Overview

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

Features

• 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.
• T675A models with fixed differential have an electrical rating of 125 VA at 120/208/240 and 277 Vac.
• T675B models have 125 VA pilot duty up to 277 Vac.
• T678 models have a maximum connected load of 2000 VA.

Product Specifications

Application

Regulates temperature of air or liquids in ducts, pipes, tanks and boilers

Dimensions (in.)

5 5/8 in. high x 2 in. wide x 2 5/8 in. deep

Dimensions (mm)

143 mm high x 51 mm wide x 67 mm deep

Item Type

Product

Frequency

50 Hz; 60 Hz

Approvals, Underwriters Laboratories Inc.

UL Listed: E4436, Vol. 4, Sec. 11, Guide XAPX

Approvals, Canadian Standards Association

CSA Listed: Report -1

Contact Ratings

120 Vac-- 8.0 AFL, 48.0 ALR; 240 Vac-- 5.1 AFL, 30.6 ALR; 277 Vac--4.2 AFL, 25.2 ALR

Voltage

120 Vac or 240/277 Vac

Setpoint Temperature Range (C)

13 C to 79 C

Setpoint Temperature Range (F)

55 F to 175 F

Operating Temperature Range (F)

200 F Maximum

Operating Temperature Range (C)

93 C Maximum

Output

relay

Relay Outputs

1 SPDT

Sensor Inputs

1

Sensor Element

Copper bulb

Capillary Length (ft)

20 ft

Capillary Length (m)

6.1 m

Bulb Size (in.)

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

Bulb Size (mm)

13 mm x 90 mm

Differential Temperature (F)

3.6 F to 12 F

Differential Temperature (C)

2 C to 6.7 C