5 68-0076—1
T8611M
SELECTION/APPLICATION
Selection/Application
The T8611 Thermostat uses the latest microelectronic
design and control technology to provide home and build-
ing owners with the highest level of comfort available and
optimal energy savings in a package that is easy to use and
easy to live with.
The following section is a guide to selection and appli-
cation of the best thermostat to meet individual customer
needs.
PROGRAMMING
Does the thermostat selected accommodate the
customer’s daily schedule, lifestyle or work schedule?
Refer to choices below.
T RADELINE Daily Temperature
Device Programming Selection
T8611G,R* Weekday, 4 heat and
Sat, Sun. 4 cool
T8611M 7-day 4 heat and
(each day 4 cool
different)
*Specifications form 68-0057 for information.
IF NEW CONSTRUCTION APPLICATION,
CONSIDER
• equipment type (see manufacturer’s specifications)
— system switching required
— status indication provided
• control wiring—number of conductors required to
operate equipment and thermostat.
IMPORTANT: The T8611 requires a conductor to trans-
former common to provide continuous 24V power
for thermostat operation. This feature is commonly
specified and provided by equipment manufacturer.
IF RETROFIT/REPLACEMENT APPLICATION,
CONSIDER
• equipment requirements
— system switching (manual: EM. HT.-HEAT-OFF-
COOL, automatic: EM. HT.-HEAT-OFF-AUTO-
COOL).
— unique heat pump functions of emergency or
supplemental heat, changeover on heat or cool,
and status indication.
— Table 3 lists typical applications by manufac-
turer.
• existing wiring
— Are there enough conductors to operate the equip-
ment and the thermostat? Can a new cable be
pulled?
• existing thermostat
— Table 3 is a guide for replacing popular Honeywell
standard nonprogrammable thermostats with a
T8611.
SECURITY
Does the thermostat selected provide access to pro-
gramming and the override features that will best suit the
application? Refer to choices below.
Typical
Access Application Device
Free access to Home or T8611
programming owner-occupied
and adjustment/ commercial
override. building.
Restricted Public building. T8611 with TG512
access to Locking Cover;
device. T8611 with remote
temperature
sensing.