Jacob Mulder and Chris Dougherty both scored half centuries in an opening stand off 85, before Mulder fell for exactly 50, hitting 9 fours and a six in his 28 ball stay.
Dougherty added a further 54 with the second wicket with Pienaar before he too went for 57, clearing the ropes 4 times and also 3 fours in his 44 deliveries.
South African professional Pienaar then launched a brutal assault on the beleaguered Carrick attack, smashing 8 sixes and 4 fours in an unbeaten 83 from only 34 balls.
He and skipper Nigel Jones (22*) putting on an unbroken 83 for the third wicket as the home side posted an imposing 222 for 2.
The Carrick reply never got going, as Allen Coulter (3-12) struck three early blows including overseas professional Jacques Snyman.
CJ van der Walt top scored with 20, while Ryan Eagleson struck a few lusty blows as they petered along to 99 for 8.
David Robinson claimed 2 for 16, while teenage debutant Ethan Biggerstaff also picked up a brace.
The CSNI v Muckamore clash was washed out, while there are two games down for decision on Friday, when Lisburn face Waringstown and North Down entertain Instonians.