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Superior MHW36R Installation And Operation Instructions Manual

Clean-face round back fireplace with bi-fold doors and combustion air kit
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P/N 127312-01 Rev. D 10/2025
P127312-01
This book is valuable. In addition to instructing you on how to install and maintain your appliance, it also
contains information that will enable you to obtain replacement parts or accessory items when needed. Keep
it with your other important papers.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
This wood burning fireplace complies with UL127
CAN/ULC-S610-M87 standard as a FACTORY
BUILT FIREPLACE.
This fireplace is approved for use as a wood burning fireplace or for use with a vented gas log approved to
ANSI Z21.60 or Z21.84 standards or for use with a vent-free gas log heater approved to ANSI Z21.11.2 standard .
An IHP hood must be installed when using a vent-free log heater (see Accessories, page 19).
FOR CANADA: The authority having jurisdiction
(such as the municipal building department, fire
department, etc.) should be contacted before
installation to determine the need to obtain a permit.
This installation manual will enable you to obtain a safe, efficient and dependable installation of your fireplace
system. Please read and understand these instructions before beginning your installation.
Do not alter or modify the fireplace or its components under any circumstances. Any modification or alteration of
the fireplace system, including but not limited to the fireplace, chimney components and accessories, may void the
warranty, listings and approvals of this system and could result in an unsafe and potentially dangerous installation.
IMPORTANT! TO ASSURE PROPER ALIGNMENT OF GLASS DOORS: INSTALL THIS FIREPLACE IN A SQUARE
AND PLUMB CONDITION, USING SHIMS AS NECESSARY AT SIDES AND/OR BOTTOM.
Installation and Operation Instructions
Superior® Clean-Face Round Back Fireplace
with Bi-Fold Doors and Combustion Air Kit
Models
PFS
®
C
US
SAVE THIS BOOK
Installateur : Laissez cette notice avec l'appareil.
Consommateur : Conservez cette notice pour consultation ultérieure.
Ce foyer au bois est conforme aux UL 127 CAN/ULC-
S610-M87 norme comme une USINE CONSTRUITE
CHEMINÉE.
POUR LE CANADA: L'autorité compétente (comme le
service municipal du bâtiment, les pompiers, etc.) doit
être contacté avant l'installation afin de déterminer la
nécessité d'obtenir un permis.
MHW36R

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  • Page 1 Installation and Operation Instructions Superior® Clean-Face Round Back Fireplace with Bi-Fold Doors and Combustion Air Kit Models P/N 127312-01 Rev. D 10/2025 MHW36R ® P127312-01 SAVE THIS BOOK This book is valuable. In addition to instructing you on how to install and maintain your appliance, it also contains information that will enable you to obtain replacement parts or accessory items when needed.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CAUTION Safety ....................2 The structural integrity of the mobile home floor Fireplace Installation ................2 and ceiling/roof must be maintained. Venting Installation ................6 Optional Gas Line Installation ............13 WARNING Finishing Fireplace ................15 Operation and Maintenance Guidelines ..........15 Do not install a fireplace insert in this box unless Technical Service ................
  • Page 3 SPECIFICATIONS Round Top Termination Storm Collar Flashing Firestop 42" Thimble " " " 13" Firestop " 5/8" 1" Airspace 36" To Combustible 3" Materials 41" 1" Combustible Wall Board 0" To Top Spacer 1/2" Air Space Back and Sides No Combustible J-Box Material On Face Access...
  • Page 4 FIREPLACE INSTALLATION WARNING Continued Do not pack required air spaces with insulation or " other materials. 10" MINIMUM/MAXIMUM CHIMNEY HEIGHT Minimum height of the chimney, measured from base of fireplace to flue gas outlet of termination, is 14 feet* for straight flue or a flue with one elbow set.
  • Page 5 FIREPLACE INSTALLATION FRAMING Continued 1. Frame opening for fireplace using dimensions shown in Figures 2 and 3. Standard Alternate 2. The fireplace may not be installed on carpeting, tile or any combustible Installation Installation material other than wood flooring, fireplace must be installed on a metal or wood panel extending full width and depth of fireplace.

