Heatit Z-WATER2 User guide

1. INTRODUCTION
Heatit Z-Water2 is a DIN-rail regulator for controlling
waterbased heating systems. The module clips right onto a
DIN-rail and allows you to control your waterbased heating
through your Z-Wave™ network.
Heatit Z-Water2 is equipped with 9 potential free relays for
actuators. It also has 2 analog inputs for temperature sensors.
The Heatit Z-Water2 relays may be controlled by associations
with other Z-Wave thermostats e.g Heatit. Each relay can
control one or several actuators in your underfloor heating
system.
2. STATEMENT REGARDING PRODUCTS FROM MULTIPLE
MANUFACTURERS
Please read this before installation
This device may be used with all devices certified with the
Z-Wave Plus™ certificate and should be compatible with
such devices produced by any manufacturer. Every primary
controller is dierent depending on the manufacturer, their
target audience and intended use/application. Please review
the functionalities implemented by the primary controller you
intend to use with our Z-Wave Plus certified device to ensure
that it provides the necessary controls to take full advantage of
our product’s capabilities.
3. BEHAVIOR WITHIN THE Z-WAVE NETWORK
This device may be operated within any Z-Wave™ network
with Z-Wave-certified devices from other manufacturers. All
non-battery-operated nodes within the network will act as
repeaters regardless of manufacturer to increase the reliability
of the network. On delivery, the device does not belong to any
Z-Wave network. The device needs to be added to an existing
network to communicate with the other devices within it.
Devices may also be removed from a network. The add/
remove processes are initiated by the primary controller of the
Z-Wave network.
4. INSTALLATION GUIDELINES
Installation must be done by a qualified electrician in
accordance with national building codes. Before installation,
disconnect the power to the device from the mains. During
installation of the device, power to the device must be
disconnected AT ALL TIMES!
Max tightening torque for terminal screws: 2Nm
Use the following procedure to install Heatit Z-Water2:
1. Place the top part of the DIN rail mounting on the Heatit
Z-Water2 over the top of the DIN rail so it hooks onto the
rail.
2. Use a flathead screwdriver to push the DIN rail mounting tab
downward.
3. Tilt the bottom of the Heatit Z-Water2 until it touches the
DIN rail. Now let go of the DIN rail mounting tab so it locks
into place.
4. Make all the necessary connections to the device (max
tightening torque for all screw terminals is 2Nm). Apply
power to the device after all connections have been made.
TABLE OF CONTENTS
1. Introduction
2. Statement regarding products from multiple
manufacturers
3. Behaviour within the Z-Wave network
4. Installation guidelines
5. Connections
6. Quick Start
7. Add/Remove
7.1 Method 1: Standard (Manual)
7.2 Method 2: SmartStart (Automatic)
8. Factory Reset
9. Startup
10. LED blinking patterns description
11. QR-Code Placement (DSK)
12. Security
13. Node Information Frame
14. Associations
14.1 Setting and Removing Associations
15. Association Groups
16. Configuration Parameters
17. Calibration
18. Command Classes
18.1 Basic Command CLass
18.2 Binary Switch Command Class
18.3. Multilevel Sensor Command Class
18.4. Indicator Command Class
19. Supported Command Classes
20. Other features
21. Dimensions
22. External antenna connector
Product info
HEATIT
Z-WATER2
Installers manual
Firmware version Document version
FW 1.0 2023-A
Article no. Document date
45 124 95 01.05.2023
Org. doc. date 01.05.2023
TO PRODUCT
DOCUMENTS

5. CONNECTIONS
6. QUICK START
1. Switch o the mains supply (disable the fuse).
2. Fasten the device onto the DIN rail.
3. Connect wires according to the labeling described in
Chapter5.
4. After verifying the connections, switch the mains voltage on.
5. Set the primary controller in add mode (security/non-
security).
6. Press the reset button on the product 3 times in a rapid
sequence. Heatit Z-Water2 is now included in your Z-Wave
network.
7. ADD/REMOVE
Please read this before installation
The primary controller/gateway has a mode for adding or
removing devices. Please refer to your primary controller
manual on how to set the primary controller in add/remove
mode.
The device may only be added or removed from the network
if the primary controller is in add/remove mode. When the
device is removed from the network, it will NOT revert to
factory settings.
An always listening node must be powered continuously
and reside in a fixed position in the installation to secure the
routing table. Adding the device within a 2 meter range from
the gateway can minimize faults during the Interview process.
There are two ways to add the device to a Z-Wave network.
7.1 Method 1: Standard (Manual)
Add/remove mode is indicated on the device by a blinking
green LED. It indicates this for 90 seconds until a timeout
occurs, or until the device has been added to/removed from
the network. Configuration mode can also be cancelled
by performing the same procedure used for starting
Configuration mode.
