MHSC VWF18NA Installation And Operating Instructions Manual

Vented gas log set
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Vented Gas Log Set
Models: VWF18NA, VWF24NA,
VWF30NA, VWF36NA
WARNINGS
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.
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 fire department.
Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
This gas log set is to be installed only in a
solid-fuel burning fireplace with a working flue
constructed of noncombustible material.
277300
Installation and Operating
VWF log cover
Instructions
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future refer-
ence.
27D7300 7/10 Rev. 9

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Summary of Contents for MHSC VWF18NA

  • Page 1 Vented Gas Log Set Models: VWF18NA, VWF24NA, VWF30NA, VWF36NA WARNINGS 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. – Do not store or use gasoline or other...
  • Page 2: Table Of Contents

    CONTENTS VWF Series Vented Gas Log Set Thank you and congratulations on your purchase of an MHSC Log Set. PLEASE READ THE INSTALLATION AND OPERATION INSTRUCTIONS BEFORE USING THE APPLIANCE! IMPORTANT: Read all instructions and warnings carefully before starting installation.
  • Page 3: Important Safety Information

    2. Installation and repair should be done by a qualified to inspect the gas logs and replace any part of the service person. MHSC Vented Gas Logs must be control system and any gas control which has been installed only in a masonry or a UL 127 solid-fuel under water.
  • Page 4: Product Specifications

    été accrédités aux È.U. par le National Fireplace Institute ® (NFI) comme étant des spécialistes du NFI en matièred’appareils de chauffage au gaz. Model VWF18NA 18" 12" 12Z\x" 16Z\x" Minimum Hearth Dimensions* VWF24NA 24"...
  • Page 5: Getting Started

    VWF Series Vented Gas Log Set GETTING STARTED MINIMUM FREE OPENING AREA OF CHIM- MAKE SURE YOU HAVE RECEIVED ALL PARTS NEY DAMPER FOR VENTING Check your packing list to verify that all listed parts have been received. You should have the following: The fireplace and gas logs function as BURNER - GRATE ASSEMBLY 18", 24", 30", 36"...
  • Page 6: Placement In A Fireplace With A Restrictive Barrier

    VWF Series Vented Gas Log Set PLACEMENT IN A FIREPLACE WITH A RESTRICTIVE BARRIER IMPORTANT INFORMATION FOR THE INSTALLATION OF THIS GAS LOG The following are guidelines for placing a VWF log set with SPK, MVVK, or CVTHL kit in a fireplace that has a restrictive barrier along the bottom front opening of the fireplace.
  • Page 7: Installation

    INSTALLATION VWF Series Vented Gas Log Set 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 4 to prevent full closure of the fireplace damper blade and provide a minimum flue opening, per table on page 5.
  • Page 8: Installation For Gas Valve Kits

    VWF Series Vented Gas Log Set INSTALLATION FOR GAS VALVE KITS LP sets must be installed with a SPK or SUPPLEMENTAL INSTRUCTIONS FOR SPK- MVVKLP Kit which includes the air mixing NGA/SPK-LPA nut and vermiculite. The natural gas orifice must be removed. Adjust pilot flame to cover Burner Fitting thermocouple...
  • Page 9 INSTALLATION FOR GAS VALVE KITS VWF Series Vented Gas Log Set Screw Figure 8 - Install Pilot FP2731 FP2731 Install pilot Heat Shield FP2732 Figure 9 - Install Heat Shield Gas Control Valve Knob Extensions Control Knob FP2732 install heat shield 27D7300...
  • Page 10: Manvk

    VWF Series Vented Gas Log Set INSTALLATION FOR GAS VALVE KITS SUPPLEMENTAL INSTRUCTIONS FOR MANVK The MANVK kit is for Natural Gas Only Injector MANVK Kit Includes FP2733 Reducer Valve Control Knob Extenders Knob Control Knob Valve Knob Extenders Figure 10 - MAnVK SUPPLEMENTAL INSTRUCTIONS SUPPLEMENTAL INSTRUCTIONS...
  • Page 11: Cvthl-Ng

    VWF Series Vented Gas Log Set INSTALLATION FOR GAS VALVE KITS SUPPLEMENTAL INSTRUCTIONS FOR CVTHL-NG Heat Shield CVTHL-NG Kit Includes Valve Pilot for NG Burner Fitting Pipe Nipple Knob Extender Heat Shield Self Tapping Screws Pilot Bracket Pipe Nipple Natural Gas Injector Reducer Control Knob...
  • Page 12: Wiring (Millivolt)