  • Page 6: Venting Installation

    FIREPLACE INSTALLATION Continued Seal Gap HEARTH EXTENSION Fireplace Front A hearth extension projecting a minimum of 16" in front of and a minimum of 8" beyond each side of the fireplace opening is required to protect Ember combustible floor construction in front of the fireplace. Use an equal mate- Protector rial which meets the following specifications: a layer of noncombustible, inorganic material having a thermal conductivity of k = .84 BTU IN/FT...
  • Page 7 Tape, Screws or Tie Straps 8" Stainless Inner Pipe Flex Duct Extends Up to 36" Floor LINEAL GAIN PART NO. DESCRIPTION GAIN Figure 9 - Outside Air Kit AK6E Installation MHW36R Fireplace 42" 12-8DM Pipe Section 10-5/8" 18-8DM Pipe Section 16-5/8" 24-8DM Pipe Section 23-5/8"...
  • Page 8 VENTING INSTALLATION Flange Continued End of Open End Tube of Tube There are three vent kits available which have been specially designed for common installations in manufactured (mobile) homes: MW8K (8' vent kit), MW9K (9' vent kit) and MW8K-HT (8' HT vent kit). Contents of these kits are listed under Accessories on page 20.
  • Page 9 VENTING INSTALLATION WARNING Continued Do not allow insulating materials to be blown into the space inside the thimble and the chimney. To Room Above do so could result in a fire hazard. Outer Pipe Of Chimney Thimble Cathedral Ceiling 14" Min. Firestop Spacer Figure 12 Attic Above...
  • Page 10 VENTING INSTALLATION 2. Chimney weight above offset rests on return elbow. Straps must be securely nailed to rafters or joists (see Figure 15, details A and B). Continued 3. Maximum length of pipe between supports (return elbow or 12S-8DM) is 6' of angle run. Maximum of two 6' angle run sections per chimney USING ELBOW OFFSETS (30E-8DM) system (see Figure 14).
  • Page 11 VENTING INSTALLATION Continued Return Return Return Elbow Elbow Elbow Offset Elbow Offset Elbow 6' Max. 6' Max. Ceiling Support Pipe Return Return 12S-8DM 6' Max. Elbow Elbow 6' Max. Offset Elbow Offset Elbow 6' Max. 6' Max. Offset Elbow Figure 16 - Typical Offset Terminations (For Systems with 2 Elbow Sets, Maximum Height is 20') FIRESTOP SPACERS (3600FS-8DM-1) Storm Collar Overlap Shingles Top...
  • Page 12 VENTING INSTALLATION RTL-8DM Continued Storm Collar Installation (SC1) Attach Bracket Tabs Place storm collar over pipe and slide down until it is snug against the Level of Flue Gas to Outer Pipe (3 open edge of flashing (see Figure 19). Use SC1 for all round terminations. Outlet Places) Secure with NOTE: Storm collar is required but can be installed after the home is sited.

  • Page 13: Optional Gas Line Installation

    VENTING INSTALLATION Continued Self Drilling Screws 10 FOOT RULE All flue gas outlet chimney terminations must extend a minimum of 3 feet Chimney Support Bracket 18" in height above the highest point where it passes through the roof and must be at least 2 feet above the highest point of the roof that is within a horizontal distance of 10 feet (see Figure 22).
  • Page 14 OPTIONAL GAS LINE INSTALLATION NOTE: Secure incoming gas line to wood framing to provide rigidity for threaded end. Continued If you wish to install an unvented (vent-free) gas log set, ONLY UNVENTED 3. Run a 1/2" black iron gas line into fireplace through rear at gas GAS LOG SETS WHICH HAVE BEEN FOUND TO COMPLY WITH THE line conduit sleeve (if using a raised platform, add height).

