Minnesota Mechanical Code Flashcards
Heating, ventilation and air conditioning systems shall be designed and installed for efficient use of energy in accordance with the what?
International Energy Conservation Code
M 301.2
Appliances that are part of the building mechanical system shall not be converted to a different fuel, except where approved and in accordance with the what?
Manufacturers instructions
M 301.12
Mechanical systems in structures located in flood hazard areas shall be located at or above the what?
elevation required by the IBC
M 301.16
Walls enclosing occupiable rooms where food is stored, served or sold shall be constructed to protect against the entrance of ____________ in accordance with the building code.
rodents
M 301.17
Notches on the ends of solid wood joists shall not exceed what percent of the joist depth?
25%
M 302.3.1
Bored holes for the installation of piping shall be located at least _______ inches from the top or bottom of a solid wood joist.
5/8 inches
M 302.3.3
A bored hole in a floor joist is limited in diameter to _______ percent of the depth of the joist.
33 1/3 percent
M 302.3.1
Notches in the top or bottom of solid wood joists are limited to _______ of the depth of the joist.
1/4
M 302.3.1
Notches in the top or bottom of solid wood joists shall not be located in the middle _______ of the span.
1/3
M 302.3.1
In bearing partitions, wood studs may be cut or notched to a maximum depth of ______ percent of the stud depth.
25 percent
M 302.3.2
Studs used in nonbearing partitions are permitted to be cut or notched to a maximum depth of ______ percent of the stud depth.
40 percent
M 302.3.2
Unless doubled, studs within an exterior bearing wall may contain bored holes with a maximum diameter of ______ percent of the stud depth.
40 percent
M 302.3.3
For studs in a nonbearing partition, the maximum permitted diameter of a bored hole is ______ percent of the stud depth.
60 percent
M 302.3.3
Bored holes shall not be nearer than _______ inch to the edge of the stud.
5/8 inch
M 302.3.3
Cuts, notches and bored holes are prohibited in structural composite lumber, except where permitted by the manufacturers recommendations or where what else?
The effects are considered in the design
M 302.3.4
Appliances shall not be installed in a location where they may be subject to mechanical damage unless they are what?
protected by approved barriers
M 303.4
A boiler installed in a closet shall be what?
listed for installation in a closet
M 303.5
Holes in webs of nonstructural cold-formed steel studs shall be a maximum _____ inches in length.
4 inches
M 302.5.3
Sides of pits or excavations used for appliance locations shall be held back a minimum of ______ inches from the appliance.
12 inches
M 303.7
Where the depth of an excavation housing an appliance exceeds 12 inches below the adjoining grade, the walls of the pit or excavation shall be lined with concrete or masonry extending a minimum of _____ inches above adjoining grade.
4 inches
M 303.7
When located within a repair garage, appliances with an ignition source shall be elevated such that the ignition source is a minimum of ______ inches above the garage floor.
18 inches
M 304.3
Unless an exception for a specific appliance applies, a fuel-fired appliance is prohibited in all but which of the following rooms or spaces?
A. sleeping room
B. toilet room
C. crawl space
D. storage closet
C. crawl space
M 303.3
Where natural ventilation is used for a hydrogen generating appliance, the maximum rated output capacity shall not exceed 4 standard cubic feet per minute of hydrogen for each ________ square feet of floor area.
250
M 304.5.1
Where natural ventilation is used, indoor locations intended for hydrogen-generating operations shall communicate with the outdoors through openings with a minimum cross-sectional dimension of what?
3 inches
M 304.5.1
When calculating the free area required for natural ventilation openings serving indoor hydrogen-refueling operations, it can be assumed that wood louvers will have ______ percent free area.
25 percent
M 304.5.1.2
Unless adequately protected from impact, appliances in a public garage shall be located a minimum of _____ feet above the floor.
8 feet
M 304.6
In public garages where vehicles are capable of passing under an appliance, the appliance shall be installed a minimum of _____ inches higher than the tallest vehicle garage door opening.
12 inches
M 304.6
Unless protected from impact, appliances located in private garages shall be installed with a minimum clearance above the floor of what?
6 feet
M 304.7
Suspended mechanical equipment shall be installed a minimum of _____ inches above adjoining grade.
6 inches
M 304.10
Where appliances are located on roofs, any required guards shall be constructed so as to prevent the passage of a _______ inch-diameter sphere.
21 inch-diameter
M 304.11
Horizontal ABS piping shall be supported at maximum intervals of what?
4 feet
M Table 305.4
The maximum horizontal spacing of supports for 3/4” CPVC tubing shall not exceed what?
3 feet
M Table 305.4
A shield plate is required to protect against damage where piping other than cast-iron or steel is run through a bored hole in a stud, and the distance to the nearest edge of the member is less than what?
1 1/2 inches
M 305.5
Where a CPVC pipe passes through a bored hole in a top plate near enough to the edge to require protection, the protective steel plate shall cover the area of the pipe and shall extend not less than ______ inches below the top plates.
