reglab/statecodes huggingface dataset:
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403248 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory
				Authority:
				RCW
				  19.27A.025,
				19.27A.045, and
				19.27.074. WSR 13-20-120, §
				51-11C-403248, filed 10/1/13, effective 11/1/13. Statutory Authority:
				RCW
				  19.27A.020,
				19.27A.025 and
				chapters
				19.27 and
				34.05 RCW. WSR 13-04-056, §
				51-11C-403248, filed 2/1/13, effective 7/1/13. WSR 13-20-001, §
				51-11C-403248, filed 9/18/2013, effective
				10/19/2013
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403249 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403249, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40325 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40325, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403251 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403251, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403252 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403252, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403253 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403253, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403254 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory
				Authority:
				RCW
				  19.27A.025,
				19.27A.045, and
				19.27.074. WSR 13-20-120, §
				51-11C-403254, filed 10/1/13, effective 11/1/13. Statutory Authority:
				RCW
				  19.27A.020,
				19.27A.025 and
				chapters
				19.27 and
				34.05 RCW. WSR 13-04-056, §
				51-11C-403254, filed 2/1/13, effective 7/1/13. WSR 13-20-001, §
				51-11C-403254, filed 9/18/2013, effective
				10/19/2013
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40326 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40326, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403261 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403261, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40327 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40327, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40328 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40328, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403281 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403281, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40329 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40329, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403291 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory
				Authority:
				RCW
				  19.27A.025,
				19.27A.045, and
				19.27.074. WSR 13-20-120, §
				51-11C-403291, filed 10/1/13, effective 11/1/13. Statutory Authority:
				RCW
				  19.27A.020,
				19.27A.025 and
				chapters
				19.27 and
				34.05 RCW. WSR 13-04-056, §
				51-11C-403291, filed 2/1/13, effective 7/1/13. WSR 13-20-001, §
				51-11C-403291, filed 9/18/2013, effective
				10/19/2013
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403292 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Reviser's note:
The brackets and enclosed
				  material in the text of the above section occurred in the copy filed by the
				  agency and appear in the Register pursuant to the requirements of
				  RCW
				    34.08.040.
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403292, filed 2/1/13, effective 7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403293 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403293, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403294 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403294, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403295 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403295, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40330 - Section C403.3-Equipment selection

Current through Register Vol. 24-14, July 15, 2024
C403.3 Equipment selection.
Heating and cooling
				equipment installed in mechanical systems shall be sized in accordance with
				Section C403.3.1 and shall not be less efficient in the use of energy than as
				specified in Section C403.3.2.
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40330, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40331 - Section C403.3.1-Equipment and system sizing

Current through Register Vol. 24-14, July 15, 2024
C403.3.1 Equipment and system sizing.
The output
				capacity of heating and cooling equipment shall be not greater than that of the
				smallest available equipment size that exceeds the loads calculated in
				accordance with Section C403.1.2. A single piece of equipment providing both
				heating and cooling shall satisfy this provision for one function with the
				capacity for the other function as small as possible, within available
				equipment options.
EXCEPTIONS:
1. Required standby equipment and systems provided with
						  controls and devices that allow such systems or equipment to operate
						  automatically only when the primary equipment is not operating.
2. Multiple units of the same equipment type with
						  combined capacities exceeding the design load and provided with controls that
						  are configured to sequence the operation of each unit based on
						  load.
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40331, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403326 - Table C403.3.2(6)-Minimum efficiency requirements-Gas-fired and oil-fired boilers

