ICC IMC Commentary 2012

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International Mechanical Code and Commentary

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ICC	2012	499

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This comprehensive publication provides a convenient reference for regulations in the 2012 International Mechanical Code

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PDF Pages	PDF Title
1	2012 IMC® CODE AND COMMENTARY
2	2012 IMC® CODE AND COMMENTARY
3	COPYRIGHT
4	PREFACE
8	CHAPTER 1: SCOPE AND ADMINISTRATION
9	PART 1–SCOPE AND APPLICATION SECTION 101 GENERAL SECTION 102 APPLICABILITY
12	PART 2–ADMINISTRATION AND ENFORCEMENT SECTION 103 DEPARTMENT OF MECHANICAL INSPECTION SECTION 104 DUTIES AND POWERS OF THE CODE OFFICIAL
14	SECTION 105 APPROVAL
15	SECTION 106 PERMITS
19	SECTION 107 INSPECTIONS AND TESTING
22	SECTION 108 VIOLATIONS
24	SECTION 109 MEANS OF APPEAL
26	SECTION 110 TEMPORARY EQUIPMENT, SYSTEMS AND USES
27	BIBLIOGRAPHY
28	CHAPTER 2: DEFINITIONS SECTION 201 GENERAL SECTION 202 GENERAL DEFINITIONS
32	FIGURE: 202(1) BREATHING ZONE
35	FIGURE: 202(2) COMMERCIAL KITCHEN HOODS
55	FIGURE: 202(3) THERMAL RESISTANCE
57	BIBILIOGRAPHY
58	CHAPTER 3: GENERAL REGULATIONS SECTION 301 GENERAL
62	FIGURE: 301.9 TYPICAL LABEL FOR A CATGORY I GAS-FIRED FURNACE (Courtesy of Trane and American-Standard Company)
64	SECTION 302 PROTECTION OF STRUCTURE
65	FIGURE 302.3.1 HOLES AND NOTCHES IN WOOD JOISTS
66	FIGURE 302.3.2 NOTCHES IN WOOD STUDS FIGURE 302.3.3 BORED HOLES
67	SECTION 303 EQUIPMENT AND APPLIANCE LOCATION
69	SECTION 304 INSTALLATION
70	FIGURE 304.1 EXCERPTS FROM TYPICAL MANUFACTURER’S INSTALLATION MANUALS (Courtesy of Trane and American-Standard Company)
71	FIGURE 304.1—continued EXCERPTS FROM TYPICAL MANUFACTURER’S INSTALLATION MANUALS (Courtesy of Trane and American-Standard Company)
