HearthStone WFP-100 Owner's Manual
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HearthStone WFP-100 Owner's Manual

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Manufactured for: HearthStone Quality Home Heating Products, Inc. 317 Stafford Avenue,
PLEASE READ THIS ENTIRE OWNER'S MANUAL BEFORE YOU INSTALL AND USE YOUR
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
California Prop 65
WARNING:
This product can expose you to
chemicals including glass wool fiber and carbon
monoxide which are known to the State of California to
cause cancer, birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
Morrisville VT 05661
NEW WFP-100 FIREPLACE.
from unauthorized sources.
FP15 Waterloo
WFP-100
Woodstove
OWNER'S MANUAL
Operating Instructions
Listed to standards ULC-S610 and UL 127
(Model 8420)
Installation And
WFP-100 Model 8420
Manual: 6400-40405
R: 08/11/21

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  • Page 1 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 CO Emissions: The WFP-100 has an average CO emission rate of 157.4 g/h. Wet wood or unapproved fuel described above can greatly affect the emissions of a wood burning fireplace.

  • Page 3: Table Of Contents

    2.4 Zone Heating and How to make it work for you ..................8 2.5 The Benefits of Low Emissions and High Efficiency ................9 2.6 The HEARTHSTONE Commitment to You and the Environment ............9 2.6.1 What is Your New Fireplace Made Of? ..................9 Fuel .................................
  • Page 4 6.3 Fireplace Installation ..........................25 6.3.1 Standoff installation ........................25 6.3.2 Transportation Packaging ......................25 6.3.3 Locating the WFP-100 ........................25 6.3.4 Clearances to combustible materials.................... 26 6.3.5 Hearth extension construction options ..................27 6.3.6 Minimum Heart Extension Requirements ..................33 6.3.7 Framing construction ........................

  • Page 5: Part A - Operation And Maintenance

    CORRECTLY. IF YOU ARE REQUIRED TO INSTALL AN OUTDOOR AIR SUPPLY, WE RECOMMEND THAT YOU ALSO INSTALL A CO DETECTOR/ALARM TO PROVIDE WARNING IF SMOKE SPILLAGE FROM THE FIREPLACE OCCURS. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 6 RISK OF FIRE OR INJURY, DO NOT INSTALL AN UNVENTED GAS LOG SET INTO THIS FIREPLACE. PLEASE NOTE THAT THE PICTURES SHOWN IN THIS MANUAL ARE GENERIC AND MAY NOT MATCH EXACTLY THE LOOK OF YOUR FIREPLACE. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 7: General Information

    CAN/CSA-Z240 MH standard. The recommended log length is 16 inches, placed in the north-south orientation. For more details see section 3 - Fuel. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 8: Dimensions

    2.3.1 ZONE HEATING AND HOW TO MAKE IT WORK FOR YOU Your new WFP-100 wood fireplace is a space heater, which means it is intended to heat the area it is installed in as well as spaces that connect to that area, although to a lower temperature. This is called zone heating and it is an increasingly popular way to heat homes or spaces within homes.

  • Page 9: The Benefits Of Low Emissions And High Efficiency

    THE BENEFITS OF LOW EMISSIONS AND HIGH EFFICIENCY The low smoke emissions produced by the special features inside the WFP-100 firebox mean that your household will release up to 90 percent less smoke into the outside environment than if you used an older conventional stove.

  • Page 10: Fuel

    The log length recommended for your fireplace is 16" (406mm) The pieces should be a consistent length, with a maximum of 1" (25 mm) variation from piece to piece. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 11: Piece Size

    • burn a piece; wet wood hisses and sizzles in the fire and dry wood does not You could buy a wood moisture meter to test your firewood. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 12: Manufactured Logs

    (2-3 in) of dry firewood in the firebox. You can close the door as soon as you loaded the pieces. Let burn until you have a good coal bed. You are now ready for the main load. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 13: Conventional Fire Starting

    Always place at least 5 to 8 pieces on the fire at a time in the North-South orientation so that the heat radiated from one piece helps to ignite the pieces next to it. Each load of wood HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 14: Ash Removal

    Therefore, allow each load of wood to burn down so that the space begins to cool off a HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 15: Shutting Down The Air Supply

    A : Cold start or Maximum burn rate. B : Mid-High until the factory setting temperature is reached. B-2 or B-1 : Mid-Low or Low once the factory setting is reached. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 16: Building Different Fires For Different Needs

    The charging methods presented below are those that were used during emissions certification. For EPA Certification testing, wood logs were 16 ± 1 inches long and the specie used was beech. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 17 In fireboxes that are roughly square, wood can be loaded so that looking through the glass door you see the ends of the logs (north-south) or the sides of the logs (east-west). This fireplace is designed to burn efficiently in the north-south orientation. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 18 North-south loads break down more quickly, but much more wood can be loaded at a time. This makes north-south loading good for high output, long lasting fires for cold weather. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 19: Maintaining Your Wood Heating System

    Therefore, the gasket should be inspected periodically to check for a good seal. The gasket seal may be improved with a simple latch mechanism adjustment. The right hand door has the operational latch mechanism installed. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 20: Door Alignment

    Using a flat screwdriver, turn the adjustable hinge rods in the direction shown to adjust the doors. Tighten all door hinge pressure screws when they are at the desired positions. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 21: Replacing The Door Gaskets

    5.1.6 REPLACING THE DOOR GLASS The glass used in the WFP-100 is 5 mm thick of dimension 16.312" x 15.763" (41,4 cm x 40,0 cm) and tested to reach temperatures up to 1400º F. If the glass breaks, it must be replaced with one having the same specification.

