Emergency Shutdown; Prolonged Shutdown - Riello Array AR 3000 Installation And Operation Manual

1.2 Emergency shutdown

If overheating occurs or the gas supply fails to shut off, close the
manual gas shutoff valve (Fig. 1) located external to the unit.
NOTE: The Installer must identify and indicate the location of the
emergency shutdown.
Fig. 1 Manual Gas Shutoff Valve

1.3 Prolonged shutdown

After prolonged shutdown, it is recommended that the startup
procedures and the safety device test procedures of this manual
be performed, to verify all system-operating parameters.
If there is an emergency, turn off the electrical power supply to the
boiler and close the manual gas valve located upstream the
R
unit. The installer must identify the emergency shut-off device.
IMPORTANT - FOR MASSACHUSETTS INSTALLATIONS
Boiler Installations within the Commonwealth of Massachusetts
must conform to the following requirements:
− Boiler must be installed by a plumber or a gas fitter who is
licensed within the Commonwealth of Massachusetts.
− Prior to unit operation, the complete gas train and all con-
nections must be leak tested using a non-corrosive soap.
− The vent termination must be located a minimum of 4 feet
above grade level. If side-wall venting is used, the installa-
tion must conform to the following requirements extracted
from 248 CMR 5.08 (2):
(a) For all side wall horizontally vented gas fueled equipment in-
stalled 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 ter-
mination is less than seven (7) feet above finished grade in the
area of the venting, including but not limited to decks and porch-
es, 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 gasfitter shall ob-
serve 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 gasfitter shall observe that a
battery operated or hard wired carbon monoxide detector with an
alarm is installed on each additional level of the dwelling, build-
ing or structure served by the side wall horizontal vented gas fu-
eled equipment. It shall be the responsibility of the property own-
er to secure the services of qualified licensed professionals for the
installation 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 attic, the hard
wired carbon monoxide detector with alarm and battery back-
up may be installed on the next adjacent floor level.
b. 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)
days period, 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
eight (8) feet 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 detec-
tors and signage installed in accordance with the provisions of 248
CMR 5.08(2)(a)1 through 4.
(b) EXEMPTIONS:
The following equipment is exempt from 248 CMR 5.08(2)(a)1
through 4:
1. The equipment listed in Chapter 10 entitled "Equipment Not
Required To Be Vented" in the most current edition of NFPA 54
as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled
equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for res-
idential purposes.
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GENERAL