Tekmar Radiant Controls

SoCal_Hydronics

Greetings,

I have not stayed up to speed on Tekmar controls the last years and have a large job that needs to operate independently and also interface with a crestron system.

I find all their choices very confusing to navigate

This is a Radiant Heat only, 23 zones, 60 actuators.

Viessmann 280MBH boiler. Just need TT. No mixing, no 0-10V.

If it did not need to interface with Crestron, I'd simply use a series of Taco ZVC406EXP

Needs to interface with Crestron system

Can anyone point me to the components to make this happen in the world of Tekmar?

Thanks,

Jacob

Teemok

This was done wirelessly with apps at the thermostat level on a recent project. Savant system. ZV control is as normal. I don't know how Crestron is supposed to interface. Third party Tstats to Crestron and Crestron to ZV seems silly today. Crestron senors and their app to control the ZVC via a switch makes some sense.

hot_rod

60 actuators? What type?
somehow you will need enough transformer to power all those

if they are low current draw helmet heads, 7 on a 40 VA transformer 

You may  still need relay boxes daisy chained together to get your 24v
Then the Creston  interacts with the relay boxes

SoCal_Hydronics

These are Helmet Heads. I believe on the last job I used their RS232 gateway for the low voltage contractor to control the TN2 stats. That job was more complicated with Jaga fancoils doing heating + Cooling. This is simple Floor Heat only -- boiler has all the reset functions etc. I just want make sure I understand which product to start with, then which products to add to achieve 23 zones. Also whether I need Tn2 or Tn4. I used a RIB 100VA Power supply.

Teemok

Looks like a 482 with four 335's and 23- 532 t-stats. I Have not set this combo up so my experience is limited. You should be clear before ordering. DHW? I don't know if you want switch pumps with Tekmar so you may need a different zone manager. Careful with micro zoning, a buffer tank might be good to help with short cycles. Twin or big/small boiler pairs provides faster from cold warm ups, redundancy and a lower minimum firing rate.

SoCal_Hydronics

Thanks. I do have a 40 gl buffer tank on the primary.

Zman

Why not just use Crestron t stats? https://www.crestron.com/Products/Featured-Solutions/Horizon-Thermostat, As @hot_rod mentioned, you will still have power issues for the Zv's. You can always use a zone controller zone for each valve and jump the t-stats together on the controller.

Teemok

Stand alone requirement. There's no zv power issues.