72	FIGURE 304.3 OIL-FIRED WATER HEATER INSTALLATION IN A HAZARDOUS LOCATION
74	FIGURE 304.5.1.1 NATURAL VENTILATION OF SPACES CONTAINING HYDROGEN GENERATING APPLIANCES
75	FIGURE 304.6(1) APPLIANCE INSTALLATION IN A PUBLIC GARAGE
77	FIGURE 304.6(2) APPLIANCE PROTECTION AGAINST MOTOR VEHICLE IMPACT
78	FIGURE 304.7 SUSPENDED APPLIANCE IN RESIDENTIAL GARAGE
79	SECTION 305 PIPING SUPPORT
80	FIGURE 305.4 POINT OF SAG BETWEEN HANGERS FIGURE 304.11 GUARD REQUIREMENTS
81	SECTION 306 ACCESS AND SERVICE SPACE TABLE 305.4 PIPING SUPPORT SPACING
82	FIGURE 305.5 PIPE PROTECTION
83	FIGURE 306.3 REMOTE LOCATION REQUIREMENTS (ATTIC INSTALLATION)
85	FIGURE 306.5(1) ACCESS HEIGHT ABOVE GRADE
86	FIGURE 306.5(2) APPLIANCE ACCESS
87	FIGURE 306.5.1 APPLIANCES AND EQUIPMENT ON SLOPED ROOFS SECTION 307 CONDENSATE DISPOSAL
88	TABLE 307.2.2 CONDENSATE DRAIN SIZING
89	FIGURE 307.2.3(1) PRIMARY AND AUXILIARY DRAIN PAN FLOAT SWITCH (Courtesy of SMD Research, Inc.)
90	FIGURE 307.2.3(2) CONDENSATE OVERFLOW SWITCH (Courtesy of SMD Research, Inc.) FIGURE 307.2.3(3) IN-LINE CONDENSATE OVERFLOW SWITCH (Courtesy of SMD Research, Inc.) FIGURE 307.2.3.2 APPLIANCES, EQUIPMENT AND INSULATION IN PANS
91	SECTION 308 CLEARANCE REDUCTION FIGURE 308.1(1) CLEARANCE TO COMBUSTIBLES—EXAMPLES OF HOW TO MEASURE
92	FIGURE 308.1(2) REDUCED CLEARANCE FOR 3 1/2-INCH BRICK WALL FIGURE 308.1(3) VENTILATED MASONRY CLEARANCE REDUCTION SYSTEM
93	FIGURE 308.2 TYPICAL CLEARANCES FOR A RADIANT-TYPE WOOD-BURNING STOVE
94	FIGURE 308.3 REDUCED CLEARANCE TO COMBUSTIBLES
95	TABLE 308.6 CLEARANCE REDUCTION METHODS
96	FIGURE 308.6(1) REDUCED CLEARANCE TO COMBUSTIBLES
97	FIGURE 308.6(2) CLEARANCE TO COMBUSTIBLES FIGURE 308.6(3) CLEARANCE TO COMBUSTIBLES
98	FIGURE 308.6(4) CLEARANCE TO COMBUSTIBLES
99	[B] SECTION 309 TEMPERATURE CONTROL [F] SECTION 310 EXPLOSION CONTROL [F] SECTION 311 SMOKE AND HEAT VENTS SECTION 312 HEATING AND COOLING LOAD CALCULATIONS
100	BIBLIOGRAPHY
102	CHAPTER 4: VENTILATION
103	SECTION 401 GENERAL
105	FIGURE 401.4(1) INTAKE OPENING FIGURE 401.4(2) INTAKE OPENING
106	TABLE 401.5 OPENING SIZES IN LOUVERS, GRILLES AND SCREENS PROTECTING AIR INTAKE OPENINGS SECTION 402 NATURAL VENTILATION
107	FIGURE 402.2 NATURAL LIGHT AND VENTILATION WINDOWS
108	FIGURE 402.3 NATURAL VENTILATION FROM ADJOINING SPACE FIGURE 402.4 VENTILATION OPENINGS BELOW GRADE
109	SECTION 403 MECHANICAL VENTILATION FIGURE 403.1(1) AN ENERGY-CONSERVING ALTERNATIVE TO NATURAL VENTILATION
110	FIGURE 403.1(2) TYPICAL HVAC SYSTEM
111	FIGURE 403.1(3) OCCUPIED ZONE
116	FIGURE 403.3 NAIL SALON STATIONS
117	EQUATION 4-1 TABLE 403.3.1.2 ZONE AIR DISTRIBUTION EFFECTIVENESS EQUATION 4-2
118	EQUATION 4-3 EQUATION 4-4 EQUATION 4-5
119	TABLE 403.3 MINIMUM VENTILATION RATES
120	TABLE 403.3—continued MINIMUM VENTILATION RATES
121	TABLE 403.3—continued MINIMUM VENTILATION RATES
122	TABLE 403.3.2.3.2 SYSTEM VENTILATION EFFICIENCY EQUATION 4-6 EQUATION 4-7 EQUATION 4-8
129	SECTION 404 ENCLOSED PARKING GARAGES SECTION 405 SYSTEMS CONTROL
130	SECTION 406 VENTILATION OF UNINHABITED SPACES BIBLIOGRAPHY
132	CHAPTER 5: EXHAUST SYSTEMS SECTION 501 GENERAL
135	FIGURE 501.3.1(1) SEPARATION REQUIREMENTS FOR ROOF EXHAUST (EXPLOSIVE OR FLAMMABLE) DUCT TERMINATIONS FIGURE 501.3.1(2) SEPARATION REQUIREMENTS FOR ROOF EXHAUST (EXPLOSIVE OR FLAMMABLE) DUCT TERMINATIONS
138	SECTION 502 REQUIRED SYSTEMS
141	EQUATION 5-1
156	FIGURE 502.14(1) OVERHEAD SOURCE CAPTURE SYSTEM
157	FIGURE 502.14(2) WALL-MOUNTED SOURCE CAPTURE SYSTEM
158	SECTION 503 MOTORS AND FANS
160	SECTION 504 CLOTHES DRYER EXHAUST
161	FIGURE 504.2 NONCOMBUSTIBLE WALL RECEPTACLE FOR CLOTHES DRYER EXHAUST DUCT
165	TABLE 504.6.4.1 DRYER EXHAUST DUCT FITTING EQUIVALENT LENGTH FIGURE 504.6.4.1 CLOTHES DRYER EXHAUST DUCT LENGTH
166	FIGURE 504.6.5 EXAMPLE OF PERMANENT LABEL OF EQUIVALENT LENGTH
167	FIGURE 504.6.6 DOMESTIC CLOTHES DRYER ROUGH-IN FIGURE 504.6.7 DRYER EXHAUST DUCT PROTECTION
168	FIGURE 504.7 MULTIPLE DRYER EXHAUST SYSTEM
170	SECTION 505 DOMESTIC KITCHEN EXHAUST EQUIPMENT
171	SECTION 506 COMMERCIAL KITCHEN HOOD VENTILATION SYSTEM DUCTS AND EXHAUST EQUIPMENT
173	FIGURE 506.3.1.1(1) TYPICAL FACTORY-BUILT GREASE DUCT LABEL (Photo courtesy of Selkirk, L.L.C.) FIGURE 506.3.1.1(2) FACTORY-BUILT GREASE DUCTS (Photo courtesy of Selkirk, L.L.C.)
