outdoor reset control

ricK_10

Found old honeywell control I believe they are using as a outdoor reset control.Called a couple wholesalers about it could not cross ,Does honeywell have a tech line or website.The control is T700 1001d .Looks like a switching relay with a rheostat built in (1960).

Unknown

Honeywell

has a site to search for controls and literature related to them.This one is not on here however.

Glenn

http://hbctechlit.honeywell.com/

BillW@honeywell

The closest I can find...

is a T7001, which was an outside temp sensor that used either a bimetal and/or a mercury switch to provide a temperature input to one of our early "700" series electronic reset controls. It is obsolete, and has no direct replacement. However, if you are working with residential or light commercial, try our AQ series Aquatrol Reset Systems, the AQ475 does outside air reset by varying boiler run tme, the AQ675 uses an actuator on a 3-way mixing valve to provide reset and the AQ775 operates either a 4-way rotary valve or an injection pump. Go to the technical literature website http://hbctechlit.honeywell.com
for tech sheets.

[Deleted User]

The T7001F1014

served 2 functions.

Terminals D & A served as a temperature cut off device.

Terminals B & C provided a resistance feed back circuit to a W902, or 903 Reset Control, or a Series 70 single ramp mod motor for mixing reset.

Not unusual to see the 902 replaced w/ another control & the 7001 left as a temperature cutoff/warm weather shutdown device.