    VWF Series Vented Gas Log Set WIRING (MILLIVOLT) Label all wires prior to disconnection when Do not connect to 110 Volt supply servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing THTP Millivolt Valve Pilot FP2738 Figure 15 -...
  • Page 13: Connect The Gas

    VWF Series Vented Gas Log Set CONNECT THE GAS NOTICE: A qualified gas appliance installer Connecting directly to an unregulated propane/ must connect the appliance to the gas LPG tank can cause an explosion. supply. Consult all local codes before instal- lation.
  • Page 14: Log Placement

    VWF Series Vented Gas Log Set LOG PLACEMENT FILLING THE BURNER PAN Fill the burner pan with vermiculite to the bottom of the rear log and sloped to the front edge of the burner pan. Excess vermiculite can spill forward or to the side of the burner pan. Do not overfill the propane model.
  • Page 15 LOG PLACEMENT VWF Series Vented Gas Log Set Front Right 3. Place front left log #2 on the front of the grate and to Log #3 the left. Figure 19 4. Place front right log #3 on the front of the grate and to Front Left the right.
  • Page 16: Vwf24Mo (Massive Oak)

    VWF Series Vented Gas Log Set LOG PLACEMENT VWF24 MASSIVE OAK LOGS Shield Plate 1. Slide shield plate behind burner pan. Figure 22 2. Center rear log #1 on grate bars and flush with rear of the grate. Figure 23 Rear Log #1 Burner Pan Figure 22 -...
  • Page 17: Vwf30Mo (Massive Oak)

    LOG PLACEMENT VWF Series Vented Gas Log Set Left Side Middle Log #4 Right Side Middle 6. Place right side middle log #5 as shown. Log #5 Figure 26 7. Place left top log #7 as shown. Figure Right Top Log #6 LG844 Figure 26 - Place Right Side Middle Log and Left Top Log...
  • Page 18 VWF Series Vented Gas Log Set LOG PLACEMENT Front Left Log #2 Front Right Log #3 3. Place front left log #2 on the front of the grate and to the left. Figure 30 4. Place front right log #3 on the front of the grate and to the right.
  • Page 19: Vwf36Mo (Massive Oak)

    LOG PLACEMENT VWF Series Vented Gas Log Set Shield Plate VWF36 MASSIVE OAK LOGS 1. Slide shield plate behind burner pan. Figure Burner Pan LG852 Figure 34 - Rear Log #1 Slide Shield Plate Behind Burner Pan Lg852 2. Center rear log #1 on grate bars and VWF30 shield plate flush with rear of the grate.
  • Page 20 VWF Series Vented Gas Log Set LOG PLACEMENT Right Side Middle Log Left Side Right Side Log Log #6 6. Install left side log #6. Figure 37 7. Install right side middle log #7. Figure 37 8. Install right side log #10. Figure 37 Top Left Middle LG855 Log #8...
  • Page 21: Vwf18Ao (American Oak)

    VWF Series Vented Gas Log Set LOG PLACEMENT VWF18 AMERICAN OAK LOGS Rear Log #1 NOTE: Each log has an identifying number embossed on bottom surface. 1. Place Back Log #2 on grate bars on back of grate. Figure Front Log #1 LG859 Figure 41 - Place Rear Log on Grate Bars...
  • Page 22: Vwf24Ao (American Oak)

    VWF Series Vented Gas Log Set LOG PLACEMENT VWF24 AMERICAN OAK LOGS Rear Log #1 NOTE: Each log has an identifying number embossed on bottom surface. 1. Place Back Log #2 on grate bars on back of grate. Figure 45 Front Log #2 Figure 45 - LG863...
  • Page 23: Vwf30Ao (American Oak)

