department of fire services - mass.gov€¦ · department of fire services division of fire safety...

DEPARTMENT OF FIRE SERVICES Division of Fire Safety

Smoke, Heat and Carbon Monoxide Alarm Inspection Requirements for One and Two Family Dwellings

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Introduction:

Introduction

Exits

Bathrooms

Considerations (sign-in, phones, conversations)

Questions

2


Presentation Outline:

Introduction

Smoke/heat detection requirements:

- Brief review of applicable MGLs

- Prior to 1975 requirements

- Previous MSBC edition requirements

- Current MSBC requirements (8th Edition)

- Current MSBC requirements for renovations

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Presentation Outline:

CO detection requirements:

- Brief review of applicable MGLs

- Prior to 2008 requirements

- Previous MSBC requirements (7th Edition)

- Current MSBC requirements (8th Edition)

Special topics

Questions

4


Presentation Declarations:

This presentation provides a basic summary of the requirements for the smoke, heat, and CO detection in one and two family dwellings.

Discussion of the use of the term ‘alarm’ and ‘detector’ in the presentation.

Discussion of the use of the term ‘system’ in the presentation.

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One should always review the actual code to ensure the proper requirements are enforced

Make sure to notify/consult your local building or electrical official if questions arise with their code

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Let’s to do it right….

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Smoke, Heat and CO Alarm Inspection Requirements

Detached One and Two Family Dwellings Only:

Single Family: Duplexes:

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Smoke, Heat and CO Alarm Inspection Requirements

The presentation does NOT cover multiple family dwellings:

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Smoke Detector Requirements for One and

Two Family Dwellings

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MGL c. 148 s. 26F

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MGL c. 148 s. 26F

Residential buildings or structures; equipping with

smoke detectors upon sale or transfer

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MGL c. 148 s. 26F

All buildings or structures occupied in whole or in part for residential purposes and not regulated by M.G.L. c. 148, s. 26A, 26B or 26C shall, upon the sale or transfer of such building or structure, be equipped by the seller with approved smoke detectors as provided in M.G.L. c. 148, s. 26E.

The head of the fire department shall enforce the provisions of this section.

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What are s. 26A, 26B and 26C?

Section 26A: - Sprinkler systems in high-rises

Section 26B: - Residential buildings must have an automatic fire

warning system as required in the Massachusetts State Building Code (MSBC – 780 CMR)

Section 26C: - Smoke/heat detectors in apartment houses containing 6

or more dwelling units, hotels, boarding or lodging houses, or family hotels

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MGL c. 148 s. 26B

Every building ≤ 70’ in height above the mean grade erected or substantially altered to be occupied for residential purposes shall be protected with an approved automatic fire warning system in accordance with the provisions of the state building code. Such system shall include the features of automatic smoke detection in conjunction with the approved fire detection devices.

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MGL c. 148 s. 28A

The head of the fire department or any person designated by him who, in the performance of his official duties, observes any condition which he believes to be a violation of any provision of the MSBC or any amendments thereto, shall report the same to the authority charged with the enforcement of such provision.

- Mirrored in 527 CMR 1.00: 1.7.6.1.2

- Put it into writing

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Mass. State Building Code

MSBC was first adopted on January 1st, 1975

Since 1975 there has always been a MSBC in effect

- Current Edition is the 8th Edition

Only residential structures built prior to 1975, and not substantially altered to

constitute new are subject to MGL c. 148 s. 26E, 26F and 26F½

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Smoke Requirements

Pre-1975 Dwellings

*Not substantially altered to constitute new.*

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MGL c. 148 s. 26F

All buildings or structures occupied in whole or in part for residential purposes and not regulated by sections 26A, 26B or 26C shall, upon the sale or transfer of such building or structure, be equipped by the seller with approved smoke detectors as provided in MGL c. 148 s. 26E.

