HRT4-ZW
User and Installation Instructions
The HRT4-ZW forms part of a Z-Wave Plus home
TM
automation network.
The HRT4-ZW is a wireless electronic battery powered
room thermostat that uses interoperable two-way RF
mesh networking technology to provide optimum
comfort with close control of the energy used to heat the
home without the need for additional wiring or unsightly
cable runs.
This document provides information specific to the ZWave Plus technology implemented on HRT4-ZW, to
ensure correct interoperability between third party
devices.
The HRT4-ZW has been developed to control central
heating systems where the demand temperature can
be set locally or remotely by a third party device. The
HRT4-ZW also has the capability to act as a
temperature sensor.
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USER INSTRUCTIONS
The HRT4-ZW thermostat uses the latest control
technology to provide extremely accurate temperature
control which will help to keep your energy usage as low
as possible without affecting your comfort levels. In fact
comfort levels may well be improved as the control
accuracy should ensure that the room does not
‘overheat’ before switching off.
The display will show
t h e r e q u i r e d
temperature setting and
can be adjusted in i
ncrements of 1°C.
To adjust the required
temperature setting turn
the dial anti clockwise to
d ec r e a se i t a n d
clockwise to increase it.
3
When the thermostat is in the ‘call for heat’
condition a flame symbol will appear in the
display.
Pressing the temperature setting dial will allow
the user to check the current actual measured
room temperature which will be displayed for
approx 7 seconds before returning to the set
temperature.
The aerial symbol complete with radio wave
symbols in the display of the HRT4-ZW
thermostat indicates that it is communicating
satisfactorily with the rest of the system.
A flashing radio wave indicates a loss of
communication. This may be temporary and can often
be restored by turning the thermostat dial and
increasing or decreasing the temperature to make the
thermostat send a temperature update to a controller. If
this has no effect please see Z-Wave pairing
instructions on page 12.
4
A radio mast symbol with no radio waves
indicates that the HRT4-ZW has not been
signed on to enable it to communicate with
the Z-Wave system. In this case you may
wish to contact the Installer as the indication
is that the product has not been commissioned when
the installation took place. Alternatively see the Z-Wave
pairing instructions on page 12.
Note: This product can be included and operated in any
Z-Wave network with other Z-Wave certified devices
from other manufacturers and/or other applications. All
non-battery operated nodes within the network will act
as repeaters regardless of vendor to increase reliability
of the network.
5
Battery Replacement
The HRT4-ZW runs on 2 x type AAA (Alkaline) non
rechargeable batteries and is designed to give a battery
life of approximately two years – under normal usage
conditions.
When the batteries are
nearing the end of their life
a low battery symbol will
appear in the display and
the batteries should be
changed within a few days.
Battery should
be changed
immediately
Low battery symbol
appears first when
the batteries are
nearing the end of
their life.
If the batteries are not changed at this point eventually a
‘LO’ battery message flashes intermittently in the
display and if this happens the batteries should be
changed immediately.
To change the batteries it is necessary to remove the
thermostat from the wall. To do this first undo the two
captive screws at the base of the thermostat and swing
the thermostat up and away from the wall plate.
6
Remove the old batteries and replace
them with two new AAA size alkaline
batteries ensuring that they are fitted
correctly as indicated by the terminal
markings in the battery compartments.
Once the batteries are fitted, re-fit the thermostat to the
wall plate by engaging with the lugs at the top of the wall
plate and push the thermostat into position. Locate it
over the captive screws at the base of the wall plate and
tighten so that the thermostat is locked into position.
Check the temperature setting is correct and adjust if
necessary.
Please dispose of old batteries
responsibly
7
Fitting the HRT4-ZW Room Thermostat
Avoid installing the thermostat against or behind any
large metal surfaces which could interfere with the radio
signals. The HRT4-ZW should be mounted on an
internal wall approximately 1.5 meters from floor level
using the wall plate provided and should be in a position
away from draughts, direct heat and sunlight. Ensure
that there will be enough space to allow easy access to
the two retaining screws located at the base of the wall
plate.
8
Offer the plate to the wall in the position where the
HRT4-ZW is to be mounted and mark the fixing
positions through the slots in the wall plate. Drill and
plug the wall, then secure the plate into position. The
slots in the wall plate will compensate for any
misalignment of the fixings.
