Outdoor Reset Recommendation

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Old 04-02-14, 11:53 AM
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Outdoor Reset Recommendation

I am looking to install an ODR control and could use some suggestions as to which one to buy, something simple and inexpensive. Its a 3 zone baseboard system, the boiler has a Honeywell R8258D control, a single Taco 007 circulator and no hot water coil or indirect water heater.
 
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Old 04-02-14, 11:10 PM
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What boiler and fuel? (extra characters to make min length)
 
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Old 04-03-14, 04:14 AM
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Outdoor Reset Recommendation

It's a Smith cast iron boiler model GB100 fueled with natural gas.
 
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Old 04-03-14, 09:07 AM
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Just use a tekmar, they're not very expensive.
 
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Old 04-03-14, 01:20 PM
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Outdoor Reset Recommendation

May I presume that the Tekmar 256 would be the best choice for me?
 
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Old 04-06-14, 07:04 PM
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Avoid the Taco Fuel Mizer- SR501-OR

Taco Fuel Mizer - SR501-OR spec's say it will maintain water temp of 140F. When room thermostat is not calling for heat, boiler does not run at all, and water gets cold. When there is call for heat will not start it until water temp drops below 130F or more (+10F delta). The Mizer has no adjustment for base water temp.

Tried a Fuel Mizer and it created big lags in room temp. For some reason Taco linked starting burner to thermostat activation of circulator. They should be separate issues. Many systems are not low mass and take time to raise water temp.
 
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Old 04-06-14, 07:39 PM
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IMO I dont like ODR... Your better off with a thermal imaging control... Works off the t stat...

Just my opinion though...


Take a look here... Hydrostat for Hydrolevel....

Home

And the manual..

http://www.hydrolevel.com/new/images...-3250-Plus.pdf
 
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Old 04-07-14, 11:00 AM
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Outdoor Reset Recommendation

Thanks to all for your inputs. The Hydrostat system seems a good option. I am currently out of town so when I get back home I'll look into further.
 
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