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HearthStone WFP-75 Owner's Manual

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Manufactured for: HearthStone Quality Home Heating Products, Inc.
317 Stafford Avenue, Morrisville VT 05661
PLEASE READ THIS ENTIRE OWNER'S MANUAL BEFORE YOU INSTALL
AND USE YOUR NEW WFP-75 FIREPLACE.
SAVE THIS OWNER'S MANUAL FOR FUTURE REFERENCE
CAUTION: Do not attempt to modify or alter the construction of the fireplace or
its components. Any modification or alteration of construction may void the
warranty, listings and approvals of this system. In that case, HearthStone Quality
Home Heating Products, Inc. will not be responsible for damages. Install the
fireplace only as described in these instructions.
This manual is available for free download on the manufacturer's web site. It is a
copyrighted document. Re-sale is strictly prohibited. The manufacturer may update this
manual from time to time and cannot be responsible for problems, injuries, or damages
arising out of the use of information contained in any manual obtained from unauthorized
sources.
WFP-75
Wood Fireplace
OWNER'S MANUAL
Installation And
Operating Instructions
Listed to standards
ULC-S610 and UL-127
(Model 8410)
WFP-75 Model 8410
Manual: 6400-40481
R: 1 – 6/22/2012

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Summary of Contents for HearthStone WFP-75

  • Page 1 CAUTION: Do not attempt to modify or alter the construction of the fireplace or its components. Any modification or alteration of construction may void the warranty, listings and approvals of this system. In that case, HearthStone Quality Home Heating Products, Inc. will not be responsible for damages. Install the fireplace only as described in these instructions.
  • Page 2 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 3: Table Of Contents

    THE FIREPLACE ....................3 2.1 INTRODUCTION ....................3 2.1.1 Parts Required ..................3 2.1.2 Additional Equipment (optional) ............... 3 2.2 OPERATING THE WFP-75 ................. 4 2.2.1 Fuel ......................4 2.2.2 The Use of Manufactured Logs ..............4 2.2.3 First Fires ....................5 2.2.4...
  • Page 4 5.2. CLEARANCES TO COMBUSTIBLE MATERIALS..........49 5.3. REPLACEMENT PARTS.................. 50 5.4. THERMAL CHARACTERISTICS OF COMMON FLOOR PROTECTION MATERIALS* ......................50 SAFETY RATING LABEL .................... 51 HEARTHSTONE LIMITED LIFETIME WARRANTY ........... 52 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 5: Safety Rules For Operating Your Fireplace

    SAFETY RULES FOR OPERATING YOUR FIREPLACE • Use only a HearthStone glass door, specifically designed for the model WFP-75. • When cleaning the fireplace, the ashes should be placed in a metal container with a tight fitting lid. The closed container of ashes should be placed on a non-combustible floor or on the ground outside the house, pending final disposal.
  • Page 6 We also recommend that you register your warranty online at: http://www.hearthstonestoves.com/customer-resources/ warranty-registration Registering your warranty online will help us track rapidly the information we need on your unit. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 7: The Fireplace

    2. • The WFP-75 is not intended for use with a gas log. Failure to follow these instructions will void the certification and the warranty of the fireplace and may result in an unsafe installation.
  • Page 8: Operating The Wfp-75

    2.2 OPERATING THE WFP-75 2.2.1 Fuel The WFP-75 is designed to work best when fuelled with seasoned cordwood. Use solid wood or processed solid fuel fire logs only*. Hardwoods are preferred to softwoods since the energy content of wood is relative to its density. Hardwoods will result in a longer burning fire and less frequent refuelling.
  • Page 9: First Fires

    Your WFP-75 fireplace will work best if a thick bed of hot embers is maintained in the bottom of the firebox and a minimum of two large pieces of seasoned fuel are added. Combustion efficiency is largely related to establishing a hot ember bed and hot firebox temperatures.
  • Page 10: Primary Air

    2.2.6 Primary Air There is no flue damper in the WFP-75. As is common with air tight stoves, the combustion air control sets the flow of air entering the firebox. This allows for a more precise control of the fire.
  • Page 11: Combustion Settings

    Creosote may accumulate on the glass door. This method of burning should be used only after operating the WFP-75 with the air control opened to produce a hot fire for about an hour or at medium pace for at least 2 hours. Slow combustion can be used at night in order to reduce the heat output and to prolong the burn.
  • Page 12: Negative Pressure In The House

    5. Do not abuse the unit by burning paper, or cardboard or construction material such as pressed wood, plywood or lumber. 6. Do not allow the wood to smoulder or burn without flame, since this will produce excessive creosote in the unit. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 13: Maintaining Your Wfp-75

