Secure Meters SCD100-000 User guide

User Manual

BGX701-294-R02

Programmable thermostat display (PTD)

SCD100-000

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Copyright © 2020-2021, SIHPL. All rights reserved. E&OE.

Programmable thermostat display (PTD) SCD100-000 is a registered trade name of Secure Meters Ltd.

Other product names are trademarks or registered trademarks of their respective owners.

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Table of Contents

1 Important ......................................................................................................................................... 4

2 Know your PTD (Programmable Thermostat display) ................................................................ 5

2.1 Know your Home screen ............................................................................................................................... 5

2.2 Symbols you may see on the PTD ................................................................................................................ 5

2.3 Know the buttons and their functions ............................................................................................................ 6

2.4 Menu navigation- General instructions .......................................................................................................... 7

2.5 Activating the display backlit ......................................................................................................................... 8

3 Understanding the menus and their functions ........................................................................... 9

3.1 Change Zone menu ....................................................................................................................................... 9

3.1.1 Adjusting the zone temperature .................................................................................................... 10

3.2 Boost menu ................................................................................................................................................. 11

3.2.1 Applying Boost .............................................................................................................................. 12

3.3 Hold menu ................................................................................................................................................... 13

3.3.1 Applying Hold ................................................................................................................................ 13

3.4 Schedule menu ............................................................................................................................................ 14

3.4.1 Creating schedules ....................................................................................................................... 14

3.5 Summer mode ............................................................................................................................................. 18

3.5.1 Applying the summer mode .......................................................................................................... 18

3.6 Warning ....................................................................................................................................................... 19

3.6.1 Understanding Warning messages .............................................................................................. 19

3.7 Settings ........................................................................................................................................................ 20

3.8 Advance settings ......................................................................................................................................... 21

3.9 Installer settings ........................................................................................................................................... 21

3.10 PTD information ........................................................................................................................................... 22

3.11 Display Config ............................................................................................................................................. 22

4 System modes .............................................................................................................................. 23

5 Appendices ................................................................................................ ................................... 24

5.1 Adjusting the date and time settings ........................................................................................................... 24

5.2 Adding a temperature sensor ...................................................................................................................... 26

5.3 Replacing a temperature sensor ................................................................................................................. 28

5.4 Replacing Temperature humidity sensor (THS) batteries ........................................................................... 30

6 Notes ............................................................................................................................................. 31

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1 Important

1. No part of this manual or its contents may be published, distributed, scanned or copied, in electronic form or
otherwise, without prior written consent of Secure Meters Ltd.

2. While we have made every effort to minimise errors, some may exist. We request feedback from users in
this regard and undertake to correct such errors wherever possible.

3. Secure Meters Ltd. reserves the right to alter the features or specifications mentioned in this document
without prior notice.

4. Local best practice and regulatory stipulations must always be observed, even if they are not referred to
directly in this document. In addition, safety precautions recommended for installation of electrical
equipment should be strictly adhered to.

5. Observe local safety norms when disposing of the product (if applicable), and any batteries (if applicable), at
the end of their life, to ensure that they do not enter the household waste stream.

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2 Know your PTD (Programmable Thermostat display)

The Secure PTD is a battery operated, wireless device which enables independent control of your heating and
hot water. It can measure and control up to 4 zones (3 heating + 1 hot water or 4 heating). Designed for comfort
and convenience, it comes with an intuitive interface and powerful features such as single click Home-Away,
Boost, Scheduling, Optimum start/stop and Service interval etc. Programming it is easy and quick and you can
create separate schedules for each zone for a perfect heating experience. With a guaranteed 12 year battery
life, it is an ideal replacement for wired thermostats with limited functionality.

The main features of the PTD include:

 Real time status of your hot water and heating zones
 One-click Home-Away function with convenient mode settings
 Easy and intuitive 7 day programming for hot water and heating control with facility to copy and edit

schedules

 Ease of adding or replacing heating control devices
 Instant alerts about low battery in associated zone sensor, communication errors and service reminders
 Provision for boosting hot water or holding the desired temperature

2.1 Know your Home screen

Once your PTD is installed and commissioned, it displays the home screen. This is the central space from
where you can navigate to different menus (according to which the display changes). An illustration is provided
below:

2.2 Symbols you may see on the PTD

Indicates that your boiler is On

Indicates that Hot water is On

Indicates low battery

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The PTD is connected by a radio signal with the receiver. This icon indicates the communication
signal strength

Indicates a warning notification

Indicates that the button lock has been activated to avoid unintentional setting changes

2.3 Know the buttons and their functions

Button

Function

Rear button

Press

To wake up the device before initial setup.

