Section 110.12 — California Energy Code (Title 24, Part 6)

MANDATORY REQUIREMENTS

FOR DEMAND MANAGEMENT Buildings, other than healthcare facilities, that install or are required to install demand responsive controls shall comply with the applicable demand responsive control requirements of Sections 110.12(a) through 110.12(e).

(a) Demand responsive controls.

All demand responsive controls shall be either:

A. A certified OpenADR 2.0a or OpenADR 2.0b

Virtual End Node (VEN), as specified under Clause 11, Conformance, in the applicable OpenADR 2.0 Specification; or

B. Certified by the manufacturer as being capable

of responding to a demand response signal from a certified OpenADR 2.0b Virtual End Node by automatically implementing the control functions requested by the Virtual End Node for the equipment it controls. 2. All demand responsive controls shall be capable of communicating with the VEN using a wired or wireless bidirectional communication pathway.

When communications are disabled or unavailable, all demand responsive controls shall continue to perform all other control functions provided by the control.
Demand responsive control thermostats shall comply with Reference Joint Appendix 5 (JA5), Technical Specifications for Occupant Controlled Smart Thermostats.

(b) Demand Responsive Zonal HVAC Controls. Non residential HVAC systems with DDC to the Zone level shall be programmed to allow centralized demand shed for noncritical zones as follows:

The controls shall have a capability to remotely increase the operating cooling temperature set points by 4 degrees or more in all noncritical zones on signal from a centralized contact or software point within an Energy Management Control System (EMCS).
The controls shall have a capability to remotely decrease the operating heating temperature set points by 4 degrees or more in all noncritical zones on signal from a centralized contact or software point within an EMCS.
The controls shall have capabilities to remotely reset the temperatures in all noncritical zones to original operating levels on signal from a centralized contact or software point within an EMCS.
The controls shall be programmed to provide an adjustable rate of change for the temperature increase, decrease, and reset.
The controls shall have the following features:

A. Disabled. Disabled by authorized facility

operators; and

B. Manual control. Manual control by authorized

facility operators to allow adjustment of heating and cooling set points globally from a single point in the EMCS; and

C. Automatic Demand Shed Control. Upon

receipt of a demand response signal, the space-conditioning systems shall conduct a centralized demand shed, as specified in Sections 110.12(b)1 and 110.12(b)2, for noncritical zones during the demand response period.

with nonresidential lighting systems having a total installed lighting power of 4,000 watts or greater that are subject to the requirements of Section 130.1(b)

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ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

shall install controls that are capable of automatically reducing lighting power in response to a Demand Response Signal.

For compliance testing, the lighting controls shall demonstrate a 15-percent or greater reduction in lighting power as described in NA7.6.3. The controls may provide additional demand responsive functions or abilities.
For buildings where demand response controls are required, demand responsive controls shall control the general lighting that is subject to the requirements of Section 130.1(b) and may control additional lighting.
General lighting shall be reduced in a manner consistent with the uniform level of illumination requirements in Table 130.1-A.

Exception to Section 110.12(c): Spaces where a health or life safety statute, ordinance, or regulation does not permit the general lighting to be reduced are not required to install demand responsive controls and do not count toward the 4,000-watt threshold.

(d) Demand Responsive Electronic Message Center

Control. Controls for electronic message centers greater than 15 kW shall be capable of reducing the lighting power by a minimum of 30 percent when receiving a demand response signal.

Exception to Section 110.12(d): Electronic message centers that are not permitted by a health or life safety statute, ordinance, or regulation to be reduced.

(e) Demand Responsive Controlled Receptacles. Con trolled receptacles in buildings shall be capable of automatically turning off all loads connected to the receptacle in response to a demand response signal.

Exception 1 to Section 110.12(e): Buildings not required to have demand responsive lighting controls.

Exception 2 to Section 110.12(e): Spaces where a health or life safety statute, ordinance or regulation does not permit the receptacles to be automatically controlled. Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5, 25402.8, and 25943, Public Resources Code.

66 2022 CALIFORNIA ENERGY CODE

SUBCHAPTER 3

NONRESIDENTIAL, HOTEL/MOTEL OCCUPANCIES, AND COVERED PROCESSES—MANDATORY REQUIREMENTS

iii.The supply side of mechanical balanced

ventilation systems, including heat recovery ventilation systems and energy recovery ventilation systems that provide outside air to an occupiable space.

Exception to Section 120.1(c)1A: For heat recovery ventilators and energy recovery ventilators, the location of the filters required by Section 120.1(c)1A may be downstream of a system thermal conditioning component, provided the system is equipped with ancillary filtration upstream of the system’s thermal conditioning component.

B. Air filter efficiency. The filters shall have a des ignated efficiency equal to or greater than MERV 13 when tested in accordance with ASHRAE Standard 52.2, or a particle size efficiency rating equal to or greater than 50 percent in the 0.30–1.0 μm range, and equal to or greater than 85 percent in the 1.0–3.0 μm range when tested in accordance with AHRI Standard 680; and

C. Systems shall be equipped with air filters that

meet either Subsection i or ii below.

i. Nominal 2-inch minimum depth filter(s); or

ii. Nominal 1-inch minimum depth filter(s) shall

be allowed if the filter(s) are sized according to Equation 120.1-A, based on a maximum face velocity of 150 feet per minute.

Aface = Qfilter /Vface (Equation 120.1-A)

Where: Aface = air filter face area, the product of

air filter nominal length × nominal width, ft ²

Qfilter = design airflow rate for the air filter,

ft ³ /min

Vface = air filter face velocity ≤ 150, ft/min

D. Filter racks or grilles shall use gaskets, sealing or

other means to close gaps around inserted filters and prevent air from bypassing the filter. 2. Natural ventilation. Naturally ventilated spaces shall be designed in accordance with 120.1(c)2A through 120.1(c)2C and include a mechanical ventilation system designed in accordance with 120.1(c)3:

A. Floor area to be ventilated. Spaces or portions of

spaces to be naturally ventilated shall be located within a distance based on the ceiling height, as specified in i, ii and iii. The ceiling height ( H ) to be used in i, ii or iii shall be the minimum ceiling height in the space, or for ceilings that are increasing in height as distance from the operable openings