To start the configuration process, press the reset button 3
times in rapid succession. The LED will light solid green for 3
seconds if add/remove is successful. The device is now ready
for use with default settings.
NB! When the device is removed from the gateway, the
parameters are not reset. To reset the parameters, see Chapter
”Factory reset”.
If inclusion fails, please perform a ”remove device” process and
try again. If inclusion fails again, please see “Factory reset”.
7.2 Method 2: SmartStart (Automatic)
SmartStart enabled products may be added to a Z-Wave
network by scanning the Z-Wave QR-Code on the product
if your primary controller supports SmartStart inclusion. No
further action is required and the SmartStart product will be
added automatically after being powered on within range of
the primary controller.
8. FACTORY RESET
Press and hold the reset button. After 3 seconds the LED will
start to blink green. After 20 seconds the LED will start blinking
green rapidly. You may now release the button. If reset was
successful the LED will light solid green for 3 seconds.
Please use this procedure only when the network primary
controller is missing or otherwise inoperable.
9. STARTUP
After powering up the device for the first time, all the parameters will
have default settings.
SCHEMATIC FOR USE WITH 230VAC ACTUATORS
NTC NTC
N
L
NTC NTC
N
+24VDC
0VDC
L
SCHEMATIC FOR USE WITH 24VDC ACTUATORS

14.ASSOCIATIONS
Z-Wave devices interact with other Z-Wave devices. The
relationship between one device controlling another device is
called an association. In order to control a subordinate device,
the controlling device needs to maintain a list of devices that
will receive controlling commands. These lists are called
”Association Groups”. They are always related to the specific
event triggered (e.g., sensor reports). In case the event is
triggered, all devices stored in the respective association group
will receive a joint wireless command.
14.1 Setting and Removing Associations
Associations may be assigned and removed via Z-Wave
commands. Please refer to your primary controller/Z-Wave
gateway for more information.
15. ASSOCIATION GROUPS
With Multi Channel support:
DEVICE 1 (ENDPOINT 1) RELAY OUTPUT 1
Group 1
Lifeline.
Lifeline Group to be used by primary controller, sends:
- Device Reset Notification
- Indicator Report
- Binary report
Sends Binary report On / O when relay output 1 is activated.
Max. nodes in group: 1
DEVICE 2 (ENDPOINT 2) RELAY OUTPUT 2
Group 1
Lifeline.
Sends Binary report On / O when relay output 2 is activated.
Max. nodes in group: 0
DEVICE 3 (ENDPOINT 3) RELAY OUTPUT 3
Group 1
Lifeline.
Sends Binary report On / O when relay output 3 is activated.
Max. nodes in group: 0
DEVICE 4 (ENDPOINT 4) RELAY OUTPUT 4
Group 1
Lifeline.
Sends Binary report On / O when relay output 4 is activated.
Max. nodes in group: 0
DEVICE 5 (ENDPOINT 5) RELAY OUTPUT 5
Group 1
Lifeline.
Sends Binary report On / O when relay output 5 is activated.
Max. nodes in group: 0
DEVICE 6 (ENDPOINT 6) RELAY OUTPUT 6
Group 1
Lifeline.
Sends Binary report On / O when relay output 6 is activated.
Max. nodes in group: 0
DEVICE 7 (ENDPOINT 7) RELAY OUTPUT 7
Group 1
Lifeline.
Sends Binary report On / O when relay output 7 is activated.
Max. nodes in group: 0
DEVICE 8 (ENDPOINT 8) RELAY OUTPUT 8
Group 1
Lifeline.
Sends Binary report On / O when relay output 8 is activated.
Max. nodes in group: 0
DEVICE 9 (ENDPOINT 9) RELAY OUTPUT 9
Group 1
Lifeline.
Sends Binary report On / O when relay output 9 is activated.
Max. nodes in group: 0
DEVICE 10 (ENDPOINT 10) ANALOGUE INPUT 1
Group 1
Lifeline.
Sends Multilevel Sensor Reports for input 1.
Max. nodes in group: 0
DEVICE 11 (ENDPOINT 11) ANALOGUE INPUT 2
Group 1
Lifeline.
Sends Multilevel Sensor Reports for input 2
Max. nodes in group: 0
16. CONFIGURATION PARAMETERS
Z-Wave products are supposed to work out of the box after
inclusion. Some device configuration may, however, alter
the functionality to better serve user needs or unlock further
enhanced features. All the parameters below do not feature
altering capabilities, advanced or read only flags.
10.LED BLINKING PATTERNS DESCRIPTION
The device supports numerous LED blinking patterns to make
it as easy as possible to identify what the device is doing.
