Install Instructions

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109837-01 - 5/20
PVCG-C
Installation, Operating & Service Manual
Appendix D: Special Requirements For Side-Wall Vented Appliances In
The Commonwealth of Massachusetts
IMPORTANT
The Commonwealth of Massachusetts requires compliance with regulation 248 CMR 4.00 and 5.00 for
installation of side-wall vented gas appliances as follows:
1. 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 fol-
lowing requirements must be satisfied:
a. If there is not already one 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).
b. A carbon monoxide detector shall be located in the room that houses the appliance or
equipment and shall:
i. 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;
ii. Have battery back-up power;
iii. Meet ANSI/UL 2034 Standards and comply with NFPA 720 (2005 Edition); and
iv. Have been approved and listed by a Nationally Recognized Testing Laboratory as
recognized under 527 CMR.
c. 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.
d. A metal or plastic identification plate shall be mounted at the exterior of the building, four feet
directly above the location of the 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”.
2. 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 above four feet above grade the
following requirements must be satisfied:
a. If there is not already one 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).
b. A carbon monoxide detector shall :
i. Be located in the room that houses the appliance or equipment
ii. Be either hard-wired or battery powered or both; and
iii. Comply with NFPA 720 (2005 Edition)
c. 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.