Honeywell T775A2009 manual Proportional temperature controllers, T991

Page 6

proportional temperature controllers

T991

For modulating control of water or air temperature in ducts, tanks and similar applications.

•Fast response models (for duct mounting) have coiled sensing

element giving at least four times faster response than standard models.

•Ambient temperature compensated for the case and tubing.

•Sensing element capillary tubing allows remote mounting of sensing element.

•Setpoint may be read and adjusted through cover.

•Throttling dial inside case adjusts proportional throttling range.

T991

ProportionalTemperature Controllers

 

Setpoint

 

 

 

Capillary

Throttling

 

 

Temperature

 

Relay

 

Length

Range

 

Part Number

˚F

˚C

Modulating Output

Outputs

Element Type

Feet

Meters

˚F

˚C

Comments

T991A1004

0˚ F to 100˚ F

-18˚ C to +38˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1012

0˚ F to 100˚ F

-18˚ C to +38˚ C

One 135 Ohm Output

N/S

Copper bulb

20 ft

6.1 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1061

160˚ F to 260˚ F

71˚ C to 127˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1079

160˚ F to 260˚ F

71˚ C to 127˚ C

One 135 Ohm Output

N/S

Copper bulb

20 ft

6.1 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1095

5˚ F to 95˚ F

-15˚ C to +35˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

Celsius Scale

 

 

 

 

 

 

 

 

 

 

 

T991A1103

N/S

-15˚ C to +35˚ C

One 135 Ohm Output

N/S

Copper bulb

20 ft

6.1 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

Celsius Scale

 

 

 

 

 

 

 

 

 

 

 

T991A1152

N/S

75˚ C to 125˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

Celsius Scale

 

 

 

 

 

 

 

 

 

 

 

T991A1186

55˚ F to 175˚ F

13˚ C to 79˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1194

55˚ F to 175˚ F

13˚ C to 79˚ C

One 135 Ohm Output

N/S

Copper bulb

20 ft

6.1 m

3.5˚ F to 36˚ F

1.9˚ C to 20˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1210

59˚ F to 167˚ F

15˚ C to 75˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

Celsius Scale

 

 

 

 

 

 

 

 

 

 

 

T991A1244

55˚ F to 175˚ F

13˚ C to 79˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3.5˚ F to 36˚ F

1.9˚ C to 20˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1269

55˚ F to 175˚ F

13˚ C to 79˚ C

One 280 Ohm Output

N/S

Copper bulb

20 ft

6.1 m

3.5˚ F to 36˚ F

1.9˚ C to 20˚ C

280 ohm

 

 

 

 

 

 

 

 

 

 

 

T991A1343

55˚ F to 175˚ F

13˚ C to 79˚ C

One 280 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3.5˚ F to 36˚ F

1.9˚ C to 20˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1350

55˚ F to 175˚ F

13˚ C to 79˚ C

One 135 Ohm Output

N/S

Copper averaging

24 ft

7.3 m

3.5˚ F to 36˚ F

1.9˚ C to 20˚ C

N/S

element

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T991A1426

0˚ F to 100˚ F

-18˚ C to +38˚ C

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

T991A1715

0˚ F to 100˚ F

-18˚ C to +38˚ C

One 135 Ohm Output

N/S

Copper fast

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

response element

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T991A1756

55˚ F to 175˚ F

13˚ C to 79˚ C

One 135 Ohm Output

N/S

Copper fast

5 ft

1.5 m

3.5˚ F to 36˚ F

1.9˚ C to 20˚ C

N/S

response element

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T991A1764

0˚ F to 100˚ F

-18˚ C to +38˚ C

One 135 Ohm Output

N/S

Copper averaging

24 ft

7.3 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

element

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T991A2069

0˚ F to 100˚ F

-18˚ C to +38˚ C

One 135 Ohm Output

N/S

Copper fast

20 ft

6.1 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

response element

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T991A2127

0˚ F to 100˚ F

N/S

One 135 Ohm Output

N/S

Copper bulb

5 ft

1.5 m

3˚ F to 30˚ F

1.7˚ C to 16.7˚ C

N/S

 

 

 

 

 

 

 

 

 

 

 

6

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T775A2009 specifications

The Honeywell T775A2009 is a state-of-the-art digital controller designed for precise temperature regulation in commercial heating, ventilation, and air conditioning (HVAC) applications. This advanced device is programmed to provide reliable performance while ensuring energy efficiency, making it an essential component for modern climate control systems.

One of the standout features of the T775A2009 is its versatility in controlling various types of HVAC equipment. It is equipped with a universal input that accommodates multiple sensor types, including thermocouples, RTDs, and resistance temperature detectors. This allows for easy integration into existing systems, enabling users to harness its capabilities without extensive modifications.

The T775A2009 comes with an intuitive interface, featuring a large LCD display that provides clear visibility for monitoring and adjusting settings. The user-friendly navigation makes it accessible for both technicians and facility managers, simplifying the setup and maintenance processes. The device’s programmable capabilities allow users to set up customized control sequences and schedules to optimize system performance.

In terms of energy management, the Honeywell T775A2009 is fitted with advanced algorithms that support efficient operation. These algorithms facilitate demand-based control strategies, helping to reduce operational costs and environmental impact by minimizing energy consumption during low-demand periods. The controller also supports multiple modes of operation, including heating, cooling, and economizer modes, enhancing flexibility in managing climate conditions.

Another characteristic of the T775A2009 is its robust communication capabilities. It features Modbus RTU communication protocol, which allows seamless integration with building management systems (BMS). This connectivity enables centralized monitoring and control of HVAC equipment from a single interface, streamlining operational oversight.

The T775A2009 is built to withstand various environmental conditions and offers a high degree of reliability. It is designed for long-term operation, ensuring minimal downtime and maintenance costs. With its high-quality components and construction, the device is suitable for a wide range of commercial applications, from retail spaces to industrial facilities.

In summary, the Honeywell T775A2009 digital controller stands out for its versatility, advanced energy management capabilities, user-friendly design, and robust communication features. These attributes make it an ideal choice for HVAC systems aiming to enhance performance, reduce energy costs, and maintain optimal climate conditions efficiently.
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