Current through Register Vol. 24-14, July 15, 2024
Table C403.3.2(6)
Gas- and Oil-Fired Boilers-Minimum Efficiency
				Requirements
Equipment
						  Typea
Subcategory or Rating
						  Condition
Size Category
						  (Input)
Minimum Efficiency
Test
						  Procedurea
Boilers, hot water
Gas-fired
< 300,000 Btu/hg,h for
						  applications outside the U.S.
82% AFUE
DOE     10 C.F.R. 430     Appendix N
[GREATER THAN EQUAL TO] 300,000 Btu/h and [LESS THAN
						  EQUAL TO] 2,500,000 Btu/he
84%
Et
d
DOE
						  10
						  C.F.R. 431.86
< 2,500,000 Btu/h and [LESS THAN EQUAL TO]
						  10,000,000 Btu/hb
85%
Et
d
10,000,000 Btu/hb
82%
Ec
c
Oil-firedf
< 300,000 Btu/hg,h
84% AFUE
DOE 10 C.F.R. 430 Appendix N
[GREATER THAN EQUAL TO] 300,000 Btu/h and [LESS THAN
						  EQUAL TO] 2,500,000 Btu/he
87%
Et
d
DOE
						  10
						  C.F.R. 431.86
2,500,000 Btu/hb
88%
Ec
c
10,000,000 Btu/hb
84%
Ec
d
Boilers, steam
Gas-fired
< 300,000 Btu/hg
81% AFUE
DOE 10 C.F.R. 430 Appendix N
Gas-fired - all, except natural draft
[GREATER THAN EQUAL TO] 300,000 Btu/h and [LESS THAN
						  EQUAL TO] 2,500,000 Btu/hb
82%
Et
d
DOE
						  10
						  C.F.R. 431.86
2,500,000 Btu/ha
79%
Et
d
10,000,000 Btu/hb
79%
Et
d
Gas-fired - natural draft
[GREATER THAN EQUAL TO] 300,000 Btu/h and [LESS THAN
						  EQUAL TO] 2,500,000 Btu/hb
81%
Et
d
2,500,000 Btu/hb
82%
Et
d
10,000,000 Btu/hb
79%
Et
d
Oil-firedf
< 300,000 Btu/h
82% AFUE
DOE 10 C.F.R. 430 Appendix N
[GREATER THAN EQUAL TO] 300,000 Btu/h and [LESS THAN
						  EQUAL TO] 2,500,000 Btu/hb
84%
Et
d
DOE
						  10
						  C.F.R. 431.86
2,500,000 Btu/hb
85%
Et
d
10,000,000 Btu/hb
81%
Et
d
For SI: 1 British thermal unit per hour = 0.2931 W.
a Chapter 6 contains a complete
				specification of the referenced standards, which include test procedures,
				including the reference year version of the test procedure.
b These requirements apply to boilers
				with rated input of 8,000,000 Btu/h or less that are not packaged boilers and
				to all packaged boilers. Minimum efficiency requirements for boilers cover all
				capacities of packaged boilers.
c
Ec
= Combustion efficiency (100 percent
				less flue losses).
d
Et
= Thermal efficiency.
e Maximum capacity - Minimum and
				maximum ratings as provided for and allowed by the unit's controls.
f Includes oil-fired (residual).
g Boilers shall not be equipped with
				a constant burning pilot light.
h A boiler not equipped with a tankless
				domestic water heating coil shall be equipped with an automatic means for
				adjusting the temperature of the water such that an incremental change in
				inferred heat load produces a corresponding incremental change in the
				temperature of the water supplied.
i This table is a replica of ASHRAE 90.1
				Table 6.8.1-6 Gas- and Oil-Fired Boilers-Minimum Efficiency
				Requirements.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403328 - Table C403.3.2(8)-Electrically operated variable refrigerant flow air conditioners-Minimum efficiency requirements

Current through Register Vol. 24-14, July 15, 2024
Table C403.3.2(8)
Electrically Operated Variable Refrigerant Flow Air
				Conditioners-Minimum Efficiency
				Requirementsb
Equipment Type
Size Category
Heating Section Type
Subcategory or Rating
						  Condition
Minimum Efficiency
Test
						  Procedurea
VRF Air Conditioners, Air Cooled
< 65,000 Btu/h
All
VRF Multi-Split System
13.0 SEER
AHRI 1230
[GREATER THAN EQUAL TO] 65,000 Btu/h and < 135,000
						  Btu/h
Electric Resistance (or none)
VRF Multi-Split System
11.2 EER
15.5 IEER
[GREATER THAN EQUAL TO] 135,000 Btu/h and < 240,000
						  Btu/h
Electric Resistance (or none)
VRF Multi-Split System
11.0 EER
14.9 IEER
[GREATER THAN EQUAL TO] 240,000 Btu/h
Electric Resistance (or none)
VRF Multi-Split System
10.0 EER
13.9 IEER
For SI: 1 British thermal unit per hour = 0.2931 W.
a Chapter 6 contains a complete
				specification of the referenced standards, which include test procedures,
				including the reference year version of the test procedure.
b This table is a replica of ASHRAE 90.1
				Table 6.8.1-8 Electrically Operated Variable-Refrigerant-Flow Air
				Conditioners-Minimum Efficiency Requirements.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40333 - Section C403.3.3-Hot gas bypass

