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Comfort Made Easy

Menu Driven Display 
1 Heat / 1 Cool

Complete Temperature and
Humidification / Dehumidification Control

We’ve combined humidity and temperature control in one
easy-to-install, easy-to-program package. This versatile thermostat
provides control over both humidification and dehumidification. Your
customers will enjoy the maximum comfort and energy savings, and
you will benefit from the time and effort saved by installing a single
device that does the work of two.

Our 9851i thermostat combines all the award winning features of our
9700i series thermostats with the convenience of humidity control.
When used in conjunction with our 9025i outdoor sensor, the 9851i
minimizes condensation and maintains optimal comfort. We’ve even
added a calibration feature to fine tune the thermostat to the
individual's unique environment.

The 9851i is compatible with most standard 24 Volt AC heat pump
systems, up to two stage heat and two stage cool. We took the guess
work out and put simplicity in. It’s programming made easy.

Bilingual Display Option

Set to your customer’s
unique lifestyle and language–
English or Spanish.

Integrated Humidity Sensing – 

Automatically adjusts indoor

humidity levels, prevents condensation and maintains desired
comfort level.

Auto Changeover –

Automatically adjusts between heating and 

cooling cycles to maintain optimal comfort.

Worry-Free Memory Storage –

Even during power outages, the 

thermostat maintains setpoint and programmed parameters.

Fully Programmable –

7 day, 5/2, 5/1/1 or 24 hour 

programming menus.

Adjustable Events Per Day –

2 or 4 events per day for greater 

control of your customer’s comfort.

Three Level Security –

Secure protection against unwanted 

changes to the programming menus, temperature or set-up functions.

Adjustable Temperature Differential –

Maintains optimal 

customer comfort.

Programmable Fan –

Energy cost savings. Allows user to set and 

provide continuous circulation for optimal comfort.

Intermittent Fan –

For minimum hourly fan circulation rates for optimal

filtration with minimal energy use.

Three Hold Settings  –

Permanent program override, a temporary 3 hour

override or a temporary override adjustable from 1 to 12 hours.

Technical service available:

1-800-445-8299

M-F 7:00 a.m. - 5:30 p.m. CST

Convenient Displays

View a full day of programming 
at once for quick review or 
easy adjustment.

Conversational Menus

Take programming step by 
step in plain, easy to 
understand language.

Homeowner Friendly

®

TM

DELUXE 

PROGRAMMABLE

THERMOSTAT

98

5

1

E

G

ELECTRIC

O

OIL

GAS

H

HEAT PUMP

24 VAC POWERED

Contractor ID Feature

Set your name and phone number
to remind customers when
service is needed.

Features and Benefits

PROGRAM
HEAT/COOL
HUMIDITY
DEHUMIDITY

Humidity

Control

Two Year Warranty

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