Complete the installation by swinging the room
thermostat into position by engaging with the lugs at the
top of the wall plate before pushing it carefully into its
plug-in terminal block.
Tighten the 2 captive screws on the
underside of the unit.
Now ensure that the system is
responding to the ON/OFF commands
from the Room Thermostat and explain its operation to
the householder before handing over these User
Instructions.
9
DIL switch settings – LC (Load Compensation)
temperature control software
Thermostats using LC control algorithms will reduce the
temperature swing that normally occurs when using
traditional bellows or thermally operated thermostats.
As a consequence, an LC regulating thermostat will
maintain the comfort level far more efficiently than any
traditional thermostat.
When used with a condensing boiler, the LCI
thermostat will help to save energy as the control
algorithm allows the boiler to operate in condensing
mode more consistently compared to older types of
thermostat.
Ÿ DIL switch numbers 7 and 8 should be
set as diagram opposite.
Ÿ For Gas boilers set the LC setting to 6
cycles per hour. (Default setting)
Ÿ For Oil boilers set the LC setting to 3
cycles per hour.
Ÿ For Electric heating set the LC setting
to 12 cycles per hour.
SWITCH CONFIGURATION HRT4-ZW
1 INSTALLER MODE
2 NOT USED
3 NOT USED
5 NOT USED
4 NOT USED
6 NOT USED
7
Switch positions for
different LC settings.
ON
OFF
8
CYCLE
3
6
12
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INSTALLATION MENU / INSTRUCTIONS
Set DIL switch 1 to ’ON’ position on the back of the unit,
scroll through the function menu by rotating the dial, to
select the required function press the dial. On selecting
a function the character will start flashing while waiting
for a response from the 3rd party device, a successful
response will display a P after the character and a
failure will be displayed with an F.
If no response has been received from a 3rd party unit
within the time-out period, the HRT4-ZW will report a
failure.
To exit installation mode, change DIL switch 1 to its
‘OFF’ position.
Note: All functionality is not accessible in Installation
mode.
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Mode
Indication
I
E
N
L
Li
P
A
D
C
Z-Wave Function
Add Node onto network (See Point 1,4)
Remove Node from network (See Point 1,4)
Transmit Node Information Frame (NIF) (See Point 2)
Learn Mode - use this command for: (See Point 1,5,8)
Add or Remove with another controller (does not support
control group copy) Adding and reception of a primary role
Receive Period Enabled (Listening).
This function will keep the unit awake for 60sec, no Pass or
Fail response will be provided
Protocol Reset (See Point 9) - Press twice to activate, will
restore all parameters back to factory default settings
(Please use this procedure only when the primary controller is
missing or otherwise inoperable)
Associate Control Unit (See Point 3,4,6)
Disassociate Control Unit 3, 6
Controller Shift (See Point 3)
This function allows the installer to manually relinquish the
primary controller role of the HRT4-ZW to become a
secondary or inclusion controller.
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1 Once the character starts flashing the installer has
60 sec to activate the 3rd party unit, once the 3rd
party unit has been activated the process must be
completed within 240 sec or HRT4-ZW will timeout.
2 If an outcome is not received within 5sec the
HRT4-ZW will report a failure.
3 On selecting this function the installer has 60s to
initiate a 3rd party unit before the HRT4-ZW times
out and reports a failure
4 Nodes supporting ‘Thermostat Mode Command
Class’ will be associated/dissociated with Group 2
and nodes supporting ‘Binary Switch Command
Class’ will be associated/dissociated with Group 3.
5 All association settings will be lost if learn mode has
been activated with another controller regardless of
a pass or fail result, any associations settings will
have to be re-configured either remotely or manually.
13
6 Nodes can be added/removed from any of the
groups in the ‘Association Command Classes’ by
using these commands.
7 In the instance both ‘Thermostat Mode’ and ‘Binary
Switch’ Command Class are supported, the
HRT4-ZW will default to use the ‘Thermostat Mode
Command Class’.
8 Once the character starts flashing the installer has
20 sec to activate the 3rd party unit and the process
must be completed within 20 sec (2 sec. classic
inclusion, than after 3 retries for NWI inclusion)
9 No time delay between two successive presses.
Network Update Scheme
When the unit is a secondary or inclusion controller with a
SUC/SIS present, the unit will request network updates
once every 23 hours.
