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.
2
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
Loading...