• 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.Changeover Temperature Controller, two stage| Output | 2 SPDT switch contacts |
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| Overview | Remote bulb thermostats regulate temperature of air or liquids in ducts, pipes, tanks and boilers. |
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| Application | Changeover temperature control |
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| Bulb Size (in.) | 5/16 in. x 11 11/16 in. |
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| Sensor Element | Copper bulb |
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| Capillary Length (ft) | 5 1/2 ft |
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| Bulb Size (mm) | 8 mm x 297 mm |
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| Setpoint Temperature Range (F) | 55 F to 85 F |
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| Capillary Length (m) | 1.7 m |
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| Maximum Operating Temperature (F) | 130 F |
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| Setpoint Temperature Range (C) | 13 C to 29 C |
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| Maximum Operating Temperature (C) | 54 C |
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| Differential Temperature (F) | 2 F |
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| Voltage | 120 Vac or 240 Vac |
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| Differential Temperature (C) | 1.1 C |
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| Contact Ratings (120 Vac) | 8.0 AFL, 48.0 ALR |
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| Contact Ratings (240 Vac) | 5.1 AFL, 30.6 ALR |
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| Dimensions (in.) | 5 5/8 in. high x 2 in. wide x 2 5/8 in. deep |
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| Dimensions (mm) | 143 mm high x 51 mm wide x 67 mm deep |
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| Approvals, Canadian Standards Association | CSA Listed: Report -1 |
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Product Family
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