Vermont Castings VWF18STN User manual

Vented Gas Log Set
Models: VWF18STN,
VWF24STN
WARNINGS
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
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.
• 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 qualied installer, service agency or
the gas supplier.
27D8851 1/13 Rev. 5
This gas log set is to be installed only in a
solid-fuel burning replace with a working ue
constructed of noncombustible material.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future refer-
ence.
Installation and Operating
Instructions
278851
VWFST cover

27D8851
2
VWFST Series Vented Gas Log Set CONTENTS
Important Safety Information ....................................3
Product Specications ...............................................4
Gas Specications .................................................4
Gas Pressures .......................................................4
Minimum Hearth Dimensions .................................4
Getting Started ............................................................5
Burner - Grate Assembly 18", 24" ..........................5
18", 24" Logs ..........................................................5
Items for Installation ...............................................5
Minimum Free Opening Area of
Chimney Damper for Venting .................................5
Minimum Chimney Height and Flue Opening ........5
Placement in a Fireplace with a Restrictive Barrier 6
Installation ...................................................................7
Damper Stop Installation ........................................7
Before Installing the Appliance ...............................7
Installation for Gas Valve Kits ...................................8
Supplemental Instructions:
SPK-NGA/SPK-LPA ...............................................8
MANVK ................................................................10
MVVKLPA .............................................................10
MVVKNA ..............................................................10
CVTHL-NG ........................................................... 11
CVTHL-LP ............................................................ 11
Wiring - Millivolt .........................................................12
Check System Operation ..........................................12
Connect the Gas .......................................................13
Log Placement ..........................................................14
Filling the Burner Pan ...........................................14
Placement of Glowing Embers (Rock Wool) ........14
Placement of Decorative Volcanic Rock ..............14
VWF18ST & VWF24ST Log Placement ...............14
Operating Instructions ..............................................16
SPK and CVTHL kits ............................................16
For Your Safety Read Before Lighting ..................16
Manual Control (SPK) ..........................................16
Hi/Lo control (CVTHL) ..........................................16
Millivolt Control ....................................................17
To Turn Off Gas to Heater ....................................17
Operating Instructions for MANVK Kits ..................18
For Your Safety Read Before Lighting ..................18
Manual Control Lighting Instructions ....................18
To Turn Off Gas to Heater ....................................18
Flame Appearance .....................................................19
Check Burner Flames ..........................................19
Pilot Flame Appearance .......................................19
Fireplace Draft Test ..................................................20
Remote Control Receiver Replacement .................21
Cleaning and Servicing ............................................21
Replacement Parts ....................................................22
Burner Assembly ..................................................22
VWFST Logs ........................................................23
Massachusetts Requirements ..................................26
Warranty .....................................................................27
Thank you and congratulations on your purchase of a Vermont Castings Group Log Set.
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.

