New 6105 on Apex Question

[GQuinn]

What is the minimum flow setting on the Apex for the new style Tunze 6105? The old style 6105 were 30%(min) or 0%(off). I thought I read somewhere the minimum % was different.

Thank you

 

[rvitko]

The pump can do 20% now, but keep in mind, to my knowledge Apex is still using the old control voltage range so the speeds are not correct. What you will usually find is 40% equals 20% and below that the pump will stop.

 

[GQuinn]

The pump can do 20% now, but keep in mind, to my knowledge Apex is still using the old control voltage range so the speeds are not correct. What you will usually find is 40% equals 20% and below that the pump will stop.

So if 40%(apex) equals 20% (6105). Is 100% the same on both?

Thanks again for your help.

 

[rvitko]

Roughly, the top end does not matter 6.5-10V is the same as 6.5V, the problem is the bottom range is all compressed so the voltages don't match up.

 

[GQuinn]

Thanks for your help. Just to verify, when using the Apex for control, the dials on the 6105 controller have no function.

 

[rvitko]

Yes, they should be set to external and main speed to 100%, after that it is ignored and the Apex will control it.