and Canadian Electrical Code,
CSA C22.1.
ELECTRICAL WIRING
General
This replace is equipped with an IPI control valve which
operates on 6 volts. The 6 volt DC adapter plugs into the
replace junction box A/C power supply.
It is equipped with a battery back-up which will operate
the unit for approximately 48 hours in the event of a power
failure using on/off function only. Use of high/low function
will reduce battery life while in back-up mode.
Optional Accessories
This replace may be used with a wall switch, wall mounted
thermostat or IPI hand held remote control.
WARNING: Do NOT connect to a
110V circuit.
JUNCTION BOX WIRING
1. This should be done before framing the replace. Wire
the receptacle into an electrical circuit. Wire with minimum 60° C wire in accordance with prevailing codes.
2. Remove the external junction box cover by removing
the screw from the side of the outside rebox wall.
Junction box was installed at the factory.
3. The junction box cover has a factory installed “romex”
style strain relief connector. After connecting the wires,
route the wire leads through this connector. Refer to
the wiring diagram in Figure 20
120V AC
60Hz
Factory Supplied
Not Supplied
Junction Box
Figure 20. Junction Box Wiring Diagram
OPTIONAL FORCED AIR KIT (BLOTMC)
If you are installing the forced air blower kit, refer to the
installation instructions provided with the kit. The rebox
must be connected to main power supply at time of rebox installation. The electrical connections must be made
before the rebox is framed and enclosed in the nished
walls.
Receptacle
Junction
Box
BLACK
GREEN
BLACKWHITE
Speed Control
Figure 19. BLOTMC Blower Wiring Diagram
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
BLACKBLACKWHITE
120VAC
19
Page 20
ELECTRICAL INSTALLATION – IPI
VFF Vent Free Fireplace System
WALL SWITCH INSTALLATION
The wall switch wire connection is located off the wire
harness coming out of the IPI Control Board. The wire is
labeled 'wall switch'. Connect the low voltage switch wires
to the two (2) terminals labeled "wall switch" from the control
IPI SYSTEM WIRING DIAGRAM
ORANGE
YELLOW
BLACK
board. Run wire to desired location on wall. Up to 50 feet
of 18 gauge wire may be used if necessary. Attach wires
to wall switch. Mount the wall switch in a junction box and
screw on cover. Figure 21
BLACK
RED
RED
RED
BLACK
RED
BROWN
RED
GROUND
RED
BLACK
GREEN
D/C POWER
BLACK
Figure 21. IPI System Wiring Diagram
Electrical connections should only be performed by a qualied, licensed electrician. Main
power supply must be turned off before connecting fans to the main electrical power supply
or performing service.
CAUTION
20
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Page 21
VFF Vent Free Fireplace System
0
System Set Up Chart
NOTE: When using ON/OFF wall switch, the master switch, located in bottom of fireplace must be in the
ON position to perform all configuration setup operations.
FUNCTION OPERATION
Cold Climate Pilot On/Off Flip the toggle switch to ON. OFF
Operations
FUNCTION OPERATION
Power Up Flip the Master Switch to ON position to power up the system.
Fireplace On
Fireplace Off
OPERATING INSTRUCTIONS – IPI
®
2.
OPERATIONS AND INDICATIONS
Cold
Climate
CONTROL
BOARD
Turn on wall switch to turn the fireplace on. NOTE: If master switch was
just switched to ON, then at first use of wall switch, it may need to be
turned ON - OFF - ON to synchronize the two switch settings.
Turn the wall switch to the OFF position, or turn the ON/OFF master
switch to the OFF position
Switch
Master
Switch
DEFAULT
SETTING
Self Diagnostics Chart
The fireplace has a self diagnostic LED on the control board enabling you to troubleshoot problems and
potentially avoid a service call. Please refer to the chart below for indicator reference.
FUNCTION OPERATION
Sparking error Red LED, Flash 2 times
Flame error Red LED, Flash 3 times
Ignition fail Red LED, Flash 4 times
Re-ignite warning Red LED, Flash 5 times
Pilot valve voltage error Red LED, Flash 6 times
Main valve voltage error Red LED, Flash 7 times
Low battery Red LED 2.5 sec, Flash once
Remote Operations
The following functions are available on the RMSC hand held remote.
NOTE: Flame height control is only available with purchase and installation of a stepper motor kit with RF
receiver
REMOTE FUNCTION OPERATION ICON
Fireplace On Press the ON button on the transmitter.
Fireplace Off
Flame Height Up
Flame Height Down
Count Down Timer Mode
Press the OFF button 3 times or hold the OFF button 3
seconds for memory off.
Press the ON button once to turn on the fireplace with
maximum flame setting.
Press the OFF button to lower the flame height to
medium and low.
Press TIMER button to enter the timer mode. Keep
pressing the TIMER button to set the desired time or
press TIMER button to “0” to exit timer mode.
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21
Page 22
OPERATING INSTRUCTIONS – IPI
VFF Vent Free Fireplace System
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a re or explosion may
result causing property damage, personal injury or loss of lie.
A. This appliance is equipped with an ignition device which automatically lights the pilot. Refer to the
instructions.
B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the oor
because some gas is heavier than air and will settle on the oor.
WHAT TO DO IF YOU SMELL GAS:
• Do not attempt to light any appliance.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the re department.
C. Turn Master Switch to ON position by hand. Never use tools. If the switch will not function by hand,
do not try to repair it. Call a qualied service technician. Force or attempted repair may result in a re
or explosion.
D. Do not use this appliance if any part of it has been under water. Immediately call a qualied service
technician to inspect the appliance and to replace any part of the control system and any gas control
that has been under water.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above.
2. This appliance is equipped with an ignition device which automatically lights the burner. Do not try to
light the burner by hand.
3. Wait ve (5) minutes to clear out any gas. Then smell for gas, including near
the oor. If you smell gas, STOP! Follow "B" in the safety information on page
38. If you do not smell gas, go to next step.
4. Press the wall switch to the "ON" (-) position. Sparker will spark and pilot
ame will light.
5. Once pilot ame is established, the main burner ame will light automatically.
6. If the pilot will not stay lit after several tries, turn the master switch to "OFF"
and call your service technician or gas supplier.
