Product Review: The Honeywell T775 Controller
The Honeywell T775 Series stand alone controllers have now been on the market for several years. This diverse controller offers the technician a multitude of installation options on one small package.
This controller that stands 8 inches wide by 4 inches wide can be mounted anywhere within 1000 feet of its sensor location and be purchased as a standard enclosure or a NEMA 4X enclosure.
The T775 has an EEPROM that saves all values entered. The date and time values are retained for 24 hours after power loss. After power loss of more than 24 hours values may need to be reentered.
IMPORTANT: If a high limit set point is entered into a T775 controller this value is IRREVERSIBLE !!
Voltage: 24/120/240 note: cannot be used for DC voltages
Set Point Range: -40 to 248 F
T775A and B models: relay outputs from 1 SPDT to 4 SPDT (no analog outputs). Sensor inputs 1 to 2. Floating outputs 0-to 2
T775M models: Modulating with analog outputs of 2-10Vdc or 0-10 Vdc or 4-20 mA or Electronic Series 90. Relay outputs from 0 to 4 SPDT. 2 sensor inputs
T775R models: RESET OPTION.. 0 to 2 analog outputs 0 to 4 SPDT relay outputs. 0-2 floating outputs.
Sensors: update display and controller every 1 second
Accessories:
C7031D2003 5 inch immersion sensor with well
C7030B1009 wall mount room sensor
C7100D1001 12 inch Duct Averaging Temperature Sensor
When the need for a standalone controller presents itself think Honeywell and let Stromquist and Company help you select the right controller for your needs. Give us a call… Atlanta 1-800-241-9471 or Orlando 1-800-638-7828
About the author
Mr Jones is our go to guy here at Stromquist. If you need to know something about HVAC Controls, or boilers Bill Jones ( aka Mr. Jones, think of the song Me and Mrs. Mrs.Jones, but with a really smart controls guy instead) is your guy. He is out to improve the world, one HVAC control system at a time.
The latest accurate information and demos on products
Will all the T775M and T775R use a 4-20 signal?
A 4-20 mA signal can be used on the all the Honeywell T775M series controllers. Only the T775R2019, the T775R2027, and the T775R2043 will accept the use of a 4-20 mA signal if you need reset. Almost forgot the Honeywell T775U2006 and T775U2016 will also use a 4-20 mA signal.