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Old 10-19-2017, 06:09 PM   #1
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Programmable thermostats

Anyone have one for their diesel heater? I have a two zone Espar D5 hydronic unit and was curious if anyone has done this?

It would be nice to program a lower temp during the day while we are away to conserve fuel.
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Old 10-19-2017, 07:21 PM   #2
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We have installed one on Ebbtide and it works great. Ours is a single zone.
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Old 10-19-2017, 07:45 PM   #3
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We have installed one on Ebbtide and it works great. Ours is a single zone.

Which thermostat did you use?
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Old 10-19-2017, 10:27 PM   #4
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I use the 7-day timer that came in an espar kit, so an inexpensive option for us to try. I use it to kick the heater on at a predefined time, so not a thermostat but works well enough that I have not bothered with one. I usually set it to come on an hour before we get up in the am or an hour before we return from an outing. Simple and works well enough.
Single zone only though.
I would be interested in what you find out for thermostats however, so if you can, post what you discover.
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Old 10-20-2017, 10:49 AM   #5
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I use the 7-day timer that came in an espar kit, so an inexpensive option for us to try. I use it to kick the heater on at a predefined time, so not a thermostat but works well enough that I have not bothered with one. I usually set it to come on an hour before we get up in the am or an hour before we return from an outing. Simple and works well enough.
Single zone only though.
I would be interested in what you find out for thermostats however, so if you can, post what you discover.
Which heater do you have? Mine is a D5 (2008) model.
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Old 10-20-2017, 04:47 PM   #6
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Same - D5. Note that I use it for the forward sections of the boat (pilot house & staterooms) and have a Dickenson Antarctic for the main salon. I didn't think the D5 would be enough for our entire boat, but - as I have not tried - don't know for sure. I would be interested if it is sufficient for yours.
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Old 10-21-2017, 01:48 AM   #7
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Look up Sure Marine in Seattle. They have programmable thermostats for all the major diesel systems.

I use a digital thermostat with day/night/vacation mode. Not as nice as a 24/7 programmable but I have 4 zones to deal with and I donít have a programmable pattern of use.
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Old 10-21-2017, 09:33 AM   #8
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Look up Sure Marine in Seattle. They have programmable thermostats for all the major diesel systems.

I use a digital thermostat with day/night/vacation mode. Not as nice as a 24/7 programmable but I have 4 zones to deal with and I donít have a programmable pattern of use.

Did you replace the ďmasterĒ thermostat with the programmable one? Or did you replace all the zones?
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Old 10-21-2017, 11:58 AM   #9
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I replaced all the zones. I have a hurricane hydronic system. My cost was $40 a zone.
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Old 10-22-2017, 07:41 PM   #10
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I have three thermostats on a single loop hurricane hydronic furnace. The thermostat in the forward stateroom failed last month and I replaced it with a programmable Honeywell thermostat from Home Depot. For $21 I figured I could not go wrong. It is a battery powered unit, just like what it was replacing, and was a direct replacement for the failed unit.

Marty......................
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Old 10-23-2017, 12:44 AM   #11
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I talked to Sure Marine yesterday. They said any battery operated programmable thermostat would work on a diesel heater system. They also said you shouldnít run a diesel heater when off the boat. Iím not making a statement, just passing what they said.
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Old 10-30-2017, 07:20 PM   #12
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I found out my model is too old for the Espar programmable thermostats. So maybe something off the self will work?
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Old 10-31-2017, 12:46 AM   #13
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You will probably save money.
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