174	FIGURE 506.3.1.2(1) PROHIBITED INSTALLATION OF FLEXIBLE AIR DUCT CONNECTING TO A MAKEUP AIR PLENUM ABOVE A TYPE I HOOD FIGURE 506.3.1.2(2) BACKWALL MAKEUP AIR PLENUM
175	FIGURE 506.3.2.1(1) TYPES OF DUCT JOINTS
176	FIGURE 506.3.2.1(2) WELDED FLANGE JOINT (Photo courtesy of Guy McMann)
177	FIGURE 506.3.2.2 DUCT-TO-HOOD JOINTS
179	FIGURE 506.3.6 PROHIBITED INSTALLATION OF A GREASE DUCT (Less than 18-inch clearance to combustibles)
180	FIGURE 506.3.7 PREVENTION OF GREASE ACCUMULATION
181	FIGURE 506.3.7.1(1) GREASE COLLECTION RESERVOIR (Notice that there is no cleanout) (Photo courtesy of Guy McMann)
182	FIGURE 506.3.7.1(2) GREASE RESERVOIR
183	FIGURE 506.3.8(1) GREASE DUCT CLEANOUT FIGURE 506.3.8(2) GREASE DUCT CLEANOUT
185	FIGURE 506.3.10 UNDERGROUND GREASE DUCT
186	FIGURE 506.3.11 TERMINATION THROUGH EXTERIOR WALLS
187	FIGURE 506.3.11.1(1) EXHAUST DUCT ENCLOSED BY A VERTICAL SHAFT
188	FIGURE 506.3.11.1(2) EXHAUST DUCT PENETRATING A WALL
189	FIGURE 506.3.11.2(1) FIELD-APPLIED GREASE DUCT ENCLOSURE (Photo courtesy of Guy McMann)
190	FIGURE 506.3.11.2(2) PARTIAL APPLICATION OF FIELD-APPLIED GREASE DUCT ENCLOSURE (PROHIBITED)
193	FIGURE 506.5.1(1) ROOF-MOUNTED EXHAUST FAN FOR A TYPE I HOOD (Notice that the duct does not extend 18 inches above the roof surface) FIGURE 506.5.1(2) INLINE EXHAUST FAN FOR A TYPE I HOOD
194	FIGURE 506.5.3 KITCHEN EXHAUST FAN MOUNTED 18 INCHES ABOVE THE ROOF SURFACE WITH VENTS FOR THE SHAFT (Photo courtesy of Guy McMann)
195	FIGURE 506.5.5 EXHAUST OUTLET TERMINATION SECTION 507 COMMERCIAL KITCHEN HOODS
196	FIGURE 507.1(1) TYPICAL LABEL FOR A TYPE I HOOD
197	FIGURE 507.1(2) ELECTRIC DEEP FAT FRYER WITH RECIRCULATING HOOD FIGURE 507.1(3) ELECTRIC GRIDDLE WITH RECIRCULATING HOOD
198	FIGURE 507.2(1) HIBACHI TABLE WITH INTEGRAL DOWN-DRAFT EXHAUST SYSTEM (Photo courtesy of Roaster Tech, Inc.)
199	FIGURE 507.2(2) DOWN-DRAFT EXHAUST SYSTEM (Figure courtesy of Roaster Tech, Inc.)
203	FIGURE 507.2.2 TYPE II HOOD ABOVE A DISHWASHER (Photo courtesy of Guy McMann)
205	FIGURE 507.3 WATER HEATER NEXT TO A TYPE I HOOD (Photo courtesy of Guy McMann)
206	FIGURE 507.8 GREASE GUTTER WITH RESERVOIR
208	FIGURE 507.10 GREASE DUCT ENCLOSURE SYSTEM USED ON THE TOP OF A TYPE I HOOD (Prohibited)
209	TABLE 507.11 MINIMUM DISTANCE BETWEEN THE LOWEST EDGE OF A GREASE FILTER AND THE COOKING SURFACE OR THE HEATING SURFACE FIGURE 507.11 APPLIANCE VENTING UNDERNEATH A TYPE I HOOD
210	FIGURE 507.11.2(1) MINIMUM ANGLE OF GREASE FILTERS
211	FIGURE 507.11.2(2) GREASE FILTER MOUNTED AT MINIMUM ANGLE OF 45 DEGREES (Photo courtesy of Guy McMann) FIGURE 507.12(1) CANOPY HOOD—ELEVATION FIGURE 507.12(2) WALL-TYPE CANOPY HOOD
212	FIGURE 507.12(3) WALL-TYPE CANOPY HOOD WITH MAKEUP AIR FIGURE 507.12(4) ISLAND-TYPE CANOPY HOOD FIGURE 507.12(5) BACK-TO-BACK (DOUBLE ISLAND)-TYPE CANOPY HOOD
213	FIGURE 507.12(6) CANOPY HOOD WITH SIDE PANELS—SIDE VIEW FIGURE 507.12(7) CANOPY HOOD WITH SIDE PANELS—ELEVATION
214	FIGURE 507.13(1) CANOPY HOOD SERVING MULTIPLE APPLIANCES
215	FIGURE 507.13(2) BACKSHELF/PASS-OVER HOOD FIGURE 507.13(3) BACKSELF HOOD WITH ONE SIDE PANEL (Photo courtesy of Guy McMann)
216	FIGURE 507.13.1 HOOD APPLIANCE PLAN VIEW
217	FIGURE 507.14 NONCANOPY-TYPE HOOD (LOW-WALL OR BACKSHELF)
218	SECTION 508 COMMERCIAL KITCHEN MAKEUP AIR
220	FIGURE 508.1(1) MAKEUP AIR FIGURE 508.1(2) MAKEUP AIR
221	FIGURE 508.1(3) MAKEUP AIR SUPPLIED FROM FACE OF HOOD FIGURE 508.1(4) MAKEUP AIR SUPPLIED TO HOOD (Short-circuit hood)