Current through Register Vol. 24-14, July 15, 2024
C403.3.3
Hot gas bypass
			 limitation.
Cooling systems shall not use hot gas bypass or other
			 evaporator pressure control systems unless the system is designed with multiple
			 steps of unloading or continuous capacity modulation. The capacity of the hot
			 gas bypass shall be limited as indicated in Table C403.3.3, as limited by
			 Section C403.5.1.
Table C403.3.3
Maximum Hot Gas Bypass Capacity
Rated Capacity
Maximum Hot Gas BypassCapacity (% of
						totalcapacity)
[LESS THAN EQUAL TO] 240,000 Btu/h
50
[GREATER THAN] 240,000 Btu/h
25
For SI: 1 British thermal unit per hour = 0.2931
				W.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40334 - Section C403.3.4-Boilers

Current through Register Vol. 24-14, July 15, 2024
C403.3.4
Boiler
			 requirements.
Boiler systems
shall comply with the
			 following:
C403.3.4.1
Combustion air
			 positive shut-off.
Combustion air positive shut-off shall be provided on
			 all newly installed
boiler systems
as follows:
1. All
boiler systems
with
			 an input capacity of 2,500,000 Btu/h and above, in which the boiler is designed
			 to operate with a nonpositive vent static pressure.
2. All
boiler systems
where
			 one stack serves two or more boilers with a total combined input capacity per
			 stack of 2,500,000 Btu/h.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40336 - Section C403.3.6-Ventilation for Group R-2 occupancy

Current through Register Vol. 24-14, July 15, 2024
C403.3.6
Ventilation for Group R-2 occupancy.
For all Group R-2 dwelling
			 and sleeping units, a balanced ventilation system with a heat recovery system
			 shall provide outdoor air directly to all habitable spaces. The heat recovery
			 system shall have a 60 percent minimum
sensible recovery
			 effectiveness
as calculated in accordance with Section C403.3.5.1. The
			 ventilation system shall allow for the design flow rates to be tested and
			 verified at each habitable space as part of the commissioning process in
			 accordance with Section C408.2.2.
EXCEPTION:
Heat recovery and energy recovery ventilators (H/ERV)
						  that are rated and listed in accordance with HVI 920 can demonstrate compliance
						  with the sensible recovery effectiveness requirement using the adjusted
						  sensible recovery effectiveness (ASRE) rating of the equipment at 32°F test
						  conditions. Applied flow rate for ASRE rating shall be no less than the design
						  flow rate or the closest value interpolated between two listed flow
						  rates.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40337 - Section C403.3.7-Hydronic system flow rate

Current through Register Vol. 24-14, July 15, 2024
C403.3.7
Hydronic
			 system flow rate.
Chilled water and condenser water piping shall be
			 designed such that the design flow rate in each pipe segment shall not exceed
			 the values listed in Table C403.3.7 for the appropriate total annual hours of
			 operation. Pipe sizes for systems that operate under variable flow conditions
			 (e.g., modulating 2-way control valves at coils) and that contain variable
			 speed pump motors are permitted to be selected from the "Variable Flow/Variable
			 Speed" columns. All others shall be selected from the "Other" columns.
EXCEPTION:
Design flow rates exceeding the values in Table
						  C403.3.7 are permitted in specific sections of pipe if the pipe is not in the
						  critical circuit at design conditions and is not predicted to be in the
						  critical circuit during more than 30 percent of operating hours.
Table C403.3.7
Piping System Design Maximum Flow Rate in
				GPMa
Pipe Size
[LESS THAN EQUAL TO] 2000
						  hours/year
2000 and [LESS THAN EQUAL TO] 4400
						  hours/year
4400 hours/year
(in)
Other
Variable Flow/ Variable Speed
Other
Variable Flow/ Variable Speed
Other
Variable Flow/ Variable Speed
2 1/2
120
180
85
130
68
110
3
180
270
140
210
110
170
4
350
530
260
400
210
320
5
410
620
310
470
250
370
6
740
1100
570
860
440
680
8
1200
1800
900
1400
700
1100
10
1800
2700
1300
2000
1000
1600
12
2500
3800
1900
2900
1500
2300
Maximum velocity for pipes over 14 to 24 in. in
						  size
8.5 ft/s
13.0 ft/s
6.5 ft/s
9.5 ft/s
5.0 ft/s
7.5 ft/s
a There are no requirements for pipe
				sizes smaller than the minimum size or larger than the maximum size shown in
				the table.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40338 - Section C403.3.8-Hydronic coils