3
27D8851
VWFST Series Vented Gas Log Set
IMPORTANT SAFETY INFORMATION
1. The installation, combustion and ventilation air must con-
form with local codes or, in the absence of local codes,
with the National Fuel Gas Code, ANSI Z223.1.
2. Installation and repair should be done by a qualied
service person. Vermont Castings Group Vented Gas
Logs must be installed only in a masonry or a UL 127
solid-fuel replace with minimum venting requirements,
see installation section.
3. To prevent malfunction, gas log set and ue should
be cleaned at least annually by a professional service
person. More frequent cleaning may be required due
to excessive lint from carpeting, etc. It is imperative
that control compartments, burners and circulating air
passageways be kept clean.
4. A damper clamp must be installed to provide the
minimum permanent vent opening to vent ue
products, Refer to installation instructions.
5. Never burn solid fuels in a replace where a gas log
set is installed.
6. 
 A replace screen must be
in place when the log set is burning. Provisions for
adequate combustion air must be provided. Adequate
combustion air usually results in all ames curling into
the replace away from screen and up the ue.
8. Keep room area clear and free from combustible
materials, gasoline and other ammable vapors and
liquids.
9. Children and adults should be alerted to the hazard
of high surface temperature and should stay away to
avoid burns or clothing ignition.
10. Young children should be carefully supervised when
they are in the same room with the gas log set in opera-
tion.
Installation of this vented gas log in the Commonwealth
of Massachusetts requires the damper be permanently
removed or welded in the full open position. In addition, a
naturally vented gas log may not be installed in a bedroom
or bathroom in the Commonwealth of Massachusetts. Flex
line installation must not exceed 36".
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 stove. 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.
IMPORTANT
Read these instructions carefully before
installing or trying to operate this vent-free
gas heater.
WARNING
This product must be installed by a licensed
plumber of gas tter when installed within
the Commonwealth of Massachusetts.
11. Do not place clothing or other ammable material near
the replace when the gas logs are in use.
12. Do not use this gas log set if any part has been under-
water. Immediately call a qualied service technician
to inspect the gas logs and replace any part of the
control system and any gas control which has been
under water.
13. The gas log set must be isolated from the gas supply
piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply
piping system at test pressures equal to or less than
1/2 psig (3.5kPa).
14. Secure gas log set to replace.
15. This log set will burn off the paint on the front grate
bar. NOTE: See cleaning section for refurbishing.
16. LP sets must be installed with SPK-LP or
MVVKLP kits.
17. FOR MASSACHUSETTS RESIDENTS ONLY:
WARNING
This appliance is for installation only in
a solid fuel burning replace (masonry
replace or manufactured replace)

27D8851
4
VWFST Series Vented Gas Log Set
*For SPK and CVTHL Kits, add 4" to A and B
Dimensions.
For MVVK Kit, add 8" to A and B Dimensions.
Minimum Hearth Dimensions*
SAFETY INFORMATION & PRODUCT SPECIFICATIONS
Nous recommandons que nos
appareils de chauffage au gaz
soient installés et entretenus par
des professionnels qui ont été
accrédités aux È.U. par le National
Fireplace Institute ® (NFI) comme
étant des spécialistes du NFI en
matièred’appareils de chauffage
au gaz.
WARNING
Never connect unit to private (non-
utility) gas wells. This gas is commonly
known as wellhead gas.
Model A B C D
VWF18STN 20" 20" 18" 16"
VWF24STN 26" 26" 18" 16"


GAS PRESSURES
Natural Propane (LP)
Max. Gas Inlet Pressure 10.0” w.c. 13.0” w.c.
Min. Gas Inlet Pressure 4.0" w.c. 10.0" w.c.
GAS SPECIFICATIONS
Nominal
Model Fuel Control BTU/h
VWF18STN Natural Manual 80,000
VWF24STN Natural Manual 90,000
NOTE: Actual performance, ame height, Btu/hr will vary
with specic installation, gas pressure, shutoff valve po-
sition (fully open), valve type and rebox draft conditions.
MINIMUM HEARTH DIMENSIONS
Each gas log set requires:
• a minimum for the front opening
• a minimum height
• a minimum depth
IMPORTANT: It is critical that the minimum width and depth
are met. Figure 1
C
LG1047
minimum hearth dims
D
B
A

5
27D8851
VWFST Series Vented Gas Log Set
Chimney Height Flue Opening
6' 64 sq in
8' 64 sq in
10' 64 sq in
15' 51 sq in
20' 51 sq in
30' 51 sq in
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:
BURNER - GRATE ASSEMBLY 18", 24"
• Burner and Grate Weldment Assembly
• Lava Rocks (x2)
• Reducer
• Glowing Embers (Rock Wool)
• Damper Clamp
• Injector
• Installation /Operating Instructions
• Vermiculite
• 3/8" Aluminum Tube with 3/8" 90° Elbow, 1/2" to
3/8" tube tting
• Shield Plate
18" OR 24" CERAMIC FIBER OR REFRACTORY
LOGS
• Individual Logs
• Installation Instructions
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.
ITEMS REQUIRED FOR INSTALLATION
Ensure that the following items are available before pro-
ceeding with installation:
• External regulator (for propane/L.P.G. only)
• Shutoff valve
• Pipe wrench
• Piping which complies with local codes
• Drill with masonry bit (for mounting to the oor)
• Pipe sealant approved for use with propane/L.P.G.
(Resistant to sulfur compounds)
MINIMUM FREE OPENING AREA OF CHIM-
NEY DAMPER FOR VENTING
MINIMUM CHIMNEY HEIGHT AND FLUE
OPENING
WARNING
• Handle the gas log burner assembly by
the grate only. Do not pick the unit up by
the burner.
• Gloves are recommended when handling
ceramic fiber logs to prevent skin
irritation from loose fibers. Logs are
fragile — handle with care.
WARNING
The fireplace and gas logs function as
a system. If the replace is not drafting
properly and spilling into the room (check
with a match or a smoke stick), reposition
the damper clamp until the positive draft is
obtained by opening the damper. If negative
pressure in home prevents having a positive
draft, contact your dealer for assistance.

