I have had to use an extra work around on top of the one you have suggested. I can neutralize the units of a Piping & HVAC Temperature Difference parameter but not in the HVAC/Cooling Loads parameter that the formula is driving. So i have neutralized them individually in a Common/Number parameter first and used those parameters in the formula. I tried this with the Temperature type parameters initially before asking on the forum but it did not work.
For anyone else's info the problem parameters where not all Piping Temperature type parameters but had the same issue from the list in the previous post:
ROOM SETPOINT COOLING - HVAC/Temperature parameter
COOLING WATER FLOW TEMP - Piping/Temperature parameter
I already had NOMINAL FLOW ΔT COOLING as a Piping/Temperature Difference i probably missed neutralizing this initially