Caution
The heat exchanger has a small amount of combustion chamber insulation (refractory), which
contains ceramic fibers. When exposed to extremely high temperatures, the ceramic fibers, which
contain crystalline silica, can be converted into cristobalite - which is classified as a possible
human carcinogen.
Care should be taken to avoid disturbing or damaging the refractory. If damage occurs, contact
the factory for directions. Avoid breathing and contact with skin and eyes and follow these
precautions:
1. For conditions of frequent use or heavy exposure, respirator protection is required. Refer
to the “NIOSH Guide to the Selection and Use of Particulate Respirators Certified under
42 CFR 84” for selection and use of respirators certified by NIOSH. For the most current
information, NIOSH can be contacted at 1-800-356-4676 or on the web at
www.cdc.gov/niosh.
2. Wear long sleeved, loose fitting clothing, gloves and eyes protection.
3. Assure adequate ventilation.
4. Wash with soap and water after contact.
5. Wash potentially contaminated clothes separately from other laundry and rinse washing
machine thoroughly.
6. Discard used insulation in an air tight plastic bag.
NIOSH stated first aid:
Eye contact - Irrigate and wash immediately.
Breathing - Provide fresh air.
Known Corrosive Contaminants to Avoid
Cements and glues
Paint or varnish removers
Adhesives used to fasten building products and other similar products
Chlorinated waxes or cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for snow and ice clearing
Sodium chloride or potassium chloride used for water softening
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Safety information