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MGL c. 148 s. 26E (a)

All one and two family dwellings occupied in whole or in part for residential purposes shall be equipped with approved smoke detectors. - An approved monitored battery powered smoke detector

- An approved primary power smoke detector

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MGL c. 148 s. 26E (a)

Owners of such buildings or structures shall install approved smoke detectors:

- On each level of habitation

- On the basement level

- Outside each separate sleeping area

- On the ceiling of each stairway leading to the floor above, near the base of, but not within each stairway

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MGL c. 148 s. 26D

As used in this section and sections 26E and 26F the following terms shall have the following meanings:

Separate sleeping area:

The area or areas of the dwelling unit in which the bedrooms, or sleeping rooms, are located.

Bedrooms, or sleeping rooms, separated by other use areas such as kitchens or living rooms, but not bathrooms, shall be considered as separate sleeping areas.

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MGL c. 148 s. 26D


Approved monitored battery power smoke detector:

A smoke detector which is activated by a battery power source provided that the battery is monitored

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MGL c. 148 s. 26D


Approved primary power smoke detector:

A smoke detector which is activated by being permanently wired to a source of AC electric power or connected to a source of AC electric power by an UL approved cord with a strain relief and plug retainer

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DEPARTMENT OF FIRE SERVICES Division of Fire Safety 25

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527 CMR 1.00 -

The Massachusetts Comprehensive Fire Code

(revised October 7th, 2016)

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Smoke and CO Alarm Requirements

Pre-1975 Dwellings

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Not these Homes!!!

(Post-1975 Dwellings)


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527 CMR 1.00

Smoke Alarm Changes in 13.7:

- Concern with continued fire deaths

- BFPR established Smoke Alarm Task Group

- Task Group provided recommendations

- BFPR voted to implement on December 1st, 2016

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527 CMR 1.00

New 13.7:

- Only affects homes built to 1975

No alterations/modifications that would require compliance with 780 CMR smoke requirements

- Doesn’t affect device location

Affects batteries used for new devices

Affects detection technology for new devices

- Working devices within the device’s life span are allowed to stay

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527 CMR 1.00

Term ‘shall be permitted’ used in the revised 13.7

Shall be read as ‘shall be allowed’

- No discretion

- No FD permit needed

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527 CMR 1.00

13.7.4 – Smoke Detection

13.7.4.1 - Where fire warning equipment is required… equipment shall be installed in accordance with:

- Massachusetts Electrical Code (527 CMR 12.00)

- NFPA 72 (2010 Edition)

- Section 13.7

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527 CMR 1.00

13.7.4.3 – Heat Detection

13.7.4.3.1 - The FD shall be permitted to require the installation and interconnection of heat detectors in unheated open rear porches and stairways

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No Stairs


527 CMR 1.00

13.7.5 – Primary Power Source

13.7.5.1 - Smoke alarms/detectors, and carbon monoxide alarms shall be permitted to have battery power as a primary source unless otherwise prohibited

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527 CMR 1.00

13.7.5.1.1 – Nonrechargeable, Nonreplaceable Battery Power Alarm/Detectors:

(1) Photoelectric technology required*

(2) Silencing means required

- Silence button on alarms

- Silence button in panel for detectors

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527 CMR 1.00


(3) Equipped with a nonrechargeable battery

(4) Equipped with a nonreplaceable battery

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527 CMR 1.00


(5) At least 10 years of battery life, including testing

(6) Combo alarms (smoke/CO) must be capable of powering the unit for its service life, including testing

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527 CMR 1.00


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©


527 CMR 1.00

So many choices available:

Must be understanding and helpful…

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527 CMR 1.00

13.7.5.1.2 – Battery Powered with Network Technology (wireless):

(1) Photoelectric technology required*

(2) All alarms and detectors must have at least 1 year of battery life, including weekly testing

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527 CMR 1.00


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527 CMR 1.00


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Other Technologies

13.7.5.1.3.1 – Where devices in the above sections have been installed and placed:

(1) Other technologies that are part of the same unit shall be permitted with photoelectric technology

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Non-required Devices

13.7.5.1.3.1 – Where devices in the above sections have been installed and placed:

(2) Non-required devices may be connected with required devices provided such devices have been installed in accordance with NFPA 72 and their listing.

