LightwaveRF JSJSLW921 User manual

Professional Series
Home Thermostat
Model No. JSJSLW921
Instruction Manual
www.lightwaverf.house Version 2

EC DECLARATION OF CONFORMITY
Responsible Authority:
LightwaveRF PLC,
Innovation Campus Birmingham
Faraday Wharf
Holt Street
Birmingham
B7 4BB
Tel: +44 (0)121 250 3625
Model Number(s): JSJSLW921
Description: Home Thermostat
Directives this equipment
Complies with: 2006/95/EC The Low Voltage Directive N/A
2004/108/EEC The Electromagnetic Compatibility Directive
1999/5/EC R&TTE Directive
93/68/EEC CE Marking Directive
Standards Applied in order to verify compliance
Safety: BS EN 60730-1: 2011
Health:
R&TTE: EN 301 489-1 V1.9.2: (2011-09), EN 301 489-3 V1.4.1: (2002-08)
EN 300 220-1 V2.1.1: 2006, EN 300 220-2 V2.1.2: 2007
EMC: EN 301 489-1 V1.9.2: (2011-09), EN 301 489-3 V1.4.1: (2002-08),
EN 55022: 2010, EN 61000-3-2: 2006 +A1: 2009 +A2: 2009 Class A,
EN 61000-3-3: 2008, EN61000-4-2: 2009,
EN 61000-4-3: 2006 +A1: 2008 +A2: 2010, EN 61000-4-4: 2012,
EN 61000-4-5: 2006, EN 61000-4-6: 2009, EN 61000-4-11: 2004
For and on behalf of LightwaveRF PLC
----------------------------------------
Name J Shermer
Position Managing Director

Get Started
What do I need?
How do I get started?
The following setup guide will explain how to link
the Home Thermostat to other LightwaveRF
heating devices. It is recommended to use the
Thermostat in conjunction with the Lightwave
Link & Web App.
The Home Thermostat does not need any tools
or expertise to be installed. It is completely
wireless and can be positioned anywhere in the
home. It also comes with a backplate that can be
screw mounted or stuck to the wall.
Help video & further guidance
For additional guidance, and to watch a video
that will help guide you through the installation
process, please visit the support section on
www.lightwaverf.house

IMPORTANT: Please retain these instructions for guidance on how to link
other LightwaveRF Heating devices to the Home Thermostat. For App
setup and additional guidance please visit www.lightwaverf.house
Current
mode
Boost button
Current
temperature
Overview
Installation
Standby button
Program
modes
Up / down / OK
buttons
Select
mode
View target
temperature
Link button
Current Day
Schedule
Current Time

The Home Thermostat requires 2 x AA
batteries for operation. The battery
compartment can be accessed by
removing the backplate. To do this, the
two screws at bottom of the
Thermostat need to be loosened. The
backplate can be gently pulled away
from the Thermostat body and slid
downwards until it comes free from
the hooks at the top of the device.
The backplate is designed to be wall
mounted. This can be achieved by
inserting suitable screws through the
two mounting holes, or by using
adhesive pads (not included).
Installation
Inserting / Changing the Batteries
Backplate
Mounting holes
Battery compartment
Wall Mounting

Quick Start Guide
Device Setup
The Home Thermostat is used to control and schedule home heating. It
wirelessly links to LightwaveRF Boiler Switch which turns on and o your Boiler.
If the Thermostat is also linked to the Lightwave Link, you can also control and
schedule your heating via the LightwaveRF App. This section will show you how
to setup the basic functions of the Home Thermostat including setting the
target temperature, modes, and creating a schedule. The following section will
show you how to link the Thermostat to other LightwaveRF Heating devices,
such as the Boiler Switch, to integrate it into your heating system.
Basic Operation
Lightwave Link Home Thermostat Boiler Switch

