Horstmann HRT4-ZW User Guide
Contents
1. HORSTMANN HRT4 ZW and ASR ZW User and Installation Instructions Wireless Z Wave Battery Operated Electronic Room Thermostat with TPI temperature control software and ASR ZW receiver unit 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 The HRT4 ZW will only operate when 2 x AAA batteries have been fitted and the thermostat is installed and communicating with the ASR ZW receiver unit INSTALLATION AND CONNECTION OF THE HRT4 ZW SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON 1 2 What is a room thermostat an explanation for householders A room thermostat simply switches the heating system on and off as necessary It works by sensing the air temperature switching on the heating when the air temperature falls below the thermostat setting and switching it off once this set temperature has been reached Turning a room thermostat to a higher setting will not make the room heat up any faster How quickly the room heats up depends on the design of the heating system for example the size of boiler and radiators Neither does the setting affect how quickly the room cools down Turning a room thermostat to a lower setting will result in the room being controlled at a lower temperature a2. The recommended cable size is 1 0mm The receiver is double insulated and does not require an earth connection an earth connection block is provided on the backplate for terminating any cable earth conductors Earth continuity must be maintained and all bare earth conductors must be sleeved Ensure that no conductors are left protruding outside the central space enclosed by the backplate ASR ZW Receiver internal wiring diagram Internal 230V JS 50V COMM OFF ON The receiver has Voltage Free contacts A link between Live and terminal 2 is required for mains Voltage applications Two example circuit diagrams for typical boiler installations are shown opposite These diagrams are schematic and should be used for guidance only Please ensure that all installations comply with the current IEE regulations and the boiler manufacturer s installation instructions For reasons of space and clarity not every connection has been included and the diagrams have been simplified for instance some earth connections have been omitted Internal Electronics bhagdd 230V JS 50V COMM OFF 230V J 50V Boiler external control connections shown N Neutral L Live S Boiler switch output R Boiler switch return Typical combi boiler system with built in timer This diagram shows a typical receiver and combination boiler installation where the external boiler control is connected via switch
3. LO D Q HCL 6 IVERSAL BACKPLATE lf og vs The wall plate should be fitted with the retaining screws located at the bottom and in a position which allows a total clearance of at least 50mm around the ASR ZW receiver Lr Hi eli Direct Wall Mounting Offer the plate to the wall in the position where the ASR 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 Wall Box Mounting The wall plate may be fitted directly on to a single gang flush wiring box complying with BS4662 using two M3 5 screws The receiver is suitable for mounting on a flat surface only it is not suitable for mounting on an unearthed metal surface Electrical Connections WARNING ISOLATE THE MAINS SUPPLY BEFORE COMMENCING INSTALLATION As the HRT4 ZW is a wireless product with no electrical connections all electrical wiring will be made to the ASR ZW receiver All necessary electrical connections should now be made Flush wiring can enter from the rear through the aperture in the backplate The mains supply terminals are intended to be connected to the supply by means of fixed wiring The receiver is mains powered and requires a 3 Amp fused spur
4. and the temperature should return in the display 8 Now check the receiver responds to the thermostat on and off commands by increasing and decreasing the temperature settings until it switches accordingly N B There is a half second delay in switching On and Off on receipt of the command 9 The Z Wave communication link is now successfully established Under normal circumstances the HRT4 ZW thermostat and ASR ZW receiver will be paired easily by following 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 1A Only used if L is displayed instead of I 1 Turn the dial of the HRT4 ZW until the letter P appears in the display 2 Press the dial twice 3 A second P should appear in the display which now shows PP 4 Turn the dial until the letter I appears in the display and return to the main instruction Stage 2 Only used if the above procedure does not establish a successful communication link 1 Turn the dial until the letter P appears in the display 2 Press the dial twice and PP should appear in the display 3 Now turn the dial until letter E appears in the display 5 Press and hold the network button on the ASR ZW receiver until it starts to flash 4 Press the dial once and the display should flash 6 Turn the dial until the letter I appears in the