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Types of Devices

13.7.5.1.4.1 – The following types of devices are allowed:

(1) Single/multiple station alarm

(2) Detector

(3) One unit with 2 or more technologies

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Device Requirements

13.7.5.1.4.2.1 –

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Device Standard

Single/multiple smoke alarms ANSI/UL 217

Smoke detectors ANSI/UL 268

Heat alarms ANSI/UL 539

Heat detectors ANSI/UL 521

Combination alarms ANSI/UL 217 & ANSI/UL 2034

Combination detectors ANSI/UL 268 & ANSI/UL 2075


Combo Detector Requirements

13.7.5.1.4.2.1(7) – Both voice and tone alarm required; unless the system employs the following:

- Device produces distinctive audible and visual alarm signal for smoke and CO per NFPA 72 and NFPA 720

- The control unit or annunciator displays a distinctive alphanumeric message for smoke and CO

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Table 13.7A

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Table 13.7A

Device:

Smoke alarms/detectors shall have photoelectric technology

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Table 13.7A

Placement:

Smoke alarms/detectors shall be placed on:

- On every habitable level


- On the ceiling at the base of each stairway

- On the ceiling outside of each separate sleeping area

- In common areas on ceilings

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Table 13.7A

Placement:

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Table 13.7A

Power Supply:

Shall be either battery or primary power.

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Table 13.7A

Power Supply:

Battery power alarms shall meet 13.7.5.1.1

- Photoelectric

- Provided with silence button

- Nonrechargeable, nonreplaceable battery

- At least a 10 year battery life

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Table 13.7A

Type of Device:

- Single station alarm

- Multiple station alarm

- Detector

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Table 13.7A

Type of Technology:

- Photoelectric required

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Table 13.7A

Wiring:

- Interconnection not required

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Pre-1975 Dwellings

Smoke Detection Summary

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Pre-1975 Dwellings


Smoke detection shall be installed on: - On each level of habitation




- In common areas on ceilings

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Pre-1975 Dwellings


Smoke detection shall be photoelectric

- Other technology allowed to accompany the photoelectric

Battery power smoke alarms shall have:

- Provided with silence button

- Nonrechargeable, nonreplaceable battery

- At least a 10 year battery life including testing

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Pre-1975 Dwellings


Battery powered with network technology allowed

- Shall be photoelectric

- At least 1 year of battery life including testing

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Pre-1975 Dwellings

Smoke Detection Examples

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Smoke Example

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- Smoke (Photo)


Smoke Example

- Smoke (Photo)

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Smoke Example

- Smoke (Photo)

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Smoke Example

- Smoke (Photo)

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Basement

Basement Toy Room

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Smoke Example

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- Smoke (Photo)


Smoke Example: First Floor (1)

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- Smoke (Photo)



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- Smoke (Photo)



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- Smoke (Photo)


Smoke Example: Second Floor (1)

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- Smoke (Photo)


Smoke Example: Second Floor (2)

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- Smoke (Photo)


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- Smoke (Photo)

Smoke Example:


Smoke Detection Requirements

Dwellings permitted between 1975 and

August 27th, 1997


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1st Edition of the MSBC: - One and two family dwellings permitted after

January 1st, 1975 and prior to January 9th, 1975

- Not substantially altered to constitute new

74


Smoke Detector Requirements

2nd Edition of the MSBC: - One and two family dwellings permitted from January 9th, 1975 and to June 1st, 1979


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Smoke Detection Requirements 2nd Edition of the MSBC

Smoke detectors shall be installed on: - On each level of habitation.

- On the basement level.

- Outside each separate sleeping area.

- On the ceiling of each stairway leading to the floor above, near the base of, but not within each stairway.

- For each 1,200 ft2 of area or part thereof for any level.

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Smoke Detection Requirements 2nd Edition of the MSBC

Smoke detection shall be: - Not installed located in or within 6’ of a kitchen,

cooking area or garage.

- Ceiling mounted (except for mobile homes).

- All smoke detectors must be interconnected.

- The power supplied from a permanently wired connection to an AC primary source of power or monitored batteries.

