Honeywell Chronotherm 4 Manual

T8611G Chronotherm
®
 IV Deluxe
Programmable Heat Pump Thermostat
PRODUCT DATA
® U.S. Registered Trademark
Copyright © 1997 Honeywell Inc.   •   All Rights Reserved
APPLICATION
The T8611G Chronotherm® IV Deluxe Programmable Heat
Pump Thermostat provides electronic control of 24 Vac
single-zone heat pump systems.
FEATURES
•Full seven-day program capability; different schedules
and temperature setpoints may be selected for
everyday to match the homeowner’s flexible schedule.
•Copy key makes programming...

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ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone...

T8611G CHRONOTHERM® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTAT
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Dimensions:
See Fig. 1.
Mounting Means:
The thermostat mounts on a wallplate. The wallplate mounts
horizontally on a wall or outlet box with two no. 6 x 32 screws
(included).
Accessories:
C7089B Outdoor Temperature Sensors (69-1020).
Universal Versaguard™ Thermostat  guards.
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do n
ot place your old
control in the trash.
Contact your...

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Fig. 2. Typical location of thermostat.
Wallplate Installation
The thermostat can be mounted horizontally on the wall or on
a 2 in. x 4 in. wiring box. Position wallplate horizontally on the
wall or on a 2 in. x 4 in. wiring box.
1.Position and level the wallplate (for appearance only).
The thermostat will function properly even when not
level.
2.Use a pencil to mark the mounting holes. See Fig. 3.
WIRES 
THROUGH WALLWALL...

T8611G CHRONOTHERM® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTAT
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Standard
Terminal
DesignationsAlternate
Terminal
Designations Typical Connection Function Terminal Type
B—Heating changeover valve Output 24V powered contact
CBa, C, X1, X2 Common Input
EKEmergency heat relay Output 24V powered contact
GFFan relay Output 24V powered contact
LA, A1, C, L, X, Z User defined Light Emitting Diodes (LEDs) Annunciation —
ORCooling changeover valve    Output 24V powered contact
O/B — Cooling or heating...

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Mounting Thermostat Wallplate
The thermostat mounts on the wallplate after they are
installed.
1.Engage tabs at the top of thermostat and wallplate. See
Fig. 5.
2.Press lower edge of case to latch.
NOTE: To remove the thermostat from the wall, first pull out
at the bottom of the thermostat; then remove the top.
SETTINGS
Using Thermostat Keys
The thermostat keys are used to:
•set current day and time,
•program times and setpoints...

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System and Fan Settings
The system default setting is Heat and the fan default setting
is Auto. Use the System and Fan keys or switches to change
the settings. See Fig. 8. The fan settings can be set for each
program period individually. The system selection is for all the
program periods.
System settings control the thermostat operation as follows:
Em Heat: Emergency heat output is controlled as Stage 1
heat. Cooling system is...

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IMPORTANT
Only configurable numbers are shown on the device. Example: If thermostat does not have a system key, Installer
Setup Number 12 will not be displayed. Review Table 6 factory settings and mark any desired changes in the Actual
Settings column. When Installer Setup is complete, review the settings to confirm that they match the system.
Table  6. Thermostat Installer Setup Options.
(continued)
Installer  
Setup
Number...

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Table  6. Thermostat Installer Setup Options (continued).
Installer  
Setup
Number
(Press Time  
▲ key toFactory-SettingOther Choices  
(Press ▲ or  ▼ key to change)
Actual
Selectchange)
Display Description Display DescriptionSetting
Deadband    30   3 Heating and cooling
setpoints can be set  
no closer than 3°F
(1.5°C)4 thru  
10Heating and cooling setpoints can
be set no closer than the chosen
value:
4—4°F (2°C)
5—5°F (2.5°C)...

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3.Press Time ▲
▲ or Time ▼
▼ until the current time is
displayed.
NOTE: Tapping the Set Current Day/Time will change
the time in one hour increments.
Fig. 11. Display of all the segments of the LCD.
M10314
Time Set ProgramSystem Fan Run
Program
Hold TempSet Current
Day/TimeWakeLeave
Return Sleep
Day
Time
Heat/Cool
Settings
Daylight
TimeCopy
AM
TueSet Day/Time
NOTE: If the current time is Daylight Savings Time,
press Daylight...