IM 660-4 MicroTech® 2000 Unit Controller for Water Source Heat
Contents
1. eese een een eene nennen 20 3 IM 660 4 Revision History IM 660 4 June 2012 updates for new hardware design Reference Documents Updated Daikin logo and associated references Drawing and replacement part number Number Company Title Source IM 407 Daikin Vertical WSHP 007 to 060 www DaikinApplied com IM 439 Daikin Large Vertical WSHP 070 to 290 www DaikinApplied com IM 447 Daikin Console Units WSHP www DaikinApplied com IM 494 Daikin WMH CWH 007 to 019 www DaikinApplied com IM 526 Daikin Horizontal WSHP 007 to 120 www DaikinApplied com IM 544 Daikin CCH HWH 006 to 060 www DaikinApplied com IM 656 Daikin Horizontal WSHP 019 to 060 www DaikinApplied com IM 742 Daikin Enfinity Horizontal WSHP 007 to 060 www DaikinApplied com IM 778 Daikin Enfinity Vertical WSHP 007 to 060 www DaikinApplied com IM 660 Daikin MicroTech 2000 WSHP Unit Controller Installation www DaikinApplied com Manual ED 15054 Daikin MicroTech 2000 WSHP Protocol Document www DaikinApplied com 8000_51 LonMark Interoperability LonMark Functional Profile Heat Pump www lonmark org Association Limited Warranty Consult your local Daikin epresentative for warranty details Refer to Form 933 43285Y To find your local Daikin Representative go to www DaikinApplied com Notice 2013 Daikin Applied Minneapolis MN All rights reserved throughout the world Daikin reserves the2. e Compressor management on off differential minimum off time minimum on time Configurable Relay Outputs The MicroTech 2000 WSHP controller provides one relay output that can be configured for the following four options e Boilerless system skin heat relay e Motorized water valve relay e Fresh air damper relay e Timed output relay LONWORKS only These options can affect installation requirements and unit control If more than one configurable relay output option is required the MicroTech 2000 WSHP auxiliary board is required to provide the three additional outputs The MicroTech 2000 WSHP auxiliary board typically is factory mounted only in 2 compressor circuit WSHP units Only three relay outputs are available for use as configurable relay outputs in 2 circuit WSHP units See Figures 4 7 for terminal locations and outputs All configurable relay outputs are set to no function by default and must be field configured A description of the four relay options follows Boilerless System Auxiliary Heat Relay LONWORKS only The relay receives loop water temperature input from the MicroTech Loop Water Controller through the gateway panel and provides relay output to electric heat on a call for heat after loop temperature falls 15 IM 660 4 Boilerless System Auxiliary Heat Relay LONMARK only The relay output energizes when the space temperature reaches the heating set point and de energizes when the space temperature exc
3. Installation Manual Group Controls Part Number IM 660 Date June 2012 Supersedes IM 660 3 MicroTech 2000 Water Source Heat Pump Unit Controller NOTICE Use this manual to physically install the unit controller and connect it to your network Use the appropriate Daikin Engineering Data ED known as the Protocol Information document to integrate the unit into your network The Protocol Information document contains addressing details and a list of the data points available to the network See the Reference Documents section of this manual for Protocol Information document numbers MicroTech 2000 control integration literature is available at www DaikinApplied com P DAIKIN Table of Contents Table Of ConteNiS 2 PISUIeS id ahi 3 Revision Historia ana pita 4 Reference Documents s poe a e deii i e e prede HERR qe reed 4 Limited Warranty ed ee ite aet i e o ERU dme a UR M deseen evite d 4 General Information eeeeeeee a nenas 5 jb ros ceeds 5 1 LONMARK 3 3 Certified Unit Controllers essere 6 Component D ta 4 co fe a E RAE E E IRE CH 6 Unit Controller MictOptOCesSSOE 2 itr ente terere te pe er ete ie eir Re Eee gd 6 Yellow Status EBD ent o e RE nur i ii 6 Service PIN i eee esee eda i eni dae esi d e een s 6 Red Setyice LED Li IA Hee eg 6 Temperature Sensing tige Re ei
4. 22 Digital Outputs 2 22 iR i itle SO e ocu ea ee EROR ERE ute ca Madea cg bes 22 Input Output Table Ree na e Aber OR I Re d 23 General Troubleshooting estet iii 24 Microprocessor Problems sis 5 tese etd e eed Ne ec reri ete ride eee ende 24 Power Supply Problems m ttt exe RR RR P irc Ly ce ds 24 Erroneous Temperature Readings esses eene nennen nnne entente enne nnne ns 24 Digital Input Faults ito irt ede ttt e ia et eed i e pe TO PR ere IRR 25 Brownout Fault 5 o ee n e e DER eet 26 Parts Tist ce edet dada ansiedad 26 Field Installed Kits gebe deemed en pde ed 26 Figure 1 MicroTech 2000 Unit Controller Major Components esee 7 Figure 2 MicroTech 2000 Auxiliary Controller Major Components eene 8 Figure 3 Inserting the MicroTech 2000 Board into the Control Panel sess 10 Figure 4 First Control Signal Outpu t ente teen epi pied p Oei ns 16 Figure 5 Second Control Signal Output os a E E een een nennen rennes 16 Figure 6 Third Control Signal Output eese nere een een een en nren rennen 17 Figure 7 Fourth Control Signal Output essere eene een enne nennen 17 Figure 8 Wall Mounted Temperature Sensor Wiring eese eene eene 18 Figure 9 Maximum Wire Length to Sensors eese enne een eene nennen 18 Figure 10 Alarm and Fault Code Summary
