Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
Circulating pumps used in hot water heating systems are usually: 1) Reciprocating pumps 2) Gear type pumps 3) Rotary pumps 4) Regenerative pumps 5) Centrifugal pumps |
Centrifugal pumps |
|
|
The expansion tank is normally attached to the: 1) Highest point in the system 2) Supply line after the circulating pump 3) Supply line above the lowest convector 4) Return line directly before the boiler 5) Boiler or the hot water supply line near the boiler |
Boiler or the hot water supply line near the boiler |
|
|
A device used on smaller heating boilers to measure water "head" or height is the: 1) Gauge glass 2) Syphon 3) Altitude gauge 4) Pressure gauge 5) Header |
Altitude gauge |
|
|
The temperature control on a steam to hot water converter, controls the: 1) Water flow 2) Steam control valve 3) Steam temperature 4) Firing rate 5) Pump speed |
Steam control valve |
|
|
Diverter fittings are used in the supply lines to heating units when: 1) There are no balancing valves installed in the supply line 2) Compensating for a low heating load 3) A hydraulic balance must be corrected 4) The distance from boiler to heating unit is short 5) A higher heating output is required from the heating unit |
A higher heating output is required from the heating unit |
|
|
The purpose of a pressure reducing valve is to: 1) Reduce water hammer in a heating system 2) Maintain hot water at a required pressure 3) To reduce the feedwater pressure to the boiler 4) Level out the flow of steam or hot water 5) Automatically reduce pressure and maintain it |
Automatically reduce pressure and maintain it |
