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Product Description | 7secure the services of qualified licensed professionals for theinstallation of hard wired carbon monoxide detectors.– In the event that the side wall horizontally vented gas fueledequipment is installed in a crawl space or an attic, the hard wiredcarbon monoxide detector with alarm and battery back-up may beinstalled on the next adjacent floor level.– In the event that the requirements of this subdivision cannot be metat the time of completion of installation, the owner shall have aperiod of thirty (30) days to comply with the above requirements;provided, however, that during said thirty (30) day period, abattery operated carbon monoxide detector with an alarm shall beinstalled.• APPROVED CARBON MONOXIDE DETECTORS. Each carbonmonoxide detector as required in accordance with the aboveprovisions shall comply with NPA 720 and be ANSI/UL 2034 listedand IAS certified.• SIGNAGE. A metal or plastic identification plate shall be permanentlymounted to the exterior of the building at a minimum height of eight(8) feet above grade directly in line with the exhaust vent terminal forthe horizontally vented gas fueled heating appliance or equipment.The sign shall read, in print size no less than one-half (½) inch in size,“GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALLOBSTRUCTIONS”.• INSPECTION. The state or local gas inspector of the side wallhorizontally vented gas fueled equipment shall not approve theinstallation unless, upon inspections, the inspector observes carbonmonoxide detectors and signage installed in accordance with theprovisions of 248 CRM 5.08(2)(a) 1 through 4.(b) EXEMPTIONS: The following equipment is exempt from 248 CRM5.08(2)(a) 1 through 4:• The equipment listed in Section 10 entitled “Equipment Not RequiredTo Be Vented” in the most current edition of NFPA 54 as adopted bythe board; and• Product Approved side wall horizontally vented gas fueled equipmentinstalled in a room or structure separate from the dwelling, building orstructure used in whole or in part for residential purposes.(c) MANUFACTURERS REQUIREMENTS - GAS EQUIPMENT VENTINGSYSTEM REQUIRED. When the manufacturer of Product Approved sidewall horizontally mounted gas equipment provides a venting systemdesign or venting system components with the equipment, theinstructions provided by the manufacturer for the installation of theequipment and venting shall include:• Detailed instructions for the installation of the venting system or theventing system components; and• A complete parts list for the venting system design or venting system.(d) MANUFACTURERS REQUIREMENTS - GAS EQUIPMENT VENTINGSYSTEM NOT PROVIDED. When the manufacturer of Product Approvedside wall horizontally vented gas fueled equipment does not provide theparts for the venting of flue gases, but identifies “special ventingsystems”, the following requirements shall be satisfied by themanufacturer:• The referenced “special venting systems” shall be included with theappliance or equipment installation instructions; and• The “special venting systems” shall be Product Approved by theBoard, and the instructions for that system shall include a parts listand detailed installation instructions.(e) A copy of all instructions for all Product Approved side wallhorizontally vented gas fueled equipment, all venting instructions, allparts lists for venting instructions, and/or venting design instructionsshall remain with the appliance or equipment at the completion of theinstallation.2.4 Suitable fuelsPermissible fuels• Natural gas from the public gas supply in accordance with nationalregulations with a total sulphur content < 15ppm.• LP in accordance with national regulations with a content ofelementary sulphur < 1.5 ppm and volatile sulphur < 50 ppm.• Ultra Low Sulphur Diesel in accordance with national regulations witha content of elementary sulphur < 15 ppm (for use as back-up fuel incondensing operation).• Heating oil type 2 when boiler return temperature is not lower than140 degrees Fahrenheit; non-condensing operation (for use as backupfuel only). See the warranty statement for additional details.NOTICE:▶ Do not use gasoline, crankcase drainings, or any oilcontaining gasoline.The boiler must only be operated with the specifiedfuels.Only burners that are suitable for the specified fuels maybe used.Observe the manufacturer's burner selection list and theburner manufacturer's instructions.SB625WS/SB745WS6 720 805 218 (2013/02)