Note:

The device is shipped in deep sleep mode to save battery.

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Menu/back button

This is a single press button with dual functions. Press it :

 To enter the main menu
 To return back to a previous menu from within a submenu/selection

Home-Away
button

This is a single press button with dual functions. Press it:

 To switch between modes (Home/Away)
 To enter a setting/option and to confirm a selection

+ button

Press

 To increase the target temperature, date and time
 To navigate between different menus/menu items in the forward direction

Long Press

Fast forward the selection of temperature, dates and time in forward direction

- button

Press

 To decrease the target temperature, date and time
 To navigate between different menus/menu items in the backward

direction

Long Press

Fast forward the selection of temperature, dates and time in the backward
direction

2.4 Menu navigation- General instructions

1. Press the Menu/back button at the top centre

 To enter the main menu
 To return back to a previous menu from within a submenu/selection

2. Press the Home-Away button at the bottom centre to

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 To switch between modes (Home/Away)
 To enter a setting/option and to confirm a selection

3. As required, press the plus or minus buttons, until the required menu, selection, temperature, date or

time appears

2.5 Activating the display backlit

The PTD display backlit will illuminate for 4-5 seconds whenever any button is pressed. If no further buttons are
pressed, it will automatically turn off in order to save battery life. To make the display backlit come on again,
press any button on the PTD.

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3 Understanding the menus and their functions

The PTD has various menus that allow you to control and monitor your heating in an efficient manner. Additional
sub menus are available within each menu that help you specify useful settings. The following menus are
available:

Menu

Task

Change Zone menu

Adjusting the zone temperature

Boost menu

Applying Boost

Hold menu

Applying Hold

Schedule menu

Creating schedules

Summer mode

Applying the summer mode

Warning

Understanding Warning messages

Settings

Settings (Viewing and applying)

Advance settings

Advance settings (Viewing and applying)

Installer settings

Installer settings (Viewing and applying)

Display Config

Display Config (Viewing and applying)

3.1 Change Zone menu

The Change Zone menu lets you:

 Switch between different zone views (if you have more than one)
 Temporarily adjust the target temperature of a zone to suit your current needs. The temporary override will

only last until the next scheduled set point is reached.

The default view is of the zone in which the PTD has been installed. You may need to change the view, if you
wish to apply various settings to other zones.

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3.1.1 Adjusting the zone temperature

To temporarily override a zone schedule, do the following:

If you have a single zone-combi boiler just use the +/- buttons to alter the target temperature
For multi zone systems, press the top menu button and navigate to the Change zone menu (This is

the default menu. If required press +/- until you reach the menu)

Note:

Some of the illustrations below may vary depending on the receiver you are controlling. Please note
that for a 2-channel receiver, the hot water is associated with zone 1, whereas for a 4-channel, it is
associated with zone 3.

The Select Zone screen appears

Press + or – until the required zone is displayed.
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Press +/- to adjust the zone temperature as required. The temperature will increase/decrease by

0.5 degrees at each press.

An example screen after temperature has been adjusted is shown below.

Note:

Override will be automatically cancelled at the beginning of the next scheduled period.

3.2 Boost menu

The Boost menu can be used to can turn on hot water for a fixed duration, irrespective of the hot water
scheduled state. This function will only be available if a hot water channel is associated with:

 Zone 1 on a Two- channel receiver
 Zone 3 on a Four-channel receiver

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3.2.1 Applying Boost

The steps to apply Boost are described below:

Press the top menu button and navigate to the Boost menu (if required press +/- until you reach the
menu)

Press + or – to select the Boost duration and then confirm. The following options are available.

 Boost for 1 hour
 Boost for 2 hours
 Cancel Boost (if Boost is already applied)
 Exit

An example screen with Boost applied is shown below.

Notes:

 Boost will be cancelled when Away mode is applied.
 When the boost duration finishes, your schedule will go back to its previous setting
 To cancel boost early, press the Cancel Boost option.

