Monessen VFI33LNV, VFI33LPI, VFI33CPV, VFI33LNI, VFI33LPV User Manual
VFI Series Vent Free Gas Fireplace
Installation and Operating Instructions
Models: VFI33L(N/P)(V/I), VFI33C(N/P)(V/I)
WARNING: If the information in this
manual is not followed exactly, a fi re or
explosion may result causing property
damage, personal injury or loss of life.
• Do not store or use gasoline or other
fl 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 fi re department.
• Installation and service must be performed
by a qualifi ed installer, service agency or
the gas supplier.
This is an unvented gas-fi 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 7.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future
reference.
20307670 5/15 Rev. 1
VFI33 Vent Free Gas Fireplace System
CONTENTS
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 fi re hazard and will void the warranty.
Important Safety Information .....................................3
Codes ......................................................................4
Product Features .........................................................5
VFI33 Controls ........................................................5
Operation ................................................................ 5
Gas Pressures ........................................................ 5
Gas Specifi cations and Orifi ce Sizes ......................5
Ignition Controls ......................................................5
Pilot .........................................................................5
Thermal Generator ..................................................5
Cold Climate Option ................................................ 5
Framing Dimensions ................................................... 6
Pre-installation Information ........................................7
Getting Started ........................................................ 7
What You Will Need for Installation .........................7
Clearances and Height Requirements .......................8
Before Installing the Fireplace Insert ......................8
Clearances ...................................................................9
Heat Resistant Material ..........................................9
Clearances and Installation ...................................... 10
Remove Screen .................................................... 10
Install Canopy ....................................................... 10
Installation .................................................................. 11
Secure Heater to Floor .......................................... 11
Connect Gas Line ...................................................... 12
Gas Pressure — Millivolt ..........................................13
Checking Gas Pressure: Millivolt Control ..............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
Lighting Pilot for the First Time .............................16
Lighting Pilot .........................................................17
Lighting Burner ......................................................18
To Turn Off Gas ..................................................... 18
Gas Pressure and Electrical Installation — IPI ....... 19
Check Gas Pressure — IPI ................................... 19
Electrical Wiring .................................................... 19
Junction Box Wiring ..............................................19
Wall Switch Installation .........................................20
IPI System Wiring Diagram ...................................20
Operating Instructions — IPI .................................... 21
For Your Safety Read Before Lighting ..................21
What to Do If You Smell Gas ................................21
Operating Instructions ........................................... 21
To Turn Off Gas ..................................................... 21
EcoLogic Control ...................................................22
Electrical Wiring — Fan ............................................23
Log Placement ........................................................... 24
Before You Begin ..................................................24
Cast Iron Grate Installation ...................................24
Rock Wool Placement ...........................................25
Berkley Oak Logs ..................................................25
Place the Decorative Rock ....................................26
Highland Oak Logs ...............................................27
Place the Decorative Rock ....................................28
Kentucky Wildwood Logs ...................................... 29
Flame Appearance and Operating Instructions ......30
Visual Flame Check ..............................................30
Check the Pilot Flame ........................................... 30
Thermostat and Millivolt Control ...........................30
Operating Instructions ........................................... 30
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
Troubleshooting ........................................................35
Replacement Parts ....................................................37
Firebox Assembly .................................................37
Millivolt Burner Assembly .....................................38
IPI Burner Assembly ............................................. 39
Berkley Oak Logs ..................................................40
Highland Oak Logs ...............................................41
Kentucky Wildwood Logs ...................................... 42
Warranty .....................................................................43
2
20307670
IMPORTANT SAFETY INFORMATION
VFI33 Vent Free Gas Fireplace System
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 fi re, burns,
explosion or carbon monoxide poisoning.
• Do not allow fans to blow directly into the fi replace. Avoid any drafts that alter burner fl 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 traffi c 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 fl 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 qualifi ed
service person.
7. T o 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 fl 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, Unvented Heaters.
11. Do not install the heaters in a bathroom or bedroom.
12. Correct installation of the ceramic fi 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 fi replace. See log place-
ment instructions for proper installation.
20307670
13. Avoid any drafts that alter burner fl ame patterns. Do not
allow fans to blow directly into fi replace. Do not place
a blower inside burn area of fi rebox. Ceiling fans may
create drafts that alter burner fl 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 fi 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.
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 fl 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, fi 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.
3
VFI33 Vent Free Gas Fireplace System
IMPORTANT SAFETY INFORMATION
The initial break-in operation should last four 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 qualifi ed 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 fi replace where a unvented
room heater is installed.
25. Always have a fi 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 ONL Y 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.
