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Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).
The House Control 402 is designed to operate as part of a complete hydronic heating system with tekmarNet®2 (tN2) thermostats. It can provide operation of two outdoor reset water temperatures in addition to Domestic Hot Water and Setpoint capabilities. It is easy to add more zones, add schedules or other convenient accessories through the use of the tekmarNet®4 (tN4) Expansion terminals.
(based on 4 reviews)
of respondents would recommend this to a friend.
Reviewed by 4 customers
Displaying reviews 1-4
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tn2 not good for solar, poor service
By Solar Installer
Comments about tN2 House Control:
I was using the tn2 for boiler control integrated with a solar hot water system. There is no way to program this boiler control to work with a solar system effectively. Programming in conjuntion with the Tekmar thermostats is extremely complex and difficult.The mix relay fried and was only putting out 90 volts to pump. I sent it in for repair and after six weeks they say it will be another four weeks. I am told they would prefer I buy a second tn2 while they check out the first one. Meanwhile winter is approaching. UNACCEPTABLE SERVICE!
Bottom Line No, I would not recommend this to a friend
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Works great, easy to set up and operate
from Huntington Beach, CA
Great tech support, advice. I got the right product and it worked on the first try.
Bottom Line Yes, I would recommend this to a friend
Great product, fun as a trip to dentist
from New Jersey
Im not an professional, Im a tinkerer for systems outside of normal plumbers expertise, such as hydronic floor heating combined with pellet boiler hook-in to an existing boiler loop, pre heating domestic hot water with solar panels and odds and ends people probably do more as a hobby than out of practicality. The last Tekmar product I used was 25 years ago, an analogue 228 that is still doing its job controlling a mixing valve on a hydronic floor system. I would have prefered to use the old stuff and dreaded learning about the newer house controlssuch as the 400 series. Im not happy in general with the direction of the niche markets for controls and distrabution devices. There has been a trend of buyouts and use of cheap materials and bad styling to be competitive. as always, you have to mix and match different maker's components, that have little desire to work together. For this purpose the 402 lacks muchprogramability, but does have an amazing amount of input combinations to provide work around possibillities. Getting to understand the 402 was as bad as I feared, and even making the choice which house controller to buy, let alone other mix controllers offered by tekmar, was daunting. Its not that the instructions are bad, It may be that its necessary to take a course or 3 to understand the myrid uses of this controller. I would say the installation of this controller is out of the question for joe plumber or a homeowner. Tekmar does answer any question by email in about 24 hours, But what question to ask? Its better to go directly to Tekmar, the website will try to shunt you over to a local representitive, which I didnt try, but was sceptical of. The price of about 515 from Pex Supply was very agreeable, I don't know why its necessary to shop around the inflated manufactures suggested retail which is about 1000. I cant speak to the comparison with other controllers, though many are made by Tekmar anyway and rebadged. Might as well get it from the maker, right? t
from Seward, Alaska
The Tekmar 402 house controller was easy to install, works more efficiently and is smarter than anything else on the market today. [...]
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