Monessen Hearth VWF18 User manual

This gas log set is to be installed
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READ AND SAVE THESE INSTRUCTIONS
VENTED GAS LOG SET
INSTALLATION AND OPERATING INSTRUCTIONS
$SSURYHGWR$16,=
MODELS: VWF18 VWF24 VWF30 VWF36
Natural Gas or Propane/LPG Control Type:
Manual, Milli-Volt or Hi/Lo Remote
WARNINGS
If the information in this manual is not followed exactly,
D¿UHRUH[SORVLRQPD\UHVXOWFDXVLQJSURSHUW\GDPDJH
personal injury or loss of life.
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vapors and liquids in the vicinity of this or any
other appliance.
– WHAT TO DO IF YOU SMELL GAS
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• Do not touch any electrical switch; do not use any
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instructions.
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supplier.

 27D8520
CONTENTS
Important Safety Information ..........................3
3URGXFW6SHFL¿FDWLRQV.....................................4
*HWWLQJ6WDUWHG.................................................5
Placement in a Fireplace with a Restrictive
Barrier ..........................................................6
Installation .........................................................7
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/RJ3ODFHPHQW................................................12
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2SHUDWLQJ,QVWUXFWLRQV....................................42
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Flame Appearance...........................................44
Fireplace Draft Test.........................................45
Remote Control Receiver Replacement........46
&OHDQLQJDQG6HUYLFLQJ..................................46
Replacement Parts Lists ................................47
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Warranty...........................................Back Cover

27D8520 
INSTALLER
Please leave these instructions with the owner. OWNER
Please retain these instructions for future reference .
IMPORTANT SAFETY INFORMATION
1. The installation, combustion and ventilation air must
conform with local codes or, in the absence of local
codes, with the National Fuel Gas Code, ANSI Z223.1,
or the CAN/CGA-B149 Installation code (series). This
unit complies with ANSI Z21.60-2000 decorative gas
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vice person. MonessenVented GasLogs must beinstalled
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minimum venting requirements, see installation sec-
tion.
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cleaned at least annually by a professional service person.
More frequent cleaning may be required due to exces-
sive lint from carpeting, etc. It is imperative that control
compartments, burners and circulating air passageways
be kept clean.
4. Adamperclampmust beinstalled toprovidethe mini-
PXPSHUPDQHQWYHQWRSHQLQJWRYHQWÁXHSURGXFWV
Refer to installation instructions.
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is installed.
6. This appliance must NOT be used with glass
doors in the closed position. $ ÀUHSODFH VFUHHQ
must be in place when the log set is burning. Provisions
for adequate combustion air must be provided.Adequate
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8. Keep room area clear and free from combustible materi-
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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 operation.
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WKHÀUHSODFHZKHQWKHJDVORJVDUHLQXVH
12. Do not use thisgas logset if anypart has beenunderwater.
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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).
 6HFXUHJDVORJVHWWRÀUHSODFH
15. This log set will burn off the paint on the front grate bar.
Note: See cleaning section for refurbishing.
16FOR MASSACHUSETTS RESIDENTS ONLY:
IMPORTANT
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• Any cKDQJHWRWKLVDSSOLDQFHRULWVFRQWUROVFDQEHGDQJHURXV
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WARNING
This applianceis forinstallation only in
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¿UHSODFHRUPDQXIDFWXUHG¿UHSODFH
WARNING
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OLFHQVHG SOXPEHU RI JDV ¿WWHU ZKHQ
installed within the Commonwealth of
Massachusetts.
WARNING
Installation of this vented gas log in the Commonwealth
of Massachusetts requires the damper be permanently
removed or weldedin thefull openposition. Inaddition, a
naturally vented gaslogmay notbeinstalled ina bedroom
or bathroom in the Commonwealth of Massachusetts.
Flex line installation must not exceed 36".

 27D8520
The manifold pressure for propane is 10" WC.
The manifold pressure for natural is 4"WC.
The minimum inlet gas supply pressure is 4" WC for natural and 10" WC for LP.
The maximum inlet gas supply pressure for this log set is 10" WC for natural and 13" WC for LP.
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Figure 1 - Minimum Hearth Dimensions
MINIMUM HEARTH DIMENSIONS
PRODUCT SPECIFICATIONS
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SAFETY INFORMATION
Never connect unit to private
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WARNING
MANUAL CONTROL
Model A B C
VWF18   
VWF24   
VWF30   
VWF36   
MILLI-VOLT & HI/LO CONTROL
Model A B C
VWF18  / 
VWF24  / 
VWF30  / 
VWF36  / 

