Honeywell Home THR860S User manual

User Manual
THR860S Two Channel
7 Day Programmer
50051987002 Rev.A

This product must be correctly installed and configured to work properly. If you are
not experienced in electrical wiring, we recommend professional installation to avoid
possible personal injury or equipment damage.
DISCONNECT ELECTRIC POWER BEFORE INSTALLATION: Can cause electrical shock
or equipment damage.
DISPOSAL AND RECYCLING: Waste electrical products should not be disposed of
with household waste. Please recycle where these facilities exist. Check with your local
authority or retailer for recycling advice.

3
About your new programmer
Features .................................................................4
Quick reference to controls..........................5
Date/time settings............................................6
Operation and programming
Operating modes...............................................7
Cost-saving programme schedules.........8
To adjust programme schedules...............9
Special functions
Temporary schedule overrides.................10
Extra Hour ..........................................................11
Holiday mode ...................................................12
Advanced features .........................................13
Installation and setup
System installation........................................14
Wall bracket installation .....................1516
System wiring ...........................................1720
Installer setup...........................................2125
Appendix
Alternate programme schedules............25
In case of difficulty ........................................26
Contents

User Manual
4
The THR860SWE is designed to work with your existing thermostat, heating and hot water. It can
work automatically, or you can adjust it manually to maintain a comfortable indoor environment while
minimising energy use and costs associated with heating both your home and the hot water you
require.
Features
•Energy-saving design: Automatically activates or shuts down your heating and hot water up
to six times per day to fit your lifestyle while saving energy costs. Each day of the week can be
programmed separately (see pages 812).
•One-touch comfort control: Allows you to override programmed settings at any time by turning your
heating or hot water on or off — or by extending an “on” period by up to three hours.
•Holiday button: Turns off your heating and hot water for up to 99 days while you are away, then
resumes normal operation when you return (see page 12).
•Seasonal clock change: Automatically adjusts the clock for seasonal changes in the spring and
autumn to adjust for standard time or daylight savings time.
•Lifetime memory: Saves your customised settings indefinitely, even if the mains power supply fails.
About your new 2 channel programmer

5
RUN
—+
—+
12:34
PM
mon tue wed thu fri sat sun
30/12/2010
cont
once
auto
off
cont
once
auto
off
on 1
off 1
on 2
off 2
on 3
off 3
Quick reference
Press to extend
hot water
heating (see
page 11)
Line of
text area
Current
time Current
day
Operating
modes (see
page 7)
Daily programme
periods (see page
8)
Press to override hot
water (see page 10)
Light is on when
hot water heater
is on
Press to
programme next
day (see page 9)
Press to copy a
daily programme
schedule (see page
9)
“Holiday” button
(see page 12)
Press to extend
heating time (see
page 11)
Press to override
heating programme
(see page 10)
Light is on when
heating system is on
Slider (set to RUN
except during
programming)
Mode
buttons (see
page 7)
Press to change
time
or advance in menus
Press to save changes and
advance to next step
Remove cover to
use controls

Operation and Programming
6
Date/time settings
To change the date or time, set the slider to DAY/TIME.
Use the +or -buttons to set the correct day, then press the OK
button. Follow the same procedure to set month, year and time.
Date and time are set at the factory and should not need to be
changed unless you turn off the automatic daylight savings
feature (see pages 2123).
RUN
TIP: While setting the time, press and hold the +/- buttons to
change the clock time more rapidly.
30
12
mon tue wed thu fri sat sun
SET THE DAY
SET THE MONTH
Set to DAY/TIME
Press +or -to change
Press OK to save
31
IS DAY OK?

7
Operating modes
Press the MODE button repeatedly to select an operating mode.
You can set the Hot Water and Heating modes separately, by
pressing the appropriate button as shown at left. Both work the
same way:
Cont: Heating or Hot Water remains on continuously.
Auto: In this mode the programmer follows a daily schedule for
the Hot Water or Heating, turning each on and off at preset times
during the day (see page 8).
Once: In this mode the Heating or Hot Water is turned on at the
first programmed “On” time of the day, and remains on until the
last programmed “Off” time (see page 8).
Off: Heating or Hot Water remains off at all times.
HOT WATER HEATING
12:34
PM
mon tue wed thu fri sat sun
30/12/2010
cont
once
auto
off
cont
once
auto
off
on 1
off 1
on 2
off 2
on 3
off 3
Press to
change
hot water
operating
mode
Press to
change
heating
operating
mode