Current through Register Vol. 24-14, July 15, 2024
C403.3.8
Hydronic
			 coil selection.
Hydronic coils shall comply with Sections C403.3.8.1 and
			 C403.3.8.2.
EXCEPTION:
Replacement coils within existing
						  equipment.
C403.3.8.1
Chilled-water coil selection.
Chilled-water cooling coils shall be
			 selected to provide a 15°F or higher temperature difference between leaving
			 and entering water temperatures and a minimum of 57°F leaving water
			 temperature at design conditions.
EXCEPTIONS:
1. Chilled-water cooling coils that have an airside
						  pressure drop exceeding 0.70 in. of water when rated at 500 fpm face velocity
						  and dry conditions (no condensation).
2. Individual fan-cooling units with a design supply
						  airflow rate [LESS THAN EQUAL TO] 5000 cfm.
3. Constant-air-volume systems.
4. Coils selected at the maximum temperature difference
						  allowed by the cooling plant equipment manufacturer's approved operating
						  conditions.
5. Passive coils (no mechanically supplied
						  airflow).
6. Coils with design entering chilled-water temperature
						  [GREATER THAN EQUAL TO] 50°F (10°C).
7. Coils with design entering air dry-bulb temperature
						  [LESS THAN EQUAL TO] 65°F (18°C).
C403.3.8.2
Hot-water coil
			 selection.
Hot-water heating coils shall be selected to provide a
			 maximum 20°F temperature difference between leaving and entering water
			 temperatures and a maximum of 118°F (48°C) entering water temperature
			 at design conditions.
EXCEPTIONS:
1. Hot-water heating systems which utilize heat pumps
						  as the primary source.
2. Individual terminal fan units with a design supply
						  airflow rate [LESS THAN EQUAL TO] 1500 cfm are exempt from the 20°F maximum
						  temperature difference between leaving and entering water temperature
						  requirement.
3. Passive coils (no mechanically supplied
						  airflow).
4. Coils with design leaving air temperature [GREATER
						  THAN EQUAL TO] 95°F (35°C).
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40340 - Section C403.4-HVAC system controls

Current through Register Vol. 24-14, July 15, 2024
C403.4
HVAC
			 system controls.
HVAC systems shall be provided with controls in
			 accordance with Sections C403.4.1 through C403.4.12 and shall be capable of and
			 configured to implement all required control functions in this code.
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40340, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-403431 - Reserved

Current through Register Vol. 24-14, July 15, 2024
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-403431, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40345 - Section C403.4.5-Pump isolation

Current through Register Vol. 24-14, July 15, 2024
C403.4.5 Pump isolation.
Chilled water plants
				including more than one chiller shall be capable of and configured to reduce
				flow automatically through the chiller plant when a chiller is shut down and
				automatically shut off flow to chillers that are shut down. Chillers piped in
				series for the purpose of increased temperature differential shall be
				considered as one chiller.
Boiler systems including more than one boiler shall be capable
				of and configured to reduce flow automatically through the boiler system when a
				boiler is shut down.
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40345, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40346 - Section C403.4.6-Variable flow controls

