Honeywell Sundial RF Pack 5 Wireless Enabled 2 Zone Programmer and Thermostats User Manual

User Guide
Y9520Z Sundial RF2 Pack 5
How to use:
  ST9520C Wireless Enabled 2 zone Programmer
  DT92E Wireless Room Thermostats
  BDR91T Wireless Enabled Relay Box (if installed) System Components
Energy Efficiency and the Environment
Home energy use is responsible for more than ¼ of the total UK carbon emissions 
which contribute to climate change. Heating and hot water systems based on 
boilers account for 
 of this figure, so it is important to understand how your 
controls can help to maximize energy...

ZONE 1ZONE 2
EXTRA HOUR
OVERRIDE EXTRA HOUR
OVERRIDE
NEXT
D AY
COPY
D AY
HOLIDAY
OK
NEXT DAY/TIME
ZONE 1
ZONE 2 RUN
Zone 1 ‘ON’ period indicator
Time Display
LoT™ Technology Display
Programme Time Markers
Day of Week Indicator
RF Symbol
Zone 2 ‘ON’ period indicator
Zone 2 Extra Hour Button
Zone 2 Indicator Lamp
Zone 2 Override Button
Boiler Status Indicator
Slider
ECO Mode Active
Frost Protect Indicator
ECO Countdown Indicator
Heating Demand Indicator
Setpoint Change Buttons
ECO Button
OFF/Standby...

3
Contents
CONTROL OF YOUR SYSTEM
 General Description of Controls in Your System ................................................... 4
  The way to use a Programmer ........................................................................\
...... 4
  The way to use a Room Thermostat / Control of Your Boiler / Optimisation  .........5
GETTING STARTED WITH YOUR ST9520C
  Step 1: Setting the Date & Time ........................................................................\
.... 6
  Step 2: Running a...

4
General Description of Controls in Your System
Your Honeywell ST9520C provides timing control for both zones in your central 
heating system, letting you set ON and OFF periods to suit your own lifestyle. 
The ST9520C does not directly control the temperature but works together with other 
temperature controls, such as room thermostats to control your heating system in 
your home.
With 7-day programming and up to 3 on/off periods per day, every day can be set 
differently, and both heating zones can be...

5
A typical use of the EXTRA HOUR button would be if you returned to the house for 
a short period when the heating was off. Pressing the appropriate EXTRA HOUR 
button gives you 1, 2, or 3 hours of heating, exactly when you need it. \
Another typical 
use is when the heating is already on and you want it to stay on a little longer - just 
press  EXTRA HOUR and, for that day only, an hour will be added to the end of the 
time at which heating normally goes off.
The  MODE buttons allow you to select how...

6
Your ST9520C should have been set up to work correctly when it was installed. 
However, the following will show you how you can modify your settings to meet 
your particular lifestyle.
To assist you with programming and everyday use your ST9520C will display text 
messages at every stage to help you get the most out of your central heating system. 
The ST9520C uses LoT™ Technology to constantly update the display to give you 
feedback about what is required.
Step 1: Setting the Date & Time
Your ST9520C...

7
GETTING STARTED WITH YOUR ST9520C
b. To change the day of the month, press the   or  buttons until the correct 
day is shown.  Each press of the button will change the date by one day. As soon 
as a change has been made, the message ‘IS DAY OK?’ will be displayed. Once 
the correct day is reached, press the green 
 button to confirm, and move to 
the next step. If you do not need to make a change, just press the  button 
immediately and this will move you to the next step.
c.  The month digits will now...

8
PROGRAMMING YOUR  ST9520C
The Built-in Programmes
The built-in programmes give you a starting point that you can personalise to your own 
requirements. Your Installer should have selected one and ticked the box alongside it. \
If there 
is no tick, the product normally leaves the factory with Profile A installed, but it is a simple 
matter to select one of the other profiles (see Changing the Installer Parameters, page 15).
 Built-in Programme (Profile A)ON 1OFF 1 ON 2OFF 2 ON 3OFF 3
Monday to 
Friday...

9
PROGRAMMING YOUR  ST9520C
Reviewing the Programme Times
To review your zone 1 programme, move the slider to the ZONE 1 position. 
To review your zone 2 programme, move the slider to the ZONE 2 position.
To review the programme times, press the 
 button repeatedly. The appropriate 
ON and OFF markers will be displayed to show you which time is being reviewed. 
Any of these times can be adjusted by using the 
  or  buttons, and then 
confirmed using the  button. Remember to return the slider to the RUN...

10
Note: When pressing the  button the next ON or OFF marker may start to flash. 
This indicates you have tried to set a time equal to one of the next programme times 
already in the memory.  Similarly, when pressing the 
 button the previous ON or 
OFF marker may start to flash. This indicates you have tried to set a time equal to 
one of the previous programme times. If this happens the ST9520C simply moves 
both times together as long as you continue to press the 
  or  buttons.  Follow 
the procedure...