    LOG PLACEMENT VWF Series Vented Gas Log Set VWF30 AMERICAN OAK LOGS Rear Log #2 NOTE: Each log has an identifying number embossed on bottom surface. 1. Place Back Log #2 on grate bars on back of grate. Figure 49 LG867 Figure 49 - Front Log #1...
  • Page 24 VWF Series Vented Gas Log Set LOG PLACEMENT Left Crossover Log #7 7. Place Left Crossover Log #7 on Log #2 and Log #5. Figure 53 Right Crossover Log LG871 Figure 53 - Place Left Crossover Log #7 LG871 8. Place Right Crossover Log #8 on VWF30AO left cross log Log #3 and Log #7.
  • Page 25: Vwf24B (Birch)

    LOG PLACEMENT VWF Series Vented Gas Log Set MODELS VWF24B (6 Logs) Top Left Top Right Figure 55 Log #6 Log #5 1. Slide shield plate down back of burner pan. Left Front 2. Place Back Log #1 on grate bars on back Log #4 of grate.
  • Page 26: Vwf24/18Sro (Split River Oak)

    VWF Series Vented Gas Log Set LOG PLACEMENT MODELS VWF24/18 SPLIT RIVER OAK 1. Slide shield plate behind burner pan. Figure 57 Shield Plate Burner Pan Rear Log #1 Figure 57 - LG837 Slide Shield Plate Behind Burner Pan LG837 2.
  • Page 27 LOG PLACEMENT VWF Series Vented Gas Log Set Bottom Front Left Log #5 5. Rest Bottom Left Log #5 on back log #1 and to the outside of the first grate prong. Figure 6. Rest right end of Top Right Log #4 on bottom right log.
  • Page 28: Vwf30/24Sro (Split River Oak)

    VWF Series Vented Gas Log Set LOG PLACEMENT MODELS VWF30/24 SPLIT RIVER OAK Shield Plate 1. Slide shield plate behind burner pan. Figure 62 Burner Pan LG830 Figure 62 - Slide Shield Plate Behind Burner Pan Rear Log #1 LG830 2.
  • Page 29 VWF Series Vented Gas Log Set LOG PLACEMENT Bottom Front Left Log #5 5. Rest right end of Top Right Log #4 on bottom right log. Figure 65 6. Rest Bottom Left Log #5 on back log #1 and to the outside of the left grate prong.
  • Page 30: Vwf36/30Sro (Split River Oak)

    VWF Series Vented Gas Log Set LOG PLACEMENT MODELS VWF36/30 SPLIT RIVER OAK Shield Plate 1. Slide shield plate behind burner pan. Figure 67 Burner Pan Figure 67 - LG852 Rear Log #1 Slide Shield Plate Behind Burner Pan Lg852 VWF30 shield plate First Grate Sixth Grate...
  • Page 31 VWF Series Vented Gas Log Set LOG PLACEMENT Bottom Front Left Log #5 5. Rest right end of Top Right Log #4 on bottom right log. Figure 70 6. Rest Bottom Left Log #5 on back log #1 and to the outside of the left grate prong. Figure 70 LG885 Top Right...
  • Page 32: Vwf18Spa (Split Pine)

    VWF Series Vented Gas Log Set LOG PLACEMENT MODELS VWF18 SPLIT PINE 1. Slide shield plate behind burner pan. Figure 72 Shield Plate Burner Pan Figure 72 - LG837 Slide Shield Plate Behind Burner Pan Right Front Log #1b Left Front Log #1a LG837 VWF18 shield plate 2.
  • Page 33 LOG PLACEMENT VWF Series Vented Gas Log Set Rear Log #3 5. Fit cutout in the bottom left of Rear Log #3 over the back end of log #1a. Rest right end of Log #3 on rear grate bar. Figure 75 Right Log #4 LG889 Figure 75 -...
  • Page 34 VWF Series Vented Gas Log Set LOG PLACEMENT Top Center Log #7 8. Lay Top Center Log #7 across log #5 with back end resting on Log #3. Figure 78 LG892 Figure 78 - Place Top Center Log Top Left Log #8 LG892 VWF18SP Top ctr log 9.
  • Page 35: Vwf24Spa (Split Pine)

    VWF Series Vented Gas Log Set LOG PLACEMENT MODELS VWF24 SPLIT PINE Shield Plate 1. Slide shield plate behind burner pan. Figure 80 Burner Pan Right Front Log #1b Left Front LG830 Log #1a Figure 80 - Slide Shield Plate Behind Burner Pan 2.
  • Page 36 VWF Series Vented Gas Log Set LOG PLACEMENT Right Log #4 6. Rest front end of right log #4 on right top of log #1b. The back end of log #4 rests to right hump on log #3. Figure 84 Right Middle Log #5 Left Log #7...
  • Page 37: Vwf30Spa (Split Pine)

