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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.
TRADELINE 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.