2 inches
M 305.5
In other than within a dwelling unit, a door and an unobstructed passageway measuring a minimum of _______ inches in width and 80 inches in height shall be provided for access to an appliance located in a room.
36 inches
M 306.2
Appliances installed in a basement of a dwelling unit shall be accessed by an opening or door and an unobstructed passageway measuring a minimum of _______ inches in width.
24 inches
M 306.2 See exception
In general, attics containing equipment shall be provided with an unobstructed passageway at least ______ inches in width.
22 inches
M 306.3
Unless a minimum 6’ high 22” wide passageway is provided, equipment installed in underfloor areas shall be located a maximum of ______ feet from the access opening.
20 feet
M 306.4
Where the opening dimensions are large enough to allow removal of the largest appliance, the clear access opening to the underfloor area containing the equipment shall be a minimum of what?
30 inches high
22 inches wide
M 306.4
Regardless of whether the access is interior or exterior, a permanently installed means of access is required where an appliance is installed on a roof that requires personnel to climb higher than ______ feet above grade.
16 feet
M 306.5
Platforms for service of appliances installed on roofs with a minimum slope of 3:12 and a platform edge more than 30 inches above grade shall be a minimum of what?
30 inches by 30 inches
M 306.5.1
Condensate waste and drain lines shall be a minimum of ______ inch pipe size.
3/4 inch
M 307.2.2
Where an auxiliary drain pan with a separate drain line is utilized for condensate disposal, it shall have a minimum pan depth of what?
1 1/2 inches
M 307.2.3 #1
Nonmetallic auxiliary drain pans for condensate disposal shall have a minimum thickness of what?
0.0625 inches
M 307.2.3 #1
Reduced clearance protective assemblies for mechanical appliances shall be placed a minimum of _____ inch from the appliance.
1 inch
M 308.3
Where two layers of No. 24 gage galvanized sheet steel are installed on a ceiling with a 1 inch air space between the layers and a 1 inch air space off of the combustible ceiling assembly, a generally required 36 inch clearance above the heat source may be reduced to what?
18 inches
M Table 308.4.2
Outdoor air intake openings for ventilation purposes shall be located a minimum of ______ feet from a lot line.
10 feet
M 401.4 #1
Where located above the contaminant source, gravity outdoor air intake openings provided for ventilation shall be located a minimum of ______ feet horizontally from any noxious contaminant source.
10 feet
M 401.4 #2
Outdoor air intake openings shall be permitted to be located less than 10 feet horizontally from a street, alley, parking lot or loading dock, provided the openings are located not less than ______ feet vertically above such locations.
25 feet
M 401.4 #2
In other than residential occupancies, the maximum opening size in a screen protecting an air intake opening in an exterior wall shall be _____ inch measured in any direction.
1 inch
M Table 401.5
The operating mechanism for openings providing natural ventilation shall be controllable by whom?
Building occupants
M 402.1
Where exterior openings are utilized under the natural ventilation provisions for obtaining the required ventilation air, the minimum openable ventilating area to the outdoors shall be ______ percent of the floor area being ventilated.
4 percent
M 402.2
Where adjacent spaces are used for natural ventilation purposes, the openings between the adjacent spaces shall have a minimum area of _____ percent of the floor area of the interior room.
8 percent
M 402.3
Wherever openings to adjoining spaces are used to provide natural ventilation, the opening area shall be a minimum of ______ square feet.
25 square feet
M 402.3
Where openings below grade provide the required natural ventilation, the horizontal clear space outside the opening shall be a minimum of ______ times the depth of the opening.
1 1/2
M 402.4
Ventilation air shall not be recirculated from one dwelling to another or to ____________ occupancies.
Dissimilar
M 403.2.1 #1
In addition to the general ventilation requirements, each manicure station in a nail salon shall be provided with a source capture system capable of exhausting a minimum of ______ cfm per station.
50 cfm
M Table 403.3.1.1 Exception h
Grilles and screens protecting outdoor intake openings in a residential building shall have a minimum opening size of ______ inch in any direction.
1/4 inch
M Table 401.5
For intermittent mechanical ventilation of an enclosed parking garage, the code requires automatic operation by means of carbon monoxide detectors and what other detectors?
Nitrogen dioxide detectors
M 404.1
Mechanical systems for uninhabited spaces shall automatically operate when the humidity exceeds ______ percent.
60 percent
M 406.1
The termination point for a duct intended to exhaust flammable vapors shall be located a minimum of ______ feet from any property line.
30 feet
M 501.3.1 #1
In a fuel dispensing area, the bottom of an exhaust opening shall be located a maximum of _____ inches above the floor.
18 inches
M 502.1.2
Where identical spray-finishing material is used in each of multiple spray booths, a common exhaust is permitted provided that the combined frontal area of the booths is a maximum of ______ square feet.
