From inside (document excerpt):
Door Clip for Upflow/Horizontal Non-Condensing Furnaces Cancels: IIK 330J-60-2 IIK 330J-60-3 5-97 Installation Instructions Part No. 324095-401 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since last issue. INTRODUCTION This furnace door clip permits non-condensing furnaces to be used in the horizontal position. The door clip must be used when the furnace is installed in the horizontal position to ensure the upper-combustion-louvered door remains in place during operation.
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Step 1–Installing Door Clip on Horizontal Furnaces 1. Locate plastic bag containing kit attached to literature assembly. 2. Remove upper top plate screw after furnace is installed in horizontal position. (See Fig. 1 or 2.) 3. Position nylon grommet (large face toward screw head) on screw removed from top plate. 4. Insert screw and grommet in door clip hole as shown in Fig. 1 or 2. 5. Attach door clip and screw to top plate. Do not operate the furnace in the horizontal position without this door clip in place and position such to retain the door in place. Failure to follow this CAUTION could result in nuisance interruptions of furnace operation due to blower door switch not being closed. This kit contains the following items: 6. Instruct owner/user to rotate clip for door removal. DESCRIPTION Door Clip Nylon Grommet Installation Instructions Table 1–Contents PART NO. 324095-403 324095-402 IIK 330J-60-3/ 58TMA-5SI QUANTITY GROMMET DOOR CLIP EXISTING FURNACE CASING SCREW EXISTING FURNACE CASING SCREW GROMMET DOOR CLIP TOP PLATE A97090 TOP PLATE A97089 Fig. 1–Furnace in Horizontal Right Orientation Fig. 2–Furnace in Horizontal Left Orientation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 535-848 Printed in U.S.A. Form 58TMA-5SI Pg 1 5-97 Replaces: 58DXT-2SI Tab 6a 8a DOOR CLIP INSTALLATION INSTRUCTIONS FOR HORIZONTAL APPLICATIONS Assembly Part No. 324095-401 1997 Carrier Corporation 330j603 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 535-848 Printed in U.S.A. Form 58TMA-5SI Pg 2 5-97 Replaces: 58DXT-2SI Tab 6a 8a …