Right first time!
For installers, whether fitting like-for-like replacements or an upgrade, it is important that the new control is compatible with the existing system parameters and the wiring.
Horstmann has recently published a completely updated version of its highly popular wiring guide that lists the most popular manufacturers of programmers and the Horstmann equivalent for replacement.
In addition, the guide provides an easy, colour coded guide to the type of replacement, ranging from simple plug in and replace to more complex installations where possibly re-wiring or a new backplate is needed.
As well as programmers, the pocket size guide also gives replacement guidance for timeswitches.
Also new from Horstmann is a thermostat replacement guide which similarly lists competitor model details and the suggested Horstmann replacement. Many of the latest generation of Horstmann room thermostats feature TPI technology which independent (TACMA) tests have proven to be capable of saving up to 10% in energy costs.