18 square feet
M 502.7.3.5 Exception #1
Exhaust ventilation for powder coating operations shall be sufficient to maintain the atmosphere below ______________ of the minimum explosive concentration for the material being applied.
50 percent
M 502.7.6
In dry-cleaning rooms, the exhaust system for a Type II dry-cleaning system shall be designed to provide an exhaust air flow rate of ______ cfm per square foot of floor area.
1 cfm
M 502.6.1
Type IV and V dry-cleaning systems shall be provided with an automatically activated exhaust system capable of maintaining a minimum air velocity of _______ feet per minute through the loading door when the door is opened.
100 feet per minute
M 502.6.2
Compressed medical gas storage cabinets shall be connected to an exhaust system having a minimum average velocity of ventilation at the face of access ports of what?
200 feet per minute
M 502.9.1
The exhaust rate through a mechanical exhaust system for xenon motion picture projectors shall be a minimum of ________ cfm per lamp.
300 cfm
M 502.11.2
When exhaust fans are required to be spark resistant, all parts of the fan shall be what?
grounded
M 503.2
Clothes dryer installations exhausting a maximum of ______ cfm need not be provided with makeup air.
200 cfm
M 504.6
Domestic clothes dryer exhaust ducts shall be a nominal size of ______ inches in diameter.
4 inches
M 504.8.1
In general, domestic clothes dryer exhaust ducts shall have a maximum length of _______ feet, measured from the dryer transition duct to the outlet terminal.
35 feet
M 504.8.4.1
Commercial clothes dryer exhaust ducts shall be installed a minimum of _____ inches from combustible materials.
6 inches
M 504.9
Where cooking appliances are required to have a Type I hood, they must be provided with an approved what?
automatic fire suppression system
M 509.1
The total replacement airflow rate for a facility with a commercial kitchen ventilation system shall equal the total ______ __________ ______ plus the net exfiltration.
exhaust airflow rate
M 508.1
A duct system for hazardous exhaust shall be required whenever a flammable vapor is present in concentrations exceeding a minimum of _______ percent of its lower flammability limit.
25 percent
M 510.2 #1
Hazardous exhaust systems shall be designed and operated such that the flammable contaminants are diluted in the exhaust flow to below a maximum of ______ percent of their lower flammability limit.
25 percent
M 510.3
Ducts for hazardous exhaust systems with a maximum exhaust gas temperatures of 500 degrees F shall have a minimum of _____ inches clearance to combustibles.
12 inches
M Table 510.9.2
Hazardous exhaust ducts shall be supported at maximum intervals of what?
10 feet
M 510.10
As a portion of a refuse conveying system, an exhaust outlet serving a low-heat appliance (800 degrees F) shall terminate a minimum of ______ feet above the roof opening.
3 feet
M Table 511.2
Subslab soil exhaust system ducts shall have a minimum slope of ____ percent.
1 percent
M 512.3
Subslab soil exhaust system ducts shall terminate a minimum of _____ inches above the roof.
6 inches
M 512.4
In a stock conveying system, a single wall metal chimney serving a medium heat appliance shall terminate a minimum of _______ feet above any part of the building within 25 feet.
10 feet
M Table 511.2
The provisions for smoke control are intended for what?
tenable environment for evacuation
M 513.1
In determining the maximum probable stack effects during the design of a smoke control system, elevation, weather history, interior temperatures and what else should be used?
altitude
M 513.4.1
All portions of active or engineered smoke control systems shall be capable of continued operation after detection of fire event for a minimum of ______ minutes, but not less than 1.5 times the calculated egress time.
20 minutes
M 513.4.6
Ducts and transfer openings utilized as portions of a smoke control system are required to be protected with a minimum class II, _______ degree F smoke damper.
250 degree F
M 513.5.3.2
When using the airflow design method for a smoke control system, the maximum air flow toward a fire shall be ________ feet per minute.
200 feet per minute
M 513.7.1
When using the exhaust method for a smoke control system, the minimum height of the lowest horizontal surface of the accumulating smoke layer shall be _____ feet above any walking surface.
6 feet
M 513.8.1
When using the pressurization method for a smoke control system, the minimum pressure difference across a smoke barrier shall be _______ - inch water gage in a fully sprinklered building.
0.05 - inch
M 513.6.1
Energy recovery ventilation systems shall be provided with a means of access to the heat exchanger as required for service, maintenance, repair of what else?
replacement
M 514.3
Corridors are permitted to be used to convey return air when they are located within tenant spaces having a maximum of __________ square feet in area.
1,000 square feet
M 601.2 #3
Gypsum boards used to form HVAC plenums shall be limited to systems with a maximum air temperature of what?
125 degrees F
M 602.2
Unless using the special approval criteria from the International Building Code, foam plastic in plenums used as a wall interior finish shall have a maximum flame spread index of ______ and be separated from the plenum by a complying thermal barrier or covered by corrosion resistant steel.