Current through Register Vol. 24-14, July 15, 2024
C403.4.6
Variable flow controls.
Individual pumps required by this code to have variable speed control shall be
			 controlled in one of the following manners:
1. For systems having a combined pump motor
			 horsepower less than or equal to 20 hp (15 kW) and without direct digital
			 control of individual coils, pump speed shall be a function of either:
1.1. Required differential pressure;
			 or
1.2. Reset directly based on
			 zone hydronic demand, or other zone load indicators; or
1.3. Reset directly based on pump power and
			 pump differential pressure; or
1.4.
			 Reset directly by an integral controller based on the relationship between
			 variable speed controller frequency and power.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40347 - Section C403.4.7-Combustion heating equipment controls

Current through Register Vol. 24-14, July 15, 2024
C403.4.7 Combustion heating equipment controls.
Combustion heating equipment with a capacity over 225,000 Btu/h shall have
				modulating or staged combustion control.
EXCEPTIONS:
1. Boilers.
2. Radiant heaters
C403.4.7.1 Combustion decorative vented appliance,
				combustion fireplace and fire pit controls.
Combustion decorative vented
				appliances, combustion fireplaces and fire pits shall be equipped with local
				controls to limit operation to a maximum duration of one hour without override
				hold capability or shall be controlled by occupancy sensor control configured
				with manual on and automatic shutoff within 15 minutes after occupants have
				left the space.
Statutory Authority:
				  RCW
				    19.27A.020,
				  19.27A.025 and
				  chapters
				  19.27 and
				  34.05 RCW. 13-04-056, §
				  51-11C-40347, filed 2/1/13, effective
				  7/1/13.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40348 - Sections C403.4.8 through C403.4.10-Group R requirements

Current through Register Vol. 24-14, July 15, 2024
C403.4.8 Group R-1 hotel/motel guestrooms.
See
				Section C403.7.4.
C403.4.9 Group R-2 and R-3 dwelling units.
The
				primary space conditioning system within each dwelling unit shall be provided
				with at least one programmable thermostat for the regulation of space
				temperature. The thermostat shall allow for, at a minimum, a 5-2 programmable
				schedule (weekdays/weekends) and be capable of providing at least two
				programmable setback periods per day.
Each additional system provided within the dwelling unit shall
				be provided with at least one adjustable thermostat for the regulation of
				temperature.
EXCEPTIONS:
1.Systems controlled by an occupant sensor that is
						  configured to shut the system off when no occupant is sensed for a period of up
						  to 30 minutes.
2.Systems controlled solely by a manually operated
						  timer configured to operate the system for no more than 2 hours.
3.Ductless heat pumps.
Each thermostat shall be capable of being set by adjustment or
				selection of sensors and configured as follows:
1. When used to control heating only:
			 55°F to 75°F.
2. When used
			 to control cooling only: 70°F to 85°F.
3. All other: 55°F to 85°F with an
			 adjustable deadband configured to at least 5°F in accordance with Section
			 C403. 4.1.2.
C403.4.10 Group R-2 sleeping units.
The primary
				space conditioning system within each sleeping unit shall be provided with at
				least one programmable thermostat for the regulation of space temperature. The
				thermostat shall allow for, at a minimum, a 5-2 programmable schedule
				(weekdays/weekends) and be capable of providing at least two programmable
				setback periods per day.
Each additional system provided within the sleeping unit shall
				be provided with at least one adjustable thermostat for the regulation of
				temperature.
EXCEPTIONS:
1. Systems controlled by an occupant sensor that is
						  configured to shut the system off when no occupant is sensed for a period of up
						  to 30 minutes.
2. Systems controlled solely by a manually operated
						  timer configured to operate the system for no more than 2 hours.
3.
Zones
with a full HVAC load demand
						  not exceeding 3,400 Btu/h (1 kW) and having a manual shutoff switch located
						  with
ready access
.
4. Ductless heat pumps.
Each thermostat shall be capable of being set by adjustment or
				selection of sensors and configured as follows:
1. When used to control heating only:
			 55°F to 75°F.
2. When used
			 to control cooling only: 70°F to 85°F.
3. All other: 55°F to 85°F with an
			 adjustable deadband configured to at least 5°F in accordance with Section
			 C403. 4.1.2.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40351 - Section C403.5.1-Integrated economizer control

