Honeywell T6380 User Manual

Electronic Fan Coil Thermostats

APPLICATION

The T6380 series of electronic fan coil thermostats provide
precision line voltage control of fan-forced Heating, Ventilat­ing and Air Conditioning equipment. Models are available for
cooling-only, manual heat-cool changeover, or remote heat­cool 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 user­selectable "On-Auto" operation. Manual fan speed selection
is standard. All models feature an “Off” switch.

T6380 Series

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

T6380 - SPECIFICATIONS, ORDERING INFORMATION

SPECIFICATIONS

MODELS:

Fan Coil System

2-pipe System

• Cooling only

• Heating only

2-pipe Heat-Cool

• Manual Change/Over

• Seasonal, auto C/O

• Seasonal, auto C/O
with aux. electric heat

4-pipe Heat-Cool

• Manual C/O

Electrical Ratings:

T6380 Series - Power Supply: 110-130 or 208-277 Vac

T6381, T6387 - Output Rating, cycled (“Auto”) fan control

* Equivalent to NEMA 1/8 horsepower rating for a hermetically-sealed

T6383 – Output Rating, constant fan operation

Thermostat (Heat and Cool outputs):

Fan (Air Handler):

50-60 Hz

Full Load Amps**

Locked Rotor

** Equivalent to NEMA 1/4 horsepower rating for a hermetically-sealed

+10/-15%, 50-60 Hz.

50-60 Hz 120 V 208 V 230 V 277 V

Full Load Amps* 3.8 2.1 1.9 1.6

Locked Rotor 22.8 12.6 11.4 9.5

Pilot Duty 125 VA

motor such as a compressor. Allowable connected load must be
determined by adding nameplate full load and locked rotor (inrush) ratings
of all loads.

50-60 Hz 120 V 208 V 230 V 277 V

Full Load Amps 3.8 2.1 1.9 1.6

Locked Rotor A 22.8 12.6 11.4 9.5

Pilot Duty 125 VA

Resistive (heat only)

110-130V

motor. Allowable load must be determined from fan nameplate
ratings .

† North American national electrical codes require all ungrounded

conductors to electric resistance heating to be broken at the thermostat
OFF setting. The 208V and 230V resistive ratings are not UL approved.
The 230V rating is site-approveable in Canada on 416V 4-wire Wye
distributed systems. The non-inductive rating for 230V “a.c. mains”
with one ungrounded conductor is 6.0A.

3-Speed Fan Operation

Constant

T6383A T6381A T6387A

Fig. 2a Fig. 5a Fig. 8a

T6383A T6381A T6387A

Fig. 2b

T6383B

Fig. 3

T6383A

Fig. 2c

T6383B

Fig. 4b Fig. 7b

T6383B

Fig. 4a Fig. 7a

10.0 A

5.8 3.2

34.8 19.2

Cycled

Fig. 5b Fig. 8a

T6381B N/A

Fig. 6

T6381A

Fig. 5c

T6381B

T6381B

N/A

208 V

220-240V

N/A 5.6

2.9

17.4

On-Auto

T6387A

Fig. 8c

N/A

N/A

277 V

14.4

2.4

Operating range:

32 to + 104 F [0 to +40 C], 5 to 95% RH, non-condensing.

Performance Specifications:

Precision: ±1°F temperature swing [0.9°C differential].
Accuracy: 2°F [1°C] droop with 4 A load.

Dimensions:

See Fig. 1 - Nominal Dimensions.

Mounting:

Direct mounting on single-gang NEMA 2" x 3" flush-mount
or 2" x 4" surface-mount electrical box, or on 4" x 4" box
Models available for vertical or horizontal mount.

Wiring Connections:

Screw terminal block suitable for 1 – 14 AWG, 2 – 18 AWG,

2

or 1 – 1.5 mm

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

ORDERING INFORMATION

Before ordering please determine the following:

1. The body type: 2-way or 3-way

2. The actuator voltage : 24V/50-60Hz

3. The pipe fitting, size, and flow capacity rating (Cv) required.

4. Order Specification Number

5. Accessories, if desired.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Home and Building Control Sales Office (please check the white pages of your phone directory).

2. Honeywell Limited, 155 Gordon Baker Rd., North York, ON M2H 3N7.
In U.S.A. - Honeywell Inc., 1885 Douglas Drive North, Minneapolis, Minnesota 55422-4386 [phone]. International Sales and Service
Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain,
Taiwan, United Kingdom, U.S.A.

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