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SUPPORTED DEVICE AND COMMAND CLASSES
Z-Wave Plus
Device Classes
Generic Device Class GENERIC_TYPE_THERMOSTAT
Specific Device Class SPECIFIC_TYPE_THERMOSTAT_GENERAL_V2
Basic Device Class Reporting Portable Controller
Supported Command Classes
Command Class Commands Supported
Basic CC (V1)
Mapping of Basic CC:
Basic Set: 0x00 = ENERGY SAVING MODE (Temperature Set Point = 5˚C)
0xFF = COMFORT MODE (Temperature Set Point = 21°C)
Basic Report: 0x00 = ENERGY SAVING MODE (Temperature Set Point = 5˚C)
0xFF = COMFORT MODE (Temperature Set Point > 5˚C)
Manufacturer Specific (V2)
Implemented Device Classes
Set
Get
Report
Get
Report
Device Specific Get
Device Specific Report
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Manufacturer ID = 0x0059
Product Type ID = 0x0001
Product ID = 0x0005 (HRT4-ZW)
Device ID Type 0 and 1 for serial number (Data format Binary, length 4 Bytes)
Version (V2) Get
Report
Version Command Class Get
Version Command Class Report
Provides the version number of the Z-Wave stack, Command Class, Firmware
and Hardware.
Z-Wave Plus Info (V2) Get
Report
Role Type: ROLE_TYPE_CONTROLLER_PORTABLE_REPORTING
Node Type: ZWAVEPLUS_INFO_REPORT_NODE_TYPE_ZWAVEPLUS_NODE
Installer Icon: ICON_TYPE_GENERIC_THERMOSTAT_HVAC
User Icon: ICON_TYPE_GENERIC_THERMOSTAT_HVAC
Association (V2) Set
Get
Report
Remove
Supported Groupings Get
Supported Groupings Report
Specific Group Get
Specific Group Report
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HRT4-ZW supports 6 association groups, Group 1 (Lifeline) is having only one
node and Group 2 to Group 6 are having maximum 4 nodes.
Association Group Info (V1) Group Name Get
Group Name Report
Group Info get
Group Info Report
Group Command List Get
Group Command List Report
Six association groups are supported.
Group 1:
name - “Lifeline”
Profile MSB - ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL
Profile LSB -
ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL_LIFELINE
Supported Command class and command COMMAND_CLASS_BATTERY, BATTERY_REPORT
COMMAND_CLASS_THERMOSTAT_SETPOINT,
THERMOSTAT_SETPOINT_REPORT
COMMAND_CLASS_SENSOR_MULTILEVEL,
SENSOR_MULTILEVEL_REPORT
COMMAND_CLASS_THERMOSTAT_OPERATING_STATE,
THERMOSTAT_OPERATING_STATE_REPORT
COMMAND_CLASS_DEVICE_RESET_LOCALLY,
DEVICE_RESET_LOCALLY_NOTIFICATION
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Group 2:
name - "Thermostat Mode Control"
Profile MSB - ASSOCIATION_GROUP_INFO_REPORT_PROFILE_SENSOR
Profile LSB -
AGI_REPORT_PROFILE_MULTILEVEL_SENSOR_TYPE_TEMPERATURE
Supported Command class and command -
COMMAND_CLASS_THERMOSTAT_MODE, THERMOSTAT_MODE_SET
Group 3:
name - "Switch Control"
Profile MSB - ASSOCIATION_GROUP_INFO_REPORT_PROFILE_SENSOR
Profile LSB -
AGI_REPORT_PROFILE_MULTILEVEL_SENSOR_TYPE_TEMPERATURE
Supported Command class and command -
COMMAND_CLASS_SWITCH_BINARY, SWITCH_BINARY_SET
Group 4:
name - "Battery Info"
Profile MSB - ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL
Profile LSB -
ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL_NA
Supported Command class and command -
COMMAND_CLASS_BATTERY, BATTERY_REPORT
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Group 5:
name - "Thermostat Set point"
Profile MSB - ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL
Profile LSB -
ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL_NA
Supported Command class and command -
COMMAND_CLASS_THERMOSTAT_SETPOINT,
THERMOSTAT_SETPOINT_REPORT
Group 6:
name - "Air Temperature"
Profile MSB - ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL
Profile LSB -
ASSOCIATION_GROUP_INFO_REPORT_PROFILE_GENERAL_NA
Supported Command class and command -
COMMAND_CLASS_SENSOR_MULTILEVEL,
SENSOR_MULTILEVEL_REPORT
Thermostat Mode (V1) Set
Get
Report
Supported Get
Only ‘Heat Mode’ is supported within this command class, which can only
read, it cannot be set.