27D8851
6
VWFST Series Vented Gas Log Set
X
Lg1048
in an enclosure
PLACEMENT IN A FIREPLACE WITH A RESTRICTIVE BARRIER
IMPORTANT INFORMATION FOR THE INSTALLATION OF THIS GAS LOG
SET
The following are guidelines for placing a VWF log set with SPK, MVVK, or CVTHL kit in a replace
that has a restrictive barrier along the bottom front opening of the replace. Some examples of bar-
riers are glass/screen door frames and sunken/recessed replaces.
Glass door frames with
adjustable louvers should
have the lovers fully open
while the unit is in operation.
Height of restrictive barrier caused
by glass door frames, recessed
replaces, etc. from the base or
bottom surface of the unit. (See Table).
The log set should be placed against
or as near as possible to the rear wall
of the replace/rebox.
Depth of replace/rebox.
(Refer to Table).

NOTE: Noncombustible material such as refractory brick
may be used to line the oor of the replace in order to
raise the height of the gas log set in relation to a restrictive
barrier.
Height of Restriction (X) Minimum Depth of Fireplace/Firebox
No Restriction 18"
0 to 1Z\x" 20"
Greater than 1Z\x" to 3" 21"
Greater than 3" Any barrier greater than three inches (3") placed in front of the
gas log set is not recommended by the manufacturer
WARNING
Barriers such as the bottom of a glass door
frame placed in front of a gas log set can
change the air ow characteristics of the
replace which in turn can cause the unit
to overheat and malfunction. Any deviation
from the installation guidelines on this sheet
will potentially void the warranty.
CAUTION
If the replace has a restrictive barrier and
is equipped with a remote receiver, it must
be placed outside. 


7
27D8851
VWFST Series Vented Gas Log Set
INSTALLATION
INSTALL AND OPERATE THE APPLIANCE
AS DIRECTED IN THIS MANUAL.
DAMPER STOP INSTALLATION
A damper stop must be provided with the unit. The damper
stop must be installed as shown in Figure 3 to prevent full
closure of the replace damper blade and provide a mini-
mum ue opening, according to the table on Page 5.
Should the clamp not t, or provide the required permanent
opening from the table, have the damper cut to provide
a minimum permanent opening or install a permanent
stop.
FOR MASSACHUSETTS RESIDENTS ONLY: Installa-
tion of this vented gas log in the Commonwealth of Mas-
sachusetts requires the damper be permanently removed
or welded in the full open position. In addition, a naturally
vented gas log may not be installed in a bedroom or bath-
room in the Commonwealth of Massachusetts.
FP2727
damper
Damper Stop
Damper
FP2727


In compliance with ANSI Z21.60 • CSA2.26 and National
Fuel Gas Code, Section 6.
BEFORE INSTALLING THE APPLIANCE
• Turn off gas supply to replace or rebox.
• Clean replace oor and chimney before installing log
set. Seal any ash. Clean out doors to protect the unit
from down drafts.
ASSEMBLY PROCEDURE
1. Place grate/burner assembly into rebox with pipe
connection facng gas pipe located on one side of the
unit.
2. Drill four (4) 5/32" diameter holes approximately 1Z\x"
deep.
3. Anchor grate burner to the oor using the screws pro-
vided.
Proper installation of the grate is essential to prevent
any movement of the gas logs and controls during
operation.
LG1049
secure to floor
Screws
Injector
(Natural Gas
Only)
LG1049