- The power shall be from a single branch circuit serving a habitable area.

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3rd Edition of the MSBC:

- One and two family dwellings permitted from June 1st, 1979 and to September 1st, 1980.

- Not substantially altered to constitute new.

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Smoke Detection Requirements 3rd Edition of the MSBC

Smoke detection shall be installed on: - On each level of habitation.



• These smoke detectors can meet the requirements for the detectors required on the level.



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Smoke Detection Requirements 3rd Edition of the MSBC

Smoke detection shall have:

- The power supplied from a permanently wired connection to an AC primary source of power or monitored batteries.


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4th Edition of the MSBC: - One and two family dwellings permitted from

September 1st, 1980 to March 1st, 1991


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Smoke Detection Requirements 4th Edition of the MSBC

Smoke detection shall be installed on: - On each level of habitation



• These smoke detectors can meet the requirements for the detectors required on the level


- For each 1,200 ft2 of area or part thereof for any level

82



Smoke detection shall be: - The power supplied from a permanently wired connection to an AC primary source of power or monitored batteries.


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March 1st, 1991 and to August 27th, 1997


84



Smoke detection shall be installed on: - On each level of habitation.



• These detectors can meet the requirements for the detectors required on the level.



85



Smoke detection shall be: - The power supplied from a permanently wired connection to an AC primary source of power or monitored batteries.


86


Smoke Detection Summary Dwellings permitted from 1975 and prior to August

27th, 1997

Smoke detection shall be installed on:

- On each level of habitation.





87


Smoke Detection Summary Dwellings permitted from 1975 and prior to August

27th, 1997

Smoke detection shall be: - The power supplied from a permanently wired connection to an AC primary source of power

- The power shall be from a single branch circuit serving a habitable area

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6th Edition MSBC Dwellings permitted from August 27th, 1997

and prior to March 1st, 2009


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6th Edition of the MSBC: - One and two family dwellings permitted from August 28th, 1997 and prior to March 1st, 2009


90



Smoke detection shall be installed on: - In each habitable story of a dwelling unit

- In each the basement and cellar

- In the immediate vicinity of bedrooms

- In all bedrooms


91



Smoke detection shall be: - Interconnected with all other required smoke

detection in the dwelling

- Photoelectric, if located within 20’ of a kitchen or a bathroom containing a tub or shower

92



Smoke detection shall have: - Secondary power supplied from monitored

batteries

- The power supplied from a permanently wired connection to an AC primary source of power.

- The power for single and multiple station smoke alarms shall be from a single branch circuit which also provides other electrical service to habitable and occupiable areas.

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Smoke detection shall have: - The power for a household fire warning systems

shall be from a dedicated branch circuit or the unswitched portion of a branch circuit also used for power and lighting of habitable and occupiable areas.

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Two family dwellings that contain common areas (basements, interior stairways that serve both units) shall also be provided with smoke detection in the following locations:

- All common basements

- All common hallways

- All common stairways

Each detection device shall cause the operation of an alarm that is clearly audible in all bedrooms over background noise levels with all intervening doors closed.

95


MSBC – 6th Edition

Examples

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Detection Example Dwelling built under 6th Edition MSBC

- SD

(Photo)

- SD (Ion)

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First Floor is approximately 1,700 ft2, therefore an additional smoke detector must be added.

- SD (Photo)

- SD (Ion)

Detection Example (1) Dwelling built under 6th Edition MSBC

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- SD (Photo)

- SD (Ion)


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2nd Floor is approx. 1,600 ft2. No extra smokes are needed. 5 smokes times 1,200 ft2 can cover up to 6,000 ft2 total area.


- SD (Photo) - SD (Ion)

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101



102


Smoke/Heat Detection Requirements

7th Edition MSBC Dwellings permitted November 13th, 2008 to August

4th, 2011.


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November 13th, 2008 and to August 4th, 2011.

- Not substantially altered to constitute new.

104



Smoke detection shall be installed: - In each bedroom (sleeping area).

- Outside each separate bedroom (sleeping area) in the immediate vicinity of the bedroom (sleeping area).

