Installations In The State Of Massachusetts - Williams 1403821 Owner's Manual

Installations in the State of Massachusetts

All installations in the State of Massachusetts must use the following requirements when installing, maintaining or operating direct-vent
propane or natural gas-fired space furnaces. For direct-vent appliances, mechanical-vent heating appliances or domestic hot water
equipment, where the bottom of the vent terminal and the air intake is installed below four feet above grade the following requirements
must be satisfied:
1. If there is not one already present, on each floor level where there are bedroom(s), a carbon monoxide detector and alarm shall be
placed in the living area outside the bedroom(s). The carbon monoxide detector shall comply with NFPA 720 (2005 Edition).
2. A carbon monoxide detector shall be located in the room that houses the appliance or equipment and shall:
a. Be powered by the same electrical circuit as the appliance or equipment such that only one service switch services both the
appliance and the carbon monoxide detector.
b. Have battery back-up power;
c. Meet ANSI/UL 2034 Standards and comply with NFPA 720 (2005 Edition); and
d. Have been approved and listed by a Nationally Recognized Testing Laboratory as recognized under 527 CMR.
A carbon monoxide detector shall:
a. Be located in the room that houses the appliance or equipment;
b. Be either hardwired or battery powered or both; and
c. Shall comply with NFPA 720 (2005 Edition).
3. A product approved vent terminal must be used, and if applicable, a product approved air intake must be used. Installation shall be
in strict compliance with the manufacturer's instructions. A copy of the installation instructions shall remain with the appliance or
equipment at the completion of the installation.
4. A metal or plastic identification plate shall be mounted at the exterior of the building, four feet directly above the location of vent
terminal. The plate shall be of sufficient size to be easily read from a distance of eight feet away, and read "Gas Vent Directly
Below".
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