Device Not in Network
The LED will blink red when the device is
not added to a Z-Wave network.
0s 1s
0,5s 2s 3s 4s 5s
Add/Remove
When device enters add/remove mode
the LED will blink green.
If successful, the LED will light up in solid
green for 3 seconds.
If unsuccessful, the LED will light up in
solid red for 3 seconds.
0s 1s
0,5s 2s 3s xs x+3s
Successful
Unsuccessful
Factory Reset
If the button is held for more than 3 seconds, the GREEN LED will start blinking with 0.5s intervals.
When the button has been held for 20 seconds, the GREEN LED will blink rapidly with 0.1s intervals for 3 seconds.
Figure 1 (success)
Within the 3 second period the button must be released.
If the button is released within this period, the device will indicate that it has been successfully reset by lighting up in
solid GREEN for 3 seconds.
Then the device will start blinking RED because it is not included in a gateway.
0s 1s
0,5s 2s 3s 4s 5s 19s 20s 0,5s 1,5s 2,5s
1s 2s 3s 1s 2s 3s
Figure 2 (fail)
If the button is released before the 3
seconds period, the device will indicate
fail by turning RED LED on for 3 seconds.
Figure 3 (fail)
The button MUST be released between
20 and 23 seconds for local reset to take
place. If held longer, the device will ignore
the command.
11. QR-CODE PLACEMENT (DSK)
The QR-Code is needed when including a device using S2
security or SmartStart. The DSK can be found in the QR-Code
and is located;
• On the product.
• In the Quick Guide.
• On the packaging box/gift box.
12. SECURITY
S2 security enhances Z-Wave Plus with an additional layer of
AES 128-bit encryption of the wireless Z-Wave communication
to prevent hacking and man-in-middle attacks on the home
network.
This device supports S2 and has a Z-Wave DSK QR-Code label
that may be used when the device is added to the Z-Wave
home network. The primary controller will ask for a 5-digit
code. They are the first underlined 5 digits located on the
QR code sticker. The primary controller will then ask you to
confirm the rest of the code that is contained in the QR-Code.
13. NODE INFORMATION FRAME
The node information frame is the ”business card” of a Z-Wave
device. It contains information about the device type and
its technical features. The add and remove procedure of
the device is confirmed by sending out a node information
frame. Besides this, it may be necessary for certain network
operations to send out a node information frame.
0s 1s
0,5s 2s 3s 4s 5s
3<x<20s
Released @ x seconds
6<x+3<23s
0s 1s
0,5s 2s 3s 4s 5s 19s 20s 21s 22s 23s 24s20,5s 21,5s 22,5s

PARA NO# PARA SIZE (BYTE) NAME
SHORT
DESCRIPTION /
COMMENT MIN MAX DEFAULT
DESCRIPTION
OF VALUE
1 1 Input 1
Calibration
Manually calibrate
input 1 ±6°C. -60 60 0
-6.0°C to 6.0°C.
Calibrates input 1 by ±6°C.
(Default is 0°C).
NB! To set a negative value, use
256 and subtract the desired
value.
2 1 Input 2
Calibration
Manually calibrate
input 2 ±6°C. -60 60 0
-6.0°C to 6.0°C.
Calibrates input 2 by ±6°C.
(Default is 0°C).
NB! To set a negative value, use
256 and subtract the desired
value.
3 2
Temperature
report
interval
Set the time interval
between consecutive
temperature reports.
30 65535 870 30 to 65535 seconds.
870s (default 14 min 30 sec).
4 1
Temperature
report
hysteresis
Set the change in
temperature required
to send a temperature
report based on
change.
1 100 10
0.1°C to 10°C.
10 (1°C) (Default).
5 1
Power
restore
state
The state the relays
should return to once
power is restored after
a power failure.
0
2
O.
1 On.
2Returns relay state as it was
before power outage. (Default).
6 1 Inverted
output
Configures if the
function of the
relay output shall be
inverted.
0
0
Standard relay output
functionality, non-inverted.
(Default).
1Relay outputs have inverted
functionality.
7 1
Valve
inactivity
exercise
Relays will turn on to
open valves for the
selected amount of
time after 30 days of
inactivity.
0
0
Valves do not open
periodically. (Default).
1 30
1 to 30 minutes, amount of
time relays should be turned
on for after 30 days of relay
inactivity.
8 1
Select
antenna
type
Choose if the device
uses the internal
antenna or an external
wired antenna.
0
0
Internal antenna.
(Default).
1External wired antenna.
17. CALIBRATION
Parameters 1 and 2 allow you to calibrate the temperature
displayed in the controller/gateway. If the temperature sensor
readout is not correct, you can make minor changes to
the temperature readout. You can calibrate the measured
temperature by ±6°C degrees.
