If your salary increases, the maximum contributions can increase. You have to submit proof to Revenue through payslips or P60.
The €14,049 is what is called an ordinary contribution, which can be paid each year.
The €17,352 is what is called a special contribution and is in relation to past service. In order to claim tax relief in the year it is paid, it must be matched by a ordinary contribution. In the situation you gave, you can claim tax relief €13,917 as an ordinary contribution and €13,917 as a special contribution. The €3,435 will have to be carried forward to next year.
But what you will do in reality is claim €13,917 as an ordinary contribution and €3,435 as a special contribution and claim the lot in the year it is paid.
I've gone the long, technical route to say, yes, you can pay €17,352 this year.
Steven
http://www.bluewaterfp.ie (www.bluewaterfp.ie)