    LOG PLACEMENT VWF Series Vented Gas Log Set MODELS VWF30 SPLIT PINE 1. Slide shield plate behind burner pan. Figure 89 Shield Plate Burner Pan Figure 89 - LG821 Slide Shield Plate Behind Burner Pan Right Front Log Left Front Log LG821 2.
  • Page 38 VWF Series Vented Gas Log Set LOG PLACEMENT Left Log #6 Right Log #4 6. Rest front end of right log #4 on right top of log #1b. The back end of log #4 rests to right hump on log #3. Figure 93 7.
  • Page 39: Vwf24/18Wp (Weathered Pine)

    LOG PLACEMENT VWF Series Vented Gas Log Set MODEL VWF24/18WP WEATHERED PINE Shield Plate 1. Slide shield plate behind burner pan. Figure 97 Burner Pan Figure 97 - LG837 Slide Shield Plate Behind Burner Pan Rear Log #1 LG837 VWF18 shield plate 2.
  • Page 40 VWF Series Vented Gas Log Set LOG PLACEMENT Top Left Log #5 Top Right Log #4 5. Place Top Right Log #4 on Bottom Right Log #2 resting on grate. Figure 100 6. Place Top Left Log #5 behind Rear Log #1 on the notch on rear left of grate stand.
  • Page 41: Vwf30/24Wp (Weathered Pine)

    VWF Series Vented Gas Log Set LOG PLACEMENT MODEL VWF30/24WP WEATHERED PINE Shield Plate 1. Slide shield plate behind burner pan. Figure 101 Burner Pan Rear Log #1 LG830 Figure 101 - Slide Shield Plate Behind Burner Pan 2. Place Rear Log #1 on back of grate. LG830 Left side should fit on grate in front of rear stand.
  • Page 42 VWF Series Vented Gas Log Set LOG PLACEMENT Top Right Log #4 Bottom Left Log #3 4. Place Top Right Log #4 on Bottom Right Log #2 resting on grate. Figure 104 5. Place Bottom Left Log #3 on grate. The “V” of the log should straddle the end grate bar.
  • Page 43: Vwf36/30Wp (Weathered Pine)

    LOG PLACEMENT VWF Series Vented Gas Log Set MODEL VWF36/30WP WEATHERED PINE Shield Plate 1. Slide shield plate behind burner pan. Figure 106 Burner Pan LG830 Figure 106 - Slide Shield Plate Behind Burner Pan Rear Log LG830 2. Place Rear Log #1 on back of grate. VWF24 shield Left side should fit on grate in front of rear stand.
  • Page 44 VWF Series Vented Gas Log Set LOG PLACEMENT Top Left Log #5 5. Place Top Right Log #4 on Bottom Right Log #2 resting on grate. Figure 109 6. Place Top Left Log #5 behind Rear Log #1 on the notch on rear left of grate stand.
  • Page 45: Operating Instructions

    VWF Series Vented Gas Log Set OPERATING INSTRUCTIONS FOR SPK AND CVTHL KITS SAFETY INSTRUCTION FOR MANUAL CONTROL (SPK) AND HI/LO CONTROL (CVTHL) FOR YOUR SAFETY READ BEFORE LIGHTING A. 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.
  • Page 46: Millivolt Control Lighting Instructions

    VWF Series Vented Gas Log Set OPERATING INSTRUCTIONS FOR MVVK KITS MILLIVOLT CONTROL LIGHTING INSTRUCTIONS The Millivolt control does not come preassembled with an on/off switch so that it may be customized for the specific application with a wall switch, remote, etc. A switch/remote must be connected to enable the burner to light.
  • Page 47: Operating Instructions For Manvk Kits

    OPERATING INSTRUCTIONS FOR MANVK KIT VWF Series Vented Gas Log Set SAFETY INSTRUCTION FOR MANUAL CONTROL WITHOUT PILOT If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. FOR YOUR SAFETY READ BEFORE LIGHTING A.
  • Page 48: Flame Appearance