Current through Register Vol. 24-14, July 15, 2024
C403.5.1 Integrated economizer control.
Economizer
				systems shall be integrated with the mechanical cooling system and be
				configured to provide partial cooling even where additional mechanical cooling
				is required to provide the remainder of the cooling load. Controls shall not be
				capable of creating a false load in the mechanical cooling system by limiting
				or disabling the economizer or any other means, such as hot gas bypass, except
				at the lowest stage of mechanical cooling.
Units that include an air economizer shall comply with the
				following:
1. Unit controls shall have
			 the mechanical cooling capacity control interlocked with the air economizer
			 controls such that the outdoor air damper is at the 100 percent open position
			 when mechanical cooling is on and the outdoor air damper does not begin to
			 close to prevent coil freezing due to minimum compressor run time until the
			 leaving air temperature is less than 45°F (7°C).
2. Direct expansion (DX) units with cooling
			 capacity 65,000 Btu/h (19 kW) or greater of rated capacity shall comply with
			 the following:
2.1. DX units that control the
			 capacity of the mechanical cooling directly based on occupied space temperature
			 shall have not fewer than two stages of mechanical cooling capacity.
2.2. Other DX units, including those that
			 control space temperature by modulating the airflow to the space, shall be in
			 accordance with Table C403.5.1.
Table C403.5.1 DX Cooling Stage Requirements for
				Modulating Airflow Units
Rating Capacity
Minimum Number of Mechanical Cooling Stages
Minimum Compressor
						Displacementa
> 65,000 Btu/h and < 240,000 Btu/h
3 stages
< 35% of full load
>240,000 Btu/h
4 stages
< 25% full load
For SI: 1 British thermal unit per hour = 0.2931 W.
aFor
mechanical
				cooling
stage control that does not use variable compressor
				displacement, the percent displacement shall be equivalent to the mechanical
				cooling capacity reduction evaluated at the full load rating conditions for the
				compressor.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40352 - Section C403.5.2-Economizer heating system impact

Current through Register Vol. 24-14, July 15, 2024
C403.5.2 Economizer heating system impact.
HVAC
				system design and economizer controls shall be such that economizer operation
				does not increase building heating energy use during normal operation.
EXCEPTION:
Economizers on VAV systems that cause
zone
level heating to increase due to a reduction in supply air
						  temperature.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40354 - Section C403.5.4-Waterside economizers

Current through Register Vol. 24-14, July 15, 2024
C403.5.4
Waterside economizers.
Waterside economizers shall comply with Sections C403.5.4.1 and C403.5.4.2.
C403.5.4.1
Design capacity.
Water economizer systems shall be configured to cool supply air by indirect
			 evaporation and providing up to 100 percent of the expected system cooling load
			 at
outdoor air
temperatures of 50°F dry-bulb (10°C
			 dry-bulb)/45°F wet-bulb (7.2°C wet-bulb) and below.
EXCEPTION
:
Systems where dehumidification requirements cannot be
						  met using outdoor air temperatures of 50°F dry-bulb (10°C
						  dry-bulb)/45°F wet-bulb (7. 2°C wet-bulb) and where 100 percent of the
						  expected system cooling load at 45°F dry-bulb (7. 2°C
						  dry-bulb)/40°F wet-bulb (4. 5°C wet-bulb) is met with evaporative water
						  economizers.
C403.5.4.2
Maximum pressure
			 drop.
Precooling coils and water-to-water heat exchangers used as part
			 of a water economizer system shall either have a waterside pressure drop of
			 less than 15 feet (4572 mm) of water or a secondary loop shall be created so
			 that the coil or heat exchanger pressure drop is not seen by the circulating
			 pumps when the system is in the normal cooling (noneconomizer) mode.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40355 - Section C403.5.5-Economizer fault detection and diagnostics

Current through Register Vol. 24-14, July 15, 2024
C403.5.5
Economizer fault detection and diagnostics (FDD).
Air-cooled
			 unitary direct-expansion units with a cooling capacity of 54,000 Btu/h or
			 greater listed in the tables in Section C403.3.2 that are equipped with an
			 economizer in accordance with Section C403.5 shall include a fault detection
			 and diagnostics (FDD) system complying with the following:
1. The following temperature sensors shall be
			 permanently installed to monitor system operation:
1.1. Outside air.
1.2. Supply air.
1.3. Return air.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40360 - Section C403.6-Requirements for mechanical systems serving multiple zones