222	SECTION 509 FIRE SUPPRESSION SYSTEMS
223	FIGURE 509.1 SUPPRESSION SYSTEM FOR COMMERCIAL-TYPE COOKING EQUIPMENT SECTION 510 HAZARDOUS EXHAUST SYSTEMS
231	TABLE 510.8 MINIMUM DUCT THICKNESS FIGURE 510.8.1 DUCT JOINTS
232	TABLE 510.8.2 CLEARANCE TO COMBUSTIBLES
233	SECTION 511 DUST, STOCK AND REFUSE CONVEYING SYSTEMS
234	SECTION 512 SUBSLAB SOIL EXHAUST SYSTEMS
235	TABLE 511.2 CONSTRUCTION, CLEARANCE AND TERMINATION REQUIREMENTS FOR SINGLE-WALL METAL CHIMNEYS
236	SECTION 513 SMOKE CONTROL SYSTEMS
239	FIGURE 513.4.1 STACK EFFECT
243	EQUATION 5-2
244	EQUATION 5-3
245	FIGURE 513.8(1) SMOKE LAYER INTERFACE
246	FIGURE 513.8(2) AXISYMMETRICAL PLUME FIGURE 513.8(3) BALCONY SPILL PLUME
247	FIGURE 513.8(4) WINDOW PLUME FIGURE 513.8(5) PLUGHOLING
248	FIGURE 513.8.1(1) EXAMPLE, CRITICAL LEVEL OF SMOKE
249	FIGURE 513.8.1(2) SMOKE LAYER
251	EQUATION 5-4
256	SECTION 514 ENERGY RECOVERY VENTILATION SYSTEMS
257	BIOGRAPHY
258	CHAPTER 6: DUCT SYSTEMS SECTION 601 GENERAL
259	FIGURE 601.2(1) POSITIVE PRESSURE IN CORRIDOR PROVIDES MAKEUP AIR FOR SMALL EXHAUST FANS IN ADJACENT ROOMS
260	FIGURE 601.2(2) ELEVATION VIEW FOR COMMENTARY FIGURE 601.2(1)
261	FIGURE 601.2.1(1) CORRIDOR NOT FIRE-RESISTANCE RATED: SPACE ABOVE CEILING CAN BE USED AS A PLENUM
262	FIGURE 601.2.1(2) SPACE ABOVE CEILING PROHIBITED FROM BEING USED AS A PLENUM FIGURE 601.2.1(3) FIRE-RESISTANCE-RATED CEILING IN CORRIDOR: SPACE ABOVE CEILING CAN BE USED AS A PLENUM
263	FIGURE 601.2.1(4) FIRE-RESISTANCE-RATED CORRIDOR WITH SUSPENDED NONRATED CEILING (Allowed if smoke detectors or sprinkler water flow detectors shut down the air handler) FIGURE 601.2.1(5) SPACE ABOVE CEILING CAN BE USED AS A PLENUM IF PART OF AN ENGINEERED SMOKE CONTROL SYSTEM
264	SECTION 602 PLENUMS
265	FIGURE 602.1(1) TYPICAL FLOOR/CEILING OR ROOF/CEILING RETURN AIR PLENUM FIGURE 602.1(2) MECHANICAL ROOM USED AS RETURN AIR PLENUM
266	FIGURE 602.1(3) PROHIBITED RETURN AIR PLENUM APPLICATION
271	FIGURE 602.3(1) ACCEPTABLE STUD AND JOIST SPACE PLENUM INSTALLATION SECTION 603 DUCT CONSTRUCTION AND INSTALLATION
272	FIGURE 602.3(2) PROHIBITED STUD AND JOIST SPACE PLENUM INSTALLATION
273	TABLE 603.4 DUCT CONSTRUCTION MINIMUM SHEET METAL THICKNESSES FOR SINGLE DWELLING UNITS
275	FIGURE 603.6(1) FLEXIBLE CONNECTOR
276	FIGURE 603.6(2) SAMPLE LABELS (Courtesy of ATCO Rubber Products, Inc.) FIGURE 603.6(3) SAMPLE LABELS (Courtesy of ATCO Rubber Products, Inc.) TABLE 603.6 TESTING OF FLEXIBLE AIR DUCTS AND CONNECTORS (Source: UL 181)
277	FIGURE 603.6(4) INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
278	FIGURE 603.6(4)—continued INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
279	FIGURE 603.6(4)—continued INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
280	Figure 603.6(4)—continued INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
281	FIGURE 603.6(4)—continued INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
282	FIGURE 603.6(4)—continued INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
283	FIGURE 603.6(4)—continued INSTALLATION INSTRUCTIONS FOR FLEXIBLE AIR DUCTS AND AIR CONNECTORS (Courtesy of Air Diffusion Council)
285	FIGURE 603.7 FURNACE DUCTS IN PRIVATE GARAGE
287	FIGURE 603.9 TYPICAL HVAC METAL DUCT JOINTS REQUIRING SEALING
289	SECTION 604 INSULATION
290	FIGURE 603.17(1) AIR DISPERSION SYSTEM (Photo courtesy of DuctSox, Inc.) FIGURE 603.17(2) AIR DISPERSION SYSTEM (Photo courtesy of DuctSox, Inc.)
