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Owner's Manual
Residential Factory Built Fireplace
Operation • Maintenance • Installation
FOCUS 3600B
Keep these instructions for future use.
Industrial Chimney Company Inc.
400 J.-F. Kennedy, St-Jerome, QC, Canada, J7Y 4B7
Telephone: (450) 565-6336
www.icc-rsf.com
RSF-IIF3600B_C_2025-02

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  • Page 1 Owner's Manual Residential Factory Built Fireplace Operation • Maintenance • Installation FOCUS 3600B Keep these instructions for future use. Industrial Chimney Company Inc. 400 J.-F. Kennedy, St-Jerome, QC, Canada, J7Y 4B7 Telephone: (450) 565-6336 www.icc-rsf.com RSF-IIF3600B_C_2025-02...
  • Page 2 We have designed your new FOCUS 3600B to be easy to install, operate and maintain. It is in your best interest to become familiar with it. Study your manual to be sure that the installation is correct, then follow the guidelines for operation and maintenance.
  • Page 3: Safety First

    DO NOT BURN: DRIFTWOOD, TREATED WOOD, COAL, GARBAGE, OR PLASTIC Do not use construction scraps (e.g. 2x4 or plywood scraps) as your only supply of fuel as you can overheat and seriously damage the fireplace. See Fuel section for more details. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 4: General Specifications

    It has been tested under the following safety standards: CAN/ULC-S610, CAN/ULC-S627 and UL 127. MANDATORY FIREPLACE OPTIONS A choice of trim is required to complete the installation and finishing of the FOCUS 3600B Straight Trim (for heavier masonry) FO-F3600ST The Straight Trim projects straight out the front opening of the fireplace by ¾”...
  • Page 5 (unvented or vented) into this fireplace. Do not install a gas log lighter because the heat produced by the fireplace will permanently damage the gas log lighter. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 6: Unit Dimensions And Clearances

    Distance from the side standoff to the side of the firebox opening: ” For the mantel shelf clearance Distance from the fireplace base to the top of the firebox opening: ” Figure 1 Unit Dimensions FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 7 Minimum height of a combustible mantel shelf above the top of the firebox opening: to the bottom of the combustible mantel (refer to the “MANTEL” See Table 2 section for particulars) Maximum depth of a combustible mantel post See Table 3 FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 8: General Installation

    This will reduce the possibility of scratches, vandalism, or damage to the finish caused by drywall dust, muriatic acid, plaster, cement, paint or any other harmful spray or liquid. Flashing and Roof Radiation Shield *see Chimney Installation, paragraph 4 & 5 Figure 3 FOCUS 3600B General Installation FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 9 We recommend that you take the time to plan your entire installation (fireplace, chimney, and options) before beginning the actual installation (refer to Figure 3). Your FOCUS 3600B fireplace may be installed in many different ways (see Figure 4) without any special floor reinforcement.
  • Page 10: Ceiling Clearance

    DO NOT fill the gap between the fireplace and the standoff with insulation or any other material; it will be covered with the finishing material. NOTHING CAN BE PLACED BELOW THE HEADER SUPPORTS OF THE TOP STANDOFF WHETHER COMBUSTIBLE OR NOT. THE SPACE MUST REMAIN EMPTY. Figure 5 Top Standoff Installation FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 11: Outside Air Duct

    The use of outside air is not required unless specified by local building codes or it is installed in a mobile home. The FOCUS 3600B includes a rotating elbow that connects to the bottom of the unit and can exit in any direction.
  • Page 12: Finishing Around The Fireplace

    Figure 8 Screw Locations The minimum size of a non-combustible facing is shown in Figure 9. Figure 9 Minimum Requirements for Non-combustible Facing FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 13 Mandatory Trim Installation A choice of trim is required to complete the finishing of the FOCUS 3600B. You have two choices in trim, both trims install in the same manner using the rivets provided. Removing the door may be necessary to install all the rivets provided (see Figure 10).
  • Page 14 This fireplace is certified for use with 6" ICC Model EXCEL chimney only. Please refer to Table 1 (D-E) for the minimum and maximum chimney heights permitted with the FOCUS 3600B fireplace. We recommend that the minimum height be increased by approximately 6" for every 1000' elevation above sea level.
  • Page 15: Chimney Installation