5. 34 0 6808 93 11 5 845 12 35 0 6531 95 10 5 534 14 36 0 6267 97 9 5 242 16 37 0 6015 99 8 4 967 18 38 0 5774 100 7 4 708 19 39 0 5545 102 6 4 464 21 40 0 5326 104 5 4 234 23 41 0 5116 106 4 4 017 25 42 0 4916 108 3 3 812 27 43 0 4725 109 2 3 620 28 44 0 4543 111 1 3 438 30 45 0 4368 113 0 3 266 32 46 0 4201 115 1 3 104 34 47 0 4041 117 2 2 951 36 48 0 3888 118 3 2 806 37 49 0 3742 120 4 2 669 39 50 0 3602 122 5 2 540 41 51 0 3468 124 6 2 418 43 52 0 3340 126 7 2 302 45 53 0 3217 127 8 2 192 46 54 0 3099 129 9 2 089 48 55 0 2987 131 10 1 990 50 56 0 2878 133 11 1 897 52 57 0 2775 135 12 1 809 54 58 0 2675 136 13 1 726 55 59 0 2580 138 14 1 647 57 60 0 2489 140 15 1 571 59 61 0 2401 142 16 1 500 61 62 0 2317 144 17 1 432 63 63 0 2236 145 18 1 368 64 64 0 2158 147 19 1 307 66 65 0 2084 149 20 1 249 68 66 0 2012 151 21 1 194 70 67 0 1944 153 22 1 142 72 68 0 1878 154 23 1 092 73 69 0 1814 156 24 1 045 75 70 0 1753 158 25 1 000 77 71 0 1695 160 26 0 9572 79 72 0 1638 162 27 0 9165 81 73 0 1584 163 Digital Input Faults A digital input fault usually is caused by high pressure low pressure or low temperature alarm conditions resulting from mechanical problems in the water source heat pump It also can be caused by a problem in the digital input circuit Below is a procedure to use to check for problems in the digital input circuit If the probable cause of the fault is found using this procedure attempt to c
6. E p MT Gon 24 VAC ise ps pilot duty relay i by others e Use contacts as needed for option Communications Failure LONMARK 3 3 If the network link fails for any reason for example communication is lost between the WSHP and a networked room sensor or the WSHP and the BAS the affected WSHP controller remains operational The status of its heating and cooling set points as well as its occupancy and other network adjustable settings depends upon how the BAS is implementing the heartbeat functionality Refer to ED 15054 available on www DaikinApplied com for further details Communications Failure LONWORKS If the network communication link fails for any reason the affected WSHP controller remains operational Its operating mode will be the last received over the network until communication is restored or power is cycled on the unit If power is cycled the WSHP defaults to Occupied mode Its minimum position heating and cooling set points will be those last received over the network regardless of whether power is cycled Wall Mounted Sensor There are four optional wall sensor packages available All include a remote status LED and tenant override button Set point adjustment and thermometer are optional features The wall mounted sensor must be field installed and field wired to the water source heat pump Terminal Board 1 provides the connections for all room temperature sensor field wiring R
7. right to change any information contained herein without prior notice The user is responsible for determining whether this product is appropriate for his or her application The following are trademarks or registered trademarks of their respective companies Echelon LonWorks LonMark and LonTalk from Echelon Corporation Windows from Microsoft Corporation Daikin and MicroTech 2000 IM 660 4 General Information Description This manual provides information about the MicroTech 2000 Water Source Heat Pump WSHP unit controller with LONMARK or LONWORKS communication capability The manual describes the controller s components input output configurations and service procedures For network installation or commissioning instructions for new projects refer to the protocol information document ED 15054 For general information on a particular WSHP unit refer to the model specific installation manual see Reference Documents section DANGER Dangers indicate a hazardous situation that will result in death or serious injury if not avoided A WARNING Warnings indicate potentially hazardous situations which can result in property damage severe personal injury or death if not avoided A CAUTION Cautions indicate potentially hazardous situations which can result in personal injury or equipment damage if not avoided Z WARNING Electric shock hazard Can cause personal injury or equipment damage Th
8. TB 1 4 Room sensor common J2 10 TB 1 5 LonTalk connection J2 11 TB 1 6 LonTalk connection J2 12 TB 1 7 24 VAC common J41 24 V ground J4 2 24 VAC J4 3 Fan relay output J4 4 Fan relay common J4 5 Compressor contactor output J4 6 Compressor contactor common J4 7 Reversing valve solenoid output J4 8 Reversing valve solenoid common J4 9 High pressure switch signal J4 10 Low pressure switch source J4 11 Low pressure switch signal J4 12 Low temperature switch signal J4 13 Low temperature switch source J4 14 Condensate overflow sensor J5 8 Leaving water temperature sensor input J5 9 Leaving water temperature sensor common J5 10 Discharge air temperature sensor input J5 11 Discharge air temperature sensor common J6 1 7 Auxiliary module connections 23 IM 660 4 General Troubleshooting Microprocessor Problems The status LED indications can aid in WSHP controller diagnostics Approximately 40 seconds after power is applied to the WSHP the status LED should illuminate see Figure 1 and Table 1 If not either there is a software problem or the WSHP controller is defective Power Supply Problems The WSHP controller requires a 24 VAC power supply It is connected to the board at the section labeled 24V GND and 24 VAC terminals J41 and J42 Refer to the unit wiring diagram If you suspect a problem with the WSHP controller power chec
