reset control

Paul S_3

Hey everyone I'm looking for a setup for a customer of mine that specifically wants a NEST thermostat controlled via iPhone with a outdoor reset control from Tekmar or whatever manufacture thanks in advance Paul S

Zman

Nest

What type of boiler and controls are you working with?

Is the system radiant or base board? What type?

Carl

Paul S_3

2 pipe

2 pipe system with radiators....is a atmospheric 200,000 btuh hot water boiler...one zone...customer wants outdoor reset with NEST thermostat controlled via iPhone thanks Paul s

Zman

Reset

How low are you trying to go? You could put a simple reset controller on the boiler, but you cannot lower it to where it will condense. The lowest would be around 150. If you want to go lower you need a condensing boiler or a mixing loop.

Either way, the nest is controlling the room temp and a separate controller is doing the outdoor reset.

Carl

Eric_32

You can....

probably add something like a Taco SR501-OR to the boiler which will give the outdoor reset, and also just install the Nest tstat.



Your not going to be setting the OR parameters by a smart phone, just the Nest. The SR501-OR will be adjusting the boiler's temp by monitoring the outdoor temp.

nicholas bonham-carter

Internet enabled control

I wonder how difficult it is to prevent that Nest (of vipers) from constantly playing with the temperature settings. I don't believe outdoor reset and night setback play nicely together.

Have a look a Tekmar's website, and see if they don't have an internet enabled boiler control. At least you would only have to be talking to one tech help department when you are setting it up.--NBC

nicholas bonham-carter

Temperature warning

Maybe this would give him information remotely:



http://www.lacrossetechnology.com/alerts/temperature-humidity-monitor-general-purpose-dry-probe.php

NBC