Wall Switch
Master Switch
TO TURN OFF GAS TO APPLIANCE
1. Turn Wall Switch to "OFF".
2. Turn Master Switch to "OFF".
3. Turn off all electrical power to the appliance if service is to be performed.
22
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Page 23
VFF Vent Free Fireplace System
LOG AND MEDIA PLACEMENT
WARNING: The positioning of the logs is critical to the safe and clean operation of this heater.
Sooting and other problems may result if the logs are not properly and rmly positioned in
the appliance. Never add additional logs or embellishments such as pine cones, vermiculite
or rock wool to the heater. Only use the logs and 3G-RW rock wool supplied with the unit.
Failure to position the parts in accordance with diagrams below or to use only parts specically
approved for this heater may result in property damage or personal injury.
CAST IRON GRATE INSTALLATION
Install the cast iron grate by inserting screw head on back
of right side of grate into the “I” shaped slot on front right
corner of unit. After moving screw head to the bottom of the
“I” slot, insert the screw head on the back of the left side of
grate into the keyhole slot on the left front of unit. Figure 22
A.
Key
Hole Slot
Cast Iron Grate
I Slot
ROCK WOOL PLACEMENT
Before installing logs, place rock wool in dime size pieces
evenly over small burner ports starting in the rear of the
burner going towards the front. Avoid placing rock wool on
slots on each side of rear burner and on large yellow ame
ports on front of burner. After covering small burner ports,
discard any excess rock wool. Figure 23
Dime-sized pieces
of rock wool
Figure 23. Place Rock Wool
B.
Cast Iron Grate
Figure 22. Install Cast Iron Grate
WARNING: Use only rock wool
provided with the replace. Do not
add additional rock wool. Place rock wool on
burner ports only. Keep air gap between rear
log and burner clean.
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23
Page 24
LOG AND MEDIA PLACEMENT
VFF Vent Free Fireplace System
INSTALL 24" (F, R) BERKLEY OAK LOGS ON
NATURAL BLAZE BURNER
1. Place the #1 log (the “chunk”) on the grate bar right side
of the burner adjacent to the controls. Figure 24
Ember Chunk
Log #1
Figure 24. Place Ember Chunk Log #1
2. Place front right log (#2) on right pin located on burner
and right grate bar. Figure 25 Slide log #1 forward so
that it is tight against log #2.
Right Front
Log #2
4. Place left rear log (#4) on pin located on rear support
bracket on left side. Figure 27
Left Rear Log #4
Figure 27. Place Left Rear Log #4
5. Place left front log (#5) on left pin located on burner and
left grate bar. Rest top right portion of log on right front
log. Figure 28
Left Front Log #5
Figure 25. Place Right Front Log #2
3. Place right rear log (#3) on pin located on rear support
bracket and rest left side of log on front right log. Figure
26
Figure 26. Place Right Rear Log #3
24
Right Rear
Log #3
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Figure 28. Place Left Front Log #5
6. Place top left log (#6) on unit by placing grooved portion
of log onto left grate bar with bark facing outward. Rest
front part of log in groove on left front log. Figure 29
Middle Left
Log #6
Figure 29. Place Middle Left
Log #6
Page 25
VFF Vent Free Fireplace System
LOG AND MEDIA PLACEMENT
7. Place left top log (#7) on left rear log (#4) and left front
log (#5) using locating grooves on bottom of #7 and
locating blocks on logs #4 and #5. Figure 30
8. Place right top log (#8) onto right rear (#3) and right
front (#2) logs using locator on bottom of right top log.
Figure 30
Left Top
Log #7
Figure 30. Place Right Top Log #8
Right Top
Log #8
INSTALL 24", (F,R) HIGHLAND OAK LOGS ON
NATURAL BLAZE BURNER
1. Place the #1 log (the “chunk”) on the grate bar right side
of the burner adjacent to the controls. Figure 31
Ember Chunk
Log #1
Figure 31.
2. Place front right log (#2) on right pin located on burner
and right grate bar. Figure 32 After placing front right
log, ensure log is fully upright and tilting towards the
back of the burner.
Right Front
Log #2
PLACE THE DECORATIVE ROCK
Optional volcanic rock may be placed around the unit on
the oor of the rebox. Be sure to avoid any areas on the
burner itself.
DO NOT sprinkle volcanic rock on the logs,
around the pilot, or on or near burners. This
may cause sooting. Place volcanic rock only
on the oor of the replace.
During initial operation of the new heater, new
burning logs and/or rock wool will give off a
paper burning smell and orange ames will be
CAUTION
present. Simply open the windows for a few
hours to vent the odor.
Figure 32.
3. Place right rear log (#3) on pin located on rear support
bracket and rest left side of log on front right log. Figure
33 After placing right rear log, ensure log is fully upright
and does not tilt forward. Slide #1 log ember chunk back
to contact right rear log.
Right Rear
Log #3
Figure 33.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
25
Page 26
LOG AND MEDIA PLACEMENT
VFF Vent Free Fireplace System
4. Place left rear log (#4) on pin located on rear support
bracket on left side and left grate bar. Figure 34
Left Rear
Log #4
Figure 34.
5. Place left front log (#5) on left pin located on burner and
left grate bar. Rest top right portion of log on right front
log. Figure 35
Left Front
Log #5
8. Place small right front top log (#8) on log #7 and log
#2 using locating grooves on the bottom of log #8 and
locating blocks on log #7 and log #2. Figure 37
Right Front Top
Log #8
Figure 37.
PLACE THE DECORATIVE ROCK
Optional volcanic rock may be placed around the unit on
the oor of the rebox. Be sure to avoid any areas on the
burner itself.
Figure 35.
6. Place top left log (#6) on left rear log (#4) and left front
log (#5) using locating grooves on bottom of #6 and
locating blocks on logs #4 and #5. Figure 36
7. Place right top log (#7) on right rear log (#3) and right
front log (#2) using locators on the bottom of log #7 and
locators on logs #2 and #3. Figure 36
Left Top Log #6
Right Top
Log #7
DO NOT sprinkle volcanic rock on the logs,
around the pilot, or on or near burners. This
may cause sooting. Place volcanic rock only
on the oor of the replace.
