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Worksheetscentral heating #001
Total questions: 20
Worksheet time: 10mins
The grade of copper used in microbore central heating systems is:
R250
R290
R220
R230
A half hard straight length of copper is:
R290
R250
R220
R200
The diameters of small bore pipework are:
8 and 10mm
15 and 22mm
28 and 35mm
below 42mm
What type of valve can you see here?
2 port zone valve
mid position valve
by pass valve
pump
Which valve can you see here?
mid position
by pass
wiring centre
2 port zone valve
What does this component do?
controls the hot water temperature
controls the room temperature
controls the boiler
none of the above
What type of system is this?
C plan
Y plan
S plan plus
S plan
What does this component do?
Joins all the CH components together
Stores the mcb's
Connects the boiler to the timeclock
None of the above
Name the component
pump valve
bypass valve
automatic air vent
expansion vessel
Name the component
expansion vessel
pump valve
bypass valve
circulating pump
What type of expansion vessel can you see?
diaphragm
balloon
pressure operated
bubble
Name the component
programmer
cylinder thermostat
boiler thermostat
room thermostat
name the component
pressure relief valve
manual air vent
automatic air vent
by pass valve
What type if radiator can you see?
single panel
double panel
double panel single convector
column radiator
name the component
wheel head radiator valve
thermostatic radiator valve
lock shield radiator valve
gate valve
Which document should be used for new domestic dwellings?
part L 1A
part L 1B
part L 2A
part L2B
What is this component used for?
connecting to taps
connecting cold water to a central heating system to fill
connecting to an expansion vessel
back flow prevention device
What kind of boiler can you see here?
system boiler
conventional boiler
combination boiler
thermal store
What component is pictured?
pump valve
gate valve
service valve
none of the above
Name the valve
radiator valve
drain off valve
combined radiator and drain off valve
wheel head valve
