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34 Cards in this Set
- Front
- Back
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What best describes the amount of Heat energy required to raise the temperature of a pound of water 1•F? |
A BTU or British Thermal Unit |
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Which boiler is limited to a maximum working pressure of 30psig (water) or 15 psig ( steam) ? |
High Mass Cast Iron Boiler? |
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Within a cast iron boiler , which device indicated pressure and temperature? |
Combination Gauge |
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The devise used to shut down the fuel to the burner when the water level is the boiler drops below its operating level is called a______________________ |
Float operated low water cut off or Probe type |
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A globe Valve pattern device that is used to reduce incoming pressure to the minimum desired boiler system pressure and that also serves as an automatic water feeder is known as a __________________ or _____ |
Pressure Reducing Valve or PRV |
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What are the maximum operating temperature and pressure of a low temperature high mass cast iron boiler ? |
120C/ 250F, 207 kPa/30psig |
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Low temperature low pressure hot water boilers are usually rated in ____________ |
net BTU/hr or EDR |
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The amount of energy available at the heat transfer is defined as: |
The Net Rating |
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An EDR has a BTU value of _____________ |
Steam 240 BTU/hr Hot Water 150 BTU/hr |
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The amount of Heat Energy consumed by the Boiler is defined as : |
The input rating |
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The piping system in which the heat transfer units are a part of the piping system is the: |
Series Loop |
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The name of the piping system in which the heat transfer units use a specialty Tee is a ________ |
One pipe ( monoflow) |
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The name of the piping system in which the first heat transfer unit supplied is also the first returned is the: |
Two Pipe Direct return |
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The name of the piping system in which the water travels approximately the same distance to each of the heat transfer units is the : |
Two Pipe reverse return |
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The Major disadvantage of the series loop piping system is: |
Has limited heat capacity for each circuit ( 60-70MBH) |
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The Purpose if a Balancing Valve is to: |
Adjust flow rates to each transfer unit |
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The purpose of a wild loop is to: |
Prevent pump from deadheading |
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The type of radiator valve that should be installed to prevent unauthorized use is a : |
Lock shield radiator Valve |
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The Purpose of a zone valve is to : |
Provide control of heat emission |
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The part of a circulator that transfers energy to the water is : |
The impeller |
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What is the function of a circulator in a Hot Water Heating System? |
Moves the water within the system |
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The two variables you will find on a pump curve are: |
Head and Flow |
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The Best Location for the circulator in a Hot Water heating system is : |
Downstream of the compression Tank |
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Finned Tube Baseboard is rated by what method? |
BTU per foot per hour based upon supply water temperature, flow rate and entrance air temperature-of 65•C |
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How do you control the heat output of finned tube baseboard ? |
By adjusting the type of Damper |
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What is the heat loss limitation for a series loop? |
60-70 MBH per loop |
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What is the definition of zoning? |
Portion of a heating system individually controlled |
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What are two types of Hot Water unit heaters? |
Draw through Vertical Blow through Horizontal |
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What is the recommended maximum installation height for a horizontal Unit heater? |
12ft/3.66m |
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Where should heat transfer units be located ? |
Under windows , next to doors and in areas of high heat loss ( vestibule areas) |
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What is the definition of radiation? |
Transfer of Heat from one object to another from one object to another through intervening space |
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The two types of ceiling radiant panels are : |
Modular Linear |
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Which Radiant Panel can have supply and return piping at the same end? |
Any panel with even number of tube spacing. |
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How can linear panels be used to achieve a 90• corner? |
Square corner or mitred corner method.stud |
