E93.1801EN171 HWB installation manual
12
For installations in the Commonwealth of Massachusetts.
The following local requirements apply in addition to all other applicable NFPA requirements:
For direct- vent water heaters, mechanical-vent heating appliances or domestic hot water equipment, where the
bottom of the vent terminal and the intake is installed below four feet above grade the following requirements must
comply:
1) If not present on each floor level where there are bedrooms, a carbon monoxide detector and alarm must
be placed in a living area outside the bedrooms. The carbon monoxide detector and alarm must comply
with NFPA 720 (2005 Edition).
2)
A carbon monoxide detector and alarm shall be located in the room that houses the water heater
and/or equipment and shall:
a) Be powered by the same electrical circuit as the water heater and/or equipment such that only one
service switch services both the water heater 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 Lab as recognized under 527
CMR.
3) A product-approved vent terminal must be used, and if applicable, a product approved air intake must be
used. Installation shall be performed in strict compliance with the manufacturer’s instructions. A copy of the
installation instructions shall remain with the water heater and/or equipment at the completion of the instal-
lation.
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”.
For direct-vent water heaters mechanical-vent heating water heaters or domestic hot water equipment where the
bottom of the vent terminal and the intake is installed higher than four feet above grade the following requirements
must comply:
1) If not present on each floor level where there are bedrooms, a carbon monoxide detector and alarm must
be placed in a living area outside the bedrooms. The carbon monoxide detector and alarm must comply
with NFPA 720 (2005 Edition).
2)
A carbon monoxide detector shall:
a) Be located in the room where the water heater and/or equipment is located;
b) Be either hard-wired 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 water heater and/or equipment at the completion of the installation.
Summary of Contents for HWB-299
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Page 7: ...E93 1801EN171 HWB installation manual 7 1 SAFETY GUIDELINES...
Page 8: ...E93 1801EN171 HWB installation manual 8 CONSIGNES DE S CURIT...
Page 65: ...E93 1801EN171 HWB installation manual 65 Ladder Logic Diagram...
Page 66: ...E93 1801EN171 HWB installation manual 66 Electrical schematics...
Page 67: ...E93 1801EN171 HWB installation manual 67...
Page 119: ...E93 1801EN171 HWB installation manual 119 22 SPARE PARTS...
Page 120: ...E93 1801EN171 HWB installation manual 120 68 68 73...
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