C.R.S. § 8-20-415

(1) No legal action shall be commenced or maintained against any person engaged in this state in the business of selling at retail, supplying, handling, or transporting liquefied petroleum gas if the alleged injury, damage, or loss was caused by: (a) The alteration, modification, or repair of liquefied petroleum gas equipment or a liquefied petroleum gas appliance if the alteration, modification, or repair was done without the knowledge and consent of the liquefied petroleum gas seller, supplier, handler, or transporter; or (b) The use of liquefied petroleum gas equipment or a liquefied petroleum gas appliance in a manner or for a purpose other than that for which the equipment or appliance was intended and that could not reasonably have been expected. (2) A person who follows the applicable procedures established by the standards of the national fire code pursuant to section 8-20-405 as adopted by the director of the division of oil and public safety and rules promulgated pursuant to section 8-20-402 shall not be deemed to be grossly negligent or willful and wanton.