75
M 602.2.1.6 Exception #2
Materials exposed within HVAC plenums shall be noncombustible or have a maximum flame spread rating of what?
25
M 602.2.1
Stud wall cavities utilized as air plenums shall comply with all of the following conditions, except they?
A. shall not convey air from more than one floor level
B. shall not be located in the outside wall of the building envelope
C. shall be isolated from adjacent concealed spaces by fire-blocking
D. shall be permitted solely for supply air
D. shall be permitted solely for supply air
M 602.3 #1
What is the maximum permitted length of a flexible air duct?
unlimited
M 603.6.1.1
Unless provided with an approved protective coating, metallic underground ducts shall be completely encased in a minimum of _____ inches of concrete.
2 inches
M 603.8
Where installed within a single dwelling unit, exposed 10 inch rectangular galvanized steel ducts with a static pressure of 1/2 inch water gage shall be a minimum of how thick?
0.013 inch
M Table 603.4
Flexible air connectors shall be limited in length to a maximum of what?
14 feet
M 603.6.2.1
What air connectors shall not pass through any wall, floor or ceiling?
flexible
M 603.6.2.2
The permitted temperature of air in flexible air ducts or flexible air connectors shall be less than what?
250 degrees F
M 603.6.3
Return air openings must be located a minimum of ______ feet from the draft hood of another appliance located in the same room.
10 feet
M 601.5 #1
Unless complying as underground ducts per IMC Section 603.8, ducts shall be installed a minimum of _____ inches from the earth.
4 inches
M 603.14
Floor registers shall resist, without structural failure, a minimum ______ - pound concentrated load on a 2 - inch diameter disc applied to the most critical area of the exposed face.
200 - pound
M 603.18.1
Ducts that operate at a maximum temperature of ________ degrees F need not have thermal insulation to limit the exposed surface temperatures.
120 degrees F
M 604.2
Factory-insulated flexible duct shall be printed or identified at maximum intervals of what?
36 inches
M 604.7
Interruptions in the linings of ducts are required a minimum of _____ inches upstream and downstream of fuel-burning heaters in a duct system.
6 inches
M 604.8
A fire damper protecting the duct penetration of a 2 - hour fire resistance rated wall assembly shall have a minimum fire protection rating of what?
1 1/2 hours
M Table 607.3.2.1
Smoke detectors are not required to be installed in a return air system with a maximum design capacity of what?
2,000 cfm
M 606.2.1
Smoke detectors are not required in a return air system where all portions of the building served by the air distribution system are what?
protected by area smoke detectors connected to a fire alarm system
M 606.2.1 See exception
Where multiple air-handling systems share common return air ducts with a maximum design capacity of _________ cfm, smoke detectors need not be provided in the return air system.
2,000 cfm
M 606.2.2
Where return air risers serve two or more stories, smoke detectors shall be installed at each story in return air systems with a design capacity greater than what?
15,000 cfm
M 606.2.3
Smoke damper leakage ratings shall be of what class?
Class I or II
M 607.3.2.2
Access points to permit inspection and maintenance of fire and smoke dampers shall be permanently identified by a label having letters not less than ______ inch in height.
1/2 inch
M 607.4
Fire dampers are not required at shaft penetrations where steel subducts extend a minimum of ______ inches vertically in the exhaust shaft and there is continuous upward airflow to the outside.
22 inches
M 607.5.5 Exception 1.1
Chapter 8 of the IMC governs the installation, maintenance, repair and approval of factory-built chimneys, chimney liners, vents and connectors. This chapter also governs the utilization of what?
masonry chimneys
M 801.1
Chimneys or vents shall be designed for the type of what?
appliance being vented
M 801.2
Masonry chimneys shall be constructed in accordance with the what?
International Building Code
M 801.3
The cross-sectional area of a flue serving a solid fuel-burning appliance shall be a maximum of _____ times the cross-sectional area of the flue collar or outlet.
3 times
M 801.7
Abandoned inlet openings in chimneys and vents shall be closed by a what?
approved method
M 801.8
Connectors shall connect to a chimney flue at a point a minimum of ______ inches above the lowest portion of the interior of the chimney flue.
12 inches
M 801.12
In general, masonry chimney flues shall be provided with a cleanout opening having a minimum height of what?
6 inches
M 801.13
A cleanout for a chimney flue serving a masonry chimney is not required when the flue is provided with access through where?
the fireplace opening
M 801.13 See Exception
Except where a reduction is permitted by Section 308, a nonlisted chimney connector serving a medium-heat appliance must be provided with a minimum clearance of ______ inches to combustibles.
36 inches
M Table 803.10.6
Residential flue linings are permitted to be of any approved materials that will resist, without cracking, softening or corrosion, flue gasses and condensate up to a temperature of what?
1,800 degrees F
M 801.16.1
Where vents pass through attic space, the required insulation shield shall terminate a minimum of _____ inches above the insulation materials.
