Shevet HaLevi 9:51
שבט הלוי, ח״ט סי׳ נ״א
Shevet HaLevi 9:51
The author discusses whether a contemporary private gas heating system for individual apartments—with each unit having its own water heater heated by gas—may be left running on a low setting before Shabbat, and considers the concern that one might be tempted to adjust the heat (shema yachateh), leaning toward a stringent ruling; he also analyzes the permissibility of placing a food-filled pot on a covered electric stove that will be activated by a timer during Shabbat, examining whether such a stove satisfies the conditions of kureh u-ketumah and whether the timer setup avoids the prohibitions of shehiyah and shema yachateh.
יקרתכם קבלתי לנכון, ואשר קבעתם לי שני ענינים שנתחדש בזמננו לחימום הבית אשר ההסקה פרטית לכל דירה ודירה, ויש דוד מים בכל דירה ששם המים מתחממים על ידי גז
On this pageThe author addresses a contemporary apartment heating system that utilizes individual gas boilers connected to radiators. He discusses whether it is permissible to leave the system running on a low setting from before Shabbat, considering the rabbinic restriction against leaving items that might tempt one to adjust (stoke) the heat on Shabbat (שמא יחתה), and expresses a tendency to rule stringently. The author discusses the halachic permissibility of placing a food-filled pot before Shabbat onto a covered electric stove that will be turned on during Shabbat by a timer. He analyzes whether a covered electric stove is halachically considered swept or covered (kureh u-ketumah) and if using a timer avoids the prohibitions of shehiyah and shema yachateh.
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