27D8520 
CHIMNEY HEIGHT FLUE OPENING
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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, 30, 36"
• Burner and Grate Weldment Assembly • Lava Rocks (x2) • Extenders with Knob (Manual Control Only)
• Glowing Embers (Rock Wool) • Damper Clamp • Vermiculite
• Installation /Operating Instructions • 3/8" Aluminum tube with 3/8" 90° elbow, 1/2"to3/8"WXEHÀWWLQJ
• Control Cover • Shield Plate
18", 24", 30" OR 36" 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 proceeding with installation:
• External regulator (for propane/L.P.G. only) • Shutoff valve
• Piping which complies with local codes • Pipe wrench
• Pipe sealant approved for use with propane/L.P.G. (Resistant to sulfur compounds)
  'ULOOZLWKPDVRQU\ELWIRUPRXQWLQJWRWKHÁRRU
MINIMUM OPENING AREA OF CHIMNEY DAMPER FOR VENTING
MINIMUM CHIMNEY HEIGHT AND FLUE OPENING
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EXUQHU%XUQHUSDQLVDVHSDUDWHDVVHPEO\
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IURPORRVH¿EHUV/RJVDUHIUDJLOH²KDQGOHZLWKFDUH
CAUTION
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WARNING

 27D8520
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5(&200(1'('%<7+(0$18)$&785(5
PLACEMENT IN A FIREPLACE WITH A RESTRICTIVE BARRIER
IMPORTANT INFORMATION FOR THE INSTALLATION OF THIS GAS LOG SET
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*ODVVGRRUIUDPHV
with adjustable
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WKHORYHUV fully open
while the unit is in
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XQLW(Refer to Table).
The log set should be
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DVSRVVLEOHWRWKHUHDUZDOO
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(Refer toTable).
Figure 2
NOTE: Non combustible material such as
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height of the gas log set in relation to a
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;
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will potentially void the warranty.
WARNING
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and isequipped witha remote receiver,
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CAUTION

27D8520 7
Damper Stop
Damper
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FOR MASSACHUSETTS RESIDENTS ONLY
Installation of this ventedgas log set inthe Commonwealth
of Massachusetts requires the damper be permanently
removed or welded in the fully open position. In addition, a
naturally vented gas log may not be installed in a bedroom
or bathroom in the Commonwealth of Masasachusetts.
BEFORE INSTALLING THE APPLIANCE:
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unit from down drafts.
INSTALLATION
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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
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minimum permanent opening or install a permanent stop.
Figure 3 - Damper Stop Installation
In compliance with ANSI Z21.60•CGA2.26 and National Fuel Gas Code, Section 6.
ASSEMBLY PROCEDURE
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with the front pan facing forward.
2. Drill two (2) 5/32" diameter holes approxi-
mately 1 1/2" deep.
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the screws provided.
Proper installation of the grate is
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of the gas logs and controls during
operation.

827D8520
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WARNING
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NOTICE
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INSTALLATION
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INSTALLING VALVE COVER

27D8520 
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operation. Verify proper operationafter
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WARNING
Do not connect to 110 volt supply.
WARNING
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source and hot surfaces.
WARNING
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Figure 8 - Wiring Diagram
The Milli-Volt (thermopile) is a self powered combination gas control
thatdoes notrequire 110VAC tooperate. Refer toFigure 8and installa-
tion instructions provided with optional wall switch or remote control
for wiring instructions. A maximum length of 15 feet of 18awg two
conductor wire is to be used for wall switch. Note switches must be
suitable for millivolt operation. The optional wall switch and remote
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CHECKING SYSTEM OPERATION
The milli-volt 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 MILLI-VOLT SYSTEM CHECK
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6+28/'%(&20(21
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:
B. THERMOPILE OUTPUT READING CHECK
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a. 325 millivolts minimum. If the minimum millivolt reading is not obtainable, readjust pilot for maximum millivolt
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CONNECT
METER METER
CHECK TO LEADS TO READING
TEST TEST TERMINALS SHOULD BE
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 27D8520
CONNECTING THE GAS
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Figure 9 - Gas Connection
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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. High pressure natural gas systems require a regulator to reduce supply pressure to 10" W.C.
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NOTICE
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See Figure 9.
CAUTION
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tank can cause an explosion.
WARNING

27D8520 
Figure 10 - Pressure Test Point Location
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MANUAL AND HI/LO CONTROL (Figure 10)
The pressure regulator is preset and locked to discourage
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the correct part from the parts list in this manual.
Remove 1/8" NPT plug, located on side of regulator body.
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pressure reading, re-install test plug. which should be
checked at the pressure test point. Check for gas leaks.
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Figure 11 - Pressure Test Point Location
CONNECTING THE GAS
The gas log set gas inlet connection is 3/8" NPT at the regulator, inlet on the right side facing the gas log. If a left
side connection is required, the connecting pipe may be led under the rear of the gas logs or behind the grate for
connection to the inlet.
Test all gas joints from the gas meter to the appliance regulator 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.
MILLI-VOLT CONTROL (Figure 11)
The valve regulatorcontrols theburnerpressure whichshould
be checked at the pressure test point. Turn captured screw
counter clockwise 2 or 3 turns and then place tubing to pres-
sure gauge over test point (Use test port labeled “OUT”).
After taking pressure reading, be sure and turn captured
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for gas leaks.

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installing rear (#1) and front logs (#2 and #3), cover the entire top surface of the vermiculite in the burner pan with the rock
w
ool su
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