    VWF Series Vented Gas Log Set FLAME APPEARANCE CHECKING BURNER FLAMES Flame should be yellow and extend vertically (not curling toward fireplace screen). Ember bed should have a yellow/orange glow LG909 Figure 111 - Flame Appearance LG909 VWF30 Flame appearance PILOT FLAME APPEARANCE Thermocouple/ Thermopile Tip...
  • Page 49: Fireplace Draft Test

    It is critical to verify that your chimney is drafting properly because the fireplace and gas logs function as a system. Although MHSC goes to great lengths to design vented gas log sets that minimize soot- ing, all vented log sets will soot over time. Sooting normally appears as areas of black powder-like substance on the logs.
  • Page 50: Remote Control Receiver Replacement

    VWF Series Vented Gas Log Set CLEANING AND SERVICING REMOTE CONTROL RECEIVER REPLACEMENT The remote control receiver and batteries are very sensitive to heat. Exposure to high temperatures can cause the receiver to malfunction and shorten the life of the batteries. If your fireplace does NOT have a restrictive barrier (Page 6), such as glass doors, it is recommended that the remote receiver be affixed to the right hand side of the heat shield or placed in the front, right corner of the fireplace.
  • Page 51: Replacement Parts

    VWF Series Vented Gas Log Set REPLACEMENT PARTS ASSEMBLY 277300 Ref. Description SPK-NGA SPK-LPA MVVKNA MVVKLPA CVTHL-NG CVTHL-LP MANVK 1. Injector 27D7022 27D0406 27D7022 27D0406 27D7022 27D0406 27D7022 burner parts 2. Manual Control Valve 27D8951 27D8951 27D0303 3. Millivolt Control Valve 27D8006 27D8005 4.
  • Page 52: Massive Oak Logs

    VWF Series Vented Gas Log Set REPLACEMENT PARTS  4   2   6  1   8  5   7  3  MASSIVE OAK LOGS Ref. Description Qty. VWF18MO VWF24MO VWF30MO Back Log 27D7500 27D7506 27D7510 Left Front Log 27D7501 27D7507 27D7511 Right Front Log 27D7502 27D7508 27D7512 277300...
  • Page 53: American Oak Logs

    VWF Series Vented Gas Log Set REPLACEMENT PARTS AMERICAN OAK LOGS  1 Ref. Description Qty. VWF18AO VWF24AO VWF30AO  2 Front Log 27D8576 27D8584 27D8592 Back Log 27D8577 27D8585 27D8593 Right Middle Log 27D8588 Left Middle Log 27D8580 27D8580 27D8580 Top Right Log 27D8594 Top Left Log 27D8587...
  • Page 54: Split Pine Logs

    REPLACEMENT PARTS VWF Series Vented Gas Log Set  8  8  7  9  7  6  6  5  5  4  4  2  2  3  3  1a  1a  1b  1b SPLIT PINE LOGS Ref. Description Qty. VWF18SP VWF24SP VWF30SP Front Left Log 27D8700 27D8702 27D8704 Right Front Log...
  • Page 55: Weathered Pine Logs

    REPLACEMENT PARTS VWF Series Vented Gas Log Set WEATHERED PINE LOGS Ref. Description Qty. VWF24/18WP Rear Log 27D5140 Bottom Right Log 27D5141 Bottom Left Log 27D5142 Top Right Log 27D5143 Top Left Log 27D5144 Mid Front Log 27D5145 WEATHERED PINE LOGS 277300 Ref.
  • Page 56 VWF Series Vented Gas Log Set 27D7300...
  • Page 57 VWF Series Vented Gas Log Set 27D7300...
  • Page 58: Massachusetts Requirements

    VWF Series Vented Gas Log Set Massachusetts Residents Only — Please read and follow these special requirements 2. Approved Carbon Monoxide Detectors. Each carbon NOTE REGARDING VENTED PRODUCTS monoxide detector as required in accordance with the above This product must be installed by a licensed plumber or gas fitter provisions shall comply with NFPA 720 and be ANSI/UL 2034 when installed within the Commonwealth of Massachusetts.
  • Page 59: Lifetime Warranty

    After installation, if any of the components manufactured by MHSC in the appliance are found to be defective in materials or workmanship, MHSC will, at its option, replace or repair the defective components at no charge to the original owner.
  • Page 60 MHSC 149 Cleveland Drive • Paris, Kentucky 40361 www.mhsc.com...

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