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7. Appendices <br /> wired carbon monoxide detector with an <br /> Topics . alarm is installed on each additional level of <br /> the dwelling, building or structure served by <br /> • Massachusetts State Gas Regulations the side wall horizontal vented gas fueled <br /> Wiring Diagram equipment. It shall be the responsibility of <br /> • Ladder Diagram the property owner to secure the services <br /> of qualified licensed professionals for the <br /> Pressure Drop and Water Flow Curves installation of hard-wired carbon monoxide <br /> • Guidelines for Additional Temperature detectors. <br /> Controllers J.In the event that the side wall, horizontally <br /> vented gas fueled equipment is installed <br /> in a crawl space or an attic, the hard-wired <br /> carbon monoxide detector with alarm and <br /> 7.1 Massachusetts State <br /> battery back-up may be installed on the <br /> Gas Regulations next adjacent floor level. <br /> K. In the event that the requirements of this <br /> subdivision cannot be met at the time of <br /> completion of installation, the owner shall <br /> For Gas Models Sold in Massachusetts have a period of thirty (30)days to comply <br /> with the above requirements; provided, <br /> NOTICE BEFORE INSTALLATION: however, that during said thirty (30) day pe- <br /> riod, a battery operated carbon monoxide <br /> This direct-vent appliance must be installed by a detector with an alarm shall be installed. <br /> properly trained licensed professional. If you are <br /> not properly trained, you must not install this unit. 2. APPROVED CARBON MONOXIDE <br /> DETECTORS. Each carbon monoxide <br /> IMPORTANT: In the State of Massachusetts detector as required in accordance with the <br /> (248 CMR 4.00 &5.00): above provisions shall comply with NFPA 720 <br /> and be ANSI/UL 2034 listed and IAS certified. <br /> For all side wall horizontally vented gas fueled 3. SIGNAGE.A metal or plastic identification <br /> equipment installed in every dwelling, building or plate shall be permanently mounted to the <br /> structure used in whole or in part for residential exterior of the building at a minimum height <br /> purposes, including those owned or operated of 8 ft above grade directly in line with the <br /> by the Commonwealth and where the side wall exhaust vent terminal for the horizontally <br /> exhaust vent termination is less than 7 ft above vented gas fueled heating appliance or <br /> finished grade in the area of the venting, including equipment. The sign shall read, in print size <br /> but not limited to decks and porches, the following no less than one-half(1/2) inch in size, "GAS <br /> requirements shall be satisfied: VENT DIRECTLY BELOW. KEEP CLEAR OF <br /> 1. INSTALLATION OF CARBON MONOXIDE ALL OBSTRUCTIONS." <br /> DETECTORS.At the time of installation of 4. INSPECTION. The state or local gas <br /> the side wall horizontal vented gas fueled inspector of the side wall horizontally vented <br /> equipment, the installing plumber or gas gas fueled equipment shall not approve <br /> fitter shall observe that a hard-wired carbon the installation unless, upon inspection, <br /> monoxide detector with an alarm and battery the inspector observes carbon monoxide <br /> back-up is installed on the floor level where detectors and signage installed in accordance <br /> the gas equipment is to be installed. In with the provisions of 248 CMR 5.08(2)(a)1 <br /> addition, the installing plumber or gas fitter through 4. <br /> shall observe that a battery operated or hard <br /> Rinnai Tankless Water Heater Installation and Operation Manual 86 <br />