  • Page 15: Finishing Fireplace

    FINISHING FIREPLACE IMPORTANT: Glass must be allowed to warm slowly and evenly. Tempered glass will withstand a gradual temperature rise to 550° Fahrenheit, which is more than a normal fire will generate. Combustible materials, such as wallboard, gypsum board, sheet rock, dry- wall, plywood, etc.
  • Page 16 OPERATION AND MAINTENANCE GUIDELINES Continued Door Removal 1. Fold doors (fully open) and press up on upper door spring clip until top pin is free of the spring clip (see Figure 28). Tip door toward middle of fireplace opening and lift door out of the lower pivot hole. 2.

  • Page 17: Technical Service

    OPERATION AND MAINTENANCE GUIDELINES TECHNICAL SERVICE Continued You may have further questions about installation, operation, or LOCATING ACCESS COVER PLATE troubleshooting. If so, visit SuperiorFireplaces.US.com. Sheet metal cover plates located underneath front hearth refractory may have shifted or moved out of place while fireplace was in transit. These cover plates Have your model and serial numbers of your fireplace ready.

  • Page 18: Accessories

    FIREPLACE ACCESSORIES CAT NO. MODEL DESCRIPTION BI-FOLD GLASS DOORS J2724 VDG36E 36" Glass Door - Brushed finish J0468 DP36E 36" Glass Door - Platinum finish J2709 VDBP36E 36" Glass Door - Black finish EMBER PROTECTOR J6906 Ember Protector GRATE J4515 Grate 36"...
  • Page 19 INSTALLATION ACCESSORIES Continued ANTI-DRAFT SHIELD (Round Top Termination Only) F0927 ADS-8DM Anti-Draft Shield for Round Top Only MESH ROUND TOP TERMINATIONS J6280 RTL-8DM Round Top Termination SQUARE TOP TERMINATION WITH LOUVERS F0921 ETL-8DM Square Top with Slip Section ADJUSTABLE HOOD Required when installing a vent-free gas log in this fireplace.
  • Page 20 INSTALLATION ACCESSORIES Continued THIMBLE EXTENSIONS 99L69 8" Thimble Extension 91L46 26" Thimble Extension FLEX DUCT (3 PACK) J1936 MP6-75 Duct Outside Air 6" x 75' AIR INLET HOOD (6 PACK) MK6-WI Air Inlet Hood FACE EXTENSION Front face extension would add 6” to the width and 6” to the height of the fireplace face. J0918 FE-36R Face Extension (C36EMW-R)

  • Page 21: Important Notices

    IMPORTANT NOTICES CANADA IMPORTANT NOTICE Canadian code CAN/ULC-S610-M87 and other pertinent NOTICE: The firebox canopy (hood) codes require stainless steel chimney for the installation A manufactured shroud which has must not be modified or replaced with of this fireplace. A Cold Air Climate Kit is also required been approved by a national test- a canopy that may be provided with in Canada and is recommended for cooler regions in the...
  • Page 22 NOTES ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ SuperiorFireplaces.US.com 127312-01D...

  • Page 23: Warranty

    ® 20 Year Limited Warranty THE WARRANTY Innovative Hearth Products ("IHP") 20 Year Limited Warranty warrants your Superior Brand wood burning fi replace ("Product") to be free from defects in materials and ® workmanship at the time of manufacture. The Product body, fi rebox and ceramic glass carry the 20 Year Limited Warranty. Ceramic glass carries the 20 Year Limited Warranty against thermal breakage only.
  • Page 24 WARRANTY KEEP THIS WARRANTY Model Number Serial Number Date Installed Dealer's Name Dealer's Phone Number Keep receipt for warranty verification Innovative Hearth Products reserves the right to make changes at any time, without notice, in design, materials, specifications, prices and also to discontinue colors, styles and products. Consult your local distributor for fireplace code information.

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