27D8851
8
VWFST Series Vented Gas Log Set
LG1051
SPK lp valve connection
LG1050
SPK valve connection
The Safety Pilot Kit attaches to the burner pan as shown above.
Use soapy water when checking all ttings for leaks.
SUPPLEMENTAL INSTRUCTIONS FOR SPK-
NGA/SPK-LPA
Adjust pilot ame to cover
thermocouple
INSTALLATION FOR GAS VALVE KITS
SPK-NGA Kit Includes
Valve
Pilot (Congured for NG)
Pipe Nipple
Heat Shield
Knob Extenders
SPK-LPA Kit Includes
Valve
Pilot (Congured for LP)
Air Mixing Nut
Brass Nut
Heat Shield
Knob Extenders
WARNING
LP sets must be installed with a SPK or
MVVKLP Kit which includes the air mixing
nut and vermiculite. The natural gas orice
must be removed.
Natural Gas
Injector
Reducer
Burner Fitting
Pipe Nipple
Gas Control
Valve
LG1050



Burner Fitting
Brass Nut
LP Air-Mixing
Injector
Gas Control
Valve
LG1151




9
27D8851
VWFST Series Vented Gas Log Set
INSTALLATION FOR GAS VALVE KITS
LG1052
install pilot
Screw

 LG1052
LG1053
install heat shield
Heat Shield
Gas Control
Valve
Knob Extensions
Control Knob
LG1053



27D8851
10
VWFST Series Vented Gas Log Set
LG1056
MVVKNA
LG1055
MVVKLPA
LG1054
MANVK
SUPPLEMENTAL INSTRUCTIONS FOR MANVK
MANVK Kit Includes
Valve
Knob Extenders
Control Knob
SUPPLEMENTAL INSTRUCTIONS
FOR MVVKLPA
MVVKLPA Kit
Includes
Valve Assembly
Pilot
Heat Shield
Air Mixing Injector
Vermiculite
Brass Nut
SUPPLEMENTAL INSTRUCTIONS
FOR MVVKNA
INSTALLATION FOR GAS VALVE KITS
WARNING
The MANVK kit is for Natural Gas Only
Injector
Reducer
Valve
Knob Extenders
Control
Knob
LG1054


LP Air-Mixing
Injector
Brass Nut
Flex
Hose
90° Cast
Iron Elbow
Burner
Fitting
Gas Control
Valve
Heat Shield
LG1055


Flex Hose
Reducer
Flex
Connector
Gas Control
Valve
Burner
Fitting
Injector
Heat Shield
90° Cast
Iron Elbow FP2735


MVVKNA Kit
Includes
Valve Assembly
Pilot
Heat Shield
Pipe Nipple

11
27D8851
VWFST Series Vented Gas Log Set
LG1058
CVTHLLP
LG1057
CVTHLNG
INSTALLATION FOR GAS VALVE KITS
SUPPLEMENTAL INSTRUCTIONS FOR CVTHL-NG
CVTHL-NG Kit Includes
Valve
Pilot for NG
Pipe Nipple
Knob Extender
Heat Shield
Self Tapping Screws
Pilot Bracket
Natural Gas
Injector
Reducer
Gas Control
Valve
Pipe Nipple
Burner
Fitting



Heat Shield
Control Knob
LG1057



CVTHL-LP Kit Includes
Valve
Pilot for LP
Brass Nut
Vermiculite
LP Air-Mixing Injector
Knob Extender
Heat Shield
Self Tapping Screws
Pilot Bracket
Gas Control
Valve
Heat Shield
Control
Knob
LP Air-
Mixing
Injector
Brass Nut
LG1058