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
4
20307670
PRODUCT FEATURES
VFI33 Vent Free Gas Fireplace System
VFI33 CONTROLS
Surround
On/Off Switch
Piezo Ignitor
Control Knobs
Figure 1 Unvented Gas Heater with Control Access Door Open
Blower
OPERATION
This unvented gas heater requires no outside venting and
burns cleanly with high heating effi ciency.
GAS PRESSURES
Control Fuel Millivolt T-stat
Regulator Pressure Natural 3.5" w.c.
Pilot Regulator Natural 3.5" w.c.
Max. Inlet Pressure Natural 10.5" w.c.
Min. Inlet Pressure Natural 5.0" w.c.
Regulator Pressure LP 10.0" w.c.
Max. Inlet Pressure LP 13.0" w.c.
Min. Inlet Pressure LP 11.0" w.c.
GAS SPECIFICATIONS & ORIFICE SIZE
MODEL FUEL CONTROL
VFI33LNV NAT. Millivolt
VFI33LPV LP. Millivolt
VFI33CNV NAT. Millivolt 28,000 19,000 #38
VFI33CPV LP. Millivolt
VFI33LNI NAT. IPI 28,000 19,000 #38
VFI33LPI LP. IPI 27,000 22,000 #52
VFI33CNI NAT. IPI 28,000 19,000 #38
VFI33CPI LP. IPI
MAX. INPUT
(BTU/h)
28,000 19,000 #38
27,000 22,000 #52
27,000 22,000 #52
27,000 22,000 #52
NOTE: For LP models an external regulator is required
to reduce supply pressure to a maximum of 13" w.c.
MIN. INPUT
(BTU/h)
ORIFICE
SIZE
IGNITION CONTROLS
Piezo ignitor allows ignition of the pilot without the use of
matches or batteries.
Millivolt and EcoLogic® 2.0 controls have four (4)
positions:
OFF - All gas to the gas logs is shut off at the
valve.
IGN - Valve position to light/maintain a standing
pilot.
ON - Valve position to turn ON/OFF log set with
remote switch/thermostat.
LOW/HI - Variable position to control fl ame height
(heat output). Both front and rear burners
are in operation to provide realistic glow
and yellow fl ame.
PILOT
The gas log heater is fi tted with a specially designed safety
pilot light (ODS assembly) which senses the amount of
oxygen available in the room and shuts the gas log heater
off if the oxygen level begins to drop below a satisfactory
level. The pilot can only be re-lit when adequate fresh air
is available.
THERMAL GENERATOR
The millivolt gas log pilot is fi tted with a millivolt generator
to provide power for remote activation.
COLD CLIMATE OPTION (IPI Models Only)
NOTE: If you live in a cold climate, seal all cracks around
your appliance and wherever cold air could enter the room,
with noncombustible material. It is especially important to
insulate the outside chase cavity between the studs and
under the fl oor on which the appliance rests, if the fl oor is
above ground level.
Your fi replace is equipped with an intermittent pilot ignition
(IPI) control. An IPI control with a standing pilot option
provides the dual benefi t of an economical and environ-
mentally responsible product and one which lights easily
even in the coldest climates. When in intermittent pilot
20307670
5
VFI33 Vent Free Gas Fireplace System
Figure 2 Cold Climate Option
FRAMING DIMENSIONS
Cold Climate
Switch
Master Switch
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 benefi t of a pilot which lights only when needed
is fuel savings. However, with no pilot burning in your fi re-
place, 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 fi rebox, establishing
a draft to aid ignition becomes diffi cult. This is perfectly
normal but can be somewhat frustrating.
1
37
⁄4"
"
8
7
⁄
31
⁄4"
1
37
"
4
1
⁄
64
1/2"
or 5/8"
Rough
Opening
Height
T o remedy this issue, your fi replace has been designed with
a cold climate pilot option, which, when active, maintains
a warmer temperature inside your fi rebox to make ignition
faster and more effi cient. 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 3) Y ou can
operate your appliance in this mode regardless of whether
you are using a remote control, wall switch or thermostat.
Rough
Opening
Depth
16"
1
⁄2" Rough Opening Width
33
Figure 3 Framing Dimensions
6
27
1
⁄2"
20307670
PRE-INSTALLATION INFORMATION
VFI33 Vent Free Gas Fireplace System
FRAMING DIMENSIONS
If unit is to be “built in,” fi replace framing can be built before
or after the appliance is set in place. BE SURE THA T ALL
PACKING MATERIAL HAS BEEN REMOVED FROM
THE UNDERSIDE OF THE UNIT PRIOR TO SETTING
THE FIREBOX IN PLACE. Construct fi replace framing
following Figure 2. Refer to Figure 5 on Page 9 for fi replace
dimensions. The framing headers may not rest directly on
top of the fi rebox.
