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Rinnai Tankless Water Heater Installation and Operation Manual
7.
7. Appendices
Appendices
Topics in this section
•
Massachusetts State Gas Regulations
•
Wiring Diagram
•
Ladder Diagram
•
Pressure Drop and Water Flow Curves
•
Guidelines for Additional Temperature
Controllers
7.1 Massachusetts State
Gas Regulations
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 Massachusetts
(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 residential
purposes, including those owned or operated
by the Commonwealth and where the side wall
exhaust vent termination is less than 7 ft above
finished grade in the area of the venting, including
but not limited to decks and porches, the following
requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE
DETECTORS. At the time of installation of
the side wall horizontal vented gas fueled
equipment, the installing plumber or gas
fitter shall observe that a hard-wired carbon
monoxide detector with an alarm and battery
back-up is installed on the floor level where
the gas equipment is to be installed. In
addition, the installing plumber or gas fitter
shall observe that a battery operated or hard
wired carbon monoxide detector with an
alarm is installed on each additional 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
a trained and qualified professional for the
installation of hard-wired carbon monoxide
detectors.
F. In the event that the side wall, horizontally
vented gas fueled equipment is installed
in a crawl space or an attic, the hard-wired
carbon monoxide detector with alarm and
battery back-up may be installed on the
next adjacent floor level.
G. In the event that the requirements of this
subdivision cannot be met at the time of
completion of installation, the owner shall
have a period of thirty (30) days to comply
with the above requirements; provided,
however, that during said thirty (30) day pe
-
riod, a battery 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 certified.
3. SIGNAGE. A metal or plastic identification
plate shall be permanently mounted to the
exterior of the building at a minimum height
of 8 ft above grade directly in line with the
exhaust vent terminal for the horizontally
vented gas fueled heating 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 installation unless, upon inspection, the
inspector observes carbon monoxide detectors
and signage installed in accordance with the
provisions of 248 CMR 5.08(2)(a)1 through 4.
