Wiring a Horstmann HRT4-B

townman · 10 Mar 2013

Replacing existing thermostat where Blue wire goes to 2, yellow to 3 and red to 1 terminal. Which wires are needed to wire in Horstmann hrt4-b

picasso · 10 Mar 2013

red to 1

yellow to 4

isolate the blue and make safe.

this is assuming you have a honeywell roomstat a the moment.

doitall · 10 Mar 2013

Are you sure picasso.

yes you are right

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Wiring a Horstmann HRT4-B

townman

picasso

doitall

DIYnot Local

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