Honeywell T675A, T675B, T678A Catalog Page

Temperature Controllers

1-7/32

(31)

T675B DOES NOT HAVE AN ADJUSTMENT KNOB.

T675B HAS A MANUAL RESET BUTTON (INDICATED BY DASHED LINES).

TRADELINE MODELS T675A, T678A ONLY – NOREL COVER INCREASES THESE DIMENSIONS BY APPROXIMATELY 1/8 IN. (3).

2 (51)

7/8 (22) DIA KNOCKOUT (BOTH ENDS)

15/16 (24)

4-3/16

(106)

11/16

(18)

3/8

(10)

13/64 (5) [3]

7/32 (6) DIA [3]

21/32 (17) DIA

3/8 (10) DIA [3]

2-1/8 (54)

2-1/4 (57)

2-5/8 (67)

5-5/8 (143)

1-3/4

(45)

1-15/16

(49)

2-7/16 (62)

3/32 (2)

M23928

T675A,B; T678A Remote Bulb Controllers

Remote bulb thermostats regulate temperature of air or liquids in ducts, pipes, tanks and boilers.

• Suitable for applications requiring temperature control of air or liquids where controller must be placed outside the sensing area

• Typical uses include control of dampers and valves in heating, cooling and heating-cooling systems

• Fast response models (available for use in return air duct) operate approximately four times faster than standard models

• Controller can be mounted in any position

• Ambient temperature compensation provides good temperature control

• Refer to T775 Electronic Remote Temperature Controller where more exact control is required and/or remote controller location is preferred

• T678 models have a maximum connected load of 2000 VA

Dimensions in inches (millimeters)

Typ e: Remote bu b Application: Regulates temperature of air or liquids in ducts, pipes,

tanks and boilers

Volt ag e: 120 Vac or 240/277 Vac Frequency: 50 Hz; 60 Hz Output Type: Relay Number of Sensor Inputs: 1 Approvals Canadian Standards Association: CSA Listed: Report -1 Underwriters Laboratories, Inc: UL Listed: E4436, Vol. 4, Sec. 11,

Guide XAPX

Contact Ratings (120 Vac) (240 Vac) (277 Vac)