The default mode of operation of the Home Thermostat is referred to as
‘Running Mode’. This is denoted by the symbol of the running man on the
main display. When in Running Mode, the Thermostat implements the
pre-set heating schedule and maintains pre-set ‘on’ and ‘setback’
temperatures during the relevant set time periods (see programming
section for information on how to set this).
If the heating is on, pressing the Standby button overrides the schedule and
turns o the heating until the next ‘on period’. If the heating is o, pressing
the Standby button will turn the heating on until the next ‘o period’. When
toggling Standby, the new target temperature is briefly displayed on the
screen in place of the current temperature. If the thermostat requires the
heating to be turned on to achieve its new target temperature, a flame
symbol will be displayed to indicate that it has sent a command to the
LightwaveRF Boiler Switch to turn on the Boiler.
Holding the Standby button for a couple of seconds activates ‘Away mode’. Away
mode also reverts to a pre-set setback temperature (see setting modes); however,
rather than returning to the schedule at the next on/o period, the mode will
continue to remain active until it is manually cancelled by pressing the Standby
button. These functions can also be carried out on the LightwaveRF App.
Device Setup
The Standby button

Device Setup
The Boost function
Pressing the Boost button sets a temporary target temperature 1.5 degrees
above the current temperature for the duration of 1 hour. If there is a target
temperature higher than the current temperature already set, pressing the
boost button will match this temperature.
Pressing the button twice boosts the temperature for 2 hours, three times 4
hours, four times 8 hours, and the fifth press will cancel the boost function. An
active boost function is denoted by a sun symbol on the display. It can be
cancelled at any time by pressing the standby button (press twice to return
to normal running mode).
Setting a target temperature
The arrow shaped buttons on the Thermostat allow you to manually change
the current target temperature. Tap the up or down buttons to move the
temperature in 0.5 degree increments. The new target temperature will
remain active until standby mode is activated, the mode button is pressed to
change modes, or the next ‘heating cycle’ in the running schedule is initiated
(explained in next section). These actions will revert the target temperature
to the current existing pre-sets. Pressing the ‘Display’ button allows you to
view the current target temperature.

Device Setup
Modes
Pressing the Mode button toggles between the four Thermostat modes. Each
mode contains pre-set programmable target temperatures. When a mode is
selected, the Thermostat will be set to these target temperatures until the
mode is changed.
Running mode
The main Thermostat mode is ‘Running’. Unlike the other modes which can
only store temperatures, Running mode also allows you to create a weekly
heating schedule which can change the target temperature up to 8 times per
day. When the home is occupied, this mode should be constantly running.
Away & Holiday modes
Away and Holiday modes allow you to specify a temperature that you want
to set the heating to whilst you are away. Holiday mode also allows you to
specify the number of days that you want this to be active for.
Frost mode
This mode should be activated when the home is unoccupied for long
periods. It prevents pipes from freezing by setting a minimum temperature.

Programming Running mode
Device Setup
1. Press the ‘Program’ button and then press the ‘OK’ button when option ‘1’
appears on the display.
2. The next option screen allows you to choose which days of the week to
schedule. You can set all week days to be the same, setup week then
weekend days, or each day individually. Select the appropriate option by
using the Arrow keys to scroll and then pressing the ‘OK’ button. You will
need to return to the menu several times if you want to setup days individually.
3. Next, the target temperature and setback temperature (on and o) need
to be set for each ‘heating cycle’. Once again, use the Arrow keys to scroll
and OK to select a temperature.
4. Once this is set, you need to choose the periods of the day that you want
to be heated. Each one is referred to as a ‘heating cycle’ and is denoted on
the display by a series of blocks corresponding to the times of day marked
next to it. Set the first heating cycle by scrolling to select a start time and
pressing OK. Then select an end time and press OK. Running mode allows
up to 4 independent heating cycles. Each one of these needs to be set,
however, if you require less than 4, simply set the on and o times for
unwanted cycles to the same time which will eectively cancel them.
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