During initial operation of the new heater,
new burning logs and/or rock wool will give
CAUTION
off a paper burning smell and orange ames
will be present. Simply open the windows for
a few hours to vent the odor.
KENTUCKY WILDWOOD KW24-R LOGS
PLACEMENT
1. Place bottom front right log #1 on right pin located on
burner and right grate bar.
Log #1
Figure 36.
26
Figure 38.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 27
VFF Vent Free Fireplace System
LOG AND MEDIA PLACEMENT
2. Place bottom rear right log #2 on pin on rear of grate
assembly and push towards rear as far as possible.
Log #2
Figure 39.
3. Place bottom rear left log #3 on pin on left rear of grate
assembly and push towards rear as far as possible.
Log #3
5. Place center left log #5 on top of log #4 on left side
with small end of log #5 under log #3 and on left grate
bar.
Log #5
Figure 42.
6. Place center top log #6 on two (2) pins on top of log
#2. The front end of log #6 should rest on log #4.
Log #6
Figure 40.
4. Place bottom front left log #4 on left pin located on
burner and left grate bar.
Log #4
Figure 41.
Figure 43.
7. Place top right log #7 on the two (2) pins located on
log #2 and log #1.
Log #7
Figure 44.
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27
Page 28
BEACHCOMBER AND RIVERWOOD LOGS
INSTALL 18" BEACHCOMBER AND RIVERWOOD
LOGS ON NATURAL BLAZE BURNER
1. Place the rear log (#1) on the rear pins located on the
log support bar. (See Figure 45.)
1
VFF Vent Free Fireplace System
4. Place the right log (#4) on the bar located on the right
side of the burner. (See Figure 48.)
1
Figure 45.
2. Place the front left log (#2) on the pin located on the
left side of the burner. (See Figure 46.)
1
2
2
4
3
Hot while in operation. Do not touch. Keep children, clothing, furniture,
CAUTION:
gasoline and other liquids having ammable vapors away.
Figure 48
5. Place the top left log (#5) on the left side of the burner
allowing the log to rest on top of the front left log (#2).
(See Figure 49.)
1
5
2
4
3
Hot while in operation. Do not touch. Keep children, clothing, furniture,
CAUTION:
gasoline and other liquids having ammable vapors away.
Figure 49
Hot while in operation. Do not touch. Keep children, clothing, furniture,
CAUTION:
gasoline and other liquids having ammable vapors away.
Figure 46
3. Place the front center log (#3) on the pin located on
the right side of the burner. (See Figure 47.)
1
2
3
Hot while in operation. Do not touch. Keep children, clothing, furniture,
CAUTION:
gasoline and other liquids having ammable vapors away.
Figure 47
6. Place the top center log (#6) to the right of the pilot
orice allowing the log to rest on top of the front right
log (#3) and the front left log (#2). (See Figure 50.)
1
5
2
4
3
6
Hot while in operation. Do not touch. Keep children, clothing, furniture,
CAUTION:
gasoline and other liquids having ammable vapors away.
Figure 50
28
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Page 29
VFF Vent Free Fireplace System
LOG AND MEDIA PLACEMENT
SPLIT TIMBER 24ST-R LOGS /STONEY
CREEK SC24-R LOGS PLACEMENT
1. Place bottom log (#1) on two (2) pins on rear of grate
assembly and push towards rear as far as possible.
Figure 51
Bottom Rear Log #1
Figure 51
2. Place the ember chunk (#2) with notch on both ends
on the grate bar right side of the burner adjacent to the
controls. Push towards rear as far as possible. Figure
52.
3. Place the ember chunk (#3) with notch on one end on
the grate bar left side of the burner with notch towards
rear. Push towards rear as far as possible. Figure 52
5. Place front bottom left log (#5) on left pin located on
burner and left grate bar. The right side of the log
should rest on log #4. Figure 54
6. Place mid right log (#6) on bottom rear log (#1) and
front bottom right log (#4) by placing notch on bottom
of log on locating block on log #1. Place front of log in
notch of log #4. Figure 54
Mid Right Log #6
Front Bottom Left
Log #5
Figure 54
7. Place mid rear log (#7) on bottom rear log (#1) and mid
right log (#6) by placing notch on bottom of log onto
locating block on log #1. Right side of log will rest on
log #6. Figure 55
Mid Rear Log #7
Ember Chunk Log #2
Ember Chunk
Log #3
(Notch on
one end)
Figure 52
(Notch on both ends)
4. Place front bottom right log (#4) on right pin located
on burner and right grate bar. Figure 53.
Front Bottom Log #4
Figure 55
8. Place mid left log (#8) on mid rear log (#7) and front
bottom log (#5) by placing notches on bottom of log
onto locating blocks on log #7 and log #5. Figure 50
9. Place center log (#9) onto front bottom left log (#5) by
placing notch on bottom of log #9 onto locating block on
log #5. The at triangle-shaped end of log #9 should be
towards front with pointed end of log resting on bottom
rear log (#1). Figure 56
Figure 53
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29
Page 30
LOG AND MEDIA PLACEMENT
VFF Vent Free Fireplace System
Center Log #9
Mid Left Log #8
Figure 56
10. Place top front right log (#10) onto mid right log (#6) by
placing notch on bottom of log onto locating block on
log #6. Rest bottom end of log onto grate bar. Figure
57.
11. Place top front left log (#11) onto mid left log (#8) by
placing notch on bottom of log onto locating block on
log #8. Rest bottom end of log onto grate bar. Figure
57
Top Front
Left Log #11
Figure 57
Top Front
Right Log #10
13. Place log #13 onto log #12 and top front right log (#10)
by placing notch on bottom of log onto locating block
on log #12. Rest bottom of log onto log #10 and center
log (#9). Figure 59
Log #13
(SC2430EK
Enhancement Kit)
Figure 59
GLASS ONLY PLACEMENT
NOTE: Two (2) bags of glass are supplied with the VFF32
replace and three (3) are supplied with the VFF36 replace. All of the supplied bags may be used to cover the
entire oor and burner. We advise against using additional
glass as too much can cut off the proper amount of air the
burner needs to operate cleanly. This may cause sooting.