9. ater source heat pump is sensing low voltage levels It is designed to protect the compressor and contactors from low line voltage or brownout conditions The controller is programmed with a brownout set point that corresponds to 82 of the water source heat pump s nameplate line voltage value If the water source heat pump controller senses a voltage level less than its set point for more than 1 second it triggers the brownout fault The fault resets automatically when the sensed voltage remains at or above a level corresponding to 90 of the nameplate value for a period of one second For information on troubleshooting this alarm see Service and Troubleshooting section Symptoms as applicable e The compressor immediately de energizes Change Filter Notification Network Units Only The Change Filter notification indicates that the fan has operated longer than the set number of hours Typically this warning is used to alert the building operator to replace the filter To clear the notification reset the filter timer at the network PC Symptoms e An alarm message identifying the water source heat pump network address and time of occurrence is sent to the network printer 21 IM 660 4 Service and Troubleshooting The following section defines the inputs and outputs available for the MicroTech 2000 WSHP unit controller to assist with field service and troubleshooting efforts It also identifies common problems and so
10. e second part is the Subnet ID that specifies a collection of up to 127 devices that are on a single channel or a set of channels connected by repeaters There may be up to 255 subnets in a domain The third part is the Node ID that identifies an individual device within the subnet A group is a logical collection of devices within a domain Groups are assembled with regard for their physical location in the domain There may be up to 256 groups in a domain A group address is the address that identifies all devices of the group There may be any number of devices in a group when unacknowledged messaging is used Groups are limited to 64 devices if acknowledged messaging is used A broadcast address identifies all devices within a subnet or domain 12 IM 660 4 Refer to Echelon Corporation s Transceiver User s Guide for details regarding acceptable configurations cabling requirements terminations and other requirements for proper connection of the unit to the LONWORKS network www echelon org Commissioning the MicroTech 2000 LonMark Unit Controller A WARNING Electric shock hazard Can cause personal injury or equipment damage This equipment must be properly grounded Connections and service to the Unit Controller must be performed only by personnel knowledgeable in the operation of the equipment being controlled Once the MicroTech 2000 LonMark WSHP unit controller is installed properly in the control panel it can be integrated i
11. ech 2000 WSHP Unit Controller Data relating to the water source heat pump controller configuration and characteristics are stored at the factory when each unit is built and tested If a WSHP controller must be replaced 1ts unit specific software described previously must be loaded into the replacement controller at the factory To do this the following information is required e Full model number e Serial number e Software version of application LONMARK or LONWORKS loaded in the controller The unit model and serial numbers are listed on the unit data plate The date code and software version of code are printed on the MicroTech 2000 unit controller adhesive backed label This information must be included with the replacement WSHP controller part order The following steps describe how to field install a new MicroTech 2000 unit controller Tools Required e Pan head screwdriver e Self retaining nylon spacers included with kit e 6 pan head screws included with kit DANGER The terminals on the Water Source Heat Pump unit controller are high voltage Disconnect power to avoid electrical shock potential which will result in death or serious injury if not avoided 10 IM 660 4 AS v Disconnect power from the unit controller Unplug the wired female connectors from the board mounted male plugs Remove the screws from the spacers using a pan head screwdriver Remove the existing unit controller by removing the nylon
12. eeds the heating set point plus a configurable differential set point defaulted to 3 F Motorized Valve Relay The relay provides output to the motorized valve to shut off water through the unit when the compressor is not operating Fresh Air Damper Relay The relay provides output to the open damper whenever the fan is operating in the occupied cycle Timed Output Relay LONWORKS only The relay provides output to an auxiliary load to control its operation based on a specific time schedule different from that of the heat pump unit Figure 4 First Control Signal Output Terminal boards located externally on the WSHP chassis Olelslels lsi ejt tule tc 24 VAC IMPORTANT To use onboard 24 VAC pilot duty relay change the jumper PF1 on the by others i MicroTech 2000 controller la O A from factory default pins 1 and 2 to pins 2 and 3 ph Figure 5 Second Control Signal Output Terminal located on MicroTech 2000 auxilliary board J6 pilot duty relay by others Use contacts as needed for option 16 IM 660 4 Figure 6 Third Control Signal Output Terminal located on MicroTech 2000 auxilliary board pee A J7 by others UJ pilot duty relay by others ph Use contacts as needed for option Figure 7 Fourth Control Signal Output Terminal located on MicroTech 2000 auxilliary board J10 i i by others
13. efer to the unit wiring diagrams Figures 8 and 9 below and IM 529 MicroTech Room Temperature Sensors for information on wall sensor package installation 17 IM 660 4 Figure 8 Wall Mounted Temperature Sensor Wiring WSHP Wall sensor Sensor LED TB1 1 i Red 0 Tenant override TB1 2 b 4 Green e Sensor input TB1 3 White o Sensor common TB1 4 4 4n Black 0 Figure 9 Maximum Wire Length to Sensors Gauge Length ft 18 AWG 625 20 AWG 380 22 AWG 260 Remote Room Set Point Adjustment The remote set point adjustment potentiometer allows the room set point to be adjusted up or down by as much as 3 F 1 7 C It is available with several of the optional wall sensor packages Tenant Override A wall mounted tenant override switch is standard on all MicroTech 2000 Room Temperature Sensors Pressing and holding the tenant override button for 1 0 to 6 0 seconds puts the unit into tenant override mode for a set time period default 60 minutes Press the tenant override button again for 1 0 to 6 0 seconds and the unit returns to unoccupied mode by default A separate configuration property is available that allows users to extend the tenant override period for up to 60 minutes with a second button press Except for the fact that it is temporary the tenant overr