Current through Register Vol. 24-14, July 15, 2024
C403.6
Requirements for mechanical systems serving multiple zones.
Sections C403.6.1 through C403.6.10 shall apply to mechanical systems serving
			 multiple zones.
C403.6.1
Variable air
			 volume (VAV) and multiple zone systems.
Supply air systems serving
			 multiple zones shall be VAV systems that have zone controls configured to
			 reduce the volume of air that is reheated, re-cooled or mixed in each
zone
to one of the following:
1. Twenty percent of the zone design peak
			 supply for systems with
direct digital control
(DDC) and 30
			 percent of the maximum supply air for other systems.
2. Systems with DDC where items 2.1 through
			 2.3 apply.
2.1. The airflow rate in the
			 deadband between heating and cooling does not exceed 20 percent of the zone
			 design peak supply rate or higher allowed rates under Items 3, 4, or 5 of this
			 section.
2.2. The first stage of
			 heating modulates the zone supply air temperature setpoint up to a maximum
			 setpoint while the airflow is maintained at the deadband flow rate.
2.3. The second stage of heating modulates
			 the airflow rate from the deadband flow rate up to the heating maximum flow
			 rate that is less than 50 percent of the zone design peak supply
			 rate.
3. The outdoor
			 airflow rate required to meet the minimum ventilation requirements of Chapter 4
			 of the
International Mechanical Code
.
4. Any higher rate that can be demonstrated
			 to reduce overall system annual energy use by offsetting reheat/recool energy
			 losses through a reduction in outdoor air intake for the system, as
approved
by the code official.
5. The airflow rates to comply with
			 applicable codes or accreditation standards such as pressure relationships or
			 minimum air change rates.
EXCEPTION:
The following individual
zones
or
						  entire air distribution systems are exempted from the requirement for VAV
						  control:
1.
Zones
or supply air systems where
						  not less than 75 percent of the energy for reheating or for providing warm air
						  in mixing systems is provided from a site-recovered source, including condenser
						  heat.
2. Systems that prevent reheating, recooling, mixing or
						  simultaneous supply of air that has been previously cooled, either mechanically
						  or through the use of economizer systems, and air that has been previously
						  mechanically heated.
3. Ventilation systems complying with Section C403.3.5,
						  DOAS, with ventilation rates comply with Section C403.2.2.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-4037 - Section C403.7-Ventilation and exhaust systems

Current through Register Vol. 24-14, July 15, 2024
C403.7 Ventilation and exhaust systems.
In
				addition to other requirements of Section C403 applicable to the provisions of
				ventilation air or the exhaust of air, ventilation and exhaust systems shall be
				in accordance with Sections C403.7.1 through C403.7.8.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40371 - Section C403.7.1-Demand control ventilation

Current through Register Vol. 24-14, July 15, 2024
C403.7.1
Demand
			 control ventilation.
C403.7.1.1
Spaces requiring demand control ventilation.
Demand control
			 ventilation (DCV) shall be provided for the following:
1. Spaces with ventilby single-zone systems
			 where an air economizer is provided to comply with Section C403.5.
2. Spaces with an occupant load greater than
			 or equal to 15 people per 1000 square feet (93 m2)
			 of floor area (as established in Table 403.3.1.1 of the
International
			 Mechanical Code
or with an occupant outdoor airflow rate greater than
			 or equal to 15 cfm/person, as established in Table 403.3.1.1 of the
International Mechanical Code
.
EXCEPTIONS:
1. Spaces including, but not limited to, dining areas,
						  where more than 75 percent of the space design outdoor airflow is transfer air
						  required for makeup air supplying an adjacent commercial kitchen.
2. Spaces with one of the following occupancy
						  classifications as defined in Table 403.3.1.1 of the International Mechanical
						  Code : Correctional cells, educational laboratories, barbers, beauty and nail
						  salons, and bowling alley seating.
3. Dormitory sleeping areas with fewer than five
						  occupants per space.
4. Spaces with ventilation not provided by a
						  single-zone system where the design occupant component outdoor airflow is less
						  than 100 cfm (23.6 L/s), or 200 cfm (47.2 L/s) with system having energy
						  recovery with minimum 60 percent sensible effectiveness. Design occupant
						  component outdoor airflow shall be calculated as the product of the design
						  number of occupants in the space and the people outdoor airflow rate per
						  occupant ( Rp) as established in Table 403.3.1.1 of the International
						  Mechanical Code.
5. Spaces with ventilation not provided by a
						  single-zone system where the total system design outdoor airflow is less than
						  750 cfm (354 L/s), or 1500 cfm (708 L/s) with system having energy recovery
						  with minimum 60 percent sensible effectiveness.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40372 - Section C403.7.2-Occupancy sensors