1. Spread glass evenly in one layer over the entire oor
and burner. Be sure to use a single layer only over the
ported area so as not to impinge the ame.
2. Turn burner on and adjust glass over ported areas to
achieve an even, clean ame.
12. Place log #12 onto mid left log (#8) and mid rear log
(#7) by placing notch on bottom of log onto locating
block on log #8. Rest right end of log onto top of log
#7. Figure 58
Log #12 (SC2430EK
Enhancement Kit)
Figure 58
30
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Figure 60
Page 31
VFF Vent Free Fireplace System
FLAME APPEARANCE
PILOT AND BURNER FLAME APPEARANCE
Flames from the pilot, front and rear burner should be
visually checked as soon as the heater is installed.
In addition, periodically check the ames visually during
operation.
MILLIVOLT CONTROL
Thermocouple
for Natural Gas
Thermocouple
for LP
Correct Pilot Flame Appearance
Figure 61. Millivolt Control Pilot Flame Appearance
Thermocouple
for Natural Gas
VFF32C/VFF36C MODELS
In normal operation at full rate after 15 minutes, the following
ame appearances should be observed:
Burner will have a random pattern of yellow ames. Figure 64
Figure 63. VFF Traditional with KW24-R Logs Flame Appearance
Thermocouple
for LP
Incorrect Pilot Flame Appearance
Figure 62. Millivolt Control Pilot Flame Appearance
CHECKING THE PILOT FLAME
The pilot ame must always be present when the heater
is in operation. It should just touch the top of the thermocouple tip for natural. Refer to Figure 61 for correct pilot
ame.
If the pilot ame does not touch the thermocouple, then
the main burner cannot function reliably. Refer to Figure
56 for incorrect shape of pilot ame.
CHECKING BURNER FLAME
VFF32L/VFF36L MODELS
In normal operation at full rate after 15 minutes, the
following ame appearances should be observed:
Burner will have a random pattern of yellow ames. Figure
63 There should be glowing embers in front of burner.
NOTE: The front ames and embers will be an opaque
orange color during the burn off time.
Figure 64. VFF Contemporary Flame Appearance
OPERATING INSTRUCTIONS
Avoid any drafts that alter burner ame patterns. Do
not allow fans to blow directly into the replace. Do not
place a blower inside the burn area of the rebox. Ceiling
fans may create drafts that alter ame patterns. Sooting
and improper burning will result.
During manufacturing, fabricating and shipping, various
components of this appliance are treated with certain oils,
lms or bonding agents. These chemicals are not harmful,
but may produce annoying smoke and smells as they are
burned off during the initial operation of the appliance,
possibly causing headaches or eye or lung irritation. This
is a normal and temporary occurrence.
The initial break-in operation should last six hours with the
burner at the highest setting. Provide maximum ventilation
by opening windows or doors to allow odors to dissipate.
Any odors remaining after this initial break-in will be slight
and will disappear with continued use.
This appliance must not be used with glass doors in the
closed position. This can lead to pilot outages and severe
sooting outside the replace.
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31
Page 32
OPERATING INSTRUCTIONS
VFF Vent Free Fireplace System
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instruction exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
A. This appliance is equipped with a piezo ignition device which automatically lights the pilot. If the piezo
is not working properly see Match Lighting Instructions.
B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the oor
because some gas is heavier than air and will settle on the oor.
WHAT TO DO IF YOU SMELL GAS:
• Do not attempt to light any appliance.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the re department.
C. Use only your hand to push in, or turn the gas control knob. Never use tools. If the knob will not push
in or turn by hand, don't try to repair it. Call a qualied service technician. Force or attempted repair
may result in a re or explosion.
D. Do not use this appliance if any part of it has been under water. Immediately call a qualied service
technician to inspect the appliance and to replace any part of the control system and any gas control
that has been under water.
On/Off Switch
Piezo Ignitor Control Knobs
Blower Control
Location of Piezo Ignitor, Control Knobs and Switch on Millivolt Unit, Hi/Lo Remote Control and Manual Unit
32
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 33
VFF Vent Free Fireplace System
OPERATING INSTRUCTIONS
MILLIVOLT/THERMOSTAT CONTROL
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information label.
2. Make sure the manual shutoff valve is fully open.
3. This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo
ignitor does not light the pilot, refer to instructions for Match Lighting Instructions on the following page.
4. Turn gas control knob clockwise to the OFF position and turn ON/OFF switch to OFF position.
5. Wait (5) minutes to clear out any gas. Then smell for gas, including near the oor. If you smell gas,
STOP! Follow "B" in the safety information label. If you don't smell gas, go to next step.
6. From OFF position, turn the gas control knob counterclockwise
knob for 5 seconds. NOTE: If you are running the heater for the rst time, it will be necessary to
press in the control knob for 30 seconds to allow air to bleed out of the gas piping.
7. With the control knob pushed in, push in and release the piezo ignitor button to light the pilot.
8. Continue pushing the control knob in for a further 60 seconds to prevent the ame detector from shutting off the gas while the probe is warming up. Release the control knob.
9. Turn gas control knob counterclockwise
to the ON position.
10. After the pilot has been lit for one minute, the burners can be turned on. Turn the ON/OFF switch to
ON position or adjust thermostat to desired setting.
11. If the gas logs will not operate, follow the instructions “To Turn Off Gas To Appliance” below and call
your service technician or gas supplier.
to IGN position. Push in control
On/Off Switch
Piezo Ignitor
Pilot
Control Knobs
Millivolt Controls
Blower Control
TO TURN OFF GAS TO HEATER
1. Turn control knob clockwise to OFF position to completely shut off the heater.
2. If applicable: Turn ON/OFF switch to OFF position and/or set thermostat (if present) to lowest setting.
3. If applicable: Turn off all electric power to the heater.
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33
Page 34
OPERATING INSTRUCTIONS
VFF Vent Free Fireplace System
MATCH LIGHTING INSTRUCTIONS
1. Remove any items necessary for easy access to the pilot (for example: logs, screens, etc.).
2. Follow appropriate lighting instructions found previously. Instead of pushing and releasing the piezo
button, light a match and hold the ame to the end of the pilot and ignite the pilot.