    1. Remove the front air tube by pulling out the cotter pin on the side of the tube. They are located at the top, underneath the baffle. 2. Lift the baffle assembly and slide it out of the fireplace. You now have access to the chimney. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 14: Dealing With A Chimney Fire

    If the ashes are disposed of by burial in soil or otherwise locally dispersed they should be retained in the closed container until all cinders have thoroughly cooled. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 15: Refractory Replacement

    2.3.7 Glass Care – Replacement The glass used in the WFP-75 is 5 mm thick of dimension: 13.65” x 25.30” and tested to reach temperatures up to 1400º F. If the glass breaks, it must be replaced with one having the same specification.
  • Page 16: Glass Care - Cleaning

    Figure 4 2.3.8 Glass Care – Cleaning The WFP-75 is designed to keep the glass clean under normal operating conditions. If the WFP-75 is operated continuously with the combustion air controls closed, the glass will tend to get dirty unless the fuel, firebox and glass are maintained at higher temperatures. To clean the glass, there are a number of specially designed cleaners.
  • Page 17: Gasket Replacement

    C. The WFP-75 may be installed directly on the floor or on a raised combustible or non combustible base (see figure 5). That base must be at least equal (or exceed) the height of the floor protection.
  • Page 18: Hearth Extension Requirements

    8" (20 cm) on each side of the door opening (see figure 7). The joint between the hearth extension and the fireplace hearth needs to be made of non-combustible material such as sheet metal (not included) as shown on figure 8. Figure 7 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 19: R Value Calculations

    K values to R by dividing the thickness of each material by its K value. Add the R values of your proposed materials as shown in the previous example. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 20: How To Eliminate The Need Of A R Value

    Figure 9 (B). Please note that a combustible floor protection of at least 18” long must be installed in front of the fireplace as illustrated in Figure 9 (A). Figure 9 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 21: Framing, Facing, Mantel, And Combustible Shelf

    MATERIALS. WARNING: THE FIREPLACE MUST NOT BE IN CONTACT WITH ANY INSULATION OR LOOSE FILLING MATERIAL. COVER THE INSULATION WITH GYPROC PANELS AROUND THE FIREPLACE. (CHECK LOCAL CODES) Figure 10 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 22 Figure 11 Figure 12 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 23 Figure 13 Figure 14 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 24 Figure 15 Figure 16 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 25: Insulated Chase Construction

    The faceplate is designed to overlap the material surrounding the fireplace. If the material is thicker, use a faceplate gauge for positioning and make sure that the faceplate can be removed after it has been installed. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 26 Figure 18 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 27: Combustible Shelf

    Shelf Position 6” / 152 mm 58” / 1473.2mm 8” / 203 mm 60” / 1524mm 10” / 254 mm 62” / 1574.8 mm 12” / 305mm 64” / 1625.6mm Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 28 Figure 20 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 29: Blower Connection

    Connect the black wire with the black wire of the terminal block. The ground (green or skinned wire) must be attached to the fireplace metal frame. Figure 21 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 30: Door And Facade Installation

    2. Attach the fireplace springs to the holes in the upper corners of the facade frame. 3. Firmly push the facade to the fireplace to secure the bottom. (Figure 23) Figure 23 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 31: Install The Facade

    2.5.4 Adjusting the blower door The blower door is held closed by a magnet on the right side of the facade. To adjust the strength of the closure, spin the magnet to adjust in/out. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 32: Install The Door

    2.5.5 Install the door: The hinges on your WFP-75 are pre-adjusted to position the door in its correct place. To install the door, follow these steps (Figure 25): 1. Use the hex wrench included in the facade package to loosen the screws on the upper hinge of the door.
  • Page 33: Install The Door Knob

    If the door hinges are misaligned, it will tilt. It is therefore recommended to align them. Once the ideal position has been achieved, lock the hinges in place by tightening the set screws. Figure 27 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 34: Hot Air Ducting Installation

    2.6 HOT AIR DUCTING INSTALLATION Different hot air ducting systems can be installed with the WFP-75: • Gravity kit • Forced air kit 2.6.1 Gravity Convection Air Kit The kit includes: • 2 x hot air outlets (grilles and frames);...
  • Page 35 Installing the ducts at different elevations will tend to exhaust more heat out of the higher grilles (figure 31). Figure 30 Figure 31 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 36: Forced Air Convection Kit (Not Tested Under Epa Certification)