14. ext file with the extension XIF is required along with LONWORKS network management tool so that you can design and configure the network prior to commissioning the unit controller The NXE file contains the application image that is downloaded into the MicroTech 2000 unit controller The XIF and NXE files are available at www lonmark org Refer to MicroTech 2000 WSHP Unit Controller Protocol Information ED 15054 for additional details Commissioning the MicroTech 2000 LonWorks Unit Controller Z WARNING Electric shock hazard Can cause personal injury or equipment damage This equipment must be properly grounded Connections and service to the Unit Controller must be performed only by personnel knowledgeable in the operation of the equipment being controlled Once the MicroTech 2000 LonWorks WSHP unit controller is installed properly in the control panel it can be integrated into an existing network of MicroTech 2000 WSHP units that are connected to a MicroTech gateway panel MCG 13 IM 660 4 Tools The following tools may be required to properly commission a MicroTech 2000 LonWorks unit controller PC equipped with Monitor software for Lon Works network integration to a BAS from an existing MicroTech network Program specific sequence of operation bulletin MicroTech Monitor Program User s Manual if PC is used Follow the steps below to enable WSHP communication to a MicroTech network 1 Perform Field W
15. fies the device during network commissioning Red Service LED A red on board service LED provides diagnostics by indicating the Neuron chip status The red LED indicates the Neuron chip status as shown in Table 2 below 6 IM 660 4 Temperature Sensing The MicroTech 2000 WSHP unit controller uses negative temperature coefficient NTC thermistors for temperature sensing A thermistor chart which provides voltage to temperature and resistance to temperature conversion data is included in Table 9 The discharge air temperature sensor is located at Status LED Service LED Service Pin Button the inlet to the fan The leaving water temperature sensor is located in the leaving water line Table 1 Status LED Description Status LED status Mode On continually Occupied Occupied Load Shed On 0 5 sec Off 5 5 sec Unoccupied On 5 5 sec Off 0 5 sec Tenant Override Override Load Shed On 0 1 sec Off 0 1 sec Alarm Condition Condensate Overflow Brownout Compressor Fault Service LED status Mode Off continually Normal The Neuron has an application and is configured On continually The Neuron does not have an application or is damaged Downloading an application may correct this Blink slowly The Neuron has an application but is unconfigured Table 2 Service LED Description Figure 1 MicroTech 2000 Unit Controller Major Components FT X1 Transcei
16. g properly Go on to step 2 2 Ifthe voltage remains above 21 6 VAC for 1 second but the fault does not reset the WSHP controller is defective 3 Check the primary and secondary voltages of the power supply transformers 4 Check for faulty wiring or connections throughout the power supply circuit Please contact the WSHP technical support group at 315 282 6240 for additional assistance if necessary Parts List MicroTech 2000 unit controller boards are only available as field installed kit through Daikin Parts at 763 553 5465 or parts daikinapplied com Before placing an order identify the following 1 The version of software i e LonMark or LonWorks required in order to verify that the correct part number as shown below is referenced in the order 2 If the order is for a replacement board verify if an auxiliary board is attached to the controller If so a new auxiliary board will need to be ordered along with each unit controller as a matching set 3 If additional assistance is needed contact the WSHP technical support group at 315 282 6240 Field Installed Kits MicroTech 2000 WSHP Unit Controller LonMark 3 3 250808301 MicroTech 2000 WSHP Unit Controller LonWorks 250808401 MicroTech 2000 WSHP Auxiliary Board 073312721 26 IM 660 4 This document contains the most current product information as of this printing For the most current product information please go to www DaikinApplied com All equip
17. ide operating mode is identical to the occupied operating mode LONWORKS Only Pressing and holding the tenant override button for at least 6 seconds but not more than 10 seconds activates the network query address mode indicating the unit address in question at the MicroTech gateway panel LONWORKS Only Pressing and holding the tenant override button more than 10 seconds activates the network self configure mode requesting the assignment of the next sequential address from the MCG MicroTech gateway panel LONMARK 3 3 Only Similar to pressing the service pin pressing and holding the tenant override button for more than 10 seconds causes the Neuron chip to broadcast a message over the LONWORKS network containing its unique 48 bit Neuron ID This is useful during network commissioning 18 IM 660 4 Diagnostic Services The following section provides a description of the diagnostic services available for the MicroTech 2000 WSHP unit controller including how to verify unit communication alarm management and fault conditions Unit Identification Wink Command The unit identification function allows verification of an individual unit network address without opening the unit access panels The compressor shuts off during this period and the minimum off timer must expire before the compressor is allowed to run again Upon receiving a wink command from a network management node the heat pump exhibits the following ide
