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T855SH

www.pro1iaq.com1-800-PRO1-559 (776-1559)

LIGHT COMMERCIAL/RESIDENTIAL WIRED REMOTE

SENSING THERMOSTAT WITH HUMIDITY CONTROL

T855SH

Rev. 1912

• Advanced pre-occupancy purge and IAQ

fan control

• Set dual-fuel balance point with outdoor

temperature sensor (R250S)

• Remote sensor compatable (R251S) for moving

sensing location or temperature averaging

• Humidity and dehumidity control

• Two and four occupancy/unoccupancy time

periods available

• Partial and full keypad lockout

• Large display

• Adjustable setpoint limits

• Ventialtion and economizer control

Stages of heat

Stages of cool

Heat pump with

Auxiliary

Compatible with

Conventional systems

Display size

(square inches)

Auto changeover

Room temperature

calibration

Filter change reminder

Adjustable temperature

swing

Programmable fan

Adjustable

setpoint limits

Memory type

(permanent)

Touchscreen

Warranty

(Years)

Remote capable sensor

Rh, Rc, C, Y, Y2, W/E, W2, G, B, O, S1, S2, H, D

5/1/1 Programmable

Non-Programmable

7 Day Programmable

3 8 5

Terminals

Wired accessories available for T855SH. R251S is an indoor remote temperature sensor. R250S is an outdoor remote temperature sensor.

* 2 heat stages for conventional heat

Outdoor temperature

sensor compatible

Commercial 2/4 Time Periods

(Occupied/Unoccupied)

Humidity Control

Summary of content (2 pages)

PAGE 1
LIGHT COMMERCIAL/RESIDENTIAL WIRED REMOTE SENSING THERMOSTAT WITH HUMIDITY CONTROL T855SH • Two and four occupancy/unoccupancy time periods available • Advanced pre-occupancy purge and IAQ fan control • Partial and full keypad lockout • Set dual-fuel balance point with outdoor temperature sensor (R250S) • Large display • Ventialtion and economizer control • Humidity and dehumidity control T855SH of es es Sta g Non-Programmable Sta g 5/1/1 Programmable of h ea t Commercial 2/4 Time Periods
PAGE 2
Remote Sensing Options for the T855SH Thermostat The T855SH can be configured in one of three ways with wired remote sensors to achieve maximum comfort in a space. These accessories are just another way PRO1 has improved comfort and efficiency at a low cost to home and building owners. Outdoor Remote Sensing The R250S can also be used as an outdoor temperature sensor to set a dual-fuel balance point. This feature chooses the most efficient heat source based on the outside temperature.