2 inches
M 802.8
In general, vents shall terminate a minimum of _____ feet vertically above the highest connected appliance flue collar.
5 feet
M 802.6
Where vents pass through insulated assemblies, a __________ __________ _________ __________ shall be installed to provide the required clearance between the vent and the insulation material.
26-gage metal insulation shield
M 802.8
The minimum required nominal thickness for a 6 inch diameter chimney connector for a low heat appliance is No. ______ gage.
No. 24 gage
M Table 803.9(1)
The minimum required nominal thickness for an 8 inch diameter chimney connector for a high heat appliance is No. ______ gage.
No. 16 gage
M Table 803.9(2)
The maximum permitted horizontal length of a single wall chimney connector is _______ percent of the height of the chimney.
75 percent
M 803.10.2
Except where a reduction is permitted by section 308, a nonlisted chimney connector serving a domestic type solid fuel appliance must be provided with a minimum clearance of ______ inches to combustibles.
18 inches
M Table 803.10.6
Appliances with integral vents that use forced draft venting systems shall be located so that a minimum clearance of ______ inches is maintained between vent terminals and from any openings into into the building through which combustion products can enter.
12 inches
M 804.2.1
The termination of a vent equipped with a power exhauster shall be located a minimum of _____ feet from adjacent buildings.
10 feet
M 804.3.3
For mechanical draft systems, horizontal vent terminations shall be located a minimum of ______ feet horizontally from, or 1 foot above, any door or window.
4 feet
M 804.3.4 #3
For mechanical draft systems, horizontal vent terminations shall be a minimum of _____ inches above finished grade.
12 inches
M 804.3.4 #4
For mechanical draft systems, where termination of a vertical vent occurs below an adjacent roof structure, the termination point shall be located a minimum of _____ feet from such structure.
3 feet
M 804.3.5
UL 959 applies to factory built chimneys for medium heat appliances producing flue gases having minimum temperatures above what?
1,000 degrees F
M 805.5
Fireplaces and solid fuel burning appliances shall not be installed in where?
hazardous locations
M 901.3
Masonry fireplaces shall be constructed in accordance with what?
International Building Code
M 902.1
Listed and labeled hearth extensions for factory built fireplaces, fireplace stoves and solid fuel type room heaters shall comply with what?
UL1618
M 903.2
Fireplace stoves shall be tested in accordance with what?
UL 737
M 905.1
UL 1482 is the appropriate reference standard for the listing and labeling of what two things?
solid fuel type room heaters
fireplace inserts
M 905.1
Factory built barbeque appliances shall be of an approved type and installed in accordance with the IMC and the what?
International Fuel Gas Code
M 906.1
What should not be installed unless the factory built fireplace system has been specifically tested, listed and labeled for the installation?
gasketed fireplace doors
M 903.4
Cooling towers and fluid coolers shall be provided with what?
ready access
M 908.2
Cooling towers shall be located to prevent __________ __________ ________ from entering occupied spaces.
discharge vapor plumes
M 908.3
Unless adequately separated horizontally, plume discharges from cooling towers shall be a minimum of _____ feet above any ventilation inlets to a building.
5 feet
M 908.3
The location of cooling towers on the property shall be as required in accordance with the what?
International Building Code
M 908.3
Unless adequately separated vertically, plume discharges from cooling towers shall be a minimum of ______ feet away from any ventilation inlets to a building.
20 feet
M 908.3
Drains, overflows and blowdown provisions for cooling towers shall be _________ connected to an approved disposal system.
indirectly
M 908.6
Discharge of chemical waste from a fluid cooler shall be approved by the who?
appropriate regulatory authority
M 908.6
Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air from ___________ to other parts of the building.
bathrooms
M 909.2
Vented wall furnaces shall be located so that a door swing maintains a minimum clearance of ______ inches from any air inlet.
12 inches
M 909.3
Access panels that must be removed for normal servicing operations on a vented wall furnace shall not be what?
be attached to the building construction
M 909.6
A what shall be installed ahead of all controls for a vented wall furnace?
manual shut off valve
M 909.5
Protection of the potable water supply system serving cooling towers shall be as required by the what?
International Plumbing Code
M 908.5
What is the minimum required size of a hearth extension for a factory-built fireplace?
as set forth in the fireplace listing
M 903.2
Which of the following appliances must be tested in accordance with UL 730?
oil-fire vented wall furnaces
Reference Standards
Oil-fire floor furnaces shall be tested in accordance with what?
UL 729
M 910.1
Radiant heating system panels installed on wood or steel framing shall be installed ___________ to framing members or shall be mounted between framing members.
parallel
M 927.3 #1
Floor furnaces shall be placed a minimum of ______ inches from the nearest wall.
6 inches
M 910.2
Wall register floor furnaces shall be placed a minimum of ______ inches from a corner.
6 inches
M 910.2
Registers for floor furnaces shall be placed a minimum of ______ inches from draperies and similar combustible materials.