291	FIGURE 604.3 DUCT COVERINGS AND LININGS
293	SECTION 605 AIR FILTERS
294	SECTION 606 SMOKE DETECTION SYSTEMS CONTROL
295	FIGURE 606.2(1) AIR DISTRIBUTION SYSTEM SERVING NOT MORE THAN ONE SPACE
296	FIGURE 606.2(2) AIR DISTRIBUTION SYSTEM SERVING MORE THAN ONE SPACE FIGURE 606.2.1 SMOKE DETECTOR REQUIRED IN RETURN AIR SYSTEMS WITH FLOW GREATER THAN 2000 CFM
297	FIGURE 606.2.2(1) LOCATION OF SMOKE DETECTORS IN COMMON RETURN AIR PLENUM
298	FIGURE 606.2.2(2) LOCATION OF SMOKE DETECTOR, EXCEPTION ITEM 1
299	FIGURE 606.2.2(3) TYPICAL FAN-POWERED TERMINAL UNIT FIGURE 606.2.3 RETURN RISER
300	SECTION 607 DUCT AND TRANSFER OPENINGS
302	FIGURE 607.1(1) FIRE DAMPER (Courtesy of Ruskin Air and Sound Control) FIGURE 607.1(2) SMOKE DAMPER (Courtesy of Ruskin Air and Sound Control)
303	FIGURE 607.1(3) COMBINATION FIRE/SMOKE DAMPER (Courtesy of Ruskin Air and Sound Control) FIGURE 607.1(4) CEILING DAMPERS (Courtesy of Ruskin Air and Sound Control)
304	FIGURE 607.1(5) FIRE DAMPER IN WALL FRAME (Courtesy of Ruskin Air and Sound Control)
306	FIGURE 607.3 DYNAMIC RATED FIRE DAMPERS TABLE 607.3.2.1 FIRE DAMPER RATING
308	FIGURE 607.3.3.2(1) LOCATION OF SMOKE DETECTORS IN DUCTS NEAR SMOKE/FIRE DAMPERS
309	FIGURE 607.3.3.2(2) LOCATION OF SMOKE DETECTORS NEAR SMOKE/FIRE DAMPERS IN AIR TRANSFER OPENING
310	FIGURE 607.5 FIRE DAMPERS IN RATED WALL
311	FIGURE 607.5.2 EXCEPTION 3: FIRE DAMPERS NOT REQUIRED WHERE DUCT IS 26 GAGE METAL AND CONTINUOUS
313	FIGURE 607.5.3(1) FIRE DAMPERS NOT REQUIRED—EXCEPTION 1 FIGURE 607.5.3(2) FIRE DAMPERS NOT REQUIRED—EXCEPTION 3
316	FIGURE 607.5.5(1) ACCEPTABLE METHOD OF SUBDUCTING FIGURE 607.5.5(2) PROHIBITED METHOD OF SUBDUCTING
317	FIGURE 607.5.5.1(1) VERTICAL SHAFT—BOTTOM ENCLOSURE FIGURE 607.5.5.1(2) VERTICAL SHAFTS—BOTTOM ENCLOSURES ROOM
318	FIGURE 607.5.5.1(3) VERTICAL SHAFTS—BOTTOM ENCLOSURES WITH DRAFTSTOPPING FIGURE 607.5.5.1(4) VERTICAL SHAFTS—BOTTOM ENCLOSURES WITH FIRE SPRINKLERS
319	FIGURE 607.5.5.1(5) VERTICAL SHAFTS—BOTTOM ENCLOSURES
320	FIGURE 607.5.7(1) SMOKE DAMPER REQUIRED IN AIR TRANSFER OPENING IN A SMOKE PARTITION FIGURE 607.5.7(2) SMOKE DAMPER NOT REQUIRED WHERE AIR TRANSFER OPENING IS DUCTED
321	FIGURE 607.5.7(3) SMOKE DAMPER NOT REQUIRED WHERE AIR TRANSFER OPENING IS DUCTED FIGURE 607.6.1(1) AIR DUCT PENETRATION OF A FIRE-RESISTANCE-RATED FLOOR/CEILING ASSEMBLY
322	FIGURE 607.6.1(2) EXCEPTION: FIRE DAMPERS NOT REQUIRED AT EVERY FLOOR
324	FIGURE 607.6.3(1) DUCT PENETRATION OF NONFIRE-RESISTANCE-RATED ASSEMBLIES BIBLIOGRAPHY
325	FIGURE 607.6.3(2) FIRE DAMPERS IN DUCTS PENETRATING NONFIRE-RESISTANCE-RATED ASSEMBLIES
326	CHAPTER 7: COMBUSTION AIR SECTION 701 GENERAL
328	CHAPTER 8: CHIMNEYS AND VENTS SECTION 801 GENERAL
333	FIGURE 801.18.1 APPLIANCE REPLACEMENTS AFFECTING EXISTING APPLIANCES
334	SECTION 802 VENTS
335	TABLE 802.2 VENT APPLICATION
336	SECTION 803 CONNECTORS
338	TABLE 803.9(1) MINIMUM CHIMNEY CONNECTOR THICKNESS FOR LOW-HEAT APPLIANCES TABLE 803.9(2) MINIMUM CHIMNEY CONNECTOR THICKNESS FOR MEDIUM- AND HIGH-HEAT APPLIANCE
339	FIGURE 803.10.3(1) CHIMNEY CONNECTOR INSTALLATION FIGURE 803.10.3(2) CHIMNEY CONNECTOR INSTALLATION WITH THIMBLE
340	TABLE 803.10.4 CHIMNEY CONNECTOR SYSTEMS AND CLEARANCES TO COMBUSTIBLE WALL MATERIALS FOR DOMESTIC HEATING APPLIANCES
341	FIGURE 803.10.4 CHIMNEY CONNECTOR SYSTEMS TABLE 803.10.6 CONNECTOR CLEARANCES TO COMBUSTIBLES
342	FIGURE 803.10.4—continued CHIMNEY CONNECTOR SYSTEMS
343	SECTION 804 DIRECT-VENT, INTEGRAL VENT AND MECHANICAL DRAFT SYSTEMS FIGURE 804.1 DIRECT VENT APPLIANCE
344	FIGURE 804.3(1) TYPICAL EXHAUSTER APPLICATIONS (Courtesy of Tjernlund Products, Inc.) FIGURE 804.3(2) TYPICAL POWER EXHAUSTER (Courtesy of Tjernlund Products, Inc.) FIGURE 804.3(3) EXHAUSTER AND CONTROL PACKAGE (Courtesy of Tjernlund Products, Inc.)
