Low temperature (landlord's) thermostat?

JohnNY

Honeywell used to make a version of the T87 that only went as high as 68° or 70°.
I can't find it. Does anyone know if it is still in production or a simple but limited thermostat by another manufacturer?
TIA
-John

HVACNUT

I don't know what you're looking to spend but with the Honeywell T6 Pro you can adjust the maximum heat setpoint anywhere between 40° and 90°.
You can also make it non programmable to be more T87ish.
I'm sure there are others that offer the same options. 

For some reason I can't upload the manual.

Jamie Hall

I have one. You can't have it, sorry. But I can't see any new ones -- the one I have is at least 40 years old!

ChrisJ

@JohnNY This should have both heat and cool limits you can program in.

https://www.supplyhouse.com/Honeywell-Home-TH5110D1022-FocusPro-Non-Programmable-1H-1C-Large-Display-Thermostat?utm_source=google_ad&utm_medium=Shopping_tm&utm_campaign=Shopping_TM_HPLTV&gclid=CjwKCAiA76-dBhByEiwAA0_s9XJOE3n3Jtn6ej003udQIBedDE05CmMvcKtZeLOmjIsek97-zROFyRoC8P4QAvD_BwE


It has a decent sized screen to make it easier to read. It's non-programmable and about as simple as they come. I installed one for a close friend years ago, as well as one for my dad's garage heat.

realliveplumber

How about a temporary construction thermostat in a locked enclosure?

Waher

https://www.landlordstat.com/

JohnNY

Thanks, guys. All good suggestions considering I can't find what I was looking for and @Jamie Hall is holding out on me. @ChrisJ What stops the tenant from reprogramming the limit to a higher temperature.

STEAM DOCTOR

Nothing is fool proof. Tenants have been known to put ice packs on thermostats.  One landlord put separate thermostats in each apartment (there was one single pipe steam system for entire building) and each tenant was told that they control the each in their apartment. 

yellowdog

ive used a thermostat that is in a secured area wired in series with the one that is in the apartment. set the stat in the secured area to maintain a comfortable temp for the tenant. the tenant can always turn their temp down, but never up higher than the secure stat is set.

ChrisJ

JohnNY said:

Thanks, guys. All good suggestions considering I can't find what I was looking for and @Jamie Hall is holding out on me. @ChrisJ What stops the tenant from reprogramming the limit to a higher temperature.

What stops the tenant from bypassing the thermostat with a paperclip?
Or buying their own $30 thermostat and putting it on the wall?

ethicalpaul

JohnNY said:

Thanks, guys. All good suggestions considering I can't find what I was looking for and @Jamie Hall is holding out on me. @ChrisJ What stops the tenant from reprogramming the limit to a higher temperature.

I bet it has an installer passcode that limits access. It would require factory-reset to bypass that

ChrisJ

ethicalpaul said:

JohnNY said:

Thanks, guys. All good suggestions considering I can't find what I was looking for and @Jamie Hall is holding out on me. @ChrisJ What stops the tenant from reprogramming the limit to a higher temperature.

I bet it has an installer passcode that limits access. It would require factory-reset to bypass that

I highly doubt it on that model, it's way too cheap.
My point was, you're only going to do so much to stop people from tampering. The best way is to charge them for the fuel and don't include it with rent.

But my understanding is that's not always possible, or convenient.

SuperTech

The Honeywell T4 thermostat has those same capabilities as the T6 and is a little less expensive. 

The T10 and the T6 can be installed at the equipment and connected to a wired sensor to prevent the tenant from messing with it. 

mattmia2

ChrisJ said:

JohnNY said:

Thanks, guys. All good suggestions considering I can't find what I was looking for and @Jamie Hall is holding out on me. @ChrisJ What stops the tenant from reprogramming the limit to a higher temperature.

What stops the tenant from bypassing the thermostat with a paperclip?
Or buying their own $30 thermostat and putting it on the wall?

Or tilting the t87 until the set point is where they want it or removing the stop.

EdTheHeaterMan

I wonder if I could make a Landlord Thermostat that has all the looks and features of a regular thermostat. The insides would only have 2 wires for a thermocouple temperature sensor and 2 wires to operate the digital display. No matter what the tenant did with the adjustments the thermostat would only register the actual room temperature and the temperature settings the tenant choose. There would be no actual connection to the boiler room controls.

The thermocouple wires would then connect to a remote control with WiFi capability. That control would be in the secure boiler room and operated the boiler based on the room sensor temperature. The Landlord's engineer (or who ever would get the call for not enough heat) would have access to the WiFi control and be able to see the room temperature and make adjustments accordingly.

But for real... this thermostat is inexpensive by todays standards. You can change the passcode, you just need to remember the pass code to unlock the thermostat. Since we were in the fuel oil business the generally accepted passcode all the employees knew was 1998. The DOT code for fuel oil or diesel on tank trucks.

I wonder if this video will help @JohnNY https://www.youtube.com/watch?v=nOSCUOk4oSk

https://www.supplyhouse.com/Honeywell-Home-TH4110U2005-T4-Pro-Programmable-Thermostat-1H-1C-Heat-Pump-1H-1C-Conventional

ChrisJ

EdTheHeaterMan said:

I wonder if I could make a Landlord Thermostat that has all the looks and features of a regular thermostat. The insides would only have 2 wires for a thermocouple temperature sensor and 2 wires to operate the digital display. No matter what the tenant did with the adjustments the thermostat would only register the actual room temperature and the temperature settings the tenant choose. There would be no actual connection to the boiler room controls.

The thermocouple wires would then connect to a remote control with WiFi capability. That control would be in the secure boiler room and operated the boiler based on the room sensor temperature. The Landlord's engineer (or who ever would get the call for not enough heat) would have access to the WiFi control and be able to see the room temperature and make adjustments accordingly.

But for real... this thermostat is inexpensive by todays standards. You can change the passcode, you just need to remember the pass code to unlock the thermostat. Since we were in the fuel oil business the generally accepted passcode all the employees knew was 1998. The DOT code for fuel oil or diesel on tank trucks.

I wonder if this video will help @JohnNY https://www.youtube.com/watch?v=nOSCUOk4oSk

https://www.supplyhouse.com/Honeywell-Home-TH4110U2005-T4-Pro-Programmable-Thermostat-1H-1C-Heat-Pump-1H-1C-Conventional

Hazmat for Diesel is 1993, no?
It's been 20 years since I thought about that, but I think it's 1993.

EdTheHeaterMan

ChrisJ said:

Hazmat for Diesel is 1993, no?
It's been 20 years since I thought about that, but I think it's 1993.

You are exactly right. There was a spec of dirt on the picture I referenced for that number. 1993

No wonder that combination padlock wouldn't open!

HVACNUT

Do they still make the Accustat?

Mad Dog_2

I picked up about a half a dozen Mercury T-87s brand new in the plastic at a Church Sale upstate New York a few years ago. I savor them for Steam jobs. Mad Dog

Mad Dog_2

I also hoard mercury Vaporstats & P-Trols...nothing works better and if you don't drop them they don't go bad.  Mad Dog

tim smith

If its an old t87 you can use a calibrating wrench and throw calibration off so when you set for 68 it reads 72 but is actually 68. We had an elderly lady once who wanted a new thermostat so we put in a new T87 for her and she loved that it was new looking but same as her old one. ONLY problem was she said we made her system not work as well as it use to. She said her friends would always gush about how warm her house was set at 68. Now with new one she says its cold. Come to find out the room temp on old thermostat would go up to like 74 when set for 68. She was dead set on we screwed something up on her system. Well after month of her not understanding that it just happens to be accurate now, we threw the new one out of calibration and she was happy again.