加州今年新的code规定新房已经不让装gas waterheater

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zmz123
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 zmz123 »

纽约州也有规定,只要 building 大过一定面积,取暖要换成电的。不然罚款罚死人。
主要影响 condo, coop building, 屋主要大出血了

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drifter
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 drifter »

这几天湾区停电 全电家庭被雷得外焦里嫩
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 kuku »

drifter 写了: 3月 15, 2023, 12:51 pm 这几天湾区停电 全电家庭被雷得外焦里嫩
用气的热风炉也要有电才能运行
至少要有一个大型备用电源
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 drifter »

kuku 写了: 3月 15, 2023, 3:20 pm 用气的热风炉也要有电才能运行
至少要有一个大型备用电源
用气的热水和炉头 没电 可以workaround运行起来
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 drifter »

有些房子还有给BBQ的用气接口 搞个portable heater效率还挺高
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 Nobody楼主 »

kuku 写了: 3月 15, 2023, 3:32 am 美国的法律浩如烟海,怎么可能看过整部规范。
但是2022年的新规范有什么改动,大致是知道的
你提供具体材料,我就顺便学习下。
结论是,你查错规范了,你给的是Section 150.1
而Section 150.0才是你应该看得
没兴趣看的人,我就科普一下,这段关于热水器的章节,概括起来就一句话,热水器安装要为将来的电气化预留空间。

Subchapter 7 Single-Family Residential Buildings—Mandatory Features and Devices
Section 150.0 Mandatory Features and Devices
Single-family residential buildings shall comply with the applicable requirements of Sections 150(a) through 150.0(v).
NOTE: The requirements of Sections 150.0(a) through 150.0(r) apply to newly constructed buildings. Sections 150.2(a) and 150.2(b) specify which requirements of Sections 150.0(a) through 150.0(r) also apply to additions or alterations.

(n) Water heating system.

1. Systems using gas or propane water heaters to serve individual dwelling units shall designate a space at least 2.5 feet by 2.5 feet wide and 7 feet tall suitable for the future installation of a heat pump water heater (HPWH) by meeting either A or B below. All electrical components shall be installed in accordance with the California Electrical Code:
A. If the designated space is within 3 feet from the water heater, then this space shall include the following:
i. A dedicated 125 volt, 20 amp electrical receptacle that is connected to the electric panel with a 120/240 volt 3 conductor, 10 AWG copper branch circuit, within 3 feet from the water heater and accessible to the water heater with no obstructions; and
ii. Both ends of the unused conductor shall be labeled with the word "spare" and be electrically isolated; and
iii. A reserved single pole circuit breaker space in the electrical panel adjacent to the circuit breaker for the branch circuit in A above and labeled with the words "Future 240V Use"; and
iv. A condensate drain that is no more than 2 inches higher than the base of the installed water heater, and allows natural draining without pump assistance.
B. If the designated space is more than 3 feet from the water heater, then this space shall include the following:
i. A dedicated 240 volt branch circuit shall be installed within 3 feet from the designated space. The branch circuit shall be rated at 30 amps minimum. The blank cover shall be identified as "240V ready"; and
ii. The main electrical service panel shall have a reserved space to allow for the installation of a double pole circuit breaker for a future HPWH installation. The reserved space shall be permanently marked as "For Future 240V use"; and
iii. Either a dedicated cold water supply, or the cold water supply shall pass through the designated HPWH location just before reaching the gas or propane water heater; and
iv. The hot water supply pipe coming out of the gas or propane water heater shall be routed first through the designated HPWH location before serving any fixtures; and
v. The hot and cold water piping at the designated HPWH location shall be exposed and readily accessible for future installation of an HPWH; and
vi. A condensate drain that is no more than 2 inches higher than the base of the installed water heater, and allows natural draining without pump assistance.
2. Water heating recirculation loops serving multiple dwelling units shall meet the requirements of Section 110.3(c)4.
3. Solar water-heating systems and collectors shall be certified and rated by the Solar Rating and Certification Corporation (SRCC), the International Association of Plumbing and Mechanical Officials, Research and Testing (IAPMO R&T), or by a listing agency that is approved by the executive director.
4. Instantaneous water heaters with an input rating greater than 6.8 kBTU/hr (2kW) shall meet the requirements of Section 110.3(c)6.
不用在这硬凹教我查哪部分规范,你贴的那玩意是怎么预留设计条件,关于系统要求,当然是我贴的那部分,你要真是业内人士,你应该知道加州现在为new detached construction做Title24的设计公司,一律采用Heat pump system才能通过building plan的审查。你要是有能按去年的设备的条件设计能通过Title24的设计公司,告诉我,我付双倍设计费请他们做。
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 kuku »

Nobody 写了: 3月 16, 2023, 1:55 am 不用在这硬凹教我查哪部分规范,你贴的那玩意是怎么预留设计条件,关于系统要求,当然是我贴的那部分,你要真是业内人士,你应该知道加州现在为new detached construction做Title24的设计公司,一律采用Heat pump system才能通过building plan的审查。你要是有能按去年的设备的条件设计能通过Title24的设计公司,告诉我,我付双倍设计费请他们做。
你就是好面子,不愿意承认自己错了
你再看看自己写的标题是不是不实陈述?
就算你那疙瘩有特别的要求,也不代表加州
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Re: 加州今年新的code规定新房已经不让装gas waterheater

帖子 Nobody楼主 »

kuku 写了: 3月 16, 2023, 2:35 am 你就是好面子,不愿意承认自己错了
你再看看自己写的标题是不是不实陈述?
就算你那疙瘩有特别的要求,也不代表加州
标题怎么是不实陈述,新房难道不是指new construction?内文又补充只有attached mainhouse的才可以沿用原来的设备,不是行业人士,别来这当搅屎棍,想学习,去找套今年的building plan报批图看看,加州的设计图用的就是加州规范,不论哪个city,所有图纸第一页都得把所有的California code全列一遍,跟在加州什么地方有毛关系。
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