345	FIGURE 804.3(4) DRAFT INDUCER (Courtesy of Tjernlund Products, Inc.) FIGURE 804.3.1 DRAFT CONDITIONS WITH EQUIPMENT BURNER-INLET BLOWER (Courtesy of Selkirk Metalbestos)
346	FIGURE 804.3.2 SIMPLIFIED SAMPLE INTERLOCK CIRCUIT DIAGRAM FOR APPLIANCE SERVED BY POWER EXHAUSTER (Shown for illustrative purpose only)
347	FIGURE 804.3.4(1)EXHAUSTER TERMINATIONS
348	FIGURE 804.3.4(2) HORIZONTAL EXHAUSTER TERMINATION
349	FIGURE 804.3.6 PROHIBITED APPLIANCE CONNECTIONON DISCHARGE SIDE OF POWER EXHAUSTER
350	SECTION 805 FACTORY-BUILT CHIMNEYS FIGURE 805.1(1) SAMPLE FACTORY-BUILT CHIMNEY LABELS (Courtesy of Selkirk Metalbestos)
351	FIGURE 805.1(1)—continued SAMPLE FACTORY-BUILT CHIMNEY LABELS (Courtesy of Selkirk Metalbestos)
352	FIGURE 805.1(2) FACTORY-BUILT CHIMNEY COMPONENTS (Courtesy of Selkirk Metalbestos)
353	FIGURE 805.1(3) LOW-HEAT CHIMNEY TERMINATION
354	FIGURE 805.1(4) WIND EFFECT ON CHIMNEY TERMINATION
355	FIGURE 805.3 CHIMNEY OFFSET LIMITATION
356	FIGURE 805.6 DECORATIVE SHROUDS SECTION 806 METAL CHIMNEYS BIBLIOGRAPHY
358	CHAPTER 9: SPECIFIC APPLIANCES, FIREPLACES AND SOLID FUEL-BURNING EQUIPMENT SECTION 901 GENERAL
359	SECTION 902 MASONRY FIREPLACES SECTION 903 FACTORY-BUILT FIREPLACES FIGURE 903.1(1) RECESSED WALL FACTORY-BUILT FIREPLACE
360	FIGURE 903.1(2) FREE-STANDING FACTORY-BUILT FIREPLACE
362	SECTION 904 PELLET FUEL-BURNING APPLIANCES SECTION 905 FIREPLACE STOVES AND ROOM HEATERS FIGURE 905.1(1) TYPICAL ROOM HEATER
363	FIGURE 905.1(2) SAMPLE APPLIANCE LABEL (Courtesy of Vermont Casting, Inc.)
364	SECTION 906 FACTORY-BUILT BARBECUE APPLIANCES SECTION 907 INCINERATORS AND CREMATORIES
365	SECTION 908 COOLING TOWERS, EVAPORATIVE CONDENSERS AND FLUID COOLERS SECTION 909 VENTED WALL FURNACES
366	SECTION 910 FLOOR FURNACES
367	SECTION 911 DUCT FURNACES SECTION 912 INFRARED RADIANT HEATERS SECTION 913 CLOTHES DRYERS
368	SECTION 914 SAUNA HEATERS
369	SECTION 915 ENGINE AND GAS TURBINE-POWERED EQUIPMENT AND APPLIANCES SECTION 916 POOL AND SPA HEATERS SECTION 917 COOKING APPLIANCES
370	SECTION 918 FORCED-AIR WARM-AIR FURNACES
372	SECTION 919 CONVERSION BURNERS SECTION 920 UNIT HEATERS SECTION 921 VENTED ROOM HEATERS SECTION 922 KEROSENE AND OIL-FIRED STOVES SECTION 923 SMALL CERAMIC KILNS
373	SECTION 924 STATIONARY FUEL CELL POWER SYSTEMS FIGURE 924.1(1) TYPICAL FUEL CELL COMPONENTS
374	FIGURE 924.1(2) GENERIC FUEL CELL SYSTEM SECTION 925 MASONRY HEATERS SECTION 926 GASEOUS HYDROGEN SYSTEMS
375	SECTION 927 RADIANT HEATING SYSTEMS SECTION 928 EVAPORATIVE COOLING EQUIPMENT
378	CHAPTER 10: BOILERS, WATER HEATERS AND PRESSURE VESSELS SECTION 1001 GENERAL
379	SECTION 1002 WATER HEATERS
380	SECTION 1003 PRESSURE VESSELS
381	SECTION 1004 BOILERS
382	FIGURE 1004.1 STEAM AND HOT WATER BOILER LABEL (Courtesy of Weil-McLain)
383	TABLE 1004.3.1 BOILER TOP CLEARANCES
384	SECTION 1005 BOILER CONNECTIONS
385	FIGURE 1005.1(1) MULTIPLE INDEPENDENT HOT WATER BOILER INSTALLATION (STAGED OPERATION) FIGURE 1005.1(2) MULTIPLE MODULAR UNITS
386	FIGURE 1005.2 TYPICAL REPLACEMENT (MAKEUP) WATER CONNECTIONS TO VARIOUS TYPES OF SYSTEMS SECTION 1006 SAFETY AND PRESSURE RELIEF VALVES AND CONTROLS
387	FIGURE 1006.1 SAFETY VALVE FOR STEAM APPLICATIONS (Courtesy of Watts Regulator Co.) FIGURE 1006.2 PRESSURE RELIEF VALVE FOR HOT WATER APPLICATIONS (Courtesy of Watts Regulator Co.)