    Install the fireplace and chimney as described earlier. When you require an elbow, proceed as follows: 1. Install the required elbow. Turn it in the desired direction, and fasten it to the chimney length with the three metal screws provided at the joints. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 16 Roof Support Radiation Shield 3 Metal Screws in Each Joint * Refer to the text to determine the appropriate flashing Figure 14 Offset Chimney Installation Example Figure 15 Offset Chimney Through a Wall Example FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 17: Chase Enclosure

     REMEMBER: Check local codes concerning installation requirements and restrictions in your area. MASONRY CHIMNEY Installing your FOCUS 3600B fireplace with a masonry chimney still requires using EXCEL chimney from the top of the fireplace to where it will connect to a listed liner that will *Refer to text to determine the appropriate flashing run up inside the masonry chimney (see Figure 17).
  • Page 18: Hearth Extension

    Refer to Table 1 (G-H) for the depth and width that the hearth protection should extend beyond the front and both sides of the door opening (see Figure 1). There is no minimum thickness required for the hearth extension. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 19 BENEATH THE HEARTH EXTENSION If the FOCUS 3600B is installed on a non-combustible floor the spark guard specified below is not required. Install the spark guard provided (5" x 36" piece of sheet metal) halfway under the fireplace and halfway under the hearth extension and centered on the door opening.
  • Page 20: Mobile Home Requirements

    3. Then install the bottom refractory brick (5). 4. Finally, install the two front refractory bricks (6, 7). These refractory bricks have been designed specifically for the FOCUS 3600B and no modifications are required to Figure 21 Refractory Bricks Installation ensure a proper fit.
  • Page 21: Operation

    You can order a new door gasket from your retailer with the part code FO-GRK5. Outside Air Control The FOCUS 3600B is designed to use outside air for combustion. A shutter located behind the bottom louver will open or close the flow of air from outside into the fireplace.
  • Page 22 Figure 24 Outside Air Control Operation ASH LIP The Focus 3600B includes a removable ash lip intended to prevent ashes from accumulating at the front of the fireplace. To remove or insert the ash lip, simply place it on an angle and...
  • Page 23 2115, Processed Solid Fuel Firelogs and Firestarters. Refer to the firelog warnings and caution markings on packaging prior to use. ❖ WARNING: Burn dry wood only. Do not burn: driftwood, treated wood, coal, garbage, or plastic. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 24: First Fires

    Weak draft can result in smoke entering the room and difficulty lighting or operating the fireplace. Weak draft is often incorrectly associated as a blockage in the air intake for the fireplace. Adding chimney height is the most common solution. See Table 4 for minimum chimney height recommendations. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 25: Maintenance

    Fast burning fires (lots of air) go through much more wood than slow burning fires. To get the most out of your FOCUS 3600B fireplace, adjust the combustion air control lever at the appropriate time. If the fire seems to be burning too quickly, turn the air down. If the fire is smoldering and there are no visible flames, turn the air up.
  • Page 26: Disposal Of Ashes

    Never clean the glass while it is hot, a serious burn can result. There are a number of excellent wood stove glass cleaners available which are far superior to regular glass and oven cleaners for wood stove applications. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 27: Door Adjustment

    Repeat this procedure along all sides of the door. The most important factor for controlling the burn rate of the FOCUS 3600B is a good seal on the door gasket. If the door gasket is worn or damaged to the point where the seal is not adequate as described above, then remove and replace the gasket.
  • Page 28: Listing Label

    LISTING LABEL The listing label is glued to the bottom of the fireplace. Just remove the bottom louver; the listing label is below the floor shield. FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 29: Complete Options List

    Insulated Duct 5 feet FO-VGC Contemporary Grill for FO-V2 FO-GRK5 Gasket Replacement Kit ✓ FO-HB9 Internal Blower Kit FO-FDM6 Masonry Chimney Adapter 6" ✓ FO-HD Heat Dump Kit FO-INT Outside Air Kit 4" Diameter FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 30: Replacement Parts

    REPLACEMENT PARTS Use only genuine RSF parts. The use of any substitutes will void the warranty and may put your safety at risk. Index - Focus 3600B part codes FOCUS 3600B FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 31 FOCUS 3600B FOCUS 3600B Owner's Manual RSF Woodburning Fireplaces...
  • Page 32: Limited Warranty

    This warranty does not apply if the installation does not conform to the installation requirements in the owner’s manual. RSF Woodburning Fireplaces is free of liability for any damages caused by the appliance, as well as material and labor charges incurred in the removal or re-installation of any RSF Woodburning Fireplaces fireplace under this warranty.

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