3. After control knob has been released and pilot stays lit, reinstall any items that were removed for pilot
access.
4. Call a qualied service technician for repair or replacement of the piezo ignitor.
BLOWER OPERATION
Blower Control
Figure 65. Location of Blower Control
Locate the blower control by opening control access door.
The variable controlled thermostat blower is located to the
right of heater controls. .
In the OFF position, the blower will not operate; however,
the heater can be operated without the blower being ON. In
the ON (AUTO) position, the blower will start when the thermostat senses a sufcient increase in rebox temperature.
34
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
NOTE: Your gas logs and blower will not turn on and off
at the same time. The gas logs may burn several minutes
before blower turns on. The blower will continue to run for
several minutes after the ames have turned off.
Page 35
VFF Vent Free Fireplace System
WARNING: Turn off heater and allow to cool before cleaning. Disconnect electrical
power before cleaning or servicing.
CLEANING AND SERVICING
ANNUAL CLEANING/INSPECTION
Refer to parts diagram for location of items discussed
below.
Annual inspection and cleaning by your dealer or qualied
service technician is recommended to prevent malfunction
and/or sooting.
Remove logs, handling carefully by holding gently at each
end. Gloves are recommended. If skin becomes irritated,
wash gently with soap and water. Refer to manual for
correct log placement.
• Inspect and clean burner air intake holes. Remove
lint or particles with vacuum, brush or pipe cleaners.
Failure to keep air intake holes clean will result in
sooting and poor combustion.
• Inspect and clean all burner ports.
• Inspect ODS pilot for operation and accumulation of
lint at air intake holes.
• Verify ame pattern and log placement for proper
operation.
• Verify smooth and responsive ignition of main burner
and rear burner.
PERIODIC CLEANING
Refer to parts diagram for location of items discussed
below.
• Do not use cleaning uid to clean logs or any part of
heater.
• Brush logs with soft bristle brush or vacuum with
brush attachment.
• Vacuum loose particles and dust from the front and
rear burner, control and piezo covers and grate
weldment.
• Inspect and clean burner air intake holes. Remove
lint or particles with vacuum, brush, or pipe cleaners.
Failure to keep air intake holes clean will result in
sooting and poor combustion.
• External case should be dusted and wiped with a
wet soapy cloth.
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35
Page 36
OPTIONAL ACCESSORIES
INSTALLING OPTIONAL FIREBRICK
PANELS
NOTE: Firebrick liner kits may be used only with the VFF
vent free replace systems. Please verify the size and
model number of your insert to be certain the kit you purchased is correct.
KIT CONTENTS:
• One (1) Center panel
• Two (2) self-drilling #8 screws
• One (1) Left panel
• Two (2) Brick retainer brackets
• One (1) Right panel
TOOLS REQUIRED:
Drill with 1/4" hex head or Phillips bit
INSTRUCTIONS:
1. Remove screen frame, stones, reglass or logs (if applicable) per the VFF Installation and Operating Instructions.
2. Place rear ceramic rebrick panel against the center of
the rear wall of the rebox. Place on rear log support
bracket.
3. Place left and right ceramic rebrick panels against
rebox sides and attach at the top with retainer bracket
with supplied self drilling screws.
4. Replace reglass, stones and/or logs as applicable
and re-install screen frame.
VFF Vent Free Fireplace System
Retainer
Brackets
Figure 66. Install Side Firebrick
Panel
36
Figure 67. Install Back Firebrick Panel
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 37
VFF Vent Free Fireplace System
OPTIONAL ACCESSORIES
INSTALLING OPTIONAL PORCELAIN
PANELS
NOTE: Porcelain liner kits are approved for use with op-
tional reglass and log kits. These kits are designed to t
VFF vent free replace systems. Please verify the size
and model number of your replace to be certain the kit
you purchased is correct.
KIT CONTENTS:
• One (1) Right panel
• One (1) Left panel
• One (1) Rear panel
• Four (4) Self-drilling #8 screws
INSTALLATION INSTRUCTIONS:
1. Remove screen frame, stones, reglass or logs (if applicable).
2. Place rear panel against the center of the rear wall of
the rebox.
3. Place left and right panels against rebox sides and attach top anges of the panels using self-drilling screws
provided.
4. Replace reglass or logs as applicable and re-install
screen frame.
INSTALLING OPTIONAL BLACK MAGIC
PANELS
NOTE: Black Magic glass liner kits are approved for
use with optional reglass and log kits. These kits are
designed to t VFF vent free replace systems. Please
verify the size and model number of your replace to be
certain the kit you purchased is correct.
KIT CONTENTS:
• One (1) Center panel
• One (1) Left panel
• One (1) Right panel
• Two (2) Glass retainer brackets
• Two (2) Self drilling #8 screws
INSTALLATION INSTRUCTIONS:
1. Remove screen frame, reglass or logs (if applicable).
2. NOTE: All panels will be installed with the dimples in
the glass facing the rebox.
Place rear glass liner panel against the center of the
rear wall of the rebox.
3. Place left and right glass liner panels against rebox
sides and attach at the top with retainer bracket using
supplied screws.
4. Replace reglass or logs as applicable and re-install
screen frame.
Figure 68. Install Porcelain Panels
Figure 69. Install Black Magic Glass Panels
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37
Page 38
TROUBLESHOOTING
WARNING: Turn appliance OFF and allow to cool before servicing. Only a qualied
service person should service and repair the heater.
NOTE: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM POSSIBLE CAUSE SOLUTION
When ignitor button is pressed,
there is no spark at ODS/pilot.
Appliance produces unwanted
odors.
Appliance shuts off during use. 1. Not enough fresh air is available for
Gas odor even when control
knob is in OFF position.
1. Ignitor electrode positioned wrong.
2. Ignitor electrode is broken.
3. Ignitor electrode not connected to
ignitor cable.
4. Ignitor cable pinched or wet. Keep
ignitor cable dry.
5. Broken ignitor cable.
6. Bad piezo ignitor.
1. Appliance burning vapors from paint,
hair spray, glues, etc.