Boost

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3.3 Hold menu

You can activate the Hold function for holding the heating at a desired target temperature for a chosen time
duration. (1, 2, 3 or 4 hours or until hold is cancelled). You can also readjust the target temperature to a new
desired value even after hold is applied.

3.3.1 Applying Hold

To setup the Hold function, do the following:

Press the top menu button and navigate to the Hold menu (If required press +/- until you reach the
menu)

Press + or – to select the Hold duration and then confirm. The following options are available.

 Hold for 1 hour
 Hold for 2 hours
 Hold for 3 hours
 Hold for 4 hours
 Hold until Cancel (if Hold is already active)

An example screen with Hold applied is shown below.
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3.4 Schedule menu

Your PTD comes with a pre-set schedule for 6 time periods to suit most of your needs and save energy. (See
table below).

Weekday

Period 1

Period 2

Period 3

Period 4

Period 5

Period 6

Monday to
Friday

Time

6:00 AM

8:30 AM

11:30 AM

1:30 PM

5:00 PM

10:00 PM

Target
temperature

20°C

18°C

20°C

18°C

21°C

15°C

Saturday and
Sunday

Time

7:00 AM

10:00 AM

11:30 AM

1:30 PM

5:00 PM

11:00 PM

Target
Temperature

20°C

19°C

21°C

18°C

21°C

15°C

However, you can make alterations to in accordance with your preferences and personal comfort.
The PTD enables you to create independent schedules for

 Zone heating (Setting the target temperature)
 Hot water heating (Time based On/Off)
 Wired thermostats (Time based On/Off)

Using it you can create:

1. A weekly schedule

2. Separate schedule for weekdays and weekend

3. Independent schedules for each day of the week

3.4.1 Creating schedules

To create a schedule do the following:

Press the top menu button and navigate to the Schedule menu (If required press +/- until you
reach the menu) and then confirm.

Press + or – until the required zone is displayed for which to create the schedule and then confirm.
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Press + or – until the required day is displayed for which to create the schedule and then confirm.

Press + or – until the required period is displayed and then confirm.

Press + or – until the required time is displayed and then confirm.

Note:

Depending on the pre-configured time format (24 or 12 hrs.), you may have to select the
hour/minute/AM or PM.

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Notes:

 The minimum time interval that can be defined for a period is 10 minutes.
 The last period of the day will cover the remaining time of the day till the start time of next

day (first period).

Press + or – until the required Target temperature is displayed and then confirm.

Note:

Adjustments can be made in a steps of 0.5 resolution at each step.

Repeat the steps (4 to 6) for remaining periods (Or as necessary)

Once a day is programmed, this information can be copied and applied to the remaining (or
selected) days of the week.

Select Yes to copy the schedule.

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Press +/- to select required or all remaining days for which you want to copy the schdeule and then
confirm.

If required, you can continue copying the schedule for other days (Repeat day selection with +/­buttons as necessary)

Note:

After the copy cycle is completed, the Editing cycle is initiated. If required, you can continue editing
the schedule. (Repeat day selection with +/- buttons as necessary)

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Overriding a schedule

1. If you perform a Boost operation, the running schedule will be overridden for the duration until Boost

persists.

2. If you modify the temperature setpoint while a schedule is running, the modified change will persist only

till the end of the running schedule period. At the start of the next period, the settings will switch as
scheduled.

3. If the Hold feature is applied, all schedule settings will be either on hold for the duration specified or

permanently stopped until hold is cancelled.

3.5 Summer mode

Switch to this mode if you want your heating to come on only when the temperature drops below the pre-set
frost protection temperature. (Default is 5 degrees but it can be changed under Settings). This can help protect
against damage to the heating system caused by extreme low temperatures. Hot water will run as per schedule
in summer mode, wired device timer will remain in off state.

3.5.1 Applying the summer mode

To apply summer mode, do the following:

Press the top menu button and navigate to the Summer mode menu (If required press +/- until you
reach the menu)

Select the ENABLE SUMM MODE option and then confirm.

Note:

The DISABL SUMM MODE option will appear if Summer mode is already applied.

An example screen with Summer mode applied is shown below.
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3.6 Warning

Warnings are important notifications that need your attention. These appear on the homepage accompanied by
a blinking symbol. Details of a certain warning can be checked under the Warning menu. The description of

some warning messages is tabulated below:

3.6.1 Understanding Warning messages

Warning

Description

SERVICE DUE

Indicates that the PTD service is due.

