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507713-01

Page 32 of 32

Issue 1623

REQUIREMENTS for COMMONWEALTH of MASSACHUSETTS

Modifications to NFPA-54, Chapter 10 -

Revise NFPA-54 section 10.8.3 to add the following 

requirements:

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 

the 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,

horizontally vented, gas-fueled equipment, the installing

plumber or gas fitter shall observe that a hard wired

carbon monoxide detector with an alarm and battery

backup  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,

horizontally 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 backup may be 

installed 

on the next adjacent floor level.

 

b.

 

In the 

event that the requirements of this

 

subdivision  cannot  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.

EXEMPTIONS: The following equipment is exempt from 

24 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.

MANUFACTURER REQUIREMENTS - 

GAS EQUIPMENT VENTING SYSTEM PROVIDED. 

When the manufacturer of Product Approved side wall, 

horizontally vented, gas fueled 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.

MANUFACTURER REQUIREMENTS - 

GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. 

When the manufacturer of Product Approved sidewall, 

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.

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 

instructions shall remain with the appliance or 

equipment at the completion of the installation.

Содержание GUH80A

Страница 1: ...or equivalent service agency or the gas supplier WARNING Manufactured By Comfort Aire Century 1900 Wellworth Ave Jackson MI 49203 This manual must be left with the homeowner for future reference INST...

Страница 2: ...Return air from both sides 5 Bottom and one side return air 2 Flue outlet may be horizontal but furnace must be vented vertically 3 Optional external side return air filter kit cannot be used with th...

Страница 3: ...a licensed professional installer or equivalent service agency or the gas supplier WARNING Certifications These units are CSA International certified to ANSI Z21 47 In the USA installation of gas fur...

Страница 4: ...tions are met The vent system must be permanently installed per these installation instructions A room thermostat must control the furnace The use of fixed jumpers that will provide continuous heating...

Страница 5: ...to the house for combustion negative pressure outside pressure is greater than inside pressure will build to the point that a downdraft can occur in the furnace vent pipe or chimney As a result combus...

Страница 6: ...aining the furnace the return air must be handled by ducts which are sealed to the furnace casing and which terminate outside the space containing the furnace This is especially important when the fur...

Страница 7: ...area of at least one square inch per 2 000 Btu 645 mm per 59 kW per hour of the total input rating of all equipment in the enclosure If the equipment room is located against an outside wall and the ai...

Страница 8: ...asher have been removed the rigid leg will not touch the blower housing Setting Equipment WARNING Do not install the furnace on its front or its back Do not connect the return air ducts to the back of...

Страница 9: ...ity See Figure 9 2 Single side return air with optional return airbase See Figure 10 3 Bottom return air 4 Return air from both sides 5 Bottom and one side return air Figure 9 Single Side Return Air w...

Страница 10: ...rs or ceiling joists When straps are used to suspend the unit in this way support must be provided for both the ends The straps must not interfere with the plenum or exhaust piping installation Coolin...

Страница 11: ...wn the vent pipe and into the room This reverse flow of the flue gas may result in incomplete combustion and the formation of carbon monoxide gas This toxic gas might then be distributed throughout th...

Страница 12: ...from 9 to 5 to avoid interference with inducer motor Mounting Screws Location Figure 15 Figure 16 UPFLOW POSITION Top Vent Discharge The combustion air inducer may be rotated clockwise or counterclock...

Страница 13: ...ng must be brought into the unit from the bottom in order to accommodate the flue pipe Cut combustion air inducer tubing from 9 to 8 to avoid interference with inducer motor Remove make up box assembl...

Страница 14: ...s WARNING Use self drilling sheet metal screws or a mechanical fastener to firmly secure the vent pipe to the round collar of the flue transition If self drilling screws are used to attach the vent pi...

Страница 15: ...ey Never connect a Category I appliance to a chimney that is servicing a solid fuel appliance If a fireplace chimney flue is used to vent this appliance the fireplace opening must be permanently seale...

Страница 16: ...etween sections of single wall connector piping shall be fastened by screws or other approved means 13 When the vent connector used for Category I appliances must be located in or pass through a crawl...

Страница 17: ...onfigureations with zero lateral lengths are assumed to have no elbows in the vent system For all other vent configurations the vent system is assumed to have two 90 elbows For each additional 90 elbo...

Страница 18: ...Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving Two or More Category I Appliances Common Vent Capacity Type B Double Wall Vents with Type B Double Wall Connectors Serving...

Страница 19: ...problem is found during any of the preceding tests the common venting system must be modified to correct the problem Resize the common venting system to the minimum vent pipe size determined by using...

Страница 20: ...Configurations NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 27 NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET Figure 26 Table 6 Gas Pipe Capacity ft hr m hr Note Capacity...

Страница 21: ...ice to protect the furnace s electronic controls Precautions will help to avoid control exposure to electrostatic discharge by putting the furnace the control and the technician at the same electrosta...

Страница 22: ...on This terminal is energized in the heating mode when the combustion air inducer is operating Any humidifier rated up to one amp can be connected to this terminal with the neutral leg of the circuit...

Страница 23: ...507713 01 Page 23 of 32 Issue 1623 Wiring Diagram Figure 32 045 3 135 5 110 5 110 4 110 3 090 4 090 3 070 3 070 2...

Страница 24: ...l The control stores the last 5 fault codes in non volatile memorty The most recent fault code is flashed first the oldest fault code is flashed last There is a 2 second pause between codes When the p...

Страница 25: ...exactly a fire or explosion may result causing property damage personal injury or death WARNING 6 Move switch on gas valve to OFF Do not force See Figure 35 7 Wait five minutes to clear out any gas If...

Страница 26: ...accurate reading shut off all other gas appliances connected to meter Supply Pressure Measurement A threaded plug on the inlet side of the gas valve provides access to the supply pressure tap Remove t...

Страница 27: ...red at the pressure switch under steady state conditions after 15 minutes of run time against the as shipped switch set point Insufficient negative pressure may lead to nuisance pressure switch trips...

Страница 28: ...heat anticipator setting if adjustable according to the amp draw listed on the wiring diagram that is attached to the unit NOTE Do not secure the electrical conduit directly to the air ducts or struct...

Страница 29: ...rrectly Verify proper operation after servicing WARNING At the beginning of each heating season a qualified technician should check the system as follows Blower Check the blower wheel for debris and c...

Страница 30: ...ate All service must be performed by a licensed professional installer or equivalent service agency or gas supplier Heating Parts Flame sensor Heat exchanger assembly Gas manifold Combustion air induc...

Страница 31: ...1 1535 1469 1363 1257 1158 Med High 1420 1410 1368 1314 1273 1183 1103 1002 Med 1171 1168 1150 1126 1084 1022 935 817 Low 973 978 957 927 908 840 784 680 090B4 1 2 4 spd 10 x 10 30 60 High 1911 1840 1...

Страница 32: ...mum 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 t...

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