390	TABLE 1006.7 COMPARISON OF FLAME DETECTION METHODS (Source – Handbook of HVAC Design)
392	SECTION 1007 BOILER LOW-WATER CUTOFF FIGURE 1007.1(1) ELECTRONIC PROBE-TYPE LOW-WATER CUTOFF CONTROL WITH GAUGE GLASS AND TRI-COCKS FOR STEAM BOILER APPLICATION (Photo courtesy of McDonnell & Miller) FIGURE 1007.1(2) ELECTRONIC PROBE-TYPE LOW-WATER CUTOFF CONTROL FOR HOT WATER BOILER APPLICATION (Photo courtesy of McDonnell & Miller)
393	FIGURE 1007.1(3) ELECTRONIC PROBE-TYPE LOW-WATER CUTOFF CONTROL FOR HOT WATER BOILER APPLICATION (Photo courtesy of McDonnell & Miller) FIGURE 1007.2 SIMPLIFIED SAMPLE WIRING SCHEMATIC FOR BASIC GAS-FIRED BOILER (Intended for illustrative purpose only to depict function of low-water cutoff controls) SECTION 1008 STEAM BLOWOFF VALVE
394	SECTION 1009 HOT WATER BOILER EXPANSION TANK EQUATION 10-1 FIGURE 1009.2(1) CLOSED-TYPE EXPANSION (COMPRESSION) TANK
395	FIGURE 1009.2(2) CLOSED-DIAPHRAGM-TYPE EXPANSION TANK
396	FIGURE 1009.3 OPEN-TYPE EXPANSION TANK SECTION 1010 GAUGES
397	FIGURE 1010.2 STEAM BOILER SIGHT GLASS
398	SECTION 1011 TESTS BIBLIOGRAPHY
400	CHAPTER 11: REFRIGERATION
401	FIGURE 11(1) OZONE DEPLETION PROCESS
402	FIGURE 11(2) COMPRESSION CYCLE FIGURE 11(3) REFRIGERATION SYSTEM EXAMPLE
403	SECTION 1101 GENERAL
405	FIGURE 1101.10(1) INSTALLATION OF LOCKING CAPS FOR REFRIGERANT ACCESS PORT (Photo Courtesy of Novent LLC. & Airtec Products Corporation, Inc.) FIGURE 1101.10(2) REFRIGERANT LOCKING CAPS AND TOOLS (Photo Courtesy of Novent LLC. & Airtec Products Corporation, Inc.)
406	FIGURE 1101.10(3) REFRIGERANT LABELS FOR LOCKING CAPS (Photo Courtesy of Novent LLC. & Airtec Products Corporation, Inc.) FIGURE 1101.10(4) SPECIAL REMOVAL TOOLS FOR REFRIGERANT LOCKING CAPS (Photo Courtesy of Novent LLC. & Airtec Products Corporation, Inc.)
407	SECTION 1102 SYSTEM REQUIREMENTS
408	SECTION 1103 REFRIGERATION SYSTEM CLASSIFICATION
409	FIGURE 1103.1 CLASSIFICATION OF REFRIGERANTS (Source: ASHRAE 15-94)
410	TABLE 1103.1 REFRIGERANT CLASSIFICATION, AMOUNT AND OEL
411	TABLE 1103.1—continued REFRIGERANT CLASSIFICATION, AMOUNT AND OEL
412	TABLE 1103.1—continued REFRIGERANT CLASSIFICATION, AMOUNT AND OEL
413	TABLE 1103.1—continued REFRIGERANT CLASSIFICATION, AMOUNT AND OEL
415	FIGURE 1103.3.1 REFRIGERATION SYSTEM CLASSIFICATION (Source: ASHRAE 15-89)
416	SECTION 1104 SYSTEM APPLICATION REQUIREMENTS
418	TABLE 1104.3.2 MAXIMUM PERMISSIBLE QUANTITIES OF REFRIGERANTS
419	FIGURE 1104.4.2 VOLUME CALCULATION WITH ZONE DAMPERS
420	SECTION 1105 MACHINERY ROOM, GENERAL REQUIREMENTS
422	EQUATION 11-1
423	EQUATION 11-2
424	SECTION 1106 MACHINERY ROOM, SPECIAL REQUIREMENTS
426	SECTION 1107 REFRIGERANT PIPING
428	SECTION 1108 FIELD TEST
430	SECTION 1109 PERIODIC TESTING
432	CHAPTER 12: HYDRONIC PIPING SECTION 1201 GENERAL
433	SECTION 1202 MATERIAL TABLE 1202.4 HYDRONIC PIPE
434	TABLE 1202.4—continued HYDRONIC PIPE
437	TABLE 1202.5 HYDRONIC PIPE FITTINGS
438	FIGURE 1202.7(1) PACKED SLIP EXPANSION JOINT SECTION 1203 JOINTS AND CONNECTIONS
439	FIGURE 1202.7(2) FLEXIBLE BALL JOINT FIGURE 1202.7(3) METAL BELLOWS EXPANSION JOINT FIGURE 1202.7(4) RUBBER EXPANSION JOINT FIGURE 1202.7(5) FLEXIBLE HOSE