Operation and Programming
8
Cost-saving programme schedules
MondayFriday ON 1 [off 1] ON 2 [off 2] ON 3 [off 3]
Heating 6:30am 8:30am 1:00pm 4:30pm
Hot water 6:30am 8:30am 1:00pm 4:30pm
SaturdaySunday ON 1 [off 1] ON 2 [off 2] ON 3 [off 3]
Heating 6:30am 9:30am 1:00pm 4:30pm
Hot water 6:30am 9:30am 1:00pm 4:30pm
The programmer is preset at the factory to turn off your home heating and hot water when they’re less
likely to be needed. The preset schedules are shown below. To change them, see pages 912. (See also
two alternate schedules on page 25).
To run this schedule (as shown below, or as you’ve modified it), leave the MODE buttons set to Auto.
Y ou can make temporary adjustments at any time (without changing the schedule) by pressing the
EXTRA HOUR or OVERRIDE buttons (see pages 1011).
Default
on/off times
(Schedule A)
TIP: To review your schedule quickly, move the slider to Hot Water or Heating, then press
the OK button repeatedly to see each on/off time period.
RUN

9
To adjust programme schedules
The Hot Water and Heating schedules must be programmed
independently, but the procedure is the same for both.
1 Move slider to HOT WATER or HEATINg, then press +or -to
adjust the “On” time for Period 1 as shown at left.
2 Press OK to save, then press +or -to adjust the “Off” time for
Period 1. Repeat for all time periods.
3 After all Monday time periods are set, press the NEXT DAY
button to adjust settings for Tuesday. Repeat for all other days.
To stop programming at any time, move slider to RUN.
SHORTCUT: While programming, press the COPY DAY button to
copy settings for the current day and apply them to other days. For
example, you can apply Monday settings to other days of the week.
After copying, press the NEXT DAY button to select a target day, then
press OK.
RUN
Set to HOT WATER
or HEATINg
6:30
AM
6:40
AM
8:30
AM
mon tue wed thu fri sat sun
mon tue wed thu fri sat sun
mon tue wed thu fri sat sun
SET ON-TIME 1
ON-TIME 1 OK?
SET OFF-TIME 1
on 1
off 1
on 2
off 2
on 3
off 3
Press +or -to change time
Press OK
TIP: To delete an unwanted time period, set identical times for the
“On” and “Off” periods.

Special Functions
10
Temporary schedule overrides
The OVERRIDE buttons work like a simple “on/off” switch. If you
press the button when the system is on, it will turn off. If off, it
will turn on. The Hot Water and Heating override buttons work
independently. Neither affects the other system.
These buttons work only when the MODE is set to Auto or Once
(see page 7).
This change is temporary. It does not change the daily
programme schedule, which will resume at the next programmed
“On” or “Off” time period.
NOTE: See also temporary overrides for extra hours or holidays (see
pages 1112).
Press to turn system on or off
Green light shows system
status (on or off)
12:34
PM
mon tue wed thu fri sat sun
SYSTEM OVERRIDE
cont
once
auto
off
cont
once
auto
off
on 1
off 1
on 2
off 2
on 3
off 3

11
Temporary schedule overrides — Extra Hour
The EXTRA HOUR buttons can extend the current “On” period
for 1 to 3 hours more. For example, if you expect guests you may
want heating or hot water on for longer than usual. You can also
use these buttons to switch on the system for a short period of
time.
Press EXTRA HOUR once or more to extend times. These buttons
work only when the MODE is set to Off, Auto or Once (see page
7).
This change is temporary. It does not change the daily
programme schedule, which will resume after the number of
hours you choose (1 to 3 hours).
NOTE: See also temporary overrides for holidays (see page 12).
Press to add extra hour(s)
12:34
PM
mon tue wed thu fri sat sun
+ i hour
cont
once
auto
off
cont
once
auto
off
on 1
off 1
on 2
off 2
on 3
off 3
Green light shows system
status (on or off)

Special Functions
12
Temporary schedule overrides — Holiday
The Holiday feature turns off your heating and hot water while
you are away for an extended time (up to 99 days). After the
designated time both systems resume normal operation.
1 With slider set to RUN, press the HOLIDAY button.
2 Press +or -to select the number of days you will be away (up
to 99 days), then press OK to save and exit. The display shows
the date you will return and counts down the number of
holiday days remaining.
To cancel the Holiday mode at any time, press HOLIDAY again.
12:34
PM
mon tue wed fri sat sun
SET HOLIDAY
cont
once
auto
off
cont
once
auto
off
on 1
off 1
on 2
off 2
on 3
off 3
7
6
SET DAYS AWAY
On HOLIDAY
Press +or -to change
Press OK to start timer
Screen displays days remaining
Set slider to RUN
RUN
Press HOLIDAY