- Near the base of all stairs lead to another occupied floor.

105



Smoke detection shall be installed: - On each story, including basements and cellars. In

dwellings with split levels and without intervening door between the adjacent levels, a smoke detector installed on the upper level shall suffice for the adjacent lower level, provided that the lower level is less than one full story below the upper level


106



Smoke detection shall be:

- Interconnected with all other required smokes in the dwelling

- Photoelectric, if located within 20’ of a kitchen or a bathroom containing a tub or shower

- If outside the 20’, it can be dual (photoelectric/ionization)

- Allowed to be a wireless system as long as the system meets NFPA 72

107



Smoke detectors shall have:

- The primary power supplied from a permanently wired connection to an AC primary source of power.

- The primary power for single and multiple station smoke detectors shall be from either a dedicated locked branch circuit or a single branch circuit, which also provides other electrical service to a habitable space.

108



Smoke detection shall have: - The primary power for a household fire warning

systems shall be from a dedicated branch circuit or the unswitched portion of a branch circuit also used for power and lighting of habitable space.

- Secondary power supplied from monitored batteries.

109


Heat Detection Requirements 7th Edition of the MSBC

Heat detection shall be installed:

- In any integral garage (‘garage under’) or attached garage to the main house.

For flat ceilings, the single heat device shall be placed on or near the center of the garage ceiling.

For sloped ceilings having a rise to run greater than 1’ in 8’, the single heat device shall be placed in the approximate center of the vaulted ceiling but no closer than 4” to any wall.

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The heat detector is required to be interconnected to all smoke detectors of the required household fire warning system. The required garage heat detector is not required to incorporate audible alarm notification nor is any audible notification device required in the garage.

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Two family dwellings that contain common areas (basements, interior stairways that serve both units) shall also be provided with smoke detection in the following locations:

- All common basements.

- All common hallways.

- All common stairways.

Each detection device shall cause the operation of an alarm that is clearly audible in all bedrooms over background noise levels with all intervening doors closed.

112



Examples

113



- SD

(Photo)

- SD (Ion)

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- SD (Photo)

- SD (Ion)

- Heat detector


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- SD (Photo)

- SD (Ion)

- Heat detector


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- SD (Photo) - SD (Ion) - Heat detector

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- SD (Photo) - SD (Ion) - Heat detector

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- SD (Photo) - SD (Ion) © - CO - Heat detector

119


Smoke/Heat Requirements

8th Edition MSBC Dwellings permitted on February 4th, 2011 and after

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8th Edition of the MSBC:

- One and two family dwellings permitted from February 4th, 2011 to present

121



Smoke alarms shall be installed: - In each sleeping room

- Outside each separate sleeping area in the immediate vicinity of the bedrooms

- Near the base of all stairs where such stairs lead to another occupied floor

- On each additional story of the dwelling, including basements and habitable attics

122



Smoke alarms shall be installed: - In dwellings with split levels and without

intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent lower level, provided that the lower level is less than one full story below the upper level


123



Smoke alarms shall be:

- Interconnected with all other required smoke alarms in the dwelling.

- Photoelectric only.

124



Household fire alarm systems: - Installed in accordance with NFPA 72.

- Must becomes a fixture of the occupancy and owned by the homeowner

- Must provide the same level of protection as the smoke alarms

- Allowed to be a wireless system as long as the system meets the 2010 NFPA 72: 23.18

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Smoke alarms shall have: - The primary power supplied from the building

wiring when such wiring is served from a commercial source.

- The AC primary power shall be supplied from either a dedicated locked branch circuit or the unswitched portion of a branch circuit also used for power and lighting

126



A single heat detector shall be installed: - In any integral garage (‘garage under’) or

attached garage to the main house.

For flat ceilings, the single heat detector shall be placed on or near the center of the garage ceiling.

For sloped ceilings having a rise to run greater than 1’ in 8’, the single heat detector shall be placed in the approximate center of the vaulted ceiling but no closer than 4” to any wall.