T675A with Adjustable Differential Temperature

T675A with Fixed Differential Temperature

8.0 AFL,

48.0 ALR

5.1 AFL,

30.6 ALR

4.2 AFL,

25.2 ALR

125 VA 125 VA 125 VA

T675B 125 VA 125 VA 125 VA T678A 8.0 AFL,

48.0 ALR

5.1 AFL,

30.6 ALR

4.2 AFL,

25.2 ALR

348 customer.honeywell.com 70-6910

Temperature Controllers

Maximum Operating

Product Number

T675A1045/U

T675A1102/U

T675A1136/U

T675A1243/U

T675A1425/U

T675A1458/U

* T675A1508/U

* T675A1516/U

T675A1524/U

* T675A1532/U

* T675A1540/U

* T675A1565/U

* T675A1706/U

T675A1771/U

T675B1002/U

T675B1010/U

T675B1028/U

T678A1015/U

T678A1163/U

T678A1361/U

* T678A1437/U

* TRADELINE models • SUPER TRADELINE models

Temperature

125 F 52 C 0 F to

280 F 138 C 160 F

125 F 52 C 0 F to

125 F 52 C 167 F

200 F 93 C 55 F to

125 F 52 C 0 F to

200 F 93 C 55 F to

280 F 138 C 160 F

200 F 93 C 55 F to

125 F 52 C 0 F to

200 F 93 C 55 F to

125 F 52 C 30 F to

125 F 52 C -20 F to

125 F 52 C 0 F to

125 F 52 C 5 F to

200 F 93 C 55 F to

125 F 52 C 0 F to

Setpoint Temperature Range

-18 C to

100 F

+38 C

71 C to

to 260

127 C

-18 C to

100 F

+38 C

75 C to

to 257

125 C

13 C to

175 F

79 C

13 C to

175 F

79 C

-18 C to

100 F

+38 C

-18 C to

100 F

+38 C

13 C to

175 F

79 C

71 C to

to 260

127 C

13 C to

175 F

79 C

-18 C to

100 F

+38 C

-18 C to

100 F

+38 C

13 C to

175 F

79 C

-1 C to

50 F

+10 C

-1 C to

50 F

+10 C

-29 C to

+50 F

+10 C

-18 C to

100 F

+38 C

-15 C to

95 F

+35 C

13 C to

175 F

79 C

-18 C to

100 F

+38 C

Differential Temperature

3 F to

1.7 C to

10 F

5.6 C

3 F to

1.7 C to

10 F

5.6 C

1 F fixed 0.6 C

fixed

3 F to

1.7 C to

10 F

5.6 C

3.6 F to

2 C to

12 F

6.7 C

1 F fixed 0.6 C

fixed

3 F to

1.7 C to

10 F

5.6 C

1 F fixed 0.6 C

fixed

1 F fixed 0.6 C

fixed

3 F to

1.7 C to

10 F

5.6 C

3.6 F to

2 C to

12 F

6.7 C

3 F to

1.7 C to

10 F

5.6 C

3 F to

1.7 C to

10 F

5.6 C

1 F fixed 0.6 C

fixed

Manual

Reset

Manual

Reset

Manual

Reset

3 F fixed 1.7 C

fixed

3 F fixed 1.7 C

fixed

3.6 F

2.0 C

fixed

3 F fixed 1.7 C

fixed

Interstage Differential Temperature Bulb Size

——1/2 in. x

— — coil 1 1/2

——1/2 in. x

3 F to 10 F adjustabl e

3.6 F to 12 F adjustabl e

3 F to 10 F adjustabl e

1.7 C to

5.6 C adjustabl e

1.7 C to

5.6 C adjustabl e

2.0 C to

6.7 C adjustabl e

1.7 C to

5.6 C adjustabl e

4 3/16 in.

3 9/16 in.

4 3/16 in.

3 9/16 in.

4 3/16 in.

3 9/16 in.

4 3/16 in.

in. diameter x 5 in.

4 3/16 in.

1/2 in. x 4 3/16 in.

1/2 in. x 3 9/16 in.

1/2 in. x 4 3/16 in.

Capillary Length

13 mm dia. x 106 mm long

13 mm x 90 mm20 ft 6.1 m 1 SPDT Copper

13 mm x 90 mm5 ft 1.5 m 1 SPDT Copper

13 mm dia. x 106 mm long

13 mm x 90 mm20 ft 6.1 m 1 SPDT Copper

13 mm dia. x 106 mm long

13 mm x 90 mm5 ft 1.5 m 1 SPDT Copper

13 mm x 90 mm20 ft 6.1 m 1 SPDT Copper

coil 38.1 mm x 127 mm

13 mm dia. x 106 mm long

13 mm x 90 mm20 ft 6.1 m 2 SPDT

13 mm dia. x 106 mm long

20 ft 6.1 m 1 SPDT Stainless

20 ft 6.1 m 1 SPDT Copper

5 ft 1.5 m 1 SPDT Copper

5 ft 1.5 m 1 SPDT Fast

10 ft 3 m 1 SPDT Copper

20 ft 6.1 m 1 SPDT Copper

10 ft 3 m 1 SPDT Copper

20 ft 6.1 m 2 SPDT

5 ft 1.5 m 2 SPDT

Output

switch contact s

Sensor Element Comments(F) (C) (F) (C) (F) (C) (F) (C) (inch) (mm) (ft) (m)

steel bulb

bulb

response capillary

bulb

Copper bulb

Stainless Steel Bulb

—

Celsius model

—

Includes 107324A Duct Bulb Holder

—

Includes 107324A Duct Bulb Holder

Fast response model, includes 131524A Duct Bulb Holder

Fast response model, includes 13154A Duct Bulb Holder

—

maximum connected load = 2000VA

maximum connected load = 2000VA; Celsius model

maximum connected load = 2000VA

Commercial

Components

70-6910 349

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