how to bridge McInto MC7106 and connect to MX-134


Hello,
Upgrade my McIntosh system to MC7106 and would like to bridge into 3 x 300watts through my MX-134 preamp. I have followed the manual guide but I am unable to make it works. Do I have to connect to zone A fixed line output from the MX-134?
Thanks,
Olivier
kitsilano