The fi replace may be installed directly on a combustible
fl oor or a raised platform of an appropriate height. Do
not place fi replace on carpeting, vinyl, tile or other soft
fl oor coverings. It may, however, be placed on fl at wood,
plywood, particle board or other hard surfaces. Be sure
fi replace rests on a solid continuous fl oor or platform with
appropriate framing for support and so that no cold air can
enter from under the fi rebox. Y our vent-free fi replace must
be mounted to the fl oor or the fi replace hearth.
WARNING:
• Handle the gas log burner assembly by the
grate only. Do not pick the unit up by the
burners.
• Gloves are recommended when handling
ceramic fi ber logs to prevent skin irritation
from loose fi bers. 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:
• Installation/Operating instructions
• 33" unvented gas heater
• Canopy
• Volcanic rock and rock wool (traditional sets only)
• Stone and fi reglass kit (contemporary sets only)
• Two (2) anchoring screws
• Mounting screws for canopy
The millivolt controlled version of this heater is the only
style designed to be operated with optional devices for
ON/OFF functions. The following options may be used
with the millivolt controlled heater. These options are not
packaged with the log set.
• Hand held Remote with Receiver
• Wall switch with 15' wire.
• Hand held Thermostat Remote with Receiver
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 fl ammable objects are less than
42" from the front of the heater.
• In high traffi c areas.
• In windy or drafty areas.
WHAT YOU WILL NEED FOR INSTALLATION
You must have the following items available before proceeding with installation…
• External regulator (for propane / L.P.G. and 1/2 lb.
Natural Gas systems only)
• Piping which complies with local codes
• Sediment trap
• Tee joint
• Pipe wrench or appropriate size crescent wrench
set
• Phillips head screwdriver
• Drill with 5/32" bit
• Surround
• Manual shutoff valve
• Pipe sealant approved for use with liquid propane
(resistant to sulfur compounds)
Accessories required to fi nish the installation:
One of two surrounds:
• VFICFSS Black small surround 33"H x 43"W
• VFICFSL Black large surround 36"H x 50"W
One of three fi rebox liners:
• FBVFIC(M/LR) Firebrick
• BLPVFIC Black porcelain panels
• BMGVFIC Black Magic glass panels
20307670
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.
7
VFI33 Vent Free Gas Fireplace System
WARNING: The dimensions shown in
Figures 4 and 5 and defi ned in the fi replace
manufacturer's instructions are minimum
clearances to maintain when 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 fi re hazard.
NOTE: Clearances are necessary to combustible surfaces
only. No clearance is necessary for noncombustible surface.
Sidewall clearances: The clearance from the inside of the
appliance to any combustible adjacent wall should no be
less than 9". Figure 4
Ceiling clearance: The ceiling must be at least 42" from
the top of the fi rebox opening. Figure 4
Back wall clearance: The appliance can be placed against
the combustible back wall.
Floor clearance: The fi replace may not be installed onto
any combustible fl ooring material, such as carpeting, vinyl
or tile without the hearth or a minimum 22 GA (0.030") metal
or a minimum 1/2" wooden base covering the entire width
and depth of the base.
Mantel clearances: The canopy supplied with the unit
must be installed. If a combustible mantel is installed. It
must meet the clearance requirements shown in Figure 7.
CLEARANCE and HEIGHT REQUIREMENTS
22
3/4
A
23 7/8
33"
B
Surround Sizes*
AB
Small 33" 43"
Large 36" 50"
*A surround is required to complete the installation.
Figure 5 Dimensions for Installing in Masonry Fireplace or UL
Listed Box
15 1/4
42"
Minimum
9"
Minimum
Figure 4 Sidewall and Ceiling Minimum Clearances
8
9"
Minimum
BEFORE INSTALLING THE FIREPLACE
INSERT
Have fi replace fl oor and chimney professionally cleaned to
remove ashes, soot, creosote or other obstructions. Close
and seal any fresh air vents or ash clean-out doors located
on fl oor or wall
FP2770
20307670
CLEARANCES
VFI33 Vent Free Gas Fireplace System
HEAT RESISTANT MATERIAL (MINIMUM
REQUIREMENTS) WITH NO WOODEN MANTEL
OR OTHER COMBUSTIBLE PROJECTION
Heat resistant material (minimum requirements) with
wooden mantel or other combustible projection:
To install the heater with a wooden mantel shelf or other
combustible projection above, fi rst measure the heat resis-
tant material shown in Figure 6.
No combustible
materials within 8"
of opening.
