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Fitting the HRT4-ZW Room Thermostat

Before  final  installation  it  is  advisable  to  commission  the  product  and  ensure  that  the 
Thermostat and Receiver are communicating satisfactorily. First install the 2 type AAA 
batteries provided making sure that 
they are fitted correctly as indicated 
by  the  markings  in  the  battery 
compartment.

Once  the  thermostat  and  receiver 
are  successfully  ‘paired’  the 
thermostat  can  be  installed  in  its 
correct  location.  Please  see  Z-
Wave  pairing  instructions  on  page 
8.

Avoid  installing  the  thermostat 
against  or  behind  any  large  metal 
surfaces which could interfere with the radio signals to and from the CentaurPlus timer 
with  combined  receiver.  The  HRT4-ZW  should  be  mounted  on  an  internal  wall 
approximately 1.5 metres 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.

Before fixing the wall plate in position check to see that the thermostat and boiler are still 
able to communicate satisfactorily by turning the thermostat temperature up and down to 
switch the boiler on and off.

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  home  into  its  plug  in  terminal  block. 
Tighten the 2 captive screws on the underside of the 
unit.

Now ensure that the heating system is responding to 
the ON/OFF commands from the Room Thermostat 
and  explain  its  operation  to  the  householder  before 
handing over the User Instructions.

11

Summary of Contents for CentaurPlus ZW

Page 1: ...g timeswitch with the CentaurPlus ZW will allow the room thermostat to be connected wirelessly producing immediate energy savings in houses where no previous room thermostat has been fitted The device...

Page 2: ...le circuit diagram for a typical combi boiler installation is shown below This diagram is schematic and should be used for guidance only N N E L L 1 2 3 4 For precise terminal connection information p...

Page 3: ...mounted remembering that the backplate fits to the left hand end of the control Mark the fixing positions through the slots on the backplate fixing centres of 60 3mm drill and plug the wall then secu...

Page 4: ...ty must be maintained and all bare earth connectors must be sleeved Ensure no earth conductors are left protruding outside the central space enclosed by the backplate Internal diagram C17 ZW The Centa...

Page 5: ...of the unit locate into the terminal slots in the backplate Tighten the two captive retaining screws to fix the unit securely Then switch on the mains supply On completion of the installation please r...

Page 6: ...IT During power interruptions the display will be blank after 3 days the current time of day will be lost These measures are to prolong the battery life SERVICEAND REPAIR This timeswitch is NOTuser se...

Page 7: ...ide optimum comfort with close control of the energy used to heat the home without the need for additional wiring or unsightly cable runs The HRT4 ZW will only operate when 2 x AAA batteries have been...

Page 8: ...o make the boiler switch on and off N B There is a half second delay in switching On and Off on receipt of the commands There is no click from the thermostat which is silent in operation but there wil...

Page 9: ...ollowing the procedure shown under Stage 1 of the pairing instructions Only use Stage 2 if a radio link cannot be successfully established between the two devices Stage 2 only used if above procedure...

Page 10: ...l far more efficiently than any traditional thermostat When used with a condensing boiler the TPI thermostat will help to save energy as the control algorithm allows the boiler to operate in condensin...

Page 11: ...Ensure that there will be enough space to allow easy access to the two retaining screws located at the base of the wall plate Before fixing the wall plate in position check to see that the thermostat...

Page 12: ...xtension to On period instant advance Mounting Industry standard 6 terminal plug in wall plate Transmitter Frequency 868MHz Design Standard EN60730 2 7 IP30 EN300 220 R TTE Directive EN301 489 Thermos...

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