4FOR THE INSTALLERThis appliance must be installed by qualified and licensed personnel. The installer should be guided bythe instructions furnished with the heater, and with local codes and utility company requirements. In theabsence of local codes, preference should be given to the National Fuel Gas Code, ANSI Z223.1-2002.INSTALLATIONS MUST COMPLY WITH:Local, state, provincial, and national codes, laws, regulations and ordinances.The latest version of the National Fuel Gas Code, ANSI Z223.1, from American Gas AssociationLaboratories, 8501 East Pleasant Valley Road, Cleveland, OH 44131.In Canada – CGA No. B149 (latest version), from Canadian Gas Association Laboratories, 55 ScarsdaleRoad, Don Mills, Ontario, Canada M3B 2R3. Also, Canadian Electrical Code C 22.1, from CanadianStandards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.Code for the installation of Heat Producing Appliances (latest version), from American InsuranceAssociation, 85 John Street, New York, NY 11038.The latest version of the National Electrical Code, NFPA No. 70.This product is for installation in closed loop systems ONLY! Use of this product in any manner otherthan described in this manual may result in premature product failure, substantial property damage,severe personal injury, or death. Damage or failure of this product (or the system in which it is installed)due to unauthorized use IS NOT COVERED BY WARRANTY.This manual must only be used by a qualified heating installer/service technician. Read all instructions inthis manual before installing. Perform steps in the order given. Failure to comply could result in severepersonal injury, death or substantial property damage.