27D8851
12
VWFST Series Vented Gas Log Set WIRING -MILLIVOLT
The Millivolt (thermopile) is a self powered combination gas
control that does not require 110VAC to operate. Refer to
Figure 14 and installation instructions provided with optional
wall switch or remote control for wiring instructions. A maxi-
mum length of 15 feet of 18 awg two conductor wire is to
be used for wall switch. Note switches must be suitable
for Millivolt operation. The optional wall switch and remote
receiver must be mounted outside the rebox.
CHECK SYSTEM OPERATION
The Millivolt system and individual components may be
checked with a Millivolt meter having a 0-1000MV range.
Conduct each check shown in chart below by connection
meter test leads to terminals as indicated.
A. COMPLETE MILLIVOLT SYSTEM CHECK
("A" READING - CONTACTS CLOSED - CONTROL
KNOB "ON" - MAIN BURNER SHOULD BE COME
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 as follows:
WARNING
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation. Verify
proper operation after servicing
WARNING
Do not connect to 110 Volt supply
FP2738
wiring diagram
Pilot
THTP
TP
TH
Millivolt
Valve
FP2738


Optional Wall
Switch or Remote
Receiver
WARNING
Keep wiring away from heat source and
hot surfaces.
Connect
Meter Meter
Check To Test Leads to Reading
Test Terminals Should Be
A Complete TH & TH/TP Min. 100 mV
System
B Thermopile TP & THTP Min. 325 mV
Output
B. THERMOPILE OUTPUT READING CHECK
(“B” READING - CONTACTS OPEN - MAIN
BURNER OFF)
a. 325 Millivolts minimum. If the minimum Millivolt read-
ing is not obtainable, readjust pilot for maximum Mil-
livolt output. If Millivolt reading is still below minimum
specied, replace thermopile.

13
27D8851
VWFST Series Vented Gas Log Set
CONNECT THE GAS
NOTICE
NOTICE: A qualied gas appliance installer
must connect the appliance to the gas
supply. Consult all local codes before instal-
lation.
CAUTION
Use new black iron pipe, steel pipe, copper
tubing, or internally tinned copper tubing.
Copper or internally tinned copper tubing
can only according to the National Fuel
Gas Code, section 2.6.3, providing gas
meets sulde limits, and where permitted
by local codes. Gas piping system must be
sized to provide minimum inlet pressure
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. 
WARNING
Connecting directly to an unregulated propane/
LPG tank can cause an explosion.
IMPORTANT:Hold appliance rmly with a wrench to pre-
vent movement when connecting to inlet piping.
Always use an external regulator for all propane/LPG
gas logs only, to reduce the supply tank pressure to a
maximum of 13" w.c.
FP2739
gas connection
Pipe Coupling
To Gas Log Set or
to Gas Valve Shutoff
Valve
Gas Supply Inlet


Pipe
Locations that the Pressure
Tapping Point May be Installed

27D8851
14
VWFST Series Vented Gas Log Set LOG PLACEMENT
FILLING THE BURNER PAN
Fill the burner pan with vermiculite to the center and sloped
to the front/back of the burner pan. Excess vermiculite can
spill forward or to the sides of the burner pan. Do not overll
the propane model. Do not cover the pilot with vermiculite
or rock wool (embers).
PLACEMENT OF GLOWING EMBERS
(ROCK WOOL)
The Wildre ame appearance can vary due to differences
in draft and replace congurations and ember placement.
After installing the four (4) bottom logs, cover the entire top
surface of the vermiculite in the burner pan with the rock
wool supplied with unit. Tear the rock wool into pieces ap-
proximately 1/2" in size (roughly the size of a nickel) and
cover the burner evenly. Do not use more rock wool than
the amount supplied with the unit. To enhance the ap-
pearance of the Wildre ame, it is recommended to form
a mound of rock wool in the center of the burner, 2" to 3"
high, visible through the logs.
VWFST18ST and VWF24ST LOG PLACE-
MENT
1. Place bottom left log (#1) and bottom right log (#2) on
front of grate. Figure 16
LG1059
LG1058
VWFST front logs
Bottom Left Front
Log #1
Bottom Right Front
Log #2

LG1060
VWFST front logs 2
Bottom Left Front
Log #1
Bottom Right Front
Log #2
LG1060
LG1059

2. Place bottom left front log (#1) behind bot-
tom right front log (#2) on back of grate.
Figure 17
3. Place bottom right front log (#2) behind
bottom left front log (#1) on back of grate.
Figure 17
PLACEMENT OF DECORATIVE VOLCANIC
ROCK
Sprinkle volcanic around the burner.
DO NOT SPRINKLE ON BURNERS, EMBER BED, PILOT
OR LOGS.
IMPORTANT: Do not handle logs with your bare hands!
Always wear gloves to prevent skin irritation from
ceramic bers. After handling logs, wash your hands
gently with soap and water to remove any traces of
bers.

