thermostat question

Roy Tenn

Hi All,

I am a first time poster but long time reader.I work in
Toronto and I am looking for a programmable tstat for a customer that is compatible with the Honeywell T87F subbase
Q539J1154.Right now there is a Honeywell Magicstat H/c model T8112D1120. As it is the fan does not come on in the AUTO position when there is a call for heat.The tstat is controlling a Polaris(combo) tank and a Whalen water cooled A/C-Model VIA-401-1. In the A/C fan auto mode the fan works. Also on a call for heat the circ. pump comes on(normal) BUT the fan does not come on.He insist that it worked before, but I am pretty sure the pgm tstat is not compatible and he needs some kind of heat pump tstat. Any suggestions would be appreciated. Thanks in advance.

Roy

Glenn Harrison_2

If you pull the thermostat off the wall mounting plate...

and look on the back of the t-stat, you should see a slide switch that should say something like gas or F on one end, and elec or E on the other end. if you set the switch to the elec or E position, then the fan (G terminal) will energize on a call for heat, as well as a call for cool.

If you need it, here are two links for the owners and installation manuals.

http://hbctechlit.honeywell.com/techlit/PDF/69-0000s/69-0862.pdf

http://hbctechlit.honeywell.com/techlit/PDF/69-0000s/69-1633.pdf