2. Gas leak.
3. Initial burn off.
ODS/ pilot to operate.
2. Low line pressure.
3. ODS/pilot is partially clogged.
4. Defective Thermopile.
5. Restrictions in incoming air ow
1. Gas leak.
2. Control valve defective.
1 Replace ignitor.
2. Replace ignitor.
3. Reconnect ignitor cable.
4. Free ignitor cable if pinched by any metal or
tubing.
5. Replace ignitor cable.
6. Replace piezo ignitor.
1. Ventilate room. Stop using odor causing products while heater is running.
2. Locate and correct all leaks.
3. Ventilate room and turn unit on high until odor
is gone. Odor should be gone after 6 hours of
continuous use.
1. Open window and/or door for ventilation.
2. Contact local gas company.
3. Clean ODS/pilot.
4. Check pilot ame, check wire connections, check
output, should be 325 millivolts across TH/TP and
TP Terminals with ON/OFF switches off.
5. Check for bottom riser on glass door, sunken
replace, excessive lava rock/cinders densely
packed against grate.
1. Locate and correct all leaks.
2. Replace control valve.
VFF Vent Free Fireplace System
When ignitor button is pressed,
there is spark at ODS pilot, but
no ignition.
38
1. Gas supply turned off or manual
shutoff valve closed.
2. Control knob not in PILOT position.
3. Control knob not pressed in while in
PILOT position.
4. Air in gas lines when installed.
5. ODS/pilot is clogged.
6. Gas regulator setting is not correct.
1. Turn on gas supply or open manual shutoff
valve.
2. Turn control knob to PILOT position.
3. Press in control knob while in PILOT position.
4. Continue holding down control knob. Repeat
igniting operation until air is removed.
5. Replace ODS/pilot assembly or get it serviced.
6. Replace gas regulator.
continued on following page
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 39
VFF Vent Free Fireplace System
OBSERVED PROBLEM POSSIBLE CAUSE SOLUTION
ODS/pilot lights, but flame
goes out when control knob is
released.
Burner does not light after
ODS/pilot is lit.
Burner backres during combustion.
Slight smoke or odor during
initial operation.
Logs appear to smoke after
initial operation.
Heater produces a whistling
noise when burner is lit.
No gas to pilot. 1. LP-regulator shut down due to inlet
Blower does not work. 1. Power cord not plugged in.
1. Control knob not fully pressed in.
2. Control knob not pressed in long
enough.
3. Manual shutoff valve not fully open.
4. Thermocouple connection loose at
control valve.
5. Pilot ame not touching thermocouple, which allows thermocouple to
cool, causing pilot ame to go out.
This problem could be caused by
either low gas pressure, or a dirty
or partially clogged ODS/pilot.
6. Thermocouple damaged.
7. Control valve damaged.
1. Burner orice is clogged.
2. Burner orice diameter is too small.
3. Inlet gas pressure is too low.
1. Manifold pressure is too low.
2. Burner orice is clogged.
1. Burner orice is clogged or damaged.
2. Burner is damaged.
3. Gas regulator defective.
1. Vapors from paint or curing process of
logs.
2. Vapors or smoke continue after
heater is run with damper or window
open for several hours.
1. Turning control knob to HIGH position when burner is cold.
2. Air in gas line.
3. Dirty or partially clogged burner orices.
pressure too high.
2. Loose wire connections.
3. Defective blower thermostat.
1. Press in control knob fully.
2. After ODS/pilot lights, keep control knob pressed
in for 30 seconds.
3. Fully open manual shutoff valve.
4. Hand tighten thermocouple connection until
snug, then tighten 1/4 turn more.
5a.Contact local gas company.
5b.Clean pilot with vacuum cleaner.
6. Replace thermocouple.
7. Replace control valve.
1. Clean orice.
2.
Replace burner orice.
3.
Contact qualied service person.
1. Contact local gas company.
2. Clean burner or replace burner orice.
1. Clean burner or replace burner orice.
2. Replace burner.
3. Replace gas regulator.
1. Problem will stop after a few hours of operation.
Run the heater with the damper open if you have
one, or open a window for the rst few hours.
2. Log heater is intended to be smokeless. Turn
OFF heater and call qualied service person.
1. Turn control knob to LOW position and let warm
up for a minute.
2. Operate burner until air is removed from line.
Have gas line checked by local gas company.
3. Clean burner or replace burner orice.
1. Verify LP tank regulator is installed and set at
11" to 13" w.c.
2. Replace regulator on heater.
1. Plug power cord into junction box found in lower
access level.
2. Check wire connections, reconnect if loose.
3. Replace thermostat.
TROUBLESHOOTING
WARNING: If the gas quality is bad, your pilot may not stay lit, the burners may produce
soot and the heater may backre when lit. If the gas quality or pressure is low, contact
your local gas supplier immediately.
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
39
Page 40
TROUBLESHOOTING
IPI SYSTEM
VFF Vent Free Fireplace System
Flip the master switch to the
ON position
Press the wall switch to the
ON position
No beep or flashing
green light in about 5
seconds
No beep
No sound from
valve indicating
pilot solenoid
opened
No spark at pilot
Pilot doesn't light
Main burner
doesn't light
Make sure control board is
connected to battery pack wire
harness. Make sure AC
adaptor is plugged into control
Check wiring connections
between switch and board
Check wiring connections
between valve and board
Inspect gray ignitor wire
connection at board and pilot.
Check gas supply.
Flame not engulfing flame
sensor or pilot flame too
Battery polarity wrong?
Batteries low? Change batteries.
AC adaptor plugged into
junction box?
Check that ground
wire has solid
connection
Reinstall batteries correctly.
Plug the AC adaptor in
Correct wiring if necessary
Correct wiring if necessary
Reconnect wire if disconne cted.
Replace ignitor wire if damaged.
Adjust sparker position such that t he
spark is in the path of the gas flow or
replace the pilot
Adjust sensor position or replace the
pilot.