15
27D8851
VWFST Series Vented Gas Log Set
LOG PLACEMENT
4. Place a left/right curved log (#3)
on top of front and back bottom left
logs. Place second left/right curved
log (#3) on top of front and back
bottom right logs. Figure 18
LG1061
VWFST curved logs
Left/Right
Curved Log #3
Left/Right Curved
Log #3
LG1061

LG1062
VWFST charred logs
Left Right Split
Charred Log #4
Left Right Split
Charred Log #4
LG1062

5. Place a left/right split charred
log (#4) on top of front and back
bottom left logs. Place second
left/right split charred log (#4) on
top of front and back bottom right
logs. Figure 19
LG1063
VWFST top log
Top Log #5

6. Place top log (#5) on top of left/right
charred logs. Figure 20

27D8851
16
VWFST Series Vented Gas Log Set OPERATING INSTRUCTIONS FOR SPK AND CVTHL KITS
SAFETY INSTRUCTION FOR MANUAL CONTROL (SPK) AND HI/LO CONTROL (CVTHL)
1. STOP! Read the safety information label.
2. Make sure the manual shutoff valve is fully
open.
3. Push in gas control knob slightly and turn
clockwise to “OFF.”


4. 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
label. If you don’t smell gas, go to next step.
5. Find pilot — follow metal tube from gas con-
trol.
6. From “OFF” position, push i n
gas control knob slightly
and turn counterclockwise
to “PILOT.” Push i n
control knob for 5 seconds.
FOR YOUR SAFETY READ BEFORE LIGHTING
MANUAL CONTROL LIGHTING INSTRUCTIONS
A. 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.
B. 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
TO TURN OFF GAS TO HEATER
WARNING
If you do not follow these instructions
exactly, a fire or explosion may result
causing property damage, personal injury
or loss of life.

LG905
pilot knob

1. Push in gas control knob slightly and turn clock-
wise to OFF position. Do not force.
it. Call a qualied service technician. Force or
attempted repair may result in a re or explo-
sion.
C. Do not use this appliance if any part of it has
been under water. Immediately call a qualied
service technician to inspect the appliance and
to replace any part of the control system and
any gas control that has been under water.
7. With the control knob pushed in, immediately
light the pilot with a match. Continue to hold the
control knob in for about one (1) minute after
the pilot is lit. Release knob and it will pop back
up. Pilot should remain lit. If it goes out, repeat
steps 5 through 9.
• If knob does not pop up when released, stop
and immediately call your service technician
or gas supplier.
• If the pilot will not stay lit
after several tries, turn the
gas control knob to off and
call your service technician
or gas supplier.
8. Turn gas control knob counter-
clockwise to “ON.”

17
27D8851
VWFST Series Vented Gas Log Set
OPERATING INSTRUCTIONS FOR MVVK KITS
1. Turn control knob clockwise to OFF posi-
tion to completely shut off the heater.
MILLIVOLT CONTROL LIGHTING INSTRUCTIONS


NOTICE
The Millivolt control does not come preassembled with an on/off switch so that
it may be customized for the specic application with a wall switch, remote, etc.
A switch/remote must be connected to enable the burner to light.
ON OFF
P
I
I
L
O
T
TO TURN OFF GAS TO HEATER
1. STOP! Read the safety information label.
2. Make sure the manual shutoff valve is fully
open.
3. Turn gas control knob clockwise to the
"OFF" position, and turn ON/OFF switch to
"OFF" position.
4. Wait ve (5) minutes to clear out any gas. Then
smell for gas, including near the oor. If you
smell gas, STOP!
5. From "OFF" position, turn the gas control knob
counterclockwise to "PILOT" position.
Push in control knob for ve (5) seconds.
6. With the control knob pushed in, light pilot with
match.
7. Continue pushing in the control knob 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.
8. Turn gas control knob counterclockwise
to the "ON" position.
9. After the pilot has been lit for one (1) minute,
the burners can be turned on. Turn the ON/OFF
switch to "ON" position.
10. If the gas logs will not operate, follow the instruc-
tions To Turn Off Gas to Heater and call your
service technician or gas supplier.
2. If applicable: Turn ON/OFF switch to OFF posi-
tion.

