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3 Cards in this Set
- Front
- Back
Automatic snow melting systems can use: 1) Hot water and ethylene glycol mixed 2) All of the above 3) Hot water and antifreeze mixed 4) Infrared lamps mounted above sidewalks and ramps 5) Electric resistance heating |
All of the above
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The maximum temperature of water in a gravity hot water system is: 1) 65°C 2) 67°C 3) 70°C 4) 87°C 5) 77°C |
77°C |
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In many buildings, the hot water heating system is divided into several circuits and the flow of water is controlled by: 1) An expansion tank in each heating zone 2) A circulating pump in each heating zone 3) A thermometer 4) A thermostat 5) A thermocouple |
A circulating pump in each heating zone |