Cannot calibrate left side without sprayhead.
I do not know which Titan you have, as they make several. But you did say multiple heads, So here is a parts book for a dual. http://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/BU-TITANDUAL_pm.pdf
I think what you are looking for is on page 14.
This is the current version: http://www.partstown.com/bunn/bu40670%2e1021;sid=I5YtScgKNfIsSZMi188eR2DKIwVJXm7uTDU=#docs
Retrieving data ...