13
• Preset programme schedules: The programmer is preset to follow the schedules shown on page 10
(Schedule A) unless you change the settings. However, instead of changing the settings manually,
you can choose either of 2 other pre-configured schedules. Schedule B keeps heating and hot water
on longer if you’re often at home. Schedule C keeps heating and hot water off longer to reduce
energy costs.
• Adjustable time settings: By default, the programmer has 6 time settings per day (3 on, 3 off). You
can reduce this to 4 time settings if desired (see page 23).
• Seasonal time change: The clock automatically changes in spring and autumn to correspond with
changes to and from daylight savings time (see page 22 to turn off this feature).
• Adjustable clock format: The screen can display time in either AM/PM format (i.e., 2 pm) or 24-hour
format (14:00) (see page 22).
• Adjustable backlight: A bright continuous backlight makes the display screen easier to read. You
can change its operation so the backlight always remains off or is lit for only a few seconds after
each button press (see page 22).
• MiniProgrammer option: This special operating mode is designed to compensate for the
inefficiency of some poorly controlled gravity hot water systems, which heat water whenever the
home heating system is on. The MiniProgrammer option blocks some operating modes (i.e., “Auto”
is not available in Heating, and “Off” is not available in Hot Water). (see page 23).
Advanced features

Installation and Setup
14
System installation
Heating/hot water systems
Installation procedure
1 Disconnect electrical power
2 Install programmer
3 Connect system wiring
4 Restore electrical power
5 Configure system operation
6 Test system operation
NOTE: If you are not experienced in equipment installation and electrical wiring, we
recommend that these procedures be done by a professional installer.
DISCONNECT ELECTRIC POWER BEFORE INSTALLATION: Can cause electrical shock or
equipment damage.
Boiler
Programmer
Room
Thermostat
System wiring
Cylinder
thermostat
Hot water
cylinder

15
Remove wall bracket and select location
Use a screwdriver to loosen screws and separate the
programmer from the wall bracket as shown at left.
Select a mounting location about 1.2 to 1.5 metres
from the floor where the display can be seen
clearly, in an area where the ambient temperature
is between 0 and 40º C. Install the wall bracket as
shown on page 16.
Wallplate

Installation and Setup
16
Mounting options
Use appropriate wood screws or anchor
screws to mount the wall bracket flush
against the wall. Use metal screws to mount
on an existing junction box.
Pull wiring through the wall bracket and
connect to screw terminals as shown on
page 17.
1Make sure electrical power is off.
2Install wall bracket as shown at left.
3Connect system wiring as shown then
replace programmer on wall bracket and
secure with screws.
Mount flush on wall
Mount on existing junction box
Breakout tabs accommodate
surface wiring if needed

17
Connect system wiring
Connect wiring from your heating and hot
water system to the programmer terminal
screws as shown at left. See wiring diagrams
on pages 1820.
1 Make sure electrical power is off.
2 Strip insulation to expose about 7 mm of
bare wire.
3 Use a screwdriver to loosen terminal
screws, insert wires beneath terminal
clamp, then tighten screws.
4 Replace programmer on wall bracket,
tighten securing screws, then restore
electrical power.
NOTE: Keep AC mains supply/load cables
separate from equipment wiring.
Terminal screws
Insert stripped wires beneath
terminal clamps, then tighten
screws
Terminal designations

Installation and Setup
18
Wiring diagrams
YPlan SPlan
Note 1: This is a Class II device (i.e., double insulated). A
parking terminal is available for earth wiring if required.
Note 2: In “Y,” “S” and “W” wiring plans, connections
are shown only for basic boilers. For connections to
pump over-run boilers, consult boiler manufacturer’s
instructions or contact Honeywell for assistance.
Note 3: Gravity circulation hot-water systems should be
fitted with a suitable hot-water control valve as shown in
Plan C on page 19. If this valve is not installed, configure
this device as a MiniProgrammer (see page 24).
Note 4: For convenience, wiring is shown with
connections made to a 10-way wiring strip in a junction
box.

19
Wiring diagrams
CPlan WPlan (wiring shown as a hot-water priority system)
Note 1: This is a Class II device (i.e., double insulated). A
parking terminal is available for earth wiring if required.
Note 2: In “Y,” “S” and “W” wiring plans, connections
are shown only for basic boilers. For connections to
pump over-run boilers, consult boiler manufacturer’s
instructions or contact Honeywell for assistance.
Note 3: Gravity circulation hot-water systems should be
fitted with a suitable hot-water control valve as shown in
Plan C above. If this valve is not installed, configure this
device as a MiniProgrammer.
Note 4: For convenience, wiring is shown with
connections made to a 10-way wiring strip in a junction
box.

Installation and Setup
20
To replace Honeywell programmers
THR860S (this programmer) N L 1 2 3 4
ST9400/ST6200/ST6300/
ST6400 N L 1 2 3 4
ST699/799 N L 7 4 6 3
ST7100 N L 7 4 8 5
ST7000A (see notes 12) L 2 3 4
To replace Honeywell programmer, remove the old unit and reconnect wiring to the new unit as shown
below. (Connect wires from old unit terminals to new terminals marked in grey.)
Note 1: If replacing a Honeywell ST7000A, a permanent mains power supply must be
provided for the new THR860S programmer.
Note 2: If replacing a Honeywell ST7000A, you must configure the new THR860S as a
“MiniProgrammer” (see page 23).