12 inches
M 910.2
Floor furnaces shall not be installed in __________ floor construction built on grade.
concrete
M 910.2
In general, floor furnaces shall have a minimum clearance from grade of not less than what?
6 inches
M 910.4
The control side of a floor furnace shall have a minimum clearance of what?
18 inches
M 910.4
Other than the control side, a minimum clearance of ______ inches is required on all sides of a floor furnace.
12 inches
M 910.4
Where a floor furnace is sealed by the manufacturer to prevent the entrance of water, a minimum clearance of _____ inches is required from the grade level.
2 inches
M 910.4
Sauna heaters shall be protected by what?
an approved guard
M 914.1.1
Sauna heaters shall be equipped with a thermostat that will limit room temperature to a maximum of what temp?
194 degrees F
M 914.4
If a thermostat is not an integral part of the sauna heater, a heat sensing element shall be located a maximum of _____ inches below the ceiling.
6 inches
M 914.4
When provided to control the main burner operation of a sauna heater, a timer shall have a maximum operating time of what?
1 hour
M 914.4.1
A permanent warning notice shall be attached to the sauna room, stating in part “Do not exceed ______ minutes in sauna. “
30 minutes
M 914.5.1
The required ventilation opening into a sauna room shall be a minimum of _____ inches by _____ inches and located near the top of the door.
4 inches
8 inches
M 914.5
Cooking appliances installed within areas where domestic cooking operations occur shall be listed and labeled as ___________-type appliances for domestic use.
household
M 917.2
The quality of water supplied to evaporative cooling equipment shall be in accordance with the what?
equipment’s manufacturer’s recommendation
M 908.5
Suspended oil-fired unit heaters shall be installed in accordance with what?
NFPA 31
M 920.2
Unless listed for such installation, a unit heater shall not be attached to what?
attached to a warm air duct system
M 920.3
For a radiant heating panel attached to wood framing, fasteners shall be a minimum of _______ inch from any element.
1/4 inch
M 927.3 #2
Electric commercial clothes dryers shall be tested in accordance with what?
UL 1240
M 913.1
The minimum side clearance to combustibles for a commercial clothes dryer shall be what?
6 inches
M 504.9
Masonry heaters shall be constructed in accordance with the what?
International Building Code
M 925.1
All water heaters shall be capable of being removed without first removing what?
removing permanent construction
M 1002.2
An unfired pressure vessel installed in a Group B occupancy is not regulated by the provisions of Chapter 10, provided it operates at a maximum pressure of _______ psi and has a maximum volume of _____ cubic feet.
250 psi
5 cubic feet
M 1001.1 #4
Water heaters used for both potable water heating and space heating shall be sized to prevent the space-heating load from reducing the required what?
potable water heating capacity
M 1002.2.1
Where a combination potable water heating and space heating system requires water for space heating with a temperature higher than _______ degrees F, a temperature actuated mixing valve shall be provided.
140 degrees F
M 1002.2.2
In sizing a closed-type expansion tank, which of the following criteria is not required?
A. average operating temperature
B. fill pressure
C. atmospheric pressure
D. minimum operating pressure
D. minimum operating pressure
M 1009.2
Boiler operating instructions of a permanent type shall be what?
attached to the boiler
M 1004.2
Boilers shall have all controls set, adjusted and tested by whom?
the boiler installer
M 1004.7
Clearances shall be maintained around boilers so as to permit inspection, servicing, repair, replacement and?
visibility of gauges
M 1004.3
In order to provide for working clearances, passageways around all sides of boilers shall have a minimum unobstructed width of ______ inches unless otherwise approved.
18 inches
M 1004.3
High-pressure steam boilers with an input in excess of 5,000,000 Btu/h shall have a minimum clearance of _____ feet between the top of the boiler and the ceiling.
3 feet
M Table 1004.3.1
Except where a greater clearance is specifically required, all boilers with manholes on top of the boiler shall have a minimum clearance between the top of the boiler and the ceiling of what?
3 feet
M Table 1004.3.1
In general, all boilers without manholes on top of the boiler, excluding high-pressure steam boilers, shall have a minimum clearance of _____ feet from the ceiling.
2 feet
M Table 1004.3.1
Every steam boiler shall have a _______________ and a __________________.
water-gauge glass
pressure gauge
M 1010.2
For an open-type hot water expansion tank, an overflow with a minimum diameter of ____ inch shall be installed at the top of the tank.
1 inch
M 1009.3
In the installation of a boiler, valves shall be located on _________ side of a safety or relief valve connection.
neither side
M 1006.5
Safety and relief valve discharge pipes for boilers shall be of _________ pipe that is approved for the temperature of the system.
rigid
M 1006.6
High-pressure-steam safety valves for boilers shall be vented to where?
the outside of the structure
M 1006.6
In the electrical control system for a boiler, control and limit devices shall interrupt the __________ side of the circuit.
ungrounded
M 1006.8
The required manual disconnecting means for a boiler control circuit shall be capable of being locked in the off position and shall be provided with what?
ready access
M 1006.8
Steam boilers shall be equipped with ___________ blow off valves.
bottom
M 1008.1
Open-type hot water boiler expansion tanks shall be located a minimum of _____ feet above the highest heating element.