    1 control box with heat sensor and PC board The knock-outs provided on the back and on the sides of the WFP-75 allow the connection of insulated flexible pipe which enables you to heat adjacent rooms up to 50 feet from the fireplace (see figure 34).
  • Page 37 Since the forced air kit requires electricity, make sure that the connections to the fan have been made according to the local codes and comply with their requirements (see instruction provided with the kit). Figure 32 Figure 33 Figure 34 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 38: Fresh Air Kit

    4. One (1) 3” to 4” adaptor The following components are not included: 1. A 3” insulated flexible conduit 2. The outside air inlet cap 3. The 2 adjustable straps Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 39 Carefully push the insulation and plastic cover back over the pipe. Fix the plastic in place using aluminum tape. Figure 35 Figure 36 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 40 5. Secure a 3” insulated flexible conduit (not included) to the adapter and the outside termination (not included) with the 2 adjustable straps (not included) figure 35, 36 & 41. Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 41: The Chimney

    2. The WFP-75 is listed only with chimney systems described in table 2. 3. The chimney must be dedicated and must not vent any other appliance.
  • Page 42: Chimney Installation Instructions

    7. Install the chimney cap. 8. When a ventilated roof flashing is installed, precautions are to be taken not to caulk or seal the ventilating openings. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 43 EXAMPLE OF TYPICAL CHIMNEY INSTALLATION Figure 44 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 44 When you build a combustible chase enclosure for chimney sections above the roof, refer to the chimney manufacturer for clearances to combustible materials. Figure 45 – Example of a combustible chase enclosure installation above the roof Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 45: Offset Chimney Installation

    5. From below, install a firestop supplied by the chimney manufacturer (see figure 44). 6. A support must be used on the first 15' section (4.6 m). 7. Continue with the regular installation. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 46 Figure 46 Figure 47 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 47 48 part A) which can be secured with screws (see figure 48 part B) and the 7-inch flue. For Security Chimneys, the part number is 6AW7. Figure 48 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 48 OF AN ASHT+) TO YOUR ANCHOR PLATE TO USE YOUR 7’’ CHIMNEY. FOR THE S-2100 OF 7”, AN ADDITIONNAL ADAPTER (PART NUMBER 7UCA) NEEDS TO BE FIXED TO THE 6AW7. SEE SECURITY CHIMNEY FOR MORE INFORMATION. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 49: Angled Wall Radiation Shield

    For offset support installation, refer to the instructions provided with the support by the chimney manufacturer. Many manufacturers will provide the maximum height of chimney that can be supported by the support. Make sure you respect those parameters. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 50: Chimney Chase And Multiple Terminations

    16" (410 mm) horizontally, and 18" (460 mm) vertically. This separation is to prevent smoke migrating from one chimney to another (see figure 50). Figure 50 Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 51: Installation Instructions For Masonry Application

    7. Seal the opening around the liner with high temperature refractory cement. 8. Then, follow the chimney manufacturer’s instructions to connect the extended liner section to the special chimney connector. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 52: Options

    Forced Air Convection Kit: 94-57100 Includes: one blower, one 5" flex adapter, 3 pipe clamps, and one control box with heat sensor and PC Board. Fire Screen: 94-69100 Includes: one rigid spark screen. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 53: Appendix

    6" or less. 64" (163 cm) measured from the base of the fireplace for a shelf with a depth of more than 12" (15 cm). Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 54: Replacement Parts

    * Information as reported by manufacturers and other resources ** For a 1/8" thickness. You cannot «stack» horizontal still air to accumulate R-values; you must separate each later of horizontal still air with another noncombustible material. Hearthstone Quality Home Heating Products, Inc ® WFP-75 Model 8410...
  • Page 55: Safety Rating Label

    No. de Série D'INSTALLATION DANS VOTRE SECTEUR. INSTALL AND USE ONLY IN ACCORDANCE WITH HEARTHSTONE INSTALLATION AND OPERATION INSTRUCTIONS. L'INSTALLATION ET L'OPERATION DOIT SE FAIRE SELON LES INSTRUCTIONS D'INSTALLATION ET D'UTILISATION DE HEARTHSTONE. PREVENT HOUSE FIRES PRÉVENEZ LES INCENDIES  Use solid wood fuel only.
  • Page 56: Hearthstone Limited Lifetime Warranty

    Paint (peeling), gaskets, insulation, firebrick, and ceramic fibre blankets. 1 year *Pictures required Shall your unit or a components be defective, contact immediately your HearthStone dealer. Prior to your call make sure you have the following information necessary to your warranty claim treatment: •...

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