GMJ 6035 central heating 4
Authored by Glen Johnson
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Professional Development
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Delta T
Weight of the cistern
The pump speed
Room temperature divided by boiler temperature
The difference between the temperature of the radiator and the room
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Why is the position of the circulator pump important to produce positive pressure? (Choose 2)
To avoid air entering
To prevent positive pressure
To prevent a negative pressure
To prevent corrosion
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which of the following can be used to activate a two-port zone valve allowing circuits on either hot water or central heating? (Choose 2)
Expansion vessel
Circulator pump
Room thermostat
Cylinder thermostat
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
To correctly balance the system, what should be worked out? (Choose 2)
How long the system takes to heat up
How many full turns it takes to heat up
How many radiators are in the system (plus 1)
What type of property the customer has
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What kind of boiler can you see here?
system boiler
conventional boiler
combination boiler
thermal store
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What component is pictured?
pump valve
gate valve
service valve
none of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name the component
expansion vessel
pump valve
bypass valve
circulating pump
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