Note:

If the device is not serviced in time, you may not be able to control
your heating or only partial control will be available, depending on the
settings configured by your installer.

LOW BATTERY

Indicates that the battery of the main PTD is low and the unit will
need replacing.

LOW BATTERY- Z (X)

Indicates that the battery of the zone PTD or THS is low.

Notes:

1. Battery replace procedure is provided under section:
Replacing Temperature humidity sensor (THS) batteries

2. If the PTD battery is low, the unit will need replacing.

COMMS ERROR

Indicates that the main PTD is unable to establish communication
with the receiver.

COMMS ERROR- Z(X)

Indicates that the heating control device in a particular zone is unable
to establish communication with the receiver.

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3.7 Settings

This section only describes the different settings. The process to navigate to the Settings menu and apply a
setting is the same as described for other menus. The same general button instructions apply as discussed
under section Menu navigation- General instructions

Set/modify in PTD

What?

Thermostat/System behaviour

Modify pre-set value for
Away temperature

The default setpoint is 11 degree
centigrade and can be modified as
desired.

The PTD controls the heating to operate
on the set temperature, when the room is
unoccupied.

Frost protection

The default setpoint is 5 degree
centigrade and can be modified as
desired.

These settings ensure that your heating
will come on only if your temperature
drops below the configured setpoint.

Heat mode

Economy or Comfort (default)

These settings ensure that you are always
comfortable at all times and energy usage
is optimised in the best possible way.

Optimum Start

Enable or disable

The PTD analyses the temperature rise
and fall pattern and determines how long it
will take for your zone to heat up to the
target temperature. Accordingly it turns
the heating on a bit earlier to achieve that
temperature at the scheduled time.

Optimum Stop

Enable or disable

The PTD analyses the temperature rise
and fall pattern and accordingly turns the
heating off a bit earlier than the scheduled
time, although ensuring that a comfortable
temperature is always maintained. This
effect may not be noticeable but is a great
measure to save energy and bring down
your fuel expenses.

Edit
Date/Time

Edit date

Set the current date by making
adjustments to the date –

Year/Month/Day

Refer section Adjusting the date
and time settings for details

The PTD will function according to the set
date

Set time
format

Set the time format. You have the
option for 12 or 24 hour clock
setting. Refer section Adjusting the
date and time settings for details

The PTD will function according to set time

Add sensors

This option enables you to attach a
new external temperature sensor
with a zone in the heating system.

Refer section
Adding a temperature sensor

The sensor is added to the system

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Add wired device

This option enables you to attach a
wired device with a zone in the
heating system.

The wired device is added to the system

3.8 Advance settings

This section describes how to use advanced settings. The process to navigate to the Advance settings menu
and apply a setting is the same as described for other menus. The same general button instructions apply as
discussed under section Menu navigation- General instructions

To access the options grouped under this menu, you require the User or Owner PIN. By default the PIN is set to

1854. To change it according to your preference, use the Change PIN option. If you lose your PIN, contact the
support team at [e-mail]

Limit user control

Set/modify in PTD

What?

PTD system behaviour

Limited
temperature range

The selection of minimum (Set lower limit)
and maximum (Set upper limit)
temperature range.

The default values are 5 degrees (Min)
and 30 degrees (Max) centigrade.

Once set, the heating operates within the
configured temperature range only.

Local control

Enable or disable

If disabled, you will not be able to adjust
the target temperature of any zone.

Set fuel type

Set/modify in PTD

What?

PTD system behaviour

Fuel type

The available options you can choose
from include: Gas, Electricity (ELEC),
and Oil

The Receiver takes action on the boiler
(On/Off) based on the fuel type selected in
the PTD.

Factory reset – Reset the device back to factory settings.

Reset system

All user settings/configurations in the
receiver, PTD and associated devices are
removed.

System components reset to default
settings.

Reset PTD

User settings and configuration is
removed from PTD device

Product resets to default settings

Change PIN

Let’s you change PIN according to

preference

Advance settings can be accessed
through new PIN.

