Honeywell T8775A, T8775C, T87K, T87N Catalog Page
Non-Programmable Thermostats
T8775A,C The Digital Round® Non-Programmable Thermostats
The Digital Round® Thermostats provide 24V control of heating only or heat/cool systems.
• Attractive styling complements any decor
• One-touch backlit display
• Familiar twist-to-see operation
• Available in Heat/Cool and Heat Only models
Dimensions, Approximate: 3 11/16 in. diameter x 1 7/16 in. deep (94 mm diameter x 37 mm deep)
Display Size: 0.75 sq in.
Operating Humidity Range (% RH): 5 to 90% RH (non-condensing)
Accuracy: ±1 F (±0.5 C)
Cycles per Hour: Adjustable 1, 3, 6, 9
Switch Type: Electronic
Cooling: 0.02A to 1.5A running; 6.0A inrush Heating: 0.02A to 1.5A running, 3.5A inrush Fan: 0.02A to 0.5A running, 2.5A inrush
Electrical Ratings: 18 to 30 Vac Frequency: 60 Hz
Power Method: Powered through system heating controls
Sensor Element: Thermistor
Color: Premier White®
Mounting: Round
Comments: Large easy-to-see backlit display
Includes: Wallplate, resistor assembly, mounting screws and wall anchors
Accessories:
50000066-001-Decorative Cover Plate for T8775 or T87K,N
Replacement Parts:
50034437-001-T8775 Resistor/Transorb Bag Assembly
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Switch Positions |
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Temperature Setting Range |
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Product Number |
Application |
System |
Fan |
Designations |
Stages |
(F) |
(C) |
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T8775A1009/U |
Heat Only |
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R, W |
1 Heat |
40 to 90 |
4.5 to 32 |
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T8775C1005/U |
1 Heat/1 Cool Conventional Systems |
HEAT-OFF- |
AUTO-ON |
R, Rc, W, Y, |
1 Heat/1 Cool |
40 to 90 in heat; |
4.5 to 32 in heat; |
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and Heat Pumps with No Auxiliary Heat |
COOL |
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G, O, B |
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45 to 99 in cool |
7 to 37 in cool |
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T87K,N The Round®
The Round® thermostats provide electronic control of 24Vac heating and cooling systems with the classic twist to set dial.
•Mercury Free
•Classic Styling
•Premier White®
•The T87K heat only works with 2 or 3 wire heat-only systems
Operating Humidity Range (% RH): 5 to 90% RH (non-condensing)
Accuracy: ±1 F (± 0.5 C)
Cycles per Hour: Adjustable 1, 3, 5, 9
Switch Type: Relay
Heating: 0.02 A to 1.0 A running
Electrical Ratings: 20 to 30 Vac Frequency: 50 Hz; 60 Hz
Power Method: Battery assisted power stealing
Sensor Element: Thermistor
Color: Premier White®
Mounting: Round
Accessories:
50000066-001-Decorative Cover Plate for T8775 or T87K,N 50010944-001-Range Stop Assembly
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Temperature |
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Terminal |
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Setting |
Dimensions, |
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Range |
Approximate |
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Designa- |
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Product Number |
Application |
System |
Fan |
tions |
Stages |
(F) |
(inch) |
(mm) |
Comments |
Includes |
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T87K1007/U |
Heat Only |
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R, W, Y |
1 Heat |
40 to 90 |
3 11/16 in. |
94 mm |
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diameter x 1 |
diameter x |
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3/4 in. deep |
45 mm deep |
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T87N1000/U |
1 Heat/1 Cool |
HEAT- |
AUTO- |
R, Rc, W, |
1 |
Heat/ |
40 to 90 |
3 11/16 in. |
94 mm |
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Conventional |
OFF- |
ON |
Y, G, O, B |
1 |
Cool |
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diameter x 1 |
diameter x |
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Systems and Heat |
COOL |
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3/4 in. deep |
45 mm deep |
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Pumps with No |
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Auxiliary Heat |
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T87N1026/U |
1 Heat/1 Cool |
HEAT- |
AUTO- |
R, Rc, W, |
1 |
Heat/ |
40 to 90 |
4 in. |
102 mm |
EASY-TO-SEE |
6 in. |
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Conventional |
OFF- |
ON |
Y, G, O, B |
1 |
Cool |
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diameter x 1 |
diameter x |
model with Large |
(152 mm) |
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Systems and Heat |
COOL |
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3/4 in. deep |
45 mm deep |
raised markings |
cover ring |
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Pumps with No |
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and a click at |
and switch |
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Auxiliary Heat |
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each 2 degree |
position |
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setpoint change |
labels |
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28 |
customer.honeywell.com |
70-6910 |
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