4 feet
M 1009.3
During the testing of a boiler or pressure vessel, the indicating test gauge shall have the pressure gauge scale graduated over a range of not less than one and one-half times and not greater than ______ times the maximum test pressure.
4 times
M 1011.2
A steam boiler water gauge glass shall be installed so that the ______________ is at the normal boiler water level.
midpoint
M 1010.2.1
Refrigeration systems having a refrigerant circuit containing a maximum of _____ pounds of Class A2 refrigerant are permitted to be changed without prior notification to the code official.
30 pounds
M 1101.8
Ethane, identified as R-170, is classified as an ______ refrigerant.
A3
M Table 1103.1
Where refrigerating equipment is located outside a building and a maximum of ______ feet from a building opening, the equipment shall be regulated by the occupancy classification of the building.
20 feet
M 1103.2
For the purpose of regulating refrigerating systems, large mercantile occupancies are defined as those facilities where more than ________ persons congregate on levels above or below street level to purchase personal merchandise.
100 persons
M 1103.2 #5
In institutional occupancies, the maximum permitted total of all Group A2, B2, A3 and B3 refrigerants in occupied areas or machinery rooms is?
550 pounds
M 1104.2.1
In the mechanical ventilation of a machinery room, an exhaust system shall be discharged a minimum of ______ feet from a property line or any openings into buildings.
20 feet
M 1105.6.1
In other than industrial occupancies where the quantity in a single independent circuit does not exceed the amount in IMC Table 1103.1, which one of the following refrigerants is prohibited for use in high-probability systems for air-conditioning for human comfort?
A. A1
B. A2
C. A3
D. B1
B1
M 1104.3.1
Pressure relief devices, fusible plugs and purge systems located within a machine room shall terminate outside of the structure at a location a minimum of ______ feet above the adjoining grade level.
15 feet
M 1105.7
Machinery rooms shall not have continuously operating hot surfaces over _______ degrees F permanently installed in the room.
800 degrees F
M 1106.2
For all occupancies, the total permitted amount of all Group A2, B2, A3 and B3 refrigerants shall be a maximum of _________ pounds except where approved.
1100 pounds
M 1104.3.3
Where makeup air is provided to replace exhaust air from a machinery room, supply and exhaust ducts to the machinery room shall be covered with corrosion resistant screen of a minimum _____ inch mesh.
1/4 inch
M 1105.6.2
Where a machinery room is provided with an emergency ventilation system, the point of discharge to the atmosphere outside of the structure shall be a minimum of ______ feet above the adjoining grade level.
15 feet
M 1106.5.3
An emergency ventilation system serving a machinery room shall discharge a minimum of ______ feet from any window, ventilation opening or exit.
20 feet
M 1106.5.3
ASTM A53, Type F steel pipe shall not be used for refrigerant lines having an operating temperature of less than what?
-20 degrees F
M 1107.5.1
Steel pipe for Group A2, A3, B2 and B3 refrigerants shall have a minimum weight of Schedule 80 where a maximum of ______ inches in diameter.
1.5 inches
M 1107.5.1
In general, machinery rooms, other than properly ventilated rooms with systems containing Group A2L refrigerants, with equipment that uses Group A2, A3, B2 or B3 refrigerants shall conform to the Class ____, Division _____, hazardous locations classification requirements of NFPA 70.
Class 1, Division 2
M 1106.4
Polypropylene (PP) plastic pipe utilized in a hydronic piping system shall comply with ASTM standard?
F2389
M Table 1202.4
Piping for hydronic systems shall be sized for the _________ of the system.
demand
M 1201.2
Where thread lubricant is applied to the threaded joints of hydronic piping, it shall be applied to where?
only the male threads
M 1203.3.5
Where 1-inch CPVC piping is installed horizontally in a hydronic piping system, it shall be supported at maximum intervals of what?
3 feet
M 1206.10
Valves used in a hydronic piping system shall be rated for the ______________ and ___________ of the system in which the valves are installed.
Temperatures and pressures
M 1202.6
Joints and connections shall be tight for the __________ of the hydronic system.
Pressure
M 1203.1
In the preparation of pipe ends of hydronic piping, the ends shall not be what?
Undercut
M 1203.2
Mechanical joints in hydronic piping shall be installed per the what?
Manufacturers instructions
M 1203.3.2
A pipe in a hydronic system in which the exterior temperature exceeds 250 degrees F shall have a minimum clearance of ______ inch to combustible materials.
1 inch
M 1206.5
In the joints of a PEX tubing system, soldering on the metal portion of the system shall be performed a minimum of ______ inches from any plastic to metal adapter in the same water line.