3.9 Installer settings

This section describes how to use installer settings. The process to navigate to the Installer settings menu and
apply a setting is the same as described for other menus. The same general button instructions apply as
discussed under section Menu navigation- General instructions

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To access the options grouped under this menu, you require the Installer PIN. Once received, you can change it
according to your preference, using the Change PIN option. If you lose your PIN, contact the support team at

[e-mail]

Set/modify in PTD

What?

PTD system behaviour

Service interval

This setting enables installers to set the service interval
timer on the PTD as a reminder for when the boiler needs
servicing. This is critical for gas safety reasons and to be
complaint with yearly service regulations.

The default service due days is set at 365 days. You
can set an interval between 30 to 465 days prior to
service due date. The default Warning interval is set at
30 days. You can set the warning interval alert between
30 to 100 days prior to service due date.

As configured, the PTD
will remind you with a
warning alert when service
is due.

Important note:

All other options under installer settings are the same as under Advance settings.

3.10 PTD information

The following information can be viewed in this menu.

 PTD MAC address
 PTD serial number
 PTD firmware version
 Receiver MAC address

3.11 Display Config

The following display settings can be applied to the PTD:

Time only

Only current time of each zone will be displayed on the home screen.

Humidity
only

Only humidity percentage of each zone will be displayed on the home screen.

Time +
humidity

Both time and humidity values of each zone will be displayed on the home screen.

None

Neither time nor humidity values will be displayed on the home screen.

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4 System modes

Your PTD has 3 different heating modes: Home, Away and Summer

Mode

Description

Switching/Setting

Home

This is the default mode in which
the PTD follows the heating, hot
water and timer schedules applied
by the user. In this mode, the
temperature set point and boost
settings can be changed locally on
the PTD as well as through the
mobile app.

Press the Home-Away button to
toggle between the two modes.

Away

This is the mode to use, when you
are moving out of your home. In
this mode, the PTD will maintain a
fixed pre-set temperature.
Heating, timer and hot water
(including boost) schedules will
not work in Away mode, until
cancelled.

Summer

Switch to this mode if you wish to
restrict heating control in all
defined zones to frost protection
mode. In this mode, all heating
and timer schedules will stop
however, hot water will continue to
work (including boost
functionality). You cannot change
heating and timer settings on the
PTD or mobile app but hot water
and boost settings can be
modified.

Refer section Applying the
summer mode to set the device in
Summer mode.

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5 Appendices

5.1 Adjusting the date and time settings

The process to edit the date and time settings is described below.

Press the top menu button and navigate to the Settings menu (If required press +/- until you reach
the menu)

Press the +/- buttons until you reach the Edit Date/Time submenu and then confirm.

The Edit Date screen appears with the day flashing. Press +/- to adjust the day and then confirm.
(Long press the +/- buttons to advance the day more quickly.)

Next the month starts flashing. Press +/- to adjust the month and then confirm. (Long press the +/­buttons to advance the day more quickly.)

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Next the year starts flashing. Press +/- to adjust the year and then confirm.

Next set the required time format and confirm. The following options are available

 24 hour format
 12 hour format

Based on the chosen format, the Edit time screen will appear. The below example is for 24 hours
format. Press +/- to adjust the time in hours and minutes and then confirm. (Long press the +/­buttons to advance the time more quickly.)

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5.2 Adding a temperature sensor

The process to add a sensor is described below.

Press the top menu button and navigate to the Settings menu (If required press +/- until you reach
the menu).

Press the +/- buttons until you reach the Add sensor submenu and then confirm.

Select the required zone and then confirm.

Follow instructions and then confirm.
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Confrim the serial number of the sensor to be added.

The sensor is paired.
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5.3 Replacing a temperature sensor

The process to replace a sensor is described below.

Press the top menu button and navigate to the Settings menu (If required press +/- until you reach
the menu)

Press the +/- buttons until you reach the Add sensor submenu and then confirm.

Press +/- to select the required zone whose sensor you want to replace and then confirm.

Confirm to proceed.
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Follow instructions and then confirm.

Confrim the serial number of the sensor to be replaced.

The new sensor is paired.
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5.4 Replacing Temperature humidity sensor (THS) batteries

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6 Notes

BGX701- 294

Secure Meters (UK) Ltd

Secure House, Lulworth Close,

Chandler's Ford,

Eastleigh, SO53 3TL,

United Kingdom
t: [phone]
f: [phone]

UK Free Phone : [phone]

UK Direct : [phone]

Copyright © 2020, SIHPL