127



The heat detector is required to be interconnected to all smoke alarms. The required garage heat detector is not required to incorporate audible alarm notification nor is any audible notification device required in the garage.

128



Examples

129



- SD

(Photo)

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- SD (Photo)

- Heat detector


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- SD (Photo) - Heat detector

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- SD (Photo) - Heat detector

133



There are no requirements for any common area smoke alarms in two family dwellings that contain common areas (foyers, basements, or interior stairways that serve both units).

134


Alterations, repairs and additions 8th Edition of the MSBC

Contradictions in 780 CMR 51.00:

- R314.3.1

- R315.4

See BBRS Official Interpretation No. 2012_2 from January 10th, 2012.

- Go to Appendix J – AJ102.3

135



Per 780 CMR 51.00: AJ102.3:

- If a sleeping room is added or created in an existing dwelling, the entire dwelling shall be provided with detection as for new construction.

- If dwelling undergoes complete reconstruction such that all walls and ceilings are open to framing, then it must conform to new construction.

136



New garage addition:

- A heat detector must be provided.

- If the house contains a fire detection system that is compatible with the garage heat detector, then the detector shall be interconnected to the existing system.

137


Alterations, repairs and additions

8th Edition of the MSBC

New garage addition:

- Where the existing fire detection system is not

compatible with the garage heat detector, the garage heat detector shall be connected to a sounder (occupant notification appliance) or compatible heat detector containing a sounding device, located in the dwelling and within 20’ of the nearest door to the garage from the dwelling.

138


Carbon Monoxide Detector Requirements for One and

Two Family Dwellings

139


MGL c. 148 s. 26F½

140


MGL c. 148 s. 26F½

CO alarms required in certain residential

structures; regulation; inspections; enforcement

141


MGL c. 148 s. 26F½

Every dwelling, building or structure, occupied in whole or in part for residential purposes, that:

- Contains fossil-fuel burning equipment; or

- Incorporates enclosed parking within its structure

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MGL c. 148 s. 26F½

Shall be equipped by the owner with working, approved carbon monoxide alarms in conformance with the requirements of the board of fire prevention regulations.

143


MGL c. 148 s. 26F½

The board of fire prevention regulations shall promulgate such regulations as may be necessary to effectuate this section including, but not limited to, the type, installation, location, maintenance and inspectional requirements of CO alarms.

- 527 CMR 1.00: 13.7.7

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MGL c. 148 s. 26F½

Every dwelling, building or structure, occupied in whole or in part for residential purposes, shall, upon sale or transfer of such dwelling, building or structure, be inspected by the head of the fire department for compliance with the requirements of this section.

The head of the fire department shall enforce this section.

145


MGL c. 148 s. 26F½

The MSBC may impose stricter CO alarm requirements for new construction or dwellings, buildings, or structures substantially renovated so as to constitute the equivalent of new construction.

146


MGL c. 148 s. 26F½

Every such dwelling building or structure, occupied in whole or in part for residential purposes, shall, upon sale or transfer of such dwelling, building or structure, be inspected by the head of the fire department for compliance with the CO alarm requirements of the MSBC in effect on the date of the issuance of the relevant building permit.

147


CO Detection Requirements Dwellings permitted prior to November 13th,

2008

148


527 CMR 1.00: 13.7.6

CO Detection

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CO Detection

13.7.6.1: For the purposes of MGL c. 148 s. 26F½, CO detection shall be provided and installed in accordance with NFPA 720 and Section 13.7.6.

- 2012 NFPA 720 (527 CMR 1.00: 2.2)

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CO Detection

527 CMR 1.00: 13.7.6.5: CO alarms shall be installed as provided in Section 13.7.6 and Table 13.7D in the following manner: - One CO alarm on every habitable level of a dwelling

unit with a sleeping area

- One CO alarm in habitable portions of basements, cellars and attics

- One CO alarm in the immediate vicinity of a sleeping area but within 10’ measured in any direction from the door to the sleeping area

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Table 13.7D

152


Table 13.7D

Placement of CO Devices:

153


Table 13.7D

Power Supply of CO Devices:

154


Table 13.7D

Power Sources: - Battery powered;

- Wireless appliances; or

- A/C plug-in with battery up per NFPA 720.