5. commissioned when the installation took place Alternatively see the Z Wave pairing instructions on page 10 Further information on how the thermostat operates is contained in the Explanation for householders that precedes this section 4 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 When the batteries are nearing the end of their life a low Batteries should be battery symbol will appear in the display and the batteries changed immediately should be changed within a few days If the batteries are not changed at this point eventually a LO battery message flashes intermittently in the display and if this happens the Low battery symbo batteries should be changed immediately appears first when the batteries are nearing the end of their life 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 Remove the old batteries and replace them with two new AAA size alkaline batteries ensuring that they are fitted correctly as indicated by AAN the terminal markings in the battery compartments fy gt 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 posi
6. ce comprises of a thermostat the HRT4 ZW and its receiver unit the ASR ZW Pairing the devices on site ensures reliable communication Follow these steps to ensure that the HRT4 ZW thermostat will communicate satisfactorily with it s receiver this is best carried out with the HRT4 ZW Thermostat held nearby the powered ASR ZW receiver Stage 1 1 Set the number 1 DIL switch on the back of the HRT4 ZW thermostat to the On Up position and the display on the HRT4 ZW will change to show the letter I If the letter L appears carry out stage 1A opposite S SWITCH CONFIGURATION HRT4 ZW Ho ll jej 0 00 cIcIg A O O m m m oloo L N C o m 2 Power up the ASR ZW receiver unit SGOW YSTIVLSNI L 3 The network LED on the ASR ZW receiver should be flashing 4 Press the dial on the front of the HRT4 ZW thermostat once so that the I in the display flashes 5 Press and hold the network button on the ASR ZW receiver until the On indicator flashes green before the Off indicator becomes solid red 6 After a few seconds the radio mast symbol g will appear in the display along with the letters IP Network LED Network 7 Reset the number 1 DIL switch on the back of the HRT4 ZW putton to the Off position
7. display and return to the main instruction Thermostat specifications Power supply Temperature accuracy Transmitter frequency Dimensions Pollution control Design standard Temperature range Rated Impulse voltage Enclosure protection Operating temperature range Double Insulated Case material Receiver specification Power Supply Contact type Contact rating Operating temperature range Double Insulated Rated Impulse voltage Pollution control Enclosure protection Case material Dimensions HRT4 ZW 2 x AAA alkaline batteries t O5 868MHZ s6mm x 86mm X36 25MM Degree2 EN60730 2 9 Dp a Cat 1 1500v IP30 40 C Thermoplastic flame retardant ASR ZW 230V AC 50HZ Micro disconnection Voltage free 3 1 Amps 230v AC 0 40 C Cat 1 1500v Degree IP30 Thermoplastic flame retardant s6mm x 86MM X 36 25MM HORSTMANN Horstmann Controls South Bristol Business Park Roman Farm Road Bristol BS4 1UP E mail sales horstmann co uk Web site www horstmann co uk ps4 C Leaflet number P83852 Issue 1
8. ing terminals a link may have to be removed on the boiler switching control terminals Mains supplies to both the receiver and the boiler are omitted for clarity Please consult the boiler manufacturers installation handbook before commencing any installation work Internal Electronics Switch live from programmer or mains feed from wiring centre fused 3 Amp 2 Port spring return motorised valve with auxiliary end switch To Pump and Boiler Zone Heating control basic layout This diagram shows a receiver used in a conventional fully pumped system using a 2 port spring return zone valve with auxiliary switch to control the pump and boiler Please note hot water control will need to be controlled by the use of a programmer or time switch 230V J 50V Mains supplies to both the receiver and the boiler are omitted for clarity Please consult the boiler manufacturers installation handbook before commencing any installation work 7 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 x 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 P
9. l 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 the required temperature setting and can be adjusted in increments of 1 C 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 To adjust the required temperature setting turn the dial anti clockwise to decrease it and clockwise to increase it When the thermostat is in the call for heat condition a flame symbol will appear in the display The aerial symbol complete with radio wave symbols in the display of the HRT4 ZW thermostat indicates that it is communicating satisfactorily with the ASR ZW receiver 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 switch If this has no effect please see Z Wave pairing instructions on page 10 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 ASR ZW receiver In this case you may wish to contact the Installer as the indication is that the product has not been
