From inside (document excerpt):
Heat Exchanger Cell Kit Cancels: New IIK-310A-45-6 6-02 Installation Instructions Part No. 326600-751 NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained personnel should install or service heating equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils, or cleaning and replacing filters.
All other operations should be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to the unit. Recognize safety information. This is the safety-alert symbol. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. Follow all safety codes. Wear safety glasses and work gloves. Have a fire extinguisher available. INTRODUCTION This instruction covers the installation of a heat exchanger cell on non-condensing, 33.3-in. high, mid-efficiency hot surface igniter units. The heat exchanger cell should be replaced when corrosion has created visible surface damage to the heat exchanger cell, excessive soot or scale is present in the cell or if functionality of the cell has been compromised. There is one heat exchanger cell in each kit and an additional kit will be required for each heat exchanger cell replaced. WARNING: Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide poisoning, explosion, fire, electrical shock, or other conditions which could result in personal injury or death. Consult your distributor or branch for information or assistance. The qualified installer or agency must use only factory-authorized kits or accessories when servicing this product. Failure to follow instructions could result in serious injury or property damage. DESCRIPTION AND USAGE The heat exchanger cell replacement kit can be utilized to replace a defective heat exchanger cell. This kit contains the following items: Table 1-Kit Contents Kit Contents Qty. Heat Exchanger Cell Panel 1 Cell Panel Support Gasket 2 Top Insulation Strip 1 Screws 9 Installation Instructions Inducer Assembly Gasket Cell Inlet Gasket Cell Outlet Gasket 1 In some situations, a new heat exchanger cell panel may be required and must be ordered separately. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 101 Catalog No. 535-80068 Printed in U.S.A Form 58ST-5SI Pg. 1 6/02 Replaces: New INSTALLATION NOTE: A releasing agent such as PAM cooking spray or equivalent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons or inadequate seal may occur) and RTV sealant (G.E. 162, G.E. 6702, or Dow-Corning 738) are needed before starting installation.