Temperature Controllers
T678C,E,F Changeover Temperature Controller
Dimensions in inches (millimeters)
15/16
(24)
KNOCKOUT FOR
1/2 CONDUIT (BOTH ENDS)
1
2 (51) |
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2-1/4 (57) |
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2-1/8 (54) |
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3/8 (10) |
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60 |
70 |
80 |
5-5/8 |
4-3/16 |
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(143) |
(106) |
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15/16 |
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(24) |
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3/8 |
1-7/32 |
M13907 |
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(31) |
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(10) |
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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
Type: Remote bu b
Application: Changeover temperature control
Sensor Element: Copper bulb
Contact Ratings (120 Vac): 8.0 AFL, 48.0 ALR
Contact Ratings (240 Vac): 5.1 AFL, 30.6 ALR
Voltage: 120 Vac or 240 Vac
Frequency: 50 Hz; 60 Hz Number of Sensor Inputs: 1
Output: 2 SPDT switch contacts
Output Type: Relay
Contact Ratings (120 Vac):
T678C, T678F: 8.0 AFL, 48.0 ALR
T678E: Control: 2.6 AFL, 15.6 ALR; Hi Limit: 7.4 AFL, 44.4 ALR
Contact Ratings (240 Vac):
T678C, T678F: 5.1 AFL, 30.6 ALR
T678E: Control: 1.3 AFL, 7.8 ALR; Hi Limit: 5.1 AFL, 30.6 ALR
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Maximum |
Setpoint |
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Interstage |
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Operating |
Temperature |
Differential |
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Capillary |
Differential |
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Temperature |
Range |
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Temperature |
Bulb Size |
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Length |
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Temperature |
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Product Number |
(F) |
(C) |
(F) |
(C) |
(F) |
(C) |
(inch) |
(mm) |
(ft) |
(m) |
(F) |
(C) |
Comments |
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T678C1005/U |
205 F |
96 C |
55 F to |
13 |
C to |
5 F |
2.8 C |
3/8 in. x |
10 mm x |
5 1/2 ft |
1.7 m |
— |
— |
— |
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85 F |
29 C |
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3 in. |
76 mm |
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T678E1003/U |
210 F |
99 C |
40 F to |
4 C to |
2 F |
1.1 C |
1/8 in. x |
3 mm x |
17 ft |
5.2 m |
7 F |
3.9 C |
Does not include |
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180 F |
82 |
C |
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42 in. |
1064 m |
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enclosure |
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T678F1002/U |
130 F |
54 C |
55 F to |
13 |
C to |
2 F |
1.1 C |
5/16 in. x 11 |
8 mm x |
5 1/2 ft |
1.7 m |
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85 F |
29 |
C |
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11/16 in. |
297 mm |
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352 |
customer.honeywell.com |
70-6910 |
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