440	FIGURE 1203.2 PREPARATION OF PIPE END
442	FIGURE 1203.3.8.1(1) MECHANICALLY FORMED JOINT (Courtesy of T-DRILL Industries, Inc.)
443	FIGURE 1203.3.8.1(2) MECHANICALLY FORMED JOINT—DIMPLE LOCATION (Courtesy of T-DRILL Industries, Inc.)
444	FIGURE 1203.10.1 PB HEAT-FUSED JOINT
445	FIGURE 1203.11.1 COMPRESSION-TYPE MECHANICAL JOINT (Courtesy of Wirsbo Co.)
446	SECTION 1204 PIPE INSULATION
447	SECTION 1205 VALVES
448	FIGURE 1205.1.1 HEAT EXCHANGERS FIGURE 1205.1.2 CENTRAL SYSTEMS FIGURE 1205.1.4 PRESSURE-REDUCING VALVES
449	FIGURE 1205.1.6 EXPANSION TANKS SECTION 1206 PIPING INSTALLATION
451	TABLE 1206.9 PIPE EXPANSION FIGURE 1206.9(1) “L” BEND
452	FIGURE 1206.9(2) “Z” BEND FIGURE 1206.9(3) “U” BEND SECTION 1207 TRANSFER FLUID
453	SECTION 1208 TESTS SECTION 1209 EMBEDDED PIPING
454	BIBLIOGRAPHY
456	CHAPTER 13: FUEL OIL PIPING AND STORAGE SECTION 1301 GENERAL
457	SECTION 1302 MATERIAL
458	FIGURE 1301.5(1) TYPICAL OIL STORAGE TANK BASEMENT INSTALLATION TABLE 1302.3 FUEL OIL PIPING
459	FIGURE 1301.5(2) BASEMENT INSTALLATION WITH TANK REMOVED SECTION 1303 JOINTS AND CONNECTIONS
461	SECTION 1304 PIPING SUPPORT SECTION 1305 FUEL OIL SYSTEM INSTALLATION
463	SECTION 1306 OIL GAUGING
464	SECTION 1307 FUEL OIL VALVES SECTION 1308 TESTING
465	BIBLIOGRAPHY
466	CHAPTER 14: SOLAR SYSTEMS FIGURE 14(1) PASSIVE SOLAR SPACE HEATING FIGURE 14(2) PASSIVE SOLAR HEATING AND COOLING APPLICATION
467	FIGURE 14(3) ACTIVE SPACE AND DOMESTIC WATER HEATING SYSTEM FIGURE 14(4) PASSIVE COLLECTION WITH MECHANICAL DISTRIBUTION
468	SECTION 1401 GENERAL TABLE 1401.3(1) GOSSELIN RATINGS
469	TABLE 1401.3(2) HEAT TRANSFER FLUIDS (ESSENTIALLY NONTOXIC) GOSSELIN RATING OF 1 FIGURE 1401.3 DOUBLE-WALL HEAT EXCHANGER SECTION 1402 INSTALLATION
470	FIGURE 1402.3 DOUBLE ENVELOPE PASSIVE SOLAR HEATING FIGURE 1402.4 FLAT-PLATE SOLAR COLLECTORS
471	FIGURE 1402.5.1 SIMPLIFIED SCHEMATIC OF SOLAR WATER HEATING SYSTEM
472	FIGURE 1402.5.3 SIMPLIFIED SCHEMATIC OF DRAINDOWN FREEZE PROTECTION SYSTEM
473	SECTION 1403 HEAT TRANSFER FLUIDS SECTION 1404 MATERIALS
474	BIBLIOGRAPHY
476	CHAPTER 15: REFERENCED STANDARDS
477	FIGURE 15 REFERENCED STANDARDS
478	ACCA AHRI AMCA ANSI ASHRAE
479	ASME ASSE ASTM
481	AWS AWWA CSA
482	DOL FS ICC
483	IIAR MSS NAIMA NFPA
484	SMACNA UL
486	APPENDIX A: CHIMNEY CONNECTOR PASS-THROUGHS FIGURE A-1 CHIMNEY CONNECTOR SYSTEMS
487	FIGURE A-1—continued CHIMNEY CONNECTOR SYSTEMS
488	APPENDIX B: RECOMMENDED PERMIT FEE SCHEDULE B101 MECHANICAL WORK, OTHER THAN GAS PIPING SYSTEMS B102 FEE FOR REINSPECTION B103 TEMPORARY OPERATION INSPECTION FEE B104 SELF-CONTAINED UNITS LESS THAN 2 TONS
490	INDEX