Central Heating L2

What is the Image shown

• Still

• Air Separator

• Bypass valve

• Slimline Boiler

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

What is this

• Radiator spanner

• Sonic screwdriver

• Tap wrench

• Pump adjustment key

Which radiator is a double panel double convector

• 
• 
• 
• 

Balancing a heating system requires you to adjust what

• The thermostat

• The TRV

• The lock shield

• The thermometer

Where is the neutral point

• At the edge of the Klingon empire

• Where the open vent connects to the circuit

• Where the primary flow becomes the return

• Where the cold feed connects to the circuit

The main problem with the one pipe system is that

• They are prone to blockages

• They can't be used in a bungalow

• They are expensive to run

• The earlier radiators pass cooler water back into the circuit

Wiring diagrams for the heating controls on a fully pumped system can be found in the

• Manufacturer’s Instructions

• British Standards

• NICEIC standards

• Wiring Regulations.

The cold water supply to a fully pumped open vented central heating system should be

isolated at the

• stop valve to the incoming cold water supply pipework

• Gate valve on the cold feed pipework from the F & E cistern

• service valve to the float operated valve to the CWS cistern

• service valve to the float operated valve to the F & E cistern.

Which one of the following gas boilers overcomes the need for a cold water storage cistern,

feed and expansion cistern and hot water storage vessel?

• Back-boiler.

• Condensing.

• Combination.

• Room-heater.