18. if not avoided Tools Required e Pan head screwdriver e Self retaining nylon spacers included with kit e 6 pan head screws included with kit Installation Procedure 1 Disconnect power from the unit controller 2 Insert the tapered tabbed portion of the board into the matching slot that has been cut into the sheet metal at the rear of the control box cabinet see Figure 3 Secure the board at the front end by means of a self retaining nylon spacer provided Insert 6 pan head screws provided through the spacers and tighten them using the screwdriver Plug the female connectors to the board mounted male plugs Re apply power to the unit controller zu QN SUA Be Check the status LED and operating mode changeover devices The Status LED should illuminate 30 to 40 seconds after power up see Figure 1 e Ifa wall sensor package is used the remote status LED should also illuminate Check the Power LED for auxiliary board if present See Figure 2 8 Verify that WSHP is functioning according to the specified sequence of operation see OM 128 for details 9 IM 660 4 Figure 3 Inserting the MicroTech 2000 Board into the Control Panel CN 5 o c 1 gt 2 gt 8 xx o E E Rear E 3 Front 5 1 3 a ic 5 o oO o I gt 8 S fos Le 7 L ett Top View Side View Replacing a MicroT
19. iring Check A unit wiring diagram is provided with each unit along with a model specific Installation and Maintenance Guide Before the commissioning process begins thoroughly check the electrical installation Verify Wall Sensor Packages a Check that the cable is twisted and shielded with drain wire Belden 8729 or equivalent Check that four conductors are available b Check that the conductors are terminated at the unit and at the wall sensor package to screw terminal board 1 in accordance with the field wiring diagram on which terminals are clearly labeled Terminal 4 is used for both the room sensor common and the shield wire c Check the cable length between the wall sensor package and its water source heat pump controller Confirm Network Communication to MicroTech Gateway Panel if applicable a Check that the cable is a twisted unshielded pair of copper strand conductors b Check that the conductors are terminated properly c Check that the conductors are terminated at the MicroTech gateway panel according to the field wiring diagram supplied with the panel Note setpoint values before any changes are made over the network The WSHP setpoint values are held in memory and can be modified only over the MicroTech network Apply power to the unit Turn the main power switch to ON Check the Status LED and operating mode changeover devices The status LED should illuminate 30 to 40 seconds after power up a Ifa wal
20. is equipment must be properly grounded Connections and service to the MicroTech III Chiller Unit Controller must be performed only by personnel knowledgeable in the operation of the equipment being controlled A CAUTION Static sensitive components Can cause equipment damage Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work Never unplug cables circuit board terminal blocks or power plugs while power is applied to the panel NOTICE This equipment generates uses and can radiate radio frequency energy and if not installed and used i accordance with this instruction manual may cause interference to radio communications It has been teste and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense Daikin disclaims any liability resulting from any interference or for the correction thereof The MicroTech 2000 WSHP unit controller provides control of water source heat pumps The controller enables the mode of operation monitors the water and air temperatures and indicates fault co
21. ive electronic components that may be damaged by electrostatic discharge from your hands Before you handle a communications module you need to touch a grounded object such as the metal enclosure in order to discharge the electrostatic potential in your bogy Connecting to the Network Each MicroTech 2000 unit controller is equipped with an FT X1 or FTT 10A transceiver for network communications This transceiver allows for 1 free topology network wiring schemes using twisted pair unshielded cable and 2 polarity insensitive connections at each node Free topology segments require termination for proper transmission performance The MicroTech 2000 unit controller with the LonMark 3 3 application conforms to the Water Source Heat Pump with Space Comfort Control SCC profile as defined by the LonMark organization The required integration files XIF NXE are available from www lonmark org see External Interface File XIF and NXE Files section below for details LoNWoRks Network Addressing Every Neuron Chip has a unique 48 bit Neuron ID or physical address This address is generally used only at initial installation or for diagnostic purposes For normal network operation a device address is used Device addresses are defined at the time of network configuration All device addresses have three parts The first part is the Domain ID designating the domain Devices must be in the same domain in order to communicate with each other Th
