Ideal icos boiler pump overrun? I'm installing a new interior heating system but can't give the impression...

I'm installing a new interior heating system but can't give the impression of being to find any info in the boiler instruction manual about pump overrun.
Can i therefor assume that this type of boiler doesn't requirement one.

Also if it did need it do i requirement to change the wring for the controls or is this built into the boiler and therefor it will automaticly hold on to the pump running for a few minutes.

I'm using a Honeywell Y-plan system.
Can I retrofit regular toilet to be a...
Answers:    It doesn't need one, you are fine.