  • Page 22: Cleaning And Painting The Fireplace

    HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 23: Cleaning The Chimney

    5. Re-install the baffle, the air tubes and the rain cap. CAUTION OPERATION OF YOUR WFP-100 WITHOUT THE BAFFLE MAY CAUSE UNSAFE AND HAZARDOUS TEMPERATURE CONDITIONS AND WILL VOID THE WARRANTY. 5.2.4 FIRE BAFFLE REMOVAL PRIOR TO CLEANING THE CHIMNEY Before starting to clean your chimney, we recommend that you remove the fire baffle to avoid creosote dust collection on top of the baffle.

  • Page 24: Chimney Fire

    DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE. • THIS FIREPLACE HAS NOT BEEN TESTED TO BE INSTALLED IN A MOBILE HOME. • THIS FIREPLACE HAS NOT BEEN TESTED TO BE INSTALLED INSIDE A MASONRY CHIMNEY. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 25: Regulations Covering Fireplace Installation

    6.2 REGULATIONS COVERING FIREPLACE INSTALLATION When installed and operated as described in these instructions, the WFP-100 wood fireplace is suitable for use in residential installations. In Canada, the CSA B365 Installation Code for Solid Fuel Burning Appliances and Equipment and the CSA C22.1 Canadian National Electrical Code are to be followed in the absence of local code requirements.

  • Page 26: Clearances To Combustible Materials

    Wall in front of fireplace: 48" Ceiling: 84" (2.13 m) measured from the base of the fireplace. Fireplace enclosure: Back : 0" Sides : 0" Floor (under the fireplace): 0" Chimney: 2" (50 mm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 27: Hearth Extension Construction Options

    6.3.5 HEARTH EXTENSION CONSTRUCTION OPTIONS The WFP-100 may be installed directly on the floor or on a raised combustible or non combustible base. Option Installation type R factor required Non combustible floor protection lenght Directly on the floor Yes (2.00) 32"...
  • Page 28  An 84" clearance between the fireplace base and the ceiling (A) must be respected. MINIMUM MEASUREMENTS 84" (2134 mm) 32" (813mm) Less than 8" (203 mm) 2" (51 mm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 29  An 84" clearance between the fireplace base and the ceiling (A) must be respected. MINIMUM MEASUREMENTS 84" (2134 mm) 16" (406mm) More than 8" (203 mm) 2" (51 mm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 30  An 84" clearance between the fireplace base and the ceiling (A) must be respected. MINIMUM MEASUREMENTS 84" (2134 mm) 20" (508 mm) Between 8" and 12" 2" (51 mm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 31  An 84" clearance between the fireplace base and the ceiling (A) must be respected. MINIMUM MEASUREMENTS 84" (2134 mm) 16" (406 mm) 12" and more 2" (51 mm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 32 * 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 layer of horizontal still air with another non-combustible material. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 33: Minimum Heart Extension Requirements

    Check local codes for approved alternatives. CAUTION DO NOT LEAVE CARPET UNDER THE FLOOR PROTECTION IN FRONT OF THE FIREPLACE. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 34: Framing Construction

    M) MEASURED FROM THE BASE OF THE FIREPLACE. LEGEND Combustible material allowed in this area Non-combustible material only in this area MEASUREMENTS 50 3/4" (128,8 cm) 26 7/8" (68,3 cm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 35 See Appendix 4: Installing the Fresh Air Intake Kit for installation instructions of a fresh air intake kit (L).  See Appendix 2 – Forced Air Distribution kit (94-57200) for more details on installation. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 36 VALUES (M) AND (N) ARE MINIMUM MEASUREMENTS. THEY MAY NEED TO BE INCREASED TO ALLOW INSTALLATION OF A FRESH AIR INTAKE KIT OR FORCED AIR KIT, OR DEPENDING ON THE FINISH MATERIAL USED. MEASUREMENTS 67 5/8" (1718 mm) 95 11/16" (2430 mm) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 37: Facing

    It is possible to install a shelf but it must be made of non combustible materials. It must be installed at, at least, 52" from the base of the fireplace. WARNING THE SHELF WILL BE HOT. DO NOT PUT COMBUSTIBLE MATERIALS ON THE SHELF. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 38: Façade And Door Installation