10. lder before handing over these User Instructions DIL switch settings TPI temperature control software Thermostats using TPI Time Proportional Integral control algorithms will reduce the temperature swing that normally occurs when using traditional bellows or thermally operated thermostats As a consequence a TPI regulating thermostat will maintain the comfort level 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 condensing mode more S SWITCH CONFIGURATION HRT4 ZW consistently compared to older types of thermostat A A A i i i i ae e DIL switch numbers 7 and 8 should be set as diagram opposite 3 gi y 53 Z Z Z Z Z ry D e For Gas boilers set the TPI setting to 6 cycles per hour G O 6 0 6 0 i M Va Default setting elelelelelela n rTP eh 58888 gl a e For Oil boilers set the TPI setting to 3 cycles per hour i aed z 2 e For Electric heating set the TPI setting to 12 cycles per hour M Switch positions for different TPI settings Instructions for pairing the HRT4 ZW room thermostat with the ASR ZW receiver The HRT4 ZW uses the latest Z Wave wireless communication technology to give a reliable wireless link that should not suffer from interference from other nearby devices The devi
11. lease see Z Wave pairing instructions on page 10 Avoid installing the thermostat against or behind any large metal surfaces which could interfere with the radio signals to and from the ASR ZW 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 p io wie Before fixing the wall plate in position check to see that s the thermostat and Receiver are still able to communicate satisfactorily by turning the thermostat temperature up and i down to switch the ASR ZW receiver on and off LY Offer the plate to the wall in the position where the ASR ZW ra 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 househo
12. nd saves energy The heating system will not work if a time switch or programmer has switched it off The way to set and use your room thermostat is to find the lowest temperature setting that you are comfortable with and then leave it alone to do its job The best way to do this is to set the room thermostat to a low temperature say 18 C and then turn it up by one degree each day until you are comfortable with the temperature You won t have to adjust the thermostat further Any adjustment above this setting will waste energy and cost you more money If your heating system is a boiler with radiators there will usually be only one room thermostat to control the whole house But you can have different temperatures in individual rooms by installing thermostatic radiator valves TRVS on individual radiators If you don t have TRVs you should choose a temperature that is reasonable for the whole house If you do have TRVs you can choose a slightly higher setting to make sure that even the coldest room is comfortable then prevent any overheating in other rooms by adjusting the TRVs Room thermostats need a free flow of air to sense the temperature so they must not be covered by curtains or blocked by furniture Nearby electric fires televisions wall or table lamps may prevent the thermostat from working properly The Horstmann HRT4 ZW thermostat uses the latest control technology to provide extremely accurate temperature control which wil
13. tion 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 the batteries responsibly X ASR ZW receiver unit The ASR ZW receiver unit receives the Z Wave radio Signals from the HRT4 ZW room thermostat ed In the unlikely event of a communication failure it is eich possible to override the system and switch On and Off using the On Off buttons on the ASR ZW receiver as a local override If the override is used to override the HRT4 ZW thermostat when it is functioning correctly then the override will be cancelled by the next switching operation of the thermostat and normal operation will be resumed In any case with no further intervention normal operation will be restored within one hour of the override being operated Installation Instructions Installing the ASR ZW Receiver The ASR ZW receiver should be located as near as is practical to the boiler or zone valve to be controlled as well as a convenient mains electricity supply To remove the wall plate from the ASR ZW undo the two retaining screws located on the underside the wall plate should now be easily removed Once the wall plate has been removed from the packaging please ensure the ASR ZW is re sealed to prevent damage from dust debris etc al aS o a Die HO Tole _10
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