6035CHPPT7Q2

What is another name for a two port motorised valve?

• Mid-position valve

• Three port diverter valve

• Boiler interlock

• Zone valve

What activates a two port motorised valve?

• Hot tap

• Room thermostat

• Cylinder coil

• Plate heat exchanger

What happens when both the room thermostat and the cylinder thermostat are satisfied in a two port motorised valve system?

• The boiler switches off

• The valve opens

• The valve closes

• The circulator switches off

What powers the paddle in a two port motorised valve?

• Boiler interlock

• Room thermostat

• Cylinder thermostat

• Synchronmotor

What is the purpose of a three port mid-position valve?

• To completely stop the flow of water

• To control flow to both heating and hot water circuits

• To control central heating flow only

• To control hot water flow only

Which port of a three port mid-position valve allows flow for the boiler?

• A

• B

• AB

• C

What happens when there is a call for heat from the cylinder thermostat in a three port mid-position valve system?

• The paddle moves to the mid-position

• The valve activates

• The system water can flow to the cylinder coil

• The valve closes

What is the characteristic of a three port diverter valve?

• It allows flow of water to both heating and hot water circuits

• It is known as a W plan - water priority

• It can only divert water flow to one circuit

• It can remain in the mid-position

What happens when there is a call for heat from the room thermostat in a three port diverter valve system?

• The valve activates

• The paddle moves to the mid-position

• The system water can flow to the cylinder coil

• The valve closes

What does the three port diverter valve do if there is a demand for hot water at any point?

• It remains in the mid-position

• It allows the flow to be directed to the hot water heat exchanger.

• It closes the valve

• It allows flow of water to both heating and hot water circuits