27D8851
18
VWFST Series Vented Gas Log Set OPERATING INSTRUCTIONS FOR MANVK KIT
SAFETY INSTRUCTION FOR MANUAL CONTROL WITHOUT PILOT
A. 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.
1. STOP! Read the safety information label.
2. WARNING: BE SURE THE CHIMNEY
DAMPER IF FULLY OPEN.
3. Make sure the manual shutoff valve is fully
open, and the gas control valve is fully off.
4. 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 label. If you don't smell gas, go to
next step.
MANUAL CONTROL LIGHTING INSTRUCTIONS
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
If you do not follow these instructions
exactly, a fire or explosion may result
causing property damage, personal injury
or loss of life.
B. 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 qualied service technician. Force or
attempted repair may result in a re or explo-
sion.
C. Do not use this appliance if any part of it has
been under water. Immediately call a qualied
service technician to inspect the appliance and
to replace any part of the control system and
any gas control that has been under water.
1. Turn the manual valve clockwise to “OFF.”
5. Place a burning match on the surface of the
burner embers (granules). Do not hold the match
in hand. Slowly turn the manual valve counter-
clockwise to “ON”.
6. If the burner does not light before the match goes
out, immediately turn the manual valve clockwise
to “OFF”
TO TURN OFF GAS TO HEATER

19
27D8851
VWFST Series Vented Gas Log Set
LG1064
VWFST log flames
FLAME APPEARANCE
CHECKING BURNER FLAMES
Flame should be yellow and extend vertically
(not curling toward replace screen).
PILOT FLAME APPEARANCE
The pilot ame must always be present when appliance is
operating. It should just touch the top of the thermocouple/
thermopile tip.


Ember bed should have
a yellow/orange glow
During manufacturing, fabricating, and shipping, various
components of this appliance are treated with certain oils,
lms, or bonding agents. These chemicals are not harm-
ful, but may produce annoying smoke and smells as they
burn off the rst time the appliance is used. Operate the
appliance 2 to 3 hours at the highest setting to burn off all
the oils, lms, etc. Never use this appliance with glassed
doors closed. This could cause the pilot to go out and
severe sooting outside the replace. Always operate this
appliance with the replace screens in place.
LG1064


Thermocouple/
Thermopile Tip
LG910
SPK Pilot flame
LG910

27D8851
20
VWFST Series Vented Gas Log Set FIREPLACE DRAFT TEST


It is critical to verify that your chimney is drafting properly
because the replace and gas logs function as a system.
Although Vermont Castings Group goes to great
lengths to design vented gas log sets that minimize
sooting, all vented log sets will soot over time. Sooting
normally appears as areas of black powder-like sub-
stance on the logs. It is important to periodically clean
and inspect the logs per the cleaning and servicing.
FIREPLACE DRAFT TEST METHOD
To determine if your replace is drafting properly, turn
the log set on. After log set has been burning for about
10 minutes, place a match or smoke stick along the top
and sides of the replace opening. If the ame or smoke
is not pulled into the replace, then 
. At this point, the damper stop should
be adjusted so that the damper opening is increased. If
the problem remains after the open area of the damper
is increased, then the replace system should be profes-
sionally inspected to determine if your rebox/chimney is
venting properly.
WARNING
Fireplace systems that do not draft properly
can increase the amount of soot produced
by normal operation of the log set and,
in extreme cases, can cause soot to be
deposited within the room. This effect can
be a sign of a blocked chimney, a faulty vent
system or the result of negative pressure
within the home. The dealer should be able
to diagnose if a problem exists and be able
to provide a solution to improve the venting
of the replace.