Installation Sheet

72 Rinnai Tankless Water Heater Installaon and Operaon Manual
FOR GAS MODELS SOLD IN MASSACHUSETTS
NOTICE BEFORE INSTALLATION:
This direct-vent appliance must be installed by a properly trained licensed professional. If you are not properly
trained, you must not install this unit.
IMPORTANT: In the State of Massachuses (248 CMR 4.00 & 5.00):
For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in
whole or in part for residenal purposes, including those owned or operated by the Commonwealth and where the
side wall exhaust vent terminaon is less than 7  above nished grade in the area of the venng, including but not
limited to decks and porches, the following requirements shall be sased:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the me of installaon of the side wall horizontal vented
gas fueled equipment, the installing plumber or gaser shall observe that a hard wired carbon monoxide
detector with an alarm and baery back-up is installed on the oor level where the gas equipment is to be
installed. In addion, the installing plumber or gaser shall observe that a baery operated or hard wired
carbon monoxide detector with an alarm is installed on each addional level of the dwelling, building or structure
served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property
owner to secure the services of qualied licensed professionals for the installaon of hard wired carbon
monoxide detectors
A. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an
ac, the hard wired carbon monoxide detector with alarm and baery back-up may be installed on the next
adjacent oor level.
B. In the event that the requirements of this subdivision can not be met at the me of compleon of installaon,
the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however,
that during said thirty (30) day period, a baery operated carbon monoxide detector with an alarm shall be
installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the
above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS cered.
3. SIGNAGE. A metal or plasc idencaon plate shall be permanently mounted to the exterior of the building at a
minimum height of 8  above grade directly in line with the exhaust vent terminal for the horizontally vented gas
fueled heang appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size,
"GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.”
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not
approve the installaon unless, upon inspecon, the inspector observes carbon monoxide detectors and signage
installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.
6.5 Massachuses State Gas Regulaons