Robertshaw 9851i User Manual
Comfort made easy
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