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Table 13.7D

Type of Devices:

156


CO Detection

13.7.6.5.1.1: Combination device are allowed

Combination devices must included both simulated voice and tone alarm features which clearly distinguishes between CO and smoke notification

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CO Detection

13.7.6.5.1.1: Combination device are allowed

Combination devices must included both simulated voice and tone alarm features which clearly distinguishes between CO and smoke notification

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CO Detection

13.7.6.5.1.1: Unless a system employs the following: (1) Each combo device produces a distinctive audible and

visual alarm signal for smoke and CO.

(2) Within each dwelling unit, a control unit or annunciator is installed displaying a distinctive alphanumeric message (digital or embossed) for smoke and CO.

(3) The control unit or annunciator shall be located in an accessible area within each dwelling unit and be visible at all times.

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Table 13.7D

Technical Options:

160


Technical Options

13.7.7: In lieu of providing CO protection within each level of a dwelling unit, may use the technical options .

However, notwithstanding the use of any technical option, CO protection shall also be installed in any dwelling unit that contains fossil fuel burning equipment.

161


Table 13.7D

Wiring: - Not required to be interconnected

162



© - CO

©

165


CO Detection Requirements 7th Edition MSBC

Dwellings permitted after November 13th, 2008 to August 4th, 2011*


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CO Detection Requirements 7th Edition of the MSBC

A CO detector shall be installed on:

- On each story of a dwelling unit, including basements and cellars (but not including crawl spaces and uninhabitable attics).

- When mounting a CO detector on a story with a bedroom, the detector shall be located outside the bedroom. A CO detector shall be installed no more than 10’ outside any bedroom door.

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CO detectors shall be either:

- Listed, interconnected 120 volt,

- Listed, low-voltage combination system, or

- Listed, wireless system.

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All CO alarms shall have secondary power supplied from monitored batteries in accordance with NFPA 720.

- For fire alarm control units, the panel battery shall serve as the source of secondary power.

- For wireless systems, the panel battery shall serve as the source of secondary power.

172



All CO detectors shall be UL 2034 listed or UL 2075 listed.

Required CO detectors are not required to be interconnected to the required household fire warning system, but where interconnection is desired, such CO detectors shall be compatible with the fire detection devices.

Fire alarms shall have precedence over CO alarms.

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Carbon Monoxide Examples

174


CO Detection Requirements 8th Edition MSBC

Dwellings permitted after February 4th, 2011

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A CO alarm shall be installed on:

- On each story of a dwelling unit, including basements and cellars (but not including crawl spaces and uninhabitable attics).

- When mounting a CO alarm on a story with a bedroom, the alarm shall be located outside the bedrooms but no more than 10’ outside any bedroom door.

180



CO alarms shall be either:

- Interconnected 120 volt,

- Low-voltage combination system, or

- Wireless system.

181

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Carbon Monoxide Examples

182



184


©



185


©

©


780 CMR R315

Currently, there is no CO protection required for common areas (stairs, halls, basements) of two-family dwellings.

186



Contradictions in 780 CMR 51.00:

- R314.3.1

- R315.4

See BBRS Official Interpretation No. 2012_2 from January 10th, 2012.

- Go to Appendix J – AJ102.3.

187



Per 780 CMR 51.00: AJ102.3:

- If a sleeping room is added or created in an existing dwelling, the entire dwelling shall be provided with detection as for new construction.

- If dwelling undergoes complete reconstruction such that all walls and ceilings are open to framing, then it must conform to new construction.

188

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Contacts: Division of Fire Safety

Massachusetts Department of Fire Services

www.mass.gov/dfs

(978) 567-3199 (fax)

Fire Department Assistance Territories:

North of the Mass Pike: [email protected]

(978) 567-3376

South/Along Mass Pike: [email protected]

(978) 567-3377

189

mailto:[email protected]

mailto:[email protected]

department of fire services - mass.gov€¦ · department of fire services division of fire safety...

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