22. k the following 1 Verify that the main power switch is at ON 2 Check the voltage at the secondary of the transformer It should be approximately 24 VAC load dependent Erroneous Temperature Readings If you suspect that the WSHP controller is operating using erroneous temperature data check the sensors using the following procedure 1 Measure the temperature at the suspect sensor using an accurate thermometer 2 Determine the sensor s analog input number Refer to the unit wiring diagram or to the input output table Table 6 3 Remove the connector from its WSHP controller terminals and measure the resistance of the sensor through the sensor connections 4 Using the Thermistor chart Table 7 compare this value to the measured temperature If the measured resistance and temperature match the WSHP controller may require factory service or it may be defective 6 If the measured resistance and temperature do not match either there is a wiring problem or the sensor is defective Check the wiring connection and the sensor circuit wiring for defects 24 IM 660 4 Table 7 Thermistor Chart e 10 k ohm F e 10 k ohm F 18 8 654 0 28 0 8777 82 17 8 173 1 29 0 8408 84 16 7 722 3 30 0 8056 86 15 7 298 5 31 0 7721 88 14 6 900 7 32 0 7402 90 13 6 526 9 33 0 7098 91 12 6 175 10
23. l sensor package is used the remote status LED should also illuminate Verify that the WSHP is functioning according to its sequence of operation see OM 128 for details Refer to the MicroTech Communications Gateway MCG Installation Manual IM 661 for further commissioning details The service pin must be pressed at a specific time depending on which of the four commissioning methods is used IM 660 4 MicroTech 2000 Network Parameters Control sequencing stop start equipment protection monitoring and fault resets can be accomplished through a network connection The following unique values and parameters can be accessed for each unit refer to Protocol Document ED15054 for more information e Return air and discharge air temperatures e Compressor fan and reversing valve status e High pressure low temperature brownout and drain pan status e Occupied and unoccupied heat and cool set points e Auto manual and occupied unoccupied fan control e Mode fault system schedule and set point operation e Compressor starts and fan run hours e Load shed level LONWORKS only e Tenant override status In addition the following unique operation and maintenance parameters can display for each unit e Leaving water temperature e Return air temperature set point wall sensor adjustment e Adaptive optimal start LONWORKS only e Occupied unoccupied on cycle fan mode e Room temperature warning e Filter changes from fan hours
24. lear the fault by cycling power to the WSHP If the 25 IM 660 4 probable cause of the fault is not found using this procedure assume that mechanical problems exist and have a qualified technician service the unit before attempting to reset the WSHP Controller 1 Check the voltage at the secondary of transformer it should be approximately 24 VAC 2 Determine the switch s digital input number Refer to the unit wiring diagram 3 Check the wiring and connections throughout the digital input circuit 4 Measure the resistance through the switch contacts with at least one wire disconnected The switches normally are closed Brownout Fault The WSHP controller senses the AC voltage at the power input section terminals J41 and J42 see unit wiring diagram If the voltage at these terminals is less than 19 68 VAC for at least 1 second the brownout fault occurs The fault automatically clears if the voltage at the terminals remains greater than 21 6 VAC for at least 1 second If a brownout fault occurs check the line voltage to the water source heat pump If it is less than 82 of the nameplate value contact the power company If the line voltage remains greater than 90 of the nameplate value for more than 1 second but the fault does not reset perform the following procedure 1 Measure the voltage between terminals J41 and J42 on the WSHP controller If the voltage is low or fluctuates around 19 68 VAC the WSHP controller is functionin
25. ller was calling for the compressor to run The low temperature switch opens when the temperature falls below its set point model and size dependent For information on troubleshooting digital input faults see the Service and Troubleshooting section Symptoms e Unit changes to cooling for 60 seconds for coil defrost e After 60 seconds in cooling the software immediately de energizes the compressor and fan e The software disables normal unit operation until the fault condition is manually corrected Low Pressure Faults The Low Pressure fault indicates that the low pressure switch input J4 11 sensed an open circuit while the controller was calling for the compressor to run The low pressure switch opens when the temperature falls below Troubleshooting section 20 IM 660 4 Symptoms e The compressor immediately de energizes e The software disables normal unit operation until the fault condition is manually corrected Condensate Overflow Fault The Condensate Overflow fault indicates that the condensate overflow sensor J4 14 sensed a grounded signal while the controller was calling for the compressor to run For information on troubleshooting analog input faults see the Service and Troubleshooting section Symptoms e The compressor immediately de energizes e The software disables normal unit operation until the fault condition is manually corrected Brownout Fault The Brownout fault indicates the w
