One pipe steam thermostat recommendation

onepipesteamheat

Can someone recommend a programmable thermostat for a one pipe steam heating system in a two-family home? There are people in the house throughout the day and the thermostat is located on the first floor. Since I need to keep the heat at 70 degrees from 7am to 11pm and at 65 degrees from 11:01pm to 6:59am, I would solely like the thermostat to be programmed at those two different temperatures during the aforementioned timeframes.
I have a manual thermostat now for a 90,000 BTU boiler, but I cannot go in and out of my tenants house each morning/night to turn the temperature up and down. I see all of the different thermostats and while there are great options with apps, etc., I really just need it to do something very simple without any intervention from me.

JeffM

I've got a Honeywell TH2110 (Pro 2000) and like it. Simple to program, can be wired or run on batteries. Fairly small and unobtrusive.

Fred

Many of us would suggest the max setback on a steam system should be no more than about 3 degrees. With a 5 degree setback, it will probably take up to 2 hours to bring the house back up to temp. Even a 3 degree set-back will take an hour or so. if your boiler is even modestly over-sized to the amount of connected radiation, it will short cycle (build pressure and be shut down by the Pressuretrol) multiple times during a heating cycle that long.
Look for any Thermostat that is designed for Steam and has "1" cycle per hour as a program option. Honeywell has several models available.

nicholas bonham-carter

A Honeywell VisionPro, can use a remote sensor, which can be mounted where the present thermostat is now, using only 2 wires. Mount the VisionPro on the boiler, and you can control it from there.
It is steam compatible, and can do setbacks, (keep them small), or hold a constant lower temperature, 67 degrees (preferable).--NBC

LionA29

How does the CPH works when satisfying or maintaining the temperature on the thermostat?

Jamie Hall

LionA29 said:

How does the CPH works when satisfying or maintaining the temperature on the thermostat?

In somewhat the same way as the old anticipators did -- it controls how much before reaching the set point the thermostat will turn off. In the case of a cph setting, it's doing it based on time. It also helps to account for how long it takes the system to cool down -- again, based on time. The whole idea is to avoid overshooting the set point.

LionA29

Thanks @Jamie Hall