Honeywell T921 Catalog Page
Proportional Thermostats
T921 Proportional Thermostats
|
|
|
|
|
|
|
|
|
Proportional Thermostats provide low voltage, 3-wire control for |
|||||
|
|
|
|
|
|
|
|
|
valve motors, damper motors, and balancing relays in heating or |
|||||
|
|
|
|
|
|
|
|
|
cooling system applications. |
|
|
|||
|
|
|
|
|
|
|
|
|
• Bellows element adjusts potentiometer slider to regulate motor operation |
|||||
|
|
|
|
|
|
|
|
|
• Removable setting knob prevents unauthorized tampering with setpoint |
|||||
|
|
|
|
|
|
|
|
|
Dimensions, Approximate: 5 11/16 in. high x 3 3/8 in. wide x 2 1/4 in. |
|||||
|
|
|
|
|
|
|
|
|
deep (144 mm high x 86 mm wide x 58 mm deep) |
|||||
|
|
|
|
|
|
|
|
|
Mounting: Wall mount |
|
|
|||
|
|
|
|
|
|
|
|
|
Throttling Range: 2.5 F (1.4 C) |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Setpoint Temperature Range |
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Product Number |
(F) |
|
(C) |
|
Output Signal |
|
Includes |
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
T921A1183/U |
|
— |
|
13 C to 29 C |
135 Ohm potentiometer |
|
Celsius model |
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
* |
T921A1191/U |
|
56 F to 84 F |
|
— |
|
135 Ohm potentiometer |
|
* model which includes slotted sides and an add-on faceplate |
|||||
|
|
|
|
|
|
|
|
|
|
|
to allow thermostat to be mounted horizontally |
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
T921G1005/U |
|
56 F to 84 F |
|
— |
|
135 Ohm potentiometer |
|
— |
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
* TRADELINE models • SUPER TRADELINE models |
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
||
Proportional Thermostat Parts and Accessories |
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
||
Product Number |
Description |
|
|
|
|
|
|
|
|
|
Used With |
|||
|
|
|
|
|
|
|
|
|
|
|||||
100653A/U |
Potentiometer Assembly for use with T921 |
|
|
|
|
|
T921 |
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
||
130224/U |
Knob - Adjusting |
|
|
|
|
|
|
|
|
|
— |
|||
|
|
|
|
|
|
|
|
|
|
|
||||
4074BKB/U |
Envelope assembly for T921 |
|
|
|
|
|
|
|
— |
|||||
|
|
|
|
|
|
|
|
|
|
|||||
50014156-002/U |
Remote room sensor for the ZonePRO® |
|
|
|
|
|
ZonePRO |
|||||||
|
|
|
|
|
|
|
|
|
|
|||||
50014157-001/U |
Duct temperature sensor for the ZonePRO® |
|
|
|
|
|
ZonePRO |
|||||||
|
|
|
|
|
|
|
|
|||||||
ZonePRO® Modulating/Floating Control Thermostats |
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
The ZonePRO® thermostats are for low-voltage pressure- |
|||||
|
|
|
|
|
|
|
|
|
dependent variable air volume (VAV) applications. ZonePRO can |
|||||
|
|
|
|
|
|
|
|
|
also be used for hydronic perimeter heating/cooling and bypass |
|||||
|
|
|
|
|
|
|
|
|
box with or without reheat. The four models cover modulating |
|||||
|
|
|
|
|
|
|
|
|
applications, floating applications and applications that require |
|||||
|
|
|
|
|
|
|
|
|
up to two additional outputs for reheat. |
|||||
|
|
|
|
|
|
|
|
|
• Provides modulating (2 to 10 Vdc analog) control (TB7980) |
|||||
|
|
|
|
|
|
|
|
|
• Provides floating control (TB6980) |
|
|
|||
|
|
|
|
|
|
|
|
|
• Provides 2 additional outputs (TB6980B and TB7980B) |
|||||
|
|
|
|
|
|
|
|
|
• Provides max. and min. setpoints for heating and cooling |
|||||
|
|
|
|
|
|
|
|
|
• Provides a night setback (NSB) terminal for energy savings |
|||||
Dimensions, Approximate: 2 5/8 in. wide X 4 9/16 in. high X 1 in. deep Power Supply: 24 Vac |
|
|
||||||||||||
(69 mm wide X 118 mm high X 27 mm deep) |
|
|
Frequency: 60 Hz |
|
|
|||||||||
Mounting: Wall mount |
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
Setpoint Temperature Range |
|
|
Output Signal |
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|||
Product Number |
(F) |
|
(C) |
Output Signal |
Burden |
|
Additional Outputs |
Description |
||||||
|
|
|
|
|
|
|
|
|||||||
TB6980A1007/U |
50F to 95F |
|
10C to 35C |
Floating |
0.5A max @ 24Vac |
— |
Floating control |
|||||||
|
|
|
|
|
|
|
|
|||||||
TB6980B1006/U |
50F to 95F |
|
10C to 35C |
Floating |
0.5A max @ 24Vac |
1 Analog/TRIAC1 TRIAC |
Floating control with 2 additional outputs |
|||||||
|
|
|
|
|
|
|
|
|
||||||
TB7980A1006/U |
50F to 95F |
|
10C to 35C |
0-10 Vdc or 2-10 Vdc |
0-10V, 10k min |
|
— |
Modulating (0-10Vdc) control |
||||||
|
|
|
|
|
|
|
|
|||||||
TB7980B1005/U |
50F to 95F |
|
10C to 35C |
0-10 Vdc or 2-10 Vdc |
0.5A max @ 24Vac |
1 Analog/TRIAC1 TRIAC |
Modulating (0-10Vdc) control with 2 |
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
additional outputs |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
500 |
customer.honeywell.com |
70-6910 |
Loading...