Cold climate switch
No function Check the cold climate switch and control
Replace cold climate switch
40
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 41
VFF Vent Free Fireplace System
VFF FIREBOX PARTS
REPLACEMENT PARTS
1
3
2
REF. DESCRIPTION QTY VFF32 VFF36
1. CANOPY 1 20308199K 20308156K
2. SCREEN ASSEMBLY 1 20308196K 20308187K
3. LEFT FIREBRICK (OPTIONAL) 1
4. CENTER FIREBRICK (OPTIONAL) 1
5. RIGHT FIREBRICK (OPTIONAL) 1
6. BLOWER (OPTIONAL) 1 BLOTMC BLOTMC
7. ACCESS PANEL 1 20308200 20307282
N/A OUTSIDE AIR KIT 1 AK4 AK4
N/A LEFT PORCELAIN PANEL (OPTIONAL) 1 20307907K 20307862K
N/A CENTER PORCELAIN PANEL (OPTIONAL) 1 20307906K 20307861K
N/A RIGHT PORCELAIN PANEL (OPTIONAL) 1 20307908K 20307863K
N/A LEFT BLACK MAGIC GLASS PANEL (OPTIONAL) 1 20307910K 20307865K
N/A CENTER BLACK MAGIC GLASS PANEL (OPTIONAL) 1 20307909K 20307864K
N/A RIGHT BLACK MAGIC GLASS PANEL (OPTIONAL) 1 20307911K 20307866K
N/A REGULATOR TO PILOT TUBE 1 20308176K 20308176K
4
5
7
6
20307901K
(CINNAMON)
20307900K
(CINNAMON)
20307902K
(CINNAMON)
20307904K
(COLONIAL RED)
20307903K
(COLONIAL RED)
20307905K
(COLONIAL RED)
20307856K
(CINNAMON)
20307855K
(CINNAMON)
20307857K
(CINNAMON)
(COLONIAL RED)
(COLONIAL RED)
(COLONIAL RED)
20307859K
20307858K
20307860K
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
41
Page 42
REPLACEMENT PARTS
VFF32/VFF36 MILLIVOLT BURNER PARTS
VFF Vent Free Fireplace System
1
CONTEMPORARY
BURNER
5
10
11
2
3
12
6
7
4
TRADITIONAL
13
BURNER
9
8
REF DESCRIPTION QTY VFF32/36CNV VFF32/36CPV VFF32/36LNV VFF32/36LPV
1 On/Off Switch 1 32D0232 32D0232 32D0232 32D0232
2 Piezo Ignitor 1 14D0503 14D0503 14D0503 14D0503
3 ODS Pilot Assembly 1 14D0473 14D0477 14D0473 14D0477
4 Piezo Wire 1 00K0632 00K0632 00K0632 00K0632
5 Control Valve 1 14D0467 14D0468 14D0467 14D0468
6 Pilot Regulator 1 14D0469 N/A 14D0469 N/A
7 Burner Injector 1 20H3154 57D0612 20H3154 57D0612
8 Female Valve/Switch Wire 1 44D0500 44D0500 44D0500 44D0500
9 Male Valve/Switch Wire 1 44D0501 44D0501 44D0501 44D0501
10 Knob Extender 1.5" Hi/Low 1 37D0011 37D0011 37D0011 37D0011
11 Knob Extender 1.5" On/Off 1 37D0010 37D0010 37D0010 37D0010
12 Front Grate Assembly 1 76D0004 76D0004 76D0004 76D0004
13 Rear Log Bracket 1 20302502K 20302502K 20302502K 20302502K
ACCESSORIES
Flex Connector FLEXCON18
Wall Switch Kit MVWS
Hand Held Remote RCB, RCMT, TSMT
Hand Held Thermostat Remote RCST, TSST
Thermostat Sensor Kit TS
Rock Wool 81D2011 (TRADITIONAL ONLY)
42
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 43
VFF Vent Free Fireplace System
VFF32/VFF36 IPI BURNER PARTS
REPLACEMENT PARTS
5
6
TRADITIONAL
14
10
9
11
CONTEMPORARY
BURNER
7
1
2
8
3
4
13
REF DESCRIPTION QTY VFF32/36CNI VFF32/36CPI VFF32/36LNI VFF32/36LPI
1 Cold Climate Switch 1 95E0111 95E0111 95E0111 95E0111
2 On/Off Switch 1 32D0232 32D0232 32D0232 32D0232
3 Gas Valve 1 20307838K 20307839K 20307838K 20307839K
4 Control Box 1 95E0100 95E0100 95E0100 95E0100
5 ODS Module 1 20303179 20303179 20303179 20303179
6 ODS Pilot Assembly 1 26D2529 14D0476 26D2529 14D0476
7 ODS Module Wire 1 20301890 20301890 20301890 20301890
►
8 Control to ODS Module Wire 1 SRV4604-304 SRV4604-304 SRV4604-304 SRV4604-304
9 A/C Adapter 1 95E0105 95E0105 95E0105 95E0105
10 Burner Injector 1 20H3154 57D0612 20H3154 57D0612
11 Pilot Regulator 1 14D0469 N/A 14D0469 N/A
12 Piezo Wire 1 20303256K 20303256K 20303256K 20303256K
13 Front Grate Assembly 1 76D0004 76D0004 76D0004 76D0004
14 Rear Log Bracket 1 20302502K 20302502K 20302502K 20302502K
ACCESSORIES
Wall Switch Kit MVWS
Hand Held Remote RCB, RCMT, TSMT
Hand Held Thermostat Remote RCST, TSST
Thermostat Sensor Kit TS
Rock Wool 81D2011 (TRADITIONAL ONLY)
BURNER
12
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
43
Page 44
REPLACEMENT PARTS
VFF Vent Free Fireplace System
7
6
4
3
5
8
2
1
(BENEATH #8)
BERKLEY OAK REFRACTORY LOGS
REF. DESCRIPTION QUANTITY BO24-R BO24-F
1. Ember Chunk 1 81D0110K 81D0109K
2. Right Front Log 1 81D0067K 81D0091K
3. Right Rear Log 1 81D0068K 81D0092K
4. Left Rear Log 1 81D0069K 81D0093K
5. Left Front Log 1 81D0070K 81D0094K
6. Middle Left Log 1 81D0071K 81D0095K
7. Left Top Log 1 81D0072K 81D0096K
8. Right Top Log 1 81D0073K 81D0097K
44
REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 45
VFF Vent Free Fireplace System
REPLACEMENT PARTS
6
4
7
3
5
8
1
2
(BENEATH #7)
HIGHLAND OAK REFRACTORY LOGS
REF. DESCRIPTION QUANTITY HO24-R HO24-F
1. Ember Chunk 1 81D0110K 81D0109K
2. Right Front Log 1 81D0019K 81D0043K
3. Right Rear Log 1 81D0020K 81D0044K
4. Left Rear Log 1 81D0021K 81D0045K
5. Left Front Log 1 81D0022K 81D0046K
6. Left Top Log 1 81D0023K 81D0047K
7. Right Top Log 1 81D0024K 81D0048K
8. Right Front Log 1 81D0025K 81D0049K
REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
45
Page 46
VFF Vent Free Fireplace System
1
5
6
2
3
4
BEACHCOMBER AND RIVERWOOD LOGS
Ref Description Qty BC18-R BC24-R BC30-R RW18-R RW24-R RW30-R
1 Rear log, #1 1 20308895 20308748 20308917 20308931 20308754 20308901
2 Front left log, #2 1 20308897 20308750 20308750 20308933 20308756 20308756
3 Front center log, #3 1 20308896 20308749 20308918 20308932 20308755 20308902
4 Right log, #4 1 20308752 20308752 20308921 20308758 20308758 20308905
5 Top left log, #5 1 20308751 20308751 20308751 20308935 20308757 20308757
6 Center top log, #6 1 20308900 20308753 20308753 20308936 20308759 20308759
REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
WARNING!