18. COMMAND CLASSES
Besides the mandatory command classes, the device has
support for the following command classes:
18.1 Basic Command Class
The Basic Command Class is mapped to the Binary Switch
Command Class and uses the following values:
Basic Set 0x00 = Binary Switch Set 0x00
Basic Set 0xFF = Binary Switch Set 0xFF
18.2 Binary Switch Command Class
Binary Switch commands are used to control the relays.
Uses the following values:
0x00 = OFF
0xFF = ON
18.3 Multilevel Sensor Command Class
The device supports Multilevel Sensor Command Class.
Supported Multilevel Sensor attributes are:
Type: Air Temperature (0x01)
Scale: Celcius (°C) (0x00)
Precision: 1 decimal
Size: 4
18.4 Indicator Command Class
The device supports Indicator Command Class.
The indicator Command Class will turn ON/OFF internal LED.
19. SUPPORTED COMMAND CLASSES
The following table lists all Command Classes supported by
the Z-Wave device. The device supports S0, S2 Authenticated
security and S2 Unauthenticated security.
ASSOCIATION VERSION INSECURE ON
SECURE INCLUSION
SECURE ON
SECURE INCLUSION
Association v2 Yes
Association Group Information v3 Yes
Device Reset Locally v1 Yes
Firmware Update MD v5 Yes
Manufacturer Specific v2 Yes
Multi Channel Association v3 Yes
Multi Channel v4 Yes
Power level v1 Yes
Security v1 Yes
Security 2 v1 Yes
Supervision v1 Yes
Indicator v3 Yes
Transport Service v2 Yes
Version v3 Yes
Z-Wave Plus Information v2 Yes
Binary Switch v2 Yes
Basic v2 Yes
Configuration v4 Yes
Multilevel Sensor v11 Yes
20.OTHER FEATURES
External antenna (U.FL female connector)
The device allows you to connect a U.FL female connector
antenna. This allows the antenna to be wired outside of
the installation location in cases of unsatisfactory wireless
performance. This connector is placed in the middle of the
radio module that is sticking out of the main PCB. See Chapter
22 for a detailed illustration of the placement. Set parameter 8
to 1 to activate this feature.
Automatic valve exercise
Valve exercising is beneficial during longer periods of inactivity
to ensure the proper operability of the valves and prevent the
valves from getting stuck. If not exercised, corrosion or other
buildup may result in the valve becoming inoperable or prevent
complete closure. To activate this feature see parameter 7.

Heatit Controls AB · Läkarvägen 4, 454 31 BRASTAD, SWEDEN
Phone: [phone] · [email protected] · heatit.com
21. DIMENSIONS
PRODUCT INFO Heatit Z-Water2
FEATURES
• Z-Wave
• Regulator for waterbased heating systems
• 9 potential free relays
• Valve exercise
• Can control 230VAC actuators and 24VDC actuators
from an external power supply
• Can be used with Heatit thermostats in each heating zone
• DIN-rail mounting
• SmartStart
• Connector for external antenna
• Firmware update (OTA)
• Supports encryption mode S0, S2 Authenticated Class,
S2 Unauthenticated Class
The product must be used with a security-enabled Z-Wave
Controller in order to fully utilize security/encryption.
TECHNICAL DATA
Protocol Z-Wave, 868.4MHz
Chip Z-Wave 800 chip
Rated voltage 230VAC 50Hz
Power consumption 0.4W standby
Ambient temperature 5°C to 40°C
Storage temperature -30°C to 70°C
Humidity 10% to 85% RH
Max. switching current 5A
Max load per relay 1385VA/150W
Inputs 10kΩNTC
Range RF Min. 40 meters
Screw terminals Max 2.5mm 2Nm
IP Code IP20
Size (LxHxW) 105 x 58 x 86mm
Approvals Z-Wave Plus v2, CE
ACCESSORIES
Heatit DIN Trafo 24V Art.no: 54 304 57
MAINTENANCE
The device is maintenance-free. Indoor use only.
86mm
105mm
58mm
22.EXTERNAL ANTENNA CONNECTOR
We have designed this product in accordance with our strict quality requirements (ISO 9001) and
environmental requirements (ISO 14001). All electrical installations must be carried out by an authorized
electrical installer. The product must be installed in accordance with our installers manual and national
building codes. Any wrongful installation, misuse or damage to the product is not covered under warranty.
Heatit Controls AB can not be held liable for any type of errors or omittances in our product information.
Product specifications may change without further notice.
DISPOSAL GUIDELINES
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection
facilities. Contact your local government for information regarding the collection systems
available. If electrical appliances are disposed of in landfills or dumps, hazardous substances
can leak into the groundwater and get into the food chain, damaging health and well-being.