
9189PH2CHPPT3
Quiz
•
Other
•
12th Grade
•
Hard

William Heron
FREE Resource
Enhance your content
41 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main difference between sealed systems and open vented systems in terms of water?
The color of the water
The temperature at which water boils
How the water is charged into the system and pressure maintenance
The amount of water used
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identify the component labeled in the diagram that helps maintain pressure in a sealed heating system.
Wiring centre
Expansion vessel
Programmer/stop
Temporary filling loop with double check valve arrangement
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are sealed heating systems filled with water?
Directly from the mains cold water supply via a permanent connection
Using a temporary filling loop from the mains cold water supply
Through an F&E cistern continuously
By manual filling with buckets or containers
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What replaces the open vent in a sealed heating system to manage the expansion of water?
A pressure relief valve
An expansion vessel and a pressure relief valve
A thermostat
A manual release valve
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the pressure relief valve in a sealed heating system?
To increase the pressure within the system
To regulate the temperature of the water
To relieve excess pressure and discharge safely to a drain point outside the dwelling
To indicate the water level in the system
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it vital to have a pressure relief valve in a sealed heating system?
Because the water may be in excess of 80°C
To prevent water from freezing in the system
To maintain a constant water supply
To control the pH level of the water
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a pressure gauge in a sealed heating system help to indicate?
The temperature of the water
The quality of the water
A potential component malfunction
The amount of water used
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