types of heating plan

[jontheplum]

recently sat an exam towards my tech cert level 3 one question was what are the two main types of heating plan and what is the main difference between the two.anyones brains for the picking out there

 

[ChrisR]

See

http://content.honeywell.com/uk/homes/catalogu.htm

 

[lightning]

Y-plan uses a mid-position valve

s-plan uses 2x2 port valves idea over 150 cub space {then it has to be zoned}

 

[D_Hailsham]

recently sat an exam towards my tech cert level 3 one question was what are the two main types of heating plan and what is the main difference between the two.anyones brains for the picking out there

Does that mean you were absent*/asleep*/not paying attention* when the topic was discussed in the class

* Strike out those which do not apply