Monessen Hearth mhsc eyf18 User Manual

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This product must be installed by a licensed plumber or gas fitter 
when installed within the Commonwealth of Massachusetts.
Any residence with a direct vent product must have a CO detector 
installed in the residence.
Installation of the fireplace or vented gas log in the State of 
Massachusetts requires the damper to be permanently removed or 
welded in the fully open position.
In addition, a naturally vented gas log may not be installed in a 
bedroom or bathroom in the State of Massachusetts.
Flex line installation must not exceed 36 inches and must have a 
T shutoff valve. 

This product must be installed by a licensed plumber or gas fitter 
when installed within the Commonwealth of Massachusetts.
In addition, vent free products may not be installed in a bedroom or 
bathroom regardless of size or type in the State of Massachusetts.
Flex line installation must not exceed 36 inches and must have a 
T shutoff valve.

(2) 

Revise 10.8.3 by adding the following additional 

requirements:
(a)  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 seven (7) feet 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 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 can 

not 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 
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 detectors 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 
residential purposes.
(c)  Manufacturer requirements — Gas Equipment Venting 
System Provided.  When the manufacturer of Product Approved 
side wall horizontally vented gas equipment provides a venting 
system design or venting system components with the equipment, 
the instructions provided by the manufacturer for installation of 
the equipment and the venting system shall include:
1. Detailed instructions for the installation of the venting system 
design or the venting system components; and
2. A complete parts list for the venting system design or venting 
system.
(d)  Manufacturer requirements — Gas Equipment Venting 
System Not Provided. When the manufacturer of a Product 
Approved side wall horizontally vented gas fueled equipment 
does not provide the parts for venting the flue gases, but identifies 
“special venting systems,” the following requirements shall be 
satisfied by the manufacturer:
1. The referenced "special venting system" instructions shall be 
included with the appliance or equipment installation instructions; 
and
2. The “special venting systems” shall be Product Approved by the 
Board, and the instructions for that system shall include a parts list 
and detailed installation instructions.
(e)  A copy of all installation instructions for all Product Approved 
side wall horizontally vented gas fueled equipment, all venting 
instructions, all parts lists for venting instructions, and/or all 
venting design