TM 5-642, TECHNICAL MANUAL, OPERATION AND MAINTENANCE, SMALL HEATING SYSTEMS (AUG 1990)

TM 5-642, TECHNICAL MANUAL, OPERATION AND MAINTENANCE, SMALL HEATING SYSTEMS (AUG 1990)., This technical manual provides basic information for facilities personnel regarding the operation and maintenance of small heating systems and related equipment. Generally, the manual covers low pressure steam boilers (less than 15 psig), low pressure hot water boilers (less than 30 psig), space heaters, unit heaters, and warm air furnaces. The term "small" is used in the context of this manual to differentiate from the high pressure systems and equipment that are covered in detail in TM 5-650, Central Boiler Plants.