26. lutions Inputs and Outputs Analog Inputs The MicroTech WSHP unit controller has six standard analog inputs The controller can sense temperatures in the range of 0 to 158 F 18 to 70 C See Table 3 Table 3 Analog Inputs Description Location Discharge air temp sensor Inlet to fan Leaving water temp sensor Leaving water line Condensate overflow sensor Condensate drain pan Brownout supply voltage sensor On board Room air temp sensor Remote basic wall sensor Tenant override set point adjust Remote wall sensor Digital Inputs The water source heat pump controller has four standard digital inputs Digital input conditioning includes RC filtering with a time constant of at least 4 7 milliseconds The base module provides additional filtering using software filtering techniques See Table 4 The digital inputs sense the presence or absence of an external 24 VAC 20 power source with a minimum of 10 mA AC current flowing through the following isolated contacts Refer to the wiring diagram supplied with your unit for specific wiring details Table 4 Digital inputs Description Location Refrigerant high pressure N C HP switch Refrigerant low pressure N C LP switch Refrigerant low temp N C LT switch Remote start stop N O Remote switch Digital Outputs All digital outputs with the exception of the on board and off board status LEDs are capable of controlling elec
27. ment is sold pursuant to Daikin Standard Terms and Conditions of Sale and Limited Warranty 27 IM 660 4
28. nditions Each unit controller is loaded with the application software and is tested for effective operation of the MicroTech 2000 WSHP unit controller The MicroTech 2000 WSHP controller is capable of communicating to a building automation system BAS of your choice using LONWORKS technology al IM 660 4 Note There are two versions of LONWORKS communication available on the WSHP unit controller The LONWORKS software is downloaded at the factory so it is important to determine which version is required when placing the order for field installed MicroTech 2000 WSHP unit controller Please contact the WSHP technical support group at 315 282 6240 for assistance if necessary 1 LONMARK 3 3 Certified Unit Controllers MicroTech 2000 unit controllers with LONMARK application code are used with stand alone WSHPs or for units that are connected to a Building Automation System BAS For network integration information refer to the Protocol Information document ED 15054 2 LoNWorks LonTalk Unit Controllers MicroTech 2000 unit controllers with LONWORKS i e using the LonTalk protocol were designed prior to LonMark certification Use this application software only in existing systems where an existing MicroTech Communications Gateway MCG or MicroTech Communications Gateway for Open Protocol MCGOP panel is installed Component Data Unit Controller Microprocessor The MicroTech 2000 WSHP unit controller is a preprogrammed microproces
29. neesessnaeeesseeeeesns 17 Communications Failure LONWORKS 0 ccccccccesesscescesceseesecsscsecsecsecsaccaceseesecssesecsestassacesseaees 17 WalleMobnted Sensor 2e hr ia Guten ROO UE Pt 17 Remote Room Set Point Adjustment sees nennen nennen ren rennes nre 18 Tenant Override sede i 18 Diagnostic Services oorr lidad 19 Unit Identification Wink Command sssssssssssssseseee eene eene eene nennen nnne nnne nnn 19 Alarm Monitoring and Control a iee enne nnen n conc nano nennen nre 19 Clearing Faults 4 edi t E iqq p du i t 19 Alarm Fault Descriptions 2 so S Hte RE E OE Ure 19 High Pressure Fault eie eade d a ee esce d ea ber 20 Symptoms as applicable 3 2 S dee ode ria 20 Low Temperature Fault Remeras eia 20 SYMPTOMS e E 20 Low Press re Faults comida levied et glans tia 20 Symptoms 6o apatite daa etui a etae dne deerat 21 Condensate Overflow Fault 2 roihi e ee hr peer E itte 21 SYIMPlOMS s ie te E a Ro n E teta 21 Brownout Fault e o eR RD Dd Rae dane idi dated EH dae deri 21 Symptoms as applicable iii dre 21 Change Filter Notification Network Units Only esee nennen nee 21 SYMPTOMS RN 21 Service and Troubleshooting eeeeeeeseiseeeeeeeeeeee ennt crece 22 2 IM 660 4 Figures Inputs and Outputs ina lr 22 Analog IPUR ORNA EE ROV aa 22 DIS Inputs gti eR UR HIER I UR ERREUR UIT E Gre
30. ntification sequence status LED and fan sequences occur simultaneously Status LED Flashes on 0 5 sec off 0 5 sec for 15 seconds Fan The heat pump fan turns off for 5 seconds turns on for 5 seconds then off again for 5 seconds Alarm Monitoring and Control The water source heat pump controller is programmed to monitor the water source heat pump for specific alarm conditions that may occur on the various model types If an alarm condition exists and is detected by the controller a fault occurs The water source heat pump controller indicates that a fault has occurred at the status LED on board or remote and executes appropriate control actions for the alarm conditions During a fault condition the status LED flashes constantly on 0 1 second off 0 1 second until the fault is cleared Refer to the Service and Troubleshooting section for information on troubleshooting digital input faults Clearing Faults Before any fault can be cleared the alarm conditions that caused it must have returned to normal When the alarm conditions are gone a fault may be cleared either automatically or manually as follows An auto reset fault immediately clears whenever the alarm conditions that caused it disappear To clear a manual reset fault cycle power to the unit controller Note Investigate and eliminate the cause of a manual reset fault before placing the unit back into service Alarm Fault Descriptions Figure 10 below de