Failure to position the parts in accordance with these diagrams or failure to use only parts specically
approved with this appliance may result in property damage or personal injury.
46
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 47
VFF Vent Free Fireplace System
5
REPLACEMENT PARTS
7
3
6
2
4
KENTUCKY WILDWOOD REFRACTORY LOGS
REF DESCRIPTION QUANTITY KW24-R
1. Bottom front right log, #1 1 20305813
2. Bottom rear right log, #2 1 20305814
3. Bottom rear left log, #3 1 20305815
4. Bottom front left log, #4 1 20305816
5. Center left log, #5 1 20305817
6. Center top log, #6 1 20305818
7. Top right log, #7 1 20305819
1
REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
WARNING: Failure to position the parts in accordance with these diagrams or failure to
use only parts specically approved with this appliance may result in property damage
or personal injury.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
47
Page 48
13
REPLACEMENT PARTS
VFF Vent Free Fireplace System
12
8
11
3 (Ember
Chunk)
5
7
6
2 (Ember Chunk)
10
1
4
9
STONEY CREEK REFRACTORY LOGS
REF. DESCRIPTION QTY SC24-R
1 Bottom Rear Log #1 1 20303570K
2 Ember Chunk #2 (notch on both ends) 1 81D0110K
3 Ember Chunk # 3 (notch on one end) 1 20303559K
4 Front Bottom Right Log #4 1 20303571K
5 Front Bottom Left Log #5 1 20303572K
6 Mid Right Log #6 1 20303573K
7 Mid Rear Log #7 1 20303574K
8 Mid Left Log #8 1 20303575K
9 Center Log #9 1 20303576K
10 Top Front Right Log #10 1 20303577K
11 Top Front Left Log #11 1 20303578K
Enhancement Kit 1 SC2430EK
12 Log #12 1 20303579K
13 Log #13 1 20303580K
WARNING
Failure to position the parts in accordance with these diagrams or failure to use only parts specically
approved with this appliance may result in property damage or personal injury.
48
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
Page 49
VFF Vent Free Fireplace System
LIMITED LIFETIME WARRANTY POLICY
LIFETIME WARRANTY
The following components are warranted for life to the original owner, subject to proof of purchase:
Firebox, Combustion Chamber, Heat Exchanger, Grate and Stainless Steel Burners.
FIVE YEAR WARRANTY
The following components are warranted for 5 years to the original owner, subject of proof of purchase: Refractory cement Logs, Catalytic Filter and Aluminized Burners.
BASIC WARRANTY
Monessen warrants the components and materials in your gas appliance to be free from manufacturing and material defects for a period of one year from date of installation. After installation, if any
of the components manufactured by Monessen in the appliance are found to be defective in materials or workmanship, Monessen will, at its option, replace or repair the defective components at no
charge to the original owner. Monessen will also pay for reasonable labor costs incurred in replacing
or repairing such components for a period of one year from the date of installation. Any products
presented for warranty repair must be accompanied by a dated proof of purchase.
This Limited Warranty will be void if the appliance is not installed by a qualied installer in accordance
with the installation instructions. The Limited Lifetime Warranty will also be void if the appliance is
not operated and maintained according to the operating instructions supplied with the appliance,
and does not extend to (1) rebox/burner assembly damage by accident, neglect, misuse, abuse,
alteration, negligence of others, including the installation thereof by unqualied installers, (2) the costs
of removal, re-installation or transportation of defective parts on the appliance, or (3) incidental or
consequential damage. All service work must be performed by an authorized service representative.
This warranty is expressly in lieu of other warranties, express or implied, including the warranty of
merchantability of tness for purpose and of all other obligations or liabilities. Monessen does not
assume for it any other obligations or liability in connection with the sale or use of the appliance. In
states that do not allow limitations on how long an implied warranty lasts, or do not allow exclusion of
indirect damages, those limitations of exclusions may not apply to you. You may also have additional
rights not covered in this Limited Warranty.
Monessen reserves the right to investigate any and all claims against the Limited Warranty and decide upon method of settlement.
IF WARRANTY SERVICE IS NEEDED...
1. Contact your supplier. Make sure you have your warranty, your sales receipt and the model/
serial number of your Monessen product.
2. DO NOT ATTEMPT TO DO ANY SERVICE WORK YOURSELF.
Monessen • VFF 32/36 Owner Manual • 20308184 • Rev G • 06/19
49
Page 50
Monessen, a brand of Hearth & Home Technologies
7571 215th Street West, Lakeville, MN 50044
www.monessenhearth.com
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