Current through Register Vol. 24-14, July 15, 2024
C403.7.2 Occupancy sensors.
Classrooms, gyms,
				auditoriums, conference rooms, and other spaces with an occupant load greater
				than or equal to 25 people per 1000 square feet (93
				m2) of floor area (as established in Table 403.3.1.1
				of the
International Mechanical Code
) that are larger than 500
				square feet of floor area shall have occupancy sensor control that will either
				close outside air dampers, close ventilation supply dampers or turn off
				ventilation equipment when the space is unoccupied except where equipped with
				another means to automatically reduce outside air intake below design rates
				when spaces are partially occupied.
EXCEPTIONS:
1. Spaces with one of the following occupancy
						  categories (as defined by the
International Mechanical Code
):
						  1.1.Correctional cells. 1.2.Daycare sickrooms. 1.3.Science labs. 1.4.Barbers.
						  1.5.Beauty and nail salons. 1.6.Bowling alley seating
2. When the space is unoccupied during occupied
						  building hours, a ventilation rate equal to or less than the zone outdoor
						  airflow as defined in Section 403.3.1.1.1 of the
International
						  Mechanical Code
with a zone population of zero
.
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40373 - Section C403.7.3-Ventilation air heating control

Current through Register Vol. 24-14, July 15, 2024
C403.7.3
Ventilation air heating control.
For ventilation air units with
			 supplemental heating capacity that operate in conjunction with zone heating and
			 cooling systems, supplemental heating shall not warm ventilation supply air to
			 a temperature greater than 55°F (13°C).
Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-40374 - Section C403.7.4-HVAC serving guestrooms

Current through Register Vol. 24-14, July 15, 2024
C403.7.4
Automatic control of HVAC systems serving guestrooms.
In Group R-1
			 buildings containing more than 50 guestrooms, each guestroom shall be provided
			 with controls complying with the provisions of Sections C403.7.4.1 and
			 C403.7.4.2. Card key controls comply with these requirements.
C403.7.4.1
Temperature setpoint
			 controls.
Controls shall be provided on each HVAC system that are
			 capable of and configured with three modes of temperature control.
1. When the guestroom is rented but
			 unoccupied, the controls shall automatically raise the cooling setpoint and
			 lower the heating setpoint by not less than 4°F (2°C) from the occupant
			 setpoint within 30 minutes after the occupants have left the
			 guestroom.
2. When the guestroom is
			 unrented and unoccupied, the controls shall automatically raise the cooling
			 setpoint to not lower than 80°F (27°C) and lower the heating setpoint
			 to not higher than 60°F (16°C). Unrented and unoccupied guestroom mode
			 shall be initiated within 16 hours of the guestroom being continuously occupied
			 or where a
networked guestroom control system
indicates that
			 the guestroom is unrented and the guestroom is unoccupied for more than 20
			 minutes. A
networked guestroom control system
that is capable
			 of returning the thermostat setpoints to default occupied setpoints 60 minutes
			 prior to the time a guestroom is scheduled to be occupied is not precluded by
			 this section. Cooling that is capable of limiting relative humidity with a
			 setpoint not lower than 65 percent relative humidity during unoccupied periods
			 is not precluded by this section.
3. When the guestroom is occupied, HVAC set
			 points shall return to their occupied set point once occupancy is
			 sensed.