31. nto a Building Automation System BAS 1 Apply power to the unit Turn the main power switch to ON 2 Check the Status LED and operating mode changeover devices The status LED should illuminate 30 to 40 seconds after power up If a wall sensor package is used the remote status LED should also illuminate 4 Verify that the WSHP is functioning according to its sequence of operation see OM 128 for details 5 Press the service pin button on the unit controller see Figure 1 Doing so generates a service pin message Which is broadcast on the network and contains the Neuron ID and the program code identification of the node 6 Next use a LONWORKS network configuration tool such as Echelon LonMaker to map the device Neuron ID to the domain subnet node logical addressing scheme when it creates the network image the logical network addresses and connection information 7 Download XIF NXE files from www lonmark org See section directly below for additional details External Interface File XIF and NXE Files LONMARK guidelines specify exact documentation rules so that proprietary configuration tools are not required to commission and configure LONWORKS devices The MicroTech 2000 unit controller is self documenting so that any LONWORKS network management tool can obtain all the information needed over the network to connect it into the system and to configure and manage it An external interface file a specially formatted PC t
32. scribes the alarm faults how they are triggered the factory settings that trigger them and how they are reset A detailed discussion of each follows 19 IM 660 4 Figure 10 Alarm and Fault Code Summary Fault Source Default Setting Fault Reset Clear High pressure Hardware Opens at 395 10 psig Closes at 250 25 psig Manual Low pressure Hardware Opens at 7 3 psig Closes at 22 7 psig Manual Condensate Hardware Conductivity trip point 2 5 micro ohms Manual overflow Brownout Software Line voltage 82 of nameplate voltage Auto High Pressure Fault The High Pressure fault indicates that the high pressure switch input J4 9 sensed an open circuit while the controller was calling for the compressor to run The high pressure switch HP is wired in series with the compressor relay output J4 5 and the compressor relay coil Therefore if a high pressure condition occurs the switch immediately shuts down the compressor then unit operation is disabled by the WSHP controller software For information on troubleshooting digital input faults see the Service and Troubleshooting section Symptoms as applicable e The compressor immediately de energizes e The software disables normal unit operation until the fault condition is manually corrected Low Temperature Fault The Low Temperature fault indicates that the low temperature switch input J4 12 sensed an open circuit while the contro
33. sor containing the software required to monitor and control the unit The controller supports a minimum of six analog inputs four digital inputs and five digital outputs including the LED All electrical connections to the board are provided by three mass termination style headers Two of the headers are designated strictly for factory wiring the other for a field wiring harness that terminates to a screw type terminal strip on the unit s exterior The controller uses set points and fixed preprogrammed parameters to maintain unit control many of the set points and preprogrammed parameters can be adjusted with a PC over the network Yellow Status LED A yellow on board status LED aids in diagnostics by indicating the water source heat pump operating mode and alarm conditions The yellow LED indicates the unit operating mode as shown in Table 1 For more information on alarms refer to the Alarm monitoring and control section A remote status LED is provided with all optional wall mounted temperature sensor packages It has the same function as the on board status LED If used the remote LED connects to the MicroTech WSHP controller at connection 1 on Terminal Board 1 Service Pin The service pin is used for network commissioning A service pin is a button located on the unit o controller that when pressed causes the Neuron chip to broadcast a message over the LONWORKS network containing its unique 48 bit Neuron ID This ID identi
34. spacers and then placing them on a static protected surface Remove the MicroTech 2000 replacement board from its static protected bag Insert the tapered tabbed portion of the board into the matching slot that has been cut into the sheet metal at the rear of the control box cabinet See Figure 3 Secure the board at the front end by means of a self retaining nylon spacer provided Insert 6 pan head screws provided through the spacers and tighten them using the screwdriver Plug the female connectors to the board mounted male plugs Re apply power to the unit controller Check the status LED and operating mode changeover devices The Status LED should illuminate 30 to 40 seconds after power up See Figure 1 If a wall sensor package is used the remote status LED should also illuminate Check the Power LED for auxiliary board if present See Figure 2 Verify that WSHP is functioning according to the specified sequence of operation see OM 128 for details Replacing a MicroTech 2000 WSHP Auxiliary Board Follow the steps below to remove an existing MicroTech 2000 auxiliary board attached to the unit controller and install a replacement auxiliary board DANGER The terminals on the Water Source Heat Pump unit controller are high voltage Disconnect power to avoid electrical shock potential which will result in death or serious injury if not avoided SOOO ALON pu E poor Disconnect power from the uni
35. t controller Unplug the wired female connectors from the board mounted male plugs Gently pull the auxiliary board from the TR3 snap track mounted outside unit the control box Remove the replacement auxiliary board from the static protected bag Insert the auxiliary board on the TR3 snap track Plug the female connectors to the board mounted male plugs Re apply power to the unit controller Confirm that the auxiliary board s Power LED is illuminated see Figure 2 Verify that WSHP is functioning according to the specified sequence of operation see OM 128 for details IM 660 4 Network Commissioning The commissioning procedure for a MicroTech 2000 Water Source Heat Pump unit controller differs depending on whether it is a LonