Vermont Castings VFF32LI Manual

20308184 01.16 Rev. 2
This is an unvented gas-fired heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventil-
ation air must be provided. Refer to Page 8.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future
reference.
• Do not store or use gasoline or other
flammable 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 buildling 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 fire department.
• Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or loss of life.
VFF Vent Free Fireplace System
Installation & Operating Instructions
Models: VFF32LI, VFF36LI, VFF32LV, VFF36LV,
VFF32CI, VFF36CI, VFF32CV, VFF36CV

220308184
VFF Vent Free Fireplace System CONTENTS
Important Safety Information .....................................3
Codes......................................................................4
Product Features.........................................................5
Operation................................................................5
Gas Pressures........................................................5
Gas Specifications and Orifice Sizes......................5
Ignition Controls......................................................5
Pilot.........................................................................5
Thermal Generator..................................................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 Combusion and Ventilation.....................8
Fireplace Installation...................................................9
Fireplace Location...................................................9
Clearances............................................................10
Framing and Anchoring ........................................10
Securing Heater to Floor or Hearth....................... 11
Gas Line & Pressure .................................................12
Connecting the Gas Line ......................................12
Checking Gas Pressure: Millivolt Control..............12
Check Gas Pressure — IPI...................................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......................................16
Operating Instructions — Millivolt...........................16
For Your Safety Read Before Lighting ..................16
Lighting Pilot for the First Time .............................16
Lighting Pilot .........................................................17
Lighting Burner......................................................18
To Turn Off Gas.....................................................18
Electrical Installation — IPI.......................................19
Electrical Wiring....................................................19
Junction Box Wiring..............................................19
Wall Switch Installation .........................................20
IPI System Wiring Diagram...................................20
Operating Instructions — IPI....................................21
EcoLogic Control...................................................21
For Your Safety Read Before Lighting ..................22
What to Do If You Smell Gas ................................22
Operating Instructions...........................................22
To Turn Off Gas toAppliance................................22
Electrical Wiring — Fan ............................................19
Log and Media Placement ........................................23
Cast Iron Grate Installation...................................23
Rock Wool Placement...........................................23
Log Placement - BO24(F-R).................................24
Log Placement - HO24(F-R).................................25
Log Placement - KW24-R.....................................26
Log Placement - 24ST-R/SC24-R.........................28
Glass Only Placement ..........................................29
Flame Appearance.....................................................30
Pilot and Burner Flame Appearance.....................30
Check the Pilot Flame...........................................30
Checking Burner Flame........................................30
Operating Instructions...........................................30
Operating Instructions..............................................31
For Your Safety Read Before Lighting ..................31
Millivolt/Thermostat Control Lighting Instructions .32
To Turn Off Gas to Heater.....................................32
Match Lighting Instructions...................................33
Blower Operation..................................................33
Cleaning and Servicing.............................................34
Annual Cleaning and Inspection...........................34
Periodic Cleaning .................................................34
Optional Accessories................................................35
Installing Optional Firebrick Panels.......................35
Installing Optional Porcelain Panels .....................36
Installing Optional Black Magic Panels.................36
Outside Combustion Air ........................................... 37
Troubleshooting ........................................................40
Replacement Parts....................................................43
VFF Firebox Parts ................................................43
VFF32/36 Millivolt Burner Parts ...........................44
VFF32/36 IPI Burner Parts ...................................45
Log Parts...............................................................46
Warranty.....................................................................51
Thank you and congratulations on your purchase of a Vermont Castings Group 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 fire hazard and will void the warranty.

20308184 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 fire, burns,
explosion or carbon monoxide poisoning.
• Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner flame
patterns.
• Do not use a blower insert, heat exchanger insert or other accessory, not approved for use with
this heater where applicable.
13. Avoidanydraftsthatalterburnerflamepatterns. Donot
allow fans to blow directly into fireplace. Do not place
a blower inside burn area of firebox. Ceiling fans may
create drafts that alter burner flame patterns. Sooting
and improper burning will occur.
14. CAUTION: Candles, incense, oil lamps, etc. produce
combustion byproducts including soot. Vent-free
appliances will not filter or clean soot produced by
these types of products. In addition, the smoke and/
oraromatics(scents) maybereburned inthevent-free
appliancewhich canproduce odors.It isrecommended
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. Provi-
sionsforadequate combustionand ventilationairmust
be provided. Refer to page 8.
16. This heater shall not be installed in a room or space
unlesstherequired volume ofindoorcombustion airis
providedbythe method describedinthe NationalFuel
Gas Code, ANSI Z223.1/NFPA 54, the International
Fuel Gas Code or applicable local codes.
17. Keeproomareaclearand freefrom combustiblemate-
rials,gasolineand otherflammable vaporsandliquids.
18. Unventedgasheatersareasupplementalzoneheater.
They are not intended to be the primary heating appli-
ance.
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. Duringmanufacturing, fabricatingandshipping,various
components of this appliance are treated with certain
oils, films or bonding agents. These chemicals are not
harmful but may produce annoying smoke and smells
astheyare burnedoffduringthe initialoperationof the
appliance; possibly causing headaches or eye or lung
irritation. This is a normal and temporary occurrence.
1. Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
2. Childrenandadults shouldbealerted tothehazard
of high surface temperature and should stay away
to avoid burns or clothing ignition.
3. Young childrenshould becarefully supervisedwhen
they are in the same room with the appliance.
4. Do not place clothing or other flammable 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. Installationandrepair shouldbedonebya qualified
service person.
7. Toprevent malfunctionand/orsooting, anunvented
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 flu with
headaches,dizziness and/ornausea. Ifyouhavethese
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. Correctinstallationof therefractorycement orceramic
fiber logs, proper location of the heater, and annual
cleaningare necessaryto avoidpotentialproblemswith
sooting.Sooting,resultingfromimproper installationor
operation,cansettle onsurfacesoutside thefireplace.
See log placement instructions for proper installation.

420308184
VFF Vent Free Fireplace System IMPORTANT SAFETY INFORMATION
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
Theinitialbreak-in operationshouldlast six hourswith
the burner at the highest setting. Provide maximum
ventilation by opening windows or doors to allow
odorstodissipate.Any odorsremainingafter thisinitial
break-in period will be slight and will disappear with
continued use.
21. Input ratings are shown in BTU per hour and are for
elevationsupto2,000feet. Forelevations above2,000
feet,inputratingsshouldbereduced4percentforeach
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. Donotuse thisroomheater if anypart has beenunder
water. Immediately call a qualified service technician
to inspect the room heater and to replace any part of
thecontrolsystemandany gascontrol whichhasbeen
under water.
24. Never burn solid fuels in a fireplace where a unvented
room heater is installed.
25. Always have a fireplace 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.
THISAPPLIANCE IS ONLY FOR USE WITH THE
TYPE OF GAS INDICATED ON THE RATING
PLATE. THIS APPLIANCE IS NOT CONVERT-
IBLE FOR USE WITH OTHER GASES.
WARNING: Never connect unit to
private (non-utility) gas wells. This gas
is commonly known as wellhead gas.

20308184 5
VFF Vent Free Fireplace System
PRODUCT FEATURES
OPERATION
This unvented gas heater requires no outside venting
and burns cleanly with excellent heating efficiency. As a
zero-clearance appliance, it can be installed against (or
recessed into) any wall that is accessible to a gas line.
Piezo Ignition
Fireplace
Screen
Control Knobs
Figure 1 -
VFF Shown with Control Access Door Open
On/Off Switch
GAS PRESSURES
Control Fuel Millivolt and IPI
Regulator Pressure Nat. 3.5" w.c.
Pilot Regulator Nat. 3.5" w.c.
Max. Inlet Pressure Nat. 10.5" w.c.
Min. Inlet Pressure Nat. 5.0" w.c.
Regulator Pressure LP 10.0" w.c.
Max. Inlet Pressure LP 13.0" w.c.
Min. Inlet Pressure LP 11.0" w.c.
GAS SPECIFICATIONS AND ORIFICE SIZES
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
MODEL FUEL CONTROL MAX BTU MIN BTU ORIFICE SIZE
VFF32CNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF32CPV LP MILLIVOLT 36,000 28,000 #49
VFF32CNI NAT IPI 37,000 25,000 3.00mm
VFF32CPI LP IPI 36,000 28,000 #49
VFF32LNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF32LPV LP MILLIVOLT 36,000 28,000 #49
VFF32LNI NAT IPI 37,000 25,000 3.00mm
VFF32LPI LP IPI 36,000 28,000 #49
VFF36CNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF36CPV LP MILLIVOLT 36,000 28,000 #49
VFF36CNI NAT IPI 37,000 25,000 3.00mm
VFF36CPI LP IPI 36,000 28,000 #49
VFF36LNV NAT MILLIVOLT 37,000 25,000 3.00mm
VFF36LPV LP MILLIVOLT 36,000 28,000 #49
VFF36LNI NAT IPI 37,000 25,000 3.00mm
VFF36LPI LP IPI 36,000 28,000 #49
IGNITION CONTROLS (MILLIVOLT ONLY)
Piezo ignitor allows ignition of the pilot without the use of
matches or batteries.
Millivolt control has four (4) positions:
OFF - All gas to the gas logs is shut off at the
valve.
IGN - Valve position to light/maintain a standing
pilot.
ON - Valve position to turn ON/OFF log set with
remote switch/thermostat.
LOW/HI - Variable position to control flame height
(heat output).
THERMAL GENERATOR (MILLIVOLT ONLY)
The millivolt gas log pilot is fitted with a millivolt generator
to provide power for remote activation.
PILOT
Thegaslog heaterisfitted witha specially designedsafety
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.

620308184
VFF Vent Free Fireplace System
COLD CLIMATE OPTION (IPI Models Only)
NOTE: If you live in a cold climate, seal all cracks around
yourapplianceand wherevercold aircouldenter theroom,
with noncombustible material. It is especially important to
insulate the outside chase cavity between the studs and
under the floor on which the appliance rests, if the floor is
above ground level.
Your fireplace is equipped with an intermittent pilot ignition
(IPI) control.An IPI control with a standing pilot option pro-
videsthe dualbenefitof aneconomicalandenvironmentally
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 com-
parison, is characterized by a continuously burning pilot.
The benefit of a pilot which lights only when needed is fuel
savings. However, with no pilot burning in your fireplace,
unitsoperatingin colder climatesmayexperience 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 firebox, establishing a draft to
aid ignition becomes difficult. This is perfectly normal but
can be somewhat frustrating.
To remedythis issue,your fireplacehasbeendesignedwith
a cold climate pilot option, which, when active, maintains
a warmer temperature inside your firebox to make ignition
faster and more efficient. 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
controlcentertothe “On” (left)position.(Figure 2) You can
operateyourappliancein this moderegardlessof whether
you are using a remote control, wall switch or thermostat.
Cold Climate
Switch
Master Switch
COLD CLIMATE OPTION
Figure 2 -
Cold Climate Option

20308184 7
VFF Vent Free Fireplace System
O - Min. Rough Opening Width
Min. Rough
Opening
Depth
1/2"
or 5/8"
Min. Rough
Opening
Height
L
A
B
C
D
H
E
F
G
J
Q
S
S
R
I
P
N
K
M
FIREPLACE AND FRAMING DIMENSIONS
Figure 3 -
Fireplace and Framing Dimensions
Ref. VFF32 VFF36
A 37" (940 mm) 41" (1041 mm)
B 32" (813 mm) 36" (914 mm)
C34
1
⁄
2
" (876 mm) 34
1
⁄
2
" (876 mm)
D 29" (737 mm) 32" (813 mm)
E21
3
⁄
4
" (553 mm) 21
3
⁄
4
" (553 mm)
F 6" (152 mm) 6" (152 mm)
G5
7
⁄
16
16" (138 mm) 5
7
⁄
16
16" (138 mm)
H18
5
⁄
8
" (473 mm) 20
5
⁄
8
" (524 mm)
I2
1
⁄
2
" (64 mm) 2
1
⁄
2
" (64 mm)
J 16" (406 mm) 18" (457 mm)
K13
1
⁄
4
" (337 mm) 15
3
⁄
4
" (400 mm)
L23
3
⁄
8
" (594 mm) 27
3
⁄
8
" (695 mm)
M29
7
⁄
8
" (759 mm) 33
7
⁄
8
" (860 mm)
Framing Dimensions
N 35" (889 mm) 35" (889 mm)
O37
1
⁄
4
" (946 mm) 41
1
⁄
4
" (1048 mm)
P15
1
⁄
2
" (394 mm) 17
1
⁄
2
" (445 mm)
Q61
3
⁄
4
" (1568 mm) 68
7
⁄
8
" (1749 mm)
R33
1
⁄
2
" (784 mm) 37
1
⁄
8
" (943 mm)
S43
3
⁄
4
" (1111 mm) 48
3
⁄
4
" (1238 mm)

820308184
VFF Vent Free Fireplace System
GETTING STARTED
Makesureyouhavereceived allparts. Checkyourpacking
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 cemet or ceramic fiber logs sold sepa-
rately
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.
WHAT YOU WILLNEED FOR INSTALLATION:
You must have the following items available before pro-
ceeding 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 fireplace it is nec-
essary 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 repre-
sent the normal sequence of installation. Each installation
isunique,however,andmight requirea differentsequence.
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.
PRE-INSTALLATION INFORMATION
•Gloves are recommended when handling
refractory cement or ceramic fiber logs to
prevent skin irritation from loose fibers.
Logs are fragile — handle with care.
WARNING: WARNING—Do not install the heater:
•Where curtains, furniture, clothing, or
other flammable objects are less than
42" from the front of the heater.
•In high traffic areas.
•In windy or drafty areas.
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
themethodsdescribedintheNational Fuel Gas
Code, ANSI Z223.1/NFPA 54, the International
Fuel Gas Code or applicable local codes.
2. Install canopy and logs per instructions found in this
manual. The canopy MUST be installed for safe oper-
ation of the unit.
3. Field wire main power supply to units with fan kit. Refer
totheElectrical Sectionfoundin thismanual. (Electrical
connections should only be performed by an experi-
enced, licensed certified tradesman).
4. InstalloptionalON/OFF kiton unitswithmillivolt 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/certified tradesman).
6. Complete finish wall material and/or surround.
ADEQUATE COMBUSTION AND VENTILA-
TION AIR
This heater shall not be installed in a confined space or
unusuallytightconstruction unlessprovisions areprovided
for adequate combustion and ventilation air.
The National Fuel Gas Code, (ANSI Z223.1/NFPA54),
definesaconfined spaceasa space whosevolume is less
than 50 cubic feet per 1,000 BTU per hour (4.8m3per kw)
of the aggregate input rating of all appliances installed in
that space, and an unconfined space as a space whose
volume is not less than 50 cubic feet per 1,000 BTU per
hour (4.8 m3per kw) of the aggregate input rating of all
appliances installed in that space. Rooms communicating
directlywith thespace inwhich theappliances areinstalled,
throughopeningsnot furnishedwithdoors, areconsidered
a part of a confined space.

20308184 9
VFF Vent Free Fireplace System
FIREPLACE INSTALLATION
FIREPLACE LOCATION
Carefully select the best location for installation of your
unvented fireplace. The following factors should be taken
into consideration.
•Clearance to side wall, ceiling, woodwork and
windoworothercombustibles.Referto“Clearances”
section. Minimum clearances to combustibles must
be maintained.
• Location must not be affected by drafts caused by
kitchenexhaustfans,ceilingfans, returnair 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 traffic areas and
away from furniture and draperies due to heat
from firebox.
• Never obstruct the front opening of the unvented
fireplace or restrict the flow of combustion and ven-
tilation air.
• Minimizemodificationstoexistingconstruction. Refer
to Figure 5 below for location suggestions.
• Do not install in the vicinity where gasoline or other
flammableliquidsmay bestored.Theunventedfire-
boxmust bekeptclearandfreefromthecombustible
materials.
Figure 5 -
Possible Fireplace Locations
W
H
Counter Fireplace
Unusually tight construction is defined as construction
where:
a. walls and ceilings exposed to the outside atmosphere
have a continuous water vapor retarder with a rating of
1perm(6 x1011 kgper pa/sec-m2)orless withopenings
gasketed or sealed, and
b. weatherstrippinghasbeenaddedonopenablewindows
and doors, and
c. caulking or sealants are applied to areas such as joints
around window and door frames, between sole plates
and floors, 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 maxi-
mum heater rating per the definition of unconfined space:
BTU/Hr = (L1+ L2) Ft x (W) Ft x (H) Ft
50
Consider two connecting rooms with an open area
between, with the following dimensions:
L1= 151/2Ft., L2= 12 Ft., W = 12 Ft., H = 8 Ft.
BTU/Hr = (151/2 + 12) x (12) x (8)
50
Iftherewere adoorbetween the tworooms the calculation
would be based only on the room with the heater.
BTU/Hr = (151/2) x (12) x (8)
50
Figure 4 -
Combustion Air Calculation

10 20308184
VFF Vent Free Fireplace System FIREPLACE INSTALLATION
WARNING: The dimensions shown
in Figures 6, 7a, and 7b 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 fire hazard.
CLEARANCES
Ensure that minimum clearances shown in Figures 6 and
7aremaintained. Leftandright clearancesare determined
when facing the front of the firebox.
Follow these instructions carefully to ensure safe instal-
lation. Failure to follow these requirements may create a
fire 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 ceilingmust beatleast 42"from
the top of the firebox opening. Figure 6
Back Wall Clearance — The appliance may be placed
against a combustible back wall.
Floor Clearance —The fireplacemaybe installeddirectly
on a combustible floor or a raised platform of an appropri-
ateheight.Do notplacefireplace on carpeting,vinyl,tile or
othersoftfloorcoverings.Itmay,however,be placedon flat
wood, plywood, particle board or other hard surfaces. Be
sure fireplace rests on a solid continuous floor or platform
with appropriate framing for support and so that no cold
air can enter from under the firebox.
Mantel clearances — The canopy supplied with the unit
must be installed. If a combustible mantel is installed. It
mustmeettheclearancerequirementsdetailedin Figure 7.
NOTE: The Vermont Castings Group Barrington cabinet
modelseries BWC400and BWC500arespeciallydesigned
to comply with all mantel temperature requirements. Any
custom-builtmantel mustcomplywithallclearancerequire-
ments shown in this instruction manual.
9"
Minimum
9"
Minimum
42" Minimum
Figure 6 -
Sidewall and Ceiling Clearances
Figure 7b-
Mantel Leg Clearances
45°
1”
256O”
3” 5”
6”
56O”
56O”
56O”6”756O”
756O”
9”
Finish Wall
Combustible
Material Area
256O”
6”
8”
10”
12”
12”
16” 19”21”23”
Combustible
material can
contact top of
fireplace
Non-combustible material
Figure 7a-
Mantel Clearances

20308184 11
VFF Vent Free Fireplace System
Nail Sides
Through Nailing
Flanges
Figure 8 -
Nailing Flanges
FIREPLACE INSTALLATION
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
floor or hearth.
1. Open the control access door and remove the screen.
2.
Secure the firebox with two anchoring screws (
3⁄16
" x 1
1⁄4
"
length) supplied with the fireplace system. Figure 9
NOTE: If the unit is mounted on carpeting, tile or
combustiblematerialwithoutthehearth, ametal orwooden
base covering the entire width and depth of the base must
be installed.
Figure 9 -
Secure Fireplace to Floor or Hearth
FRAMING AND ANCHORING
Ifunitis tobe“built in”,fireplace framingcan bebuiltbefore
or after the appliance is set in place. BE SURE THATALL
PACKING MATERIALHAS BEENREMOVED FROM THE
UNDERSIDE OF THE UNIT PRIOR TO SETTING THE
FIREBOX IN PLACE. Constructfireplace framingfollowing
Fireplace and Framing Dimensions. The framing headers
may rest directly on top of the firebox.
The fireplace may be installed directly on a combustible
floor or a raised platform of an appropriate height. Do
not place fireplace on carpeting, vinyl, tile or other soft
floor coverings. It may, however, be placed on flat wood,
plywood, particle board or other hard surfaces. Be sure
fireplace rests on a solid continuous floor or platform with
appropriate framing for support and so that no cold air can
enter from under the firebox.
WARNING:Thefireplace mustbeinstalled
giving full consideration to the clearance
and height requirements identified in this
manual.
Anchor Screws
3⁄16" x 11⁄4"
Anchorfireplacetotheside framingmembersusing nailing
flanges.
1. Bendoutthe nailing flangeslocated on eachsideof the
firebox.
2. Slidethefireboxintopreparedframingorpositionfirebox
in its final position and frame later.
3. Levelthefireboxbycheckingthetopedgeofthefirebox.
Shim if necessary.
4. Anchor firebox to the side framing members using 8d
nails or other suitable fasteners. Figure 8
5. The canopy must be installed for safe operation of the
heater. Refer to canopy installation details.

Test Port
"OUT"
12 20308184
VFF Vent Free Fireplace System
CONNECTING THE GAS LINE
NOTICE: Aqualified gas appliance installer must connect
the heater to the gas supply. Consult all local codes.
GAS LINE & PRESSURE
To Fireplace
Pipe Coupling
Stainless
Flexible Tube
Pipe Locations Pressure
Tapping Point Instal-
lation
Manual Shutoff
Valve
Gas Supply
Inlet
Figure 10 -
Gas Connection
IMPORTANT: Loosen the pipe adapter on the flex tube
before installing to the system piping.
Alwaysusean externalregulator forallpropane/LPG heat-
ersonly, toreducethe supply tankpressureto a maximum
of 13" w.c. This is in addition to the internal regulator in the
heater valve.
To reach factory installed flex line, go through access door
on right or left side of firebox.
Figure 11 -
Access Holes
Manual Gas Shutoff
(Recommended Outlet
Positioned Vertical)
Stainless Flex Line
Access Door
for Gas Line
WARNING: Connecting directly to an
unregulated propane/LPG tank can
cause an explosion
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 sulfide 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 flow 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 10
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.
The stainless flex line is on the right side facing the fire-
place 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 allgasjoints fromthegas metertothe heatervalve for
leaksusinga gasanalyzeror soapandwater solutionafter
completing connection. DO NOT USEAN OPEN FLAME.
Check the gas pressure with the appliance burning and
the control set to HIGH.
Opencontrolaccess dooron eithersideofunitto findvalve
and regulator referred to below. Figure 11
CHECKING GAS PRESSURE – MILLIVOLT
CONTROL
Figure 12
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 con-
trol 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 12 -
Pressure Test Point Location Millivolt Control

20308184 13
VFF Vent Free Fireplace System
CHECK GAS PRESSURE – IPI
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 fireplace, STOP! Do not install the
appliance. Contact your dealer immediately.
2. To facilitate easier installation, a 18" (610 mm) flex 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
fireplace 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 13. After taking pressure reading, be sure and
turn captured screw clockwise firmly to reseal. Do not
over torque. Check test points for gas leaks.
Figure 13 –
IPI Valve
Pressure Inlet
Pilot Adjust-
ment Screw
Pressure
Outlet
FP3034
FINAL INSTALLATION
REMOVE SCREEN
NOTE: Fireplace screen must be removed to access log
box and to install canopy.
Figure 14
1. Remove bottom access panel.
2. Removing fireplace screen frame panel by pushing
screen frame panel up and out.
Figure 14 -
Remove Fireplace Screen Panel
INSTALL CANOPY
Figure 15
1. Align the black canopy with the holes in the top frame
assembly.
2. Install the three (3) screws (in owner’s manual packag-
ing)whichattach thecanopyto thetop frameassembly.
3. Tighten all screws. Make sure the canopy is level and
secure.
Figure 15 -
Install Canopy
WARNING: Do not operate the unit with-
out the screen frame panel and canopy
installed.
Canopy
Screws
Fireplace
Screen
Canopy
WARNING: Do NOT use open flame
to check for gas leaks.

14 20308184
VFF Vent Free Fireplace System
Figure 16 -
Wiring Diagram (Millivolt)
Field Installed Optional
Wall Switch or
Remote Receiver
Switch
On/Off
Switch
On/Off
Switch
ODS Pilot
Valve
ODS
Pilot
Spade
Terminal
FP2112a
TH = 3
TP = 1
TP/TH = 2
The millivolt valve is a self-powered combination gas con-
trolTHAT DOES NOT REQUIRE 110V AC TO OPERATE.
Refer to Figure 16 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 ther-
mostat installations.
NOTE: Thermostats and switches must be suitable for
millivolt operation.
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.
WARNING: Do NOT connect wall
switch to 110 V circuit.
WARNING: Label all wires prior to
disconnection when servicing controls.
Wiring errors can cause improper and
dangerous operation. Verify proper operation
after servicing.
ELECTRICAL WIRING — MILLIVOLT

20308184 15
VFF Vent Free Fireplace System
Figure 17 -
Install Remote Receiver
Check
Test To Test
Connect Meter
Leads to
Terminals
Switch or
Thermostat
Contacts Meter Reading Should Be
AComplete
System 2 & 3 Closed Closed
BThermopile
Output 1 & 2 Open Open
CONNECT REMOTE RECEIVER
THESE INSTRUCTIONS SUPERCEDE THE SECTION
ENTITLED “HEARTH MOUNT” IN THE MILLIVOLT
HAND-HELD REMOTE INSTRUCTIONS SUPPLIED
WITH THE REMOTE.
Figure 17
1. Remove bottom control door.
2. Connect the remote connector wires located in the unit
to the remote receiver.
3. StickVelcro®padswith self-adhesivebackingto bottom
of remote receiver and to floor of compartment behind
access panel.
4. Attach remote receiver to firebox 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.
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, pro-
ceed to Section B below.
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.
ELECTRICAL WIRING — MILLIVOLT
Remote Receiver

16 20308184
VFF Vent Free Fireplace System OPERATING INSTRUCTIONS—MILLIVOLT
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 floor
because some gas is heavier than air and will settle on the floor.
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 fire 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 qualified service technician. Force or attempted repair
may result in a fire or explosion.
D. Do not use this appliance if any part of it has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system and any gas control
that has been under water.
FOR YOUR SAFETY READ BEFORE LIGHTING
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 flowing, 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: If you do not follow these instruction exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
WARNING: NEVER use open flame
to check for gas leaks.

20308184 17
VFF Vent Free Fireplace System
OPERATING INSTRUCTIONS—MILLIVOLT
PILO
T
O
F
F
P
I
L
O
T
O
N
Continued on next page
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.
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.
LIGHTING PILOT
Pilot Position
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 FOR THE FIRST TIME
WARNING: NEVER use open flame
to check for gas leaks. WARNING: If using a soap and water
solution to test for leaks, DO NOT
spray solution onto control body.
WARNING: The control has an interlock device that does not allow the lighting of the
fireplace up to the moment the safety device of the flame has not interrupted the gas
flow. 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.

18 20308184
VFF Vent Free Fireplace System
PILOT
O
F
F
P
I
L
O
T
O
N
Wall Switch
LIGHTING BURNER
LIGHTING THE BURNER
Depressandturntheknob counterclockwise tothe“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.
Depress and turn knob clockwise to “OFF” position.
TO TURN OFF GAS
Off Position
PILOT
O
F
F
P
I
L
O
T
O
N
O
F
F
P
I
L
O
T
O
N
PILOT
Pilot Position On Position
OPERATING INSTRUCTIONS – MILLIVOLT

20308184 19
VFF Vent Free Fireplace System
ELECTRICAL WIRING
General
1. ThisfireplaceisequippedwithanIPIcontrolvalvewhich
operates on 6 volts. The 6 volt DC adapter plugs into
the fireplace junction box A/C power supply.
2. TheIPIsystem canalso beoperatedwithoutA/Cpower.
The system can run on four (4) “AA” batteries using the
optionalbattery backupforapproximatelysix(6)months
under normal use.
Optional Accessories
Thisfireplacemaybeusedwith awall switch,wall mounted
thermostat or IPI hand held remote control.
CAUTION
Label all wires before disconnecting when
servicing controls. Wiring errors can cause
improper and dangerous operation.
ELECTRICAL INSTALLATION — IPI
WARNING: Electrical connections should
onlybeperformedbyaqualified, 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.
Figure 18 –
Junction Box Wiring Diagram
Junction Box
Factory Supplied
Not Supplied
120V AC
60Hz
WARNING: Do NOT connect to a
110V circuit.
JUNCTION BOX WIRING
1. This should be done before framing the fireplace. Wire
the receptacle into an electrical circuit. Wire with mini-
mum 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 firebox 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 18.
Figure 19 -
BLOTMC Blower 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 firebox
must be connected to main power supply at time of fire-
box installation. The electrical connections must be made
before the firebox is framed and enclosed in the finished
walls.
BLACKBLACKWHITE
GREEN
BLACK
BLACKWHITE
Receptacle Junction
Box
120VAC
Speed Control

20 20308184
VFF Vent Free Fireplace System
RED
RED
RED
RED
RED BLACK
D/C POWER
GREEN
GROUND
BROWN
BLACK
BLACK
ORANGE
YELLOW
BLACK
BLACK
RED
CAUTION
Electrical connections should only be performed by a qualified, licensed electrician. Main
power supply must be turned off before connecting fans to the main electrical power supply
or performing service.
Figure 20 –
IPI System Wiring Diagram
IPI SYSTEM WIRING DIAGRAM
ELECTRICAL INSTALLATION – IPI
WALL SWITCH INSTALLATION
The wall switch wire connection is located off the wire
harness coming out of the IPI Control Board. The label is
wired'wallswitch'. Connect thelowvoltage switchwiresto
the two (2) terminals labeled "wall switch" from the control
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 20