Hood
Grate
Figure 8 is an example of an unsafe mantel installation.
The mantel projects 4" at 8" above the opening, exceeding the maximum acceptable distance of 21⁄2". The mantel
also projects 8" at 10" above the opening, exceeding the
maximum acceptable distance of 6".
If your mantel profi le is unsafe, you may either:
• Raise the mantel to an acceptable height or,
• Remove the mantel.
8"
6"
1
2
/2"
4"
No combustible
materials within 8"
of opening.
10"
8"
Figure 6 Measure Heat Resistant Material for Mantel
12"
10"
8"
6"
256O”
12"
10"
8"
Hood
Figure 8
26"
14"
Example: A mantel may project from the wall a maximum of
21⁄2" at minimum of 8" above the opening, and a maximum of
12" at a minimum of 26" above the opening.
Figure 7 Minimum Mantel Clearances
20307670
9
VFI33 Vent Free Gas Fireplace System
CLEARANCES and INSTALLATION
The gas log heater must be installed at least 5" above
any combustible fl ooring material, such as carpeting or
tile, which is closer than 14" to the base of the fi replace.
Figure 8
Combustible
5"
Noncombustible
Material
Figure 9 Minimum Clearance above Combustible Flooring
1”
Material
INSTALL CANOPY
1. Remove the fi replace screen as described in the previ-
ous section.
2. Align canopy with the holes in the top frame assembly.
Figure 10
3. Install the three (3) screws (in owner’s manual packaging) which attach the canopy to the top frame assembly .
Figure 10
4. Tighten all screws. Make sure the canopy is level and
secure. Install the fi replace screen.
Figure 11 Install Canopy
WARNING: Do not operate the unit without
the screen frame panel and canopy installed.
REMOVE SCREEN
Remove fi replace screen by pushing screen frame panel
up and out. Figure 9
NOTE: Fireplace screen must be removed to access log
box and to install canopy.
Figure 10 Remove Fireplace Screen
10
20307670
INSTALLATION
VFI33 Vent Free Gas Fireplace System
SECURE HEATER TO FLOOR
NOTE: Clearance requirements as detailed in “Clearances
and Height Requirements” section of this manual must be
met before securing heater in place.
To prevent movement, the heater must be secured to the
fl oor or hearth.
1. To remove the grate and base assembly, take out two
screws as shown in Figures 12 and 13.
2. Lift grate and base assembly out of the fi rebox.
3
3. Secure the fi rebox with two anchoring screws (
⁄16" x 11⁄2"
length) supplied with the fi replace system. Figure 14
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.
Figure 12 Remove Grate and Base Assembly (VFI33L models)
Figure 14 Secure Firebox to Floor or Hearth
20307670
Figure 13 Remove Base Assembly (VFI33C models)
11
VFI33 Vent Free Gas Fireplace System
CONNECT GAS LINE
CONNECTING THE GAS LINE
NOTICE: A qualifi ed 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 sulfi de 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 fl 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 13
To Fireplace
Pipe Coupling
WARNING: Connecting directly to an
unregulated propane/LPG tank can
cause an explosion
To reach factory installed fl ex line, go through access door
on right or left side of fi rebox.
Access Door
for Gas Line
Stainless Flex Line
Cord Protector
Manual Gas Shutoff
(Recommended Outlet
Positioned Vertical)
Pipe
Stainless
Flexible Tube
Manual Shutoff
Valve
Figure 15 Gas Connection
Locations Pressure
Tapping Point Installation
Gas Supply
Inlet
IMPORTANT: Loosen the pipe adapter on the fl 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.
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.
Figure 16 Access Holes
The stainless fl ex line is on the right side facing the fi re-
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 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 fi nd valve
and regulator referred to below. Figure 16
12
20307670
GAS PRESSURE — MILLIVOLT
CHECKING GAS PRESSURE:
MILLIVOLT CONTROL
Figure 17
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 fi rmly to re-seal. Do not over torque. Check for gas
leaks.
Test Port
"OUT"
VFI33 Vent Free Gas Fireplace System
Figure 17 Pressure Test Point Location Millivolt Control
FP2781
20307670
13
VFI33 Vent Free Gas Fireplace System
ELECTRICAL WIRING — MILLIVOLT
ODS Pilot
On/Off
Switch
Field Installed Optional
Wall Switch or
Remote Receiver
On/Off
Switch
ODS
Pilot
Valve
Spade
Terminal
TH = 3
TP = 1
TP/TH = 2
Switch
Figure 18 Wiring Diagram
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 OPERA TE.
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 thermostat installations.
NOTE: Thermostats and switches must be suitable for
millivolt operation.
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.
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20307670
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