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T6380 Series 

Electronic Fan Coil Thermostats 

APPLICATION 

The T6380 series of electronic fan coil thermostats provide 
precision line voltage control of fan-forced Heating, Ventilat­
ing and Air Conditioning equipment.  Models are available for 
cooling-only, manual heat-cool changeover, or remote heat­
cool changeover systems.  Hydronic source heat-cool 
systems may be two or four-pipe configuration with 0, 1, or 2 
valves.  Fan control options include constant, cycled, or user­
selectable "On-Auto" operation.  Manual fan speed selection 
is standard.  All models feature an “Off” switch. 

PRODUCT DATA 

FEATURES 

•  

Electronic temperature sensing provides energy­

efficient, precision operation for maximum comfort. 

• 

 Contemporary white sculpted styling. 

• 

    Vertical or horizontal mounting configurations. 

•  

Adjustment ranges 55

°

 to 90

°

F or 13

°

 to 32

°

C. 

• 

 Easy-to-use set point knob. 

• 

    LED system status indicator. "OFF" de-energizes all

 connected loads. 

• 

 Three level fan speed selection. 

• 

 Constant, cycled, or on-auto selectable fan operation
 available. 

• 

    Models for manual or remote heat-cool changeover,

      heating-only, or cooling-only systems. 

• 

 Models for 2 or 4-pipe systems. 

• 

 Rugged molded thermoplastic housing with captive

 mounting screws, mounts on single-gang NEMA­

standard (U.S.) electrical box. 

• 

 Screw terminal block connections. 

• 

 Suitable for inductive-rated loads such as valves,
 relays, contactors and fans. 

• 

 Range stops and cover locking kit available. 

• 

 UL Listed.  CSA Certified. 

Contents 

Specifications .................................................................. 2 
Ordering Information ....................................................... 2 
Installation ....................................................................... 3 
Wiring .............................................................................. 3 
Operations .................................................................... 5 
Check-out .....................................................................  5 

M.O'D.  8/98  © Honeywell Ltd.—Honeywell Ltée. 1998  Printed in Canada  Form Number 95C-10758 

Summary of Contents for T6380

Page 1: ...y white sculpted styling Vertical or horizontal mounting configurations Adjustment ranges 55 to 90 F or 13 to 32 C Easy to use set point knob LED system status indicator OFF de energizes all connected loads Three level fan speed selection Constant cycled or on auto selectable fan operation available Models for manual or remote heat cool changeover heating only or cooling only systems Models for 2 ...

Page 2: ... horizontal mount Wiring Connections Screw terminal block suitable for 1 14 AWG 2 18 AWG or 1 1 5 mm2 copper wire Approvals CSA Certified LR1322 Underwriters Laboratories Listed E47434 Accessories 272824A T6380 Range stop cover locking kit 272827A T6380 replacement cover with Cool Warmer Fig 1 Nominal dimensions in inches and millimetres 50 60 Hz 110 130V 208 V 220 240V 277 V Full Load Amps 5 8 3 ...

Page 3: ... terminal block with 1 14 AWG or 2 18 AWG solid or stranded copper wires NEUTRAL Fig 2a T6383A for 2 pipe constant fan cooling only T6383A Fig 3 T6383B 2 pipe heat cool manual changeover constant L2 L1 HOT NEUTRAL FAN RED BLU BRN Heat ORG Cool YEL Off 1 2 3 WHT VIO BLK fan TO COOLING VALVE T6383B WHT L2 NEUTRAL L1 HOT Med BLU Hi BRN Lo RED BLK SYSTEM FAN Heat Off Cool Heat ORG Cool YEL TOHEATING C...

Page 4: ...g only cycled fan Fig 6 T6381B 2 pipe heat cool manual changeover cycled fan T6381A T6381B FAN RED BRN Heat ORG Cool YEL Off 1 2 3 WHT VIO TO COOLING VALVE BLK External jumper BLU L2 HI MED LO L1 HOT WHT L2 NEUTRAL L1 HOT BLU BRN RED BLK SYSTEM FAN Heat Off Cool Heat ORG Cool YEL FAN HI MED LO TO HEATING COOLING VALVE External jumper FAN NEUTRAL Fig 5b T6381A 2 pipe heating only cycled fan Fig 7a ...

Page 5: ...The speed at which the air is circulated is con trolled by the FAN switch Continuous ON or intermittent HI FAN MED LO AUTO fan operation is determined by model number CHECK OUT Turn power on Check out operation according to the SYSTEM switch present SYSTEM switch OFF de energizes valve and fan circuits Fig 8b T6387A 2 pipe heating only on auto fan Models T6381B T6383B SYSTEM HEAT OFF COOL Set the ...

Page 6: ...s marked 55 to 90 F or 13 to 32 C depending on the model Set the dial indicator marker to the desired temperature CALIBRATION T6380 thermostats are accurately calibrated at the factory under controlled conditions Do not attempt to field calibrate this device This thermostat has line voltage connections Home and Building Control In U S A Helping You Control Your World Honeywell Ltd Honeywell Inc 15...

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