Is the Differential on the Honeywell Thermostat (T6052B) Adjustable?

[Nick in Manitou]

The Cruisair unit in our master stateroom works...but, when in heat mode it gets too warm and then too cold. (Have not had the opportunity to test the AC yet, it has been too cold!)

I have been reading through a lot of the threads here on the forum that talk about these old Honeywell thermostats and it was mentioned in one (from 2014) that the differential on these thermostats should be 2 degrees.

I have read about replacing these older units with the Coastal Climate Control FX-1, but I am having to watch the budget right now and was hoping that someone would say that the differential in these old Honeywell units would be adjustable.

Thanks,
Nick

 

[SKYCHENEY]

No. Just replace it with a FX1 controller. I did years ago and would never go back.

https://www.coastalclimatecontrol.c...Standard-Display/p/95699124/category=25823691

 

[Briankinley2004]

I have them on mine and the red indicator is at least 2 degrees wide. They have a wide swing. I would guess 3-4 degrees but they are original 1985. someone upgraded the salon unit and I have had to replace all the electrical components and they were only 10 years old or so. Im a fan of the old school mechanical just because of their reliability

 

[Boatsb]

Look at replacing the thermostat with a more modern version. I'm sure Honeywell has a version that's more modern.

Best case is still upgrading to a new modern integrated ac controller like sky suggested.

 

[Nick in Manitou]

SkyCheney, I was afraid that would be the answer. Since it works (sort of) I hate to replace it, but I will probably have to face it at some point soon.

BrianKinley, I will stay with this old school hardware if I can, but the difference between when the heat cycles off and when it cycles on again is pretty dramatic at this point. Perhaps I will venture into this device and see if a good cleaning would make it more responsive.

I like the idea of a digital thermostat, so that I know pretty much what I am setting the thing at, but at this point I am trying to prioritize the items I need to spend money on!

Thanks!
Nick

 

[Boatsb]

And look at where the temp sensor is in relation to the vents. I moved the temp sensor on my salon unit to change the way it cycles.

 

[Briankinley2004]

I havent taken mine apart but pretty sure there is a bimetal spring that is doing the work. I doubt mercury would be used on a boat. I will say my boat sat quite a bit before I bought her. The 3 units I have with these seem to have gotten better with use. There should be some kind of anticipator in them you can adjust. You should be able to find something searching online that would at least be generic. Mine are the same exact ones as yours. If I get a chance I will take apart and see if I can find the anticipator

 

[Nick in Manitou]

Scott, I have considered the location of the thermostat with regard to its sensing the actual temperature in the room, and it seems to be in a pretty good spot. (There had been some modifications to the vent in that area and a lot of conditioned air was leaking into the area right around the thermostat. I have sealed up those leaks and the temp in that area now seems to be pretty much average for the stateroom in general.) Thanks for the suggestion, though.

Brian, It sure would be handy if there is an adjustment available!

Boatsb, I did a quick check online and was hoping to find a listing of a newer design (digital) of thermostat that was stated to be a replacement for the T6052B but had no luck.


Nick

 

[SKYCHENEY]

Be careful. That Honeywell thermostat is line voltage. Don't take it apart without killing the power.


The FX1 is not difficult to install and you can remove your PWX box as well so no more triacs and triggers and other pricey Cruisair parts.

 

[Nick in Manitou]

Skycheney,

Will do. I hate those shocking surprises!

I do appreciate the reminder!

Nick

 

[madhatter1]

We use small 1500 watt space heaters for main heat and then set the onboard units so that they only kick on when the space heaters cannot keep up. It sounds cheesey but it keeps you from getting hot air blown on you and temps stay very stable.

We use them on the boat and we have a toy hauler camper we use in the winter months and do the same thing.

I do hate the narrow heat/cool deadband because when the wife cranks down the temp and it gets too cold changes the setpoint to bring on heat so I have to turn the unit off and let temp gradually rise.