Supported Report
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Battery Level (V1) Get
Provides the current battery voltage level. Battery Level Reports and Low
Battery Warnings (Battery Level Reports with parameter = 0xFF) can be sent
unsolicited to nodes in Group 4.
Thermostat Set point (V1) Set
Set Point type of Heating is supported. The HRT4-ZW will accept Set Point
SET commands if the set point type matches the thermostat type
configuration. HRT4-ZW will send a Set Point Report in response to a Set
Point GET message or unsolicited message can be sent to nodes in Group 5
when the set temperature is changed locally on the HRT4-ZW.
Multilevel Sensor (V1) Get
The HRT4-ZW will respond to the Multilevel Sensor GET command with a
Multilevel Sensor REPORT. This report can be requested or sent unsolicited
to the nodes in Group 6. If the temperature sensor functionality is disabled,
the HRT4-ZW will report 0x8000.
Report
Get
Report
Supported Get
Supported Report
Report
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Thermostat Operating
State (V1)
Thermostat Operating State Command Class is used to obtain the operating
state of the thermostat. Only Heat State supported.
Device Locally Reset (V1) Report
Protocol reset put the device in factory default mode, all the configuration and
association set to factory default and removing the device from Z-Wave network.
Configuration (V1) Set
The unit supports 3 single byte configurations for the temperature sensor in the
range 1-3 respectively.
Configuration Parameter Number 1:
Value: 0x00 - 0x7F Disables the temperature sensor,
0x80 - 0xFF Enables temperature sensor.
Default value = 0xFF
Configuration Parameter Number 2:
Value: 0x00 - 0x7F Celsius,
0x80 - 0xFF Fahrenheit.
Default value= 0
Configuration Parameter Number 3:
Value: 1 to 100 - Delta Temperature in 0.1˚C steps
Default value = 10 (1.0˚C)
Get
Report
Get
Report
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Wake Up (V2) Wake Up Interval Capabilities Get
Wake Up Commands are available through the ‘Wake Up Capabilities Report’.
Default wakeup settings will be used if the unit is not included onto a network
or has not received a valid wake up interval.
Power Level (V1) Power Level Set
Powerlevel Command Class defines RF transmit power controlling commands
useful when installing or testing a network.
Wake Up Interval Capabilities Report
Wake Up Interval Set
Wake Up Interval Get
Wake Up Interval Report
Wake Up Notification
Wake Up No More Information
Power Level Get
Power Level Report
Power Level Test Node Set
Power Level Test Node Get
Power Level Test Node Report
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Supported Command Classes
Command Class Commands Controlled
Thermostat Mode (V1)
This Command Class will use thermostat modes ‘OFF’ and ‘HEAT’ to
control a 3rd party unit. The HRT4-ZW will be associated in group 2.
This will use SET commands to control a 3rd Party unit, and be
associated in group 3.
Note: For more information about Z-Wave command classes and
their use refer to "SDS12652 and SDS12657 Z-Wave Command
Class Specification" version 8 or above.
Set
SetSwitch Binary (V1)
Note: To preserve battery life in a wider system, it is
recommended that minimum default values are set for the
following parameters:
Ÿ Wake up Interval: 15 Minutes (min)
Ÿ Temperature Report: Δ0.5°C (min) and/or Wake up (15 Mins)
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Thermostat specifications HRT4-ZW
Power supply: 2 x AAA alkaline batteries
Temperature accuracy: +/- 0.5°C
Transmitter frequency: 868MHz
Dimensions: 86mm x 86mm x36.25mm
Pollution control: Degree2
Design standard: BS EN 60730 - 2-9, EN 60730 - 2-9
Temperature range: 5°C – 30°C
Rated Impulse voltage: Cat 1 – 1500v
Enclosure protection: IP30
Operating temperature Range: 0-40°C
Double Insulated: Yes
Case material: Thermoplastic, flame retardant
Secure Meters (UK) Ltd
Secure House, Lulworth Close,
Chandlers Ford, Eastleigh, SO53 3TL
United Kingdom
t: +44 1962 840048 f: +44 1962 841046
www.securemeters.com
Part Number BGX701-048-Issue 4
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