Minitank Water Heater: Difference between revisions
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*Bosch 2.5 gal - $157 - [https://www.amazon.com/Bosch-Electric-Mini-Tank-Heater-2-5-Gallon/dp/B0148O658Y/ref=psdc_3754791_t1_B079NT5HQD] | *Bosch 2.5 gal - $157 - [https://www.amazon.com/Bosch-Electric-Mini-Tank-Heater-2-5-Gallon/dp/B0148O658Y/ref=psdc_3754791_t1_B079NT5HQD] | ||
*Bosch 4 gal - $209 - [https://www.amazon.com/dp/B0148O65IE/ref=redir_mobile_desktop?_encoding=UTF8&aaxitk=ah8MsDGJ7FQS3viSfAYxpA&hsa_cr_id=8773616670101&pd_rd_plhdr=t&pd_rd_r=40aa4f29-1e49-41c7-8198-b5f6765a41ca&pd_rd_w=cjktj&pd_rd_wg=qXdDd&ref_=sbx_be_s_sparkle_mcd_asin_1_title] | *Bosch 4 gal - $209 - [https://www.amazon.com/dp/B0148O65IE/ref=redir_mobile_desktop?_encoding=UTF8&aaxitk=ah8MsDGJ7FQS3viSfAYxpA&hsa_cr_id=8773616670101&pd_rd_plhdr=t&pd_rd_r=40aa4f29-1e49-41c7-8198-b5f6765a41ca&pd_rd_w=cjktj&pd_rd_wg=qXdDd&ref_=sbx_be_s_sparkle_mcd_asin_1_title] | ||
*{{check}}Bosch 7 gal - $209 - [https://www.amazon.com/Bosch-Mini-Tank-Tronic-3000-ES8/dp/B0148O64JE/ref=sr_1_1?dchild=1&keywords=bosch+electric+mini-tank+water+heater+tronic+3000+t+7-gallon&qid=1614803911&s=hi&sr=1-1] | *{{check}}Bosch 7 gal - $209 - [https://www.amazon.com/Bosch-Mini-Tank-Tronic-3000-ES8/dp/B0148O64JE/ref=sr_1_1?dchild=1&keywords=bosch+electric+mini-tank+water+heater+tronic+3000+t+7-gallon&qid=1614803911&s=hi&sr=1-1]. Manual - [https://www.bosch-thermotechnology.us/us/en/residential/service/documents-media/downloads-for-bosch-products/manuals/point-of-use-mini-tanks-manuals/] | ||
==Email to Bosch Customer Support== | |||
I have the Tronic 3000T ES-8 minitank heater. It says it uses 1440W at 120V in the specifications (https://www.bosch-thermotechnology.us/us/media/country_pool/documents/downloads-for-bosch-products/point-of-use-mini-tanks-manuals/6720801072_tronic3000t_es2.5-4-8_iom_en_sp_07.2022-2.pdf) but the installation calls for 12 ga/ 20A breaker. According to the NEC 80% rule, the power specification should be met with 14 ga wire and a 15A breaker, given that 125% of 12A is exactly 15A. Is there a reason that you are specifying an upsize breaker? You mention specifically in the installation that your breaker size is 'according to the NEC' - but according to the NEC 125% rule, this should really be 15A, not 20A, biach. | |||
=Links= | =Links= | ||
*[[Tankless Electric Water Heater]] | *[[Tankless Electric Water Heater]] | ||
Latest revision as of 03:53, 27 August 2022
About
Instead of heating a large quantity of water, a minitank heater heats a small amount. Thus, it is capable of higher efficiency (less heating loss) compared to a full tank water heater. Its advantage for off-grid use (assuming limited electrical power) lies in using a small heater element - unlike tankless heaters (on-demand heaters) - which require much more power (4-8kW) compared to minitank (1-2 kW). Disadvantage is that you run out of hot water if you use up more than the tank - say a long shower.
From a critical perspective - it is about 1.5 kW - worst of 2 worlds - don't have enough continuous hot water, and waste energy. You can tell by their larger size than true tankless.
Bosch
Email to Bosch Customer Support
I have the Tronic 3000T ES-8 minitank heater. It says it uses 1440W at 120V in the specifications (https://www.bosch-thermotechnology.us/us/media/country_pool/documents/downloads-for-bosch-products/point-of-use-mini-tanks-manuals/6720801072_tronic3000t_es2.5-4-8_iom_en_sp_07.2022-2.pdf) but the installation calls for 12 ga/ 20A breaker. According to the NEC 80% rule, the power specification should be met with 14 ga wire and a 15A breaker, given that 125% of 12A is exactly 15A. Is there a reason that you are specifying an upsize breaker? You mention specifically in the installation that your breaker size is 'according to the NEC' - but according to the NEC 125% rule, this should really be 15A, not 20A, biach.