JPS5254253A - Freezing-preventive device for warm water-circulating room-heating sys tem - Google Patents

Freezing-preventive device for warm water-circulating room-heating sys tem

Info

Publication number
JPS5254253A
JPS5254253A JP12991375A JP12991375A JPS5254253A JP S5254253 A JPS5254253 A JP S5254253A JP 12991375 A JP12991375 A JP 12991375A JP 12991375 A JP12991375 A JP 12991375A JP S5254253 A JPS5254253 A JP S5254253A
Authority
JP
Japan
Prior art keywords
warm water
freezing
preventive device
sys tem
circulating room
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12991375A
Other languages
Japanese (ja)
Inventor
Kazuichi Ikegami
Juichi Honda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12991375A priority Critical patent/JPS5254253A/en
Publication of JPS5254253A publication Critical patent/JPS5254253A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: A warm water-circulating room-heating system which is stationary at an abovefreezing-point basic (or standard) temperature to be determined by various factors, is automatically operated to circulate warm water through a piping so that occurrence of inability of operation or other troubles can be prevented.
COPYRIGHT: (C)1977,JPO&Japio
JP12991375A 1975-10-30 1975-10-30 Freezing-preventive device for warm water-circulating room-heating sys tem Pending JPS5254253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12991375A JPS5254253A (en) 1975-10-30 1975-10-30 Freezing-preventive device for warm water-circulating room-heating sys tem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12991375A JPS5254253A (en) 1975-10-30 1975-10-30 Freezing-preventive device for warm water-circulating room-heating sys tem

Publications (1)

Publication Number Publication Date
JPS5254253A true JPS5254253A (en) 1977-05-02

Family

ID=15021481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12991375A Pending JPS5254253A (en) 1975-10-30 1975-10-30 Freezing-preventive device for warm water-circulating room-heating sys tem

Country Status (1)

Country Link
JP (1) JPS5254253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586119U (en) * 1981-07-06 1983-01-14 大阪瓦斯株式会社 Antifreeze device for heating equipment
US4459815A (en) * 1981-04-07 1984-07-17 Mitsubishi Denki Kabushiki Kaisha Air conditioner
JPH037817A (en) * 1989-06-02 1991-01-16 Shimizu Corp Anti-freezing system for warm water coil in air conditioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459815A (en) * 1981-04-07 1984-07-17 Mitsubishi Denki Kabushiki Kaisha Air conditioner
JPS586119U (en) * 1981-07-06 1983-01-14 大阪瓦斯株式会社 Antifreeze device for heating equipment
JPH037817A (en) * 1989-06-02 1991-01-16 Shimizu Corp Anti-freezing system for warm water coil in air conditioner

Similar Documents

Publication Publication Date Title
JPS52129051A (en) Control device for automatic ice maker
JPS5254253A (en) Freezing-preventive device for warm water-circulating room-heating sys tem
JPS5439549A (en) Multiple processor
JPS5289238A (en) Pipe for preventing fracture due to freezing
JPS5286610A (en) Apparatus for preventing dripping of drain
JPS51150136A (en) Piping for water heater
JPS53133966A (en) Waste-water treating system
JPS53124347A (en) Water quality controller
JPS5224354A (en) A feed water unit
JPS521538A (en) Automatic extinguish device for combustion
JPS5436494A (en) Water feeding device of reactor
JPS5241593A (en) Dissolved oxygen system
JPS5337341A (en) Information processor
JPS5416022A (en) Fuel percolation preventive device for engine
JPS5257550A (en) Saturation drain system cooling device of steam air preheater
JPS5263505A (en) Turbine controller
JPS51126553A (en) Ice saving detecting device for an automatic ice machine
JPS5439704A (en) Drain system for water heater
JPS5263504A (en) Turbine controller
JPS5259237A (en) Reserve tank limited water volume detective system of engine cooler
JPS5412086A (en) Control system for velocity violation
JPS5243187A (en) Automatic shearing machine
JPS51132395A (en) Cooling system control device at time of stop for reactor operation
JPS5351305A (en) Self evaporating preventive process of drain in branch pipe
JPS51137942A (en) Hot water supplying device