    Firmly push the facade to the fireplace to secure the bottom. Open the Blower door. Secure the facade using the 2 self-drilling screws HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 39: The Venting System

    (relative to outside) and a slightly positive pressure zone high in the house. If there is no fire burning in a heater connected to a chimney that is shorter than the warm HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 40: Why The Chimney Should Penetrate The Highest Heated Space

     The WFP-100 is listed only with chimney systems described in Table 3.  A chimney venting a fireplace shall not vent any other appliance.
  • Page 41 16" (410 mm) horizontally, and 18" (460 mm) vertically. This separation is to prevent smoke migrating from one chimney to another HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 42: Chimney Installation Instructions

    8.6 CHIMNEY INSTALLATION INSTRUCTIONS Always refer to the chimney manufacturer’s Installation manual to ensure a safe installation. Some non- illustrated parts may be required. 8.6.1 EXAMPLES OF TYPICAL CHIMNEY INSTALLATION HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 43: Exterior Offset Installation

    3. Follow the chimney’s manufacturers’ instructions and place the first chimney length on the fireplace. For all chimneys, you must use an anchor plate (A) before installing the first chimney length. Continue installing chimney lengths making sure to lock each length in place HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 44: Offset Chimney Installation

    If penetrating a wall, install a wall radiation shield supplied by the chimney manufacturer. 3. Use another elbow to turn the chimney vertically. Secure the elbow. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 45 ON TOP OF THE FIREPLACE.  IF THE FLUE OUTLET IS CUT ONLY AROUND THE HOOKS, MAKE SURE THAT THE FLUE DAMPER MECHANISM WORKS PROPERLY BEFORE CLOSING THE WALLS. TABLE 3 - LISTED CHIMNEYS FOR YOUR WFP-100 CHIMNEY BRAND TYPE INNER DIAMETER MANUFACTURER...

  • Page 46: Angled Wall Radiation Shield

    For roof 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-100 Model 8420...

  • Page 47: Universal Offset Support

    7. Then, follow the chimney manufacturer’s instructions to connect the extended liner section to the special chimney connector. Note: Make sure the liner exceeds at least 12” (30 cm) the top of masonry chimney. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 48: Supply Of Combustion Air

    This kit allows distributing heat to the room using natural convection. For the complete installation procedure, see the installation manual provided with the kit. You can also download this manual on the website. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 49: Appendix 2 - Forced Air Distribution Kit (94-57200)

    *The EPA standard states that it is necessary to perform certification testing with any ventilation that is likely to alter the units’ performance. For this reason, HEARTHSTONE has tested the effects of the forced air kit on the emissions of fine particles.

  • Page 50: Appendix 3 - Blower Maintenance Or Replacement

    2. With a short square head screwdriver, remove the 4 screws (C) holding in place the heat shield (B). 3. Remove and keep the heat shield (B) and the 4 4. Cut the Tie wrap (D). screws (C). HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 51: Appendix 4 - Installing The Fresh Air Intake Kit

     The insulated flexible pipe and the outside wall termination can be installed over or under the floor level. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 52 *For a pipe length less than 20 ft, use a 5 pipe diameter. For a pipe length of more than 20ft, or having more than two deviations, use a 6 pipe diameter. The maximum pipe length is 30 ft (9 m). HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 53: Appendix 5 - Refractory Slabs Replacement

    2) Using a power screwdriver and hex tip 5/16", remove the slab holders (D) and the left and right refractory slabs (C). 3) Remove the rear refractory slab (E). To install new refractory slabs, follow the above steps in reverse. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 54: Appendix 6 - Installation Of Secondary Air Tubes And Baffle

    2) Using a power screwdriver and hex tip Remove the inner ash retainer and 5/16", remove the slab holder (D) and the floor refractory slab (A & B). the left refractory slab (C). HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 55 6) Repeat steps 4, 5 and 6 for the two tubes in the back then install the baffle. Then, install the two front tubes. To remove the tubes use the above steps reverse order. Note that secondary air tubes replaced without removing the baffle board. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 56: Appendix 7 - Air Control Snap Disc Replacement

    3. Remove the 4 bolts (E) holding the access door 4. Remove the thermodisc (G) by unscrewing the (F) with a 1/4" ratchet. 2 screws holding it in place. (H) HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 57: Appendix 8 - Electrical Wiring

    The ground (green or skinned wire) must be attached to the fireplace metal frame. See appendix 9 for corresponding part numbers. HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 58: Appendix 9 - Parts List

    3120-421 Top insulation (2 ½” thick) 3120-415 Refractory Brick Set 94-30200 Door Gasket Kit 94-58200 Blowers 7211-941 Air control handle cap 5410-040 Door glass kit 94-58205 Door latch kit 94-73200 HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...
  • Page 59 SAFETY RATING LABEL HearthStone Quality Home Heating Products, Inc ® WFP-100 Model 8420...

  • Page 60: 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: ...

This manual is also suitable for:

8420

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