18 inches
M 1203.9.2
In other than one and two family dwellings, pipe insulation for hydronic piping installed in buildings shall have a maximum smoke-developed rating of what?
450
M 1204.1
Hydronic piping shall be insulated to the thickness required by the what?
International Energy Conservation Code
M 1204.2
The minimum duration of the test of a hydronic piping system shall be what?
15 minutes
M 1208.1
In a hydronic piping system, shutoff valves shall be installed on _______ ________ of a pressure-reducing valve.
Both sides
M 1205.1.4
Openings for hydronic pipe penetrations through concrete or masonry building elements shall be what?
Sleeved
M 1206.4
Provisions shall be made to prevent the formation of _____________ on the exterior of the hydronic piping.
Condensation
M 1206.11
The flash point of transfer fluid in a hydronic piping system shall be a minimum of _______ degrees F above the maximum system operating temperature.
50 degrees F
M 1207.1
The transfer fluid in a hydronic piping system shall be compatible with the ___________ __________ supplied to the system.
Makeup water
M 1207.2
When testing a plastic pipe ground source heat pump loop system, if the actual flow rate or pressure drop values differ from the calculated design value by more than ______________ the problem shall be identified and corrected.
10 percent
M 1210.10
Embedded piping for heating panels, when of approved plastic pipe or tubing, shall be rated at 100 psi at what temperature?
180 degrees F
M 1209.1
In fuel oil piping systems, all exterior above-grade fill piping shall be _________ when tanks are abandoned or removed.
Removed
M 130
Nonmetallic fuel oil pipe shall comply with what standard?
ASTM D2996
M Table 1302.3
When an appliance that burns oil is served by a tank, any part of which is above the burner inlet connection, and where the fuel supply line is taken from the top of the tank, an approved anti-siphon valve or other siphon-breaking device shall be installed in lieu of the what?
Shutoff valve
M 1301.4
All fuel oil piping materials shall be rated for the operating _____________ and ____________ of the system and shall be compatible with the type of liquid.
Temperatures
Pressures
M 1302.2
Nonmetallic fuel oil pipe shall be installed only where?
Outdoors and underground
M 1302.4
Pipe bends made in fuel oil piping shall not exceed the ____________ limitations of the pipe.
Structural
M 1302.6
Pumps installed as a portion of a fuel oil piping system shall automatically shut off the oil supply when what?
Not in operation
M 1302.7
Joints and connections in fuel oil piping systems shall be approved and __________ fittings shall not be used.
Cast-iron
M 1303.1
Joints between different metallic piping materials used in a fuel oil piping system shall be made with approved ____________ fittings or _______________ converter fittings.
Dielectric
Copper-alloy
M 1303.1.1
Unions or other fittings requiring sweat fittings employing solder having a melting point of less than _________ degrees F shall not be used in oil lines.
1000 degrees F
M 1303.1
Joints between steel fuel oil pipe shall be by any of the following methods except what?
A. welded
B. press-connect
C. mechanical
D. brazed
D. brazed
M 1303.7
Unless otherwise approved, mechanical joints for steel fuel oil piping shall be installed where?
outdoors, underground
M 1303.7.1
Fuel oil piping, other than tubing, connected to underground tanks, except straight fill lines and test wells, shall be provided with ___________ connectors unless properly arranged for tank settlement.
flexible
M 1303.9
The minimum size of tubing used as a supply line for a fuel oil system shall be _____ inch OD.
3/8 inch
M 1305.1
Steel pipe used in fuel oil piping system shall be supported horizontally at maximum ______ foot intervals.
12 foot
M 1304.1 to M Table 305.4
In a fuel oil piping system, valves shall not be installed on what piping?
return piping
M 1305.4
A fill pipe for fuel oil shall terminate outside of a building at a point a minimum of _____ feet from any building opening on the same level or lower.
2 feet
M 1305.6
Vent pipes from fuel oil tanks containing heaters shall be extended to a location where oil vapors discharging from the vent will what?
be readily diffused
M 1305.7
IMC Chapter 14 specifically regulates the design and installation intended to use solar thermal energy for space heating and cooling, domestic hot water heating, swimming pool heating or what?
process heating
M 1401.1
Potable water supplies to solar systems shall be protected against contamination in accordance with the what?
International Plumbing Code
M 1401.2
Where all solar system piping is a part of the potable water distribution system and all components of the solar system piping are listed for potable use, cross-connection protection measures are what?
not required
M 1401.2 See Exception
Heat exchangers used in domestic water heating systems shall be approved for what?
for the intended use
M 1401.3
Heat exchangers for solar energy systems shall have adequate protection to ensure that the portability of the water supply and distribution system is what?
properly safeguarded
M 1401.3
Equipment and appliances in solar thermal systems shall be installed in accordance with the _____________ _____________ and ICC 900/SRCC 300.
manufacturer’s instructions
M 1401.4
