• 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.Remote Bulb Controller, 0 to 100F Setpoint Range, Celsius Model, 20 ft Copper Bulb| Interstage Differential Temperature (C) | 1.7 C to 5.6 C adjustable |
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| Contact Ratings (277 Vac) | 4.2 AFL, 25.2 ALR |
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| Output | 2 SPDT switch contacts |
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| Interstage Differential Temperature (F) | 3 F to 10 F adjustable |
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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 | Regulates temperature of air or liquids in ducts, pipes, tanks and boilers |
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| Comments | maximum connected load = 2000VA |
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| Bulb Size (in.) | 1/2 in. x 4 3/16 in. |
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| Sensor Element | Copper bulb |
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| Capillary Length (ft) | 20 ft |
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| Bulb Size (mm) | 13 mm dia. x 106 mm long |
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| Setpoint Temperature Range (F) | 0 F to 100 F |
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| Capillary Length (m) | 6.1 m |
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| Maximum Operating Temperature (F) | 125 F |
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| Setpoint Temperature Range (C) | -18 C to +38 C |
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| Maximum Operating Temperature (C) | 52 C |
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| Differential Temperature (F) | 3 F fixed |
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| Voltage | 120 Vac or 240/277 Vac |
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| Differential Temperature (C) | 1.7 C fixed |
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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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| Approvals, Underwriters Laboratories Inc | UL Listed: E4436, Vol. 4, Sec. 11, Guide XAPX |
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Product Family
| Model Number | Decription | Manufacturer | Price | Avail. Qty | |
|
12622AA
|
T678A Remote Bulb Controllers
|
Honeywell, Inc.
|
Call for Pricing
|
0
|
View More Info
|
|
T678A1015
|
T678A Remote Bulb Controllers
|
Honeywell, Inc.
|
$552.31
|
6
|
Add To Cart
|
|
T678A1015U
|
T678A Remote Bulb Controllers
|
Honeywell, Inc.
|
$552.31
|
6
|
View More Info
|
|
T678A1080
|
T678A Remote Bulb Controllers
|
Honeywell, Inc.
|
$131.55
|
1
|
View More Info
|
|
T678A1163
|
Remote Bulb Controller, 5 to 95F
|
Honeywell, Inc.
|
$564.22
|
2
|
Add To Cart
|
|
T678A1361
|
Remote Bulb Controller, 55 to 175F
|
Honeywell, Inc.
|
$415.05
|
1
|
Add To Cart
|
|
T678A1437
|
Remote Bulb Controller, 0 to 100F Setpoint Range, 5 ft Copper Bulb
|
Honeywell, Inc.
|
$497.77
|
6
|
Add To Cart
|
|
T678A1445
|
Remote Bulb Controller, 55 to 175F
|
Honeywell, Inc.
|
$413.64
|
7
|
Add To Cart
|
|
T678A1478
|
Remote Bulb Controller, 0 to 100F
|
Honeywell, Inc.
|
$397.25
|
1
|
Add To Cart
|
|
T678A1494
|
Remote Bulb Controller, 55 to 175F
|
Honeywell, Inc.
|
$268.54
|
1
|
Add To Cart
|
|
T678A1627
|
Remote Bulb Controller, 0 to 100F
|
Honeywell, Inc.
|
Call for Pricing
|
0
|
View More Info
|
|
T678A1700
|
T678A Remote Bulb Controllers
|
Honeywell, Inc.
|
Call for Pricing
|
0
|
View More Info
|
Cross Reference
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 Functional |
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| Manufacturer Suggested Replacement |
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| Functional |
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| Manufacturer Suggested Replacement |
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| Functional |
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| Manufacturer Suggested Replacement |
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| Functional |
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| Manufacturer Suggested Replacement |
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| Functional |
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| Manufacturer Suggested Replacement |
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All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
UPS Hoilday Delivery Schedule
For more infomation about Returns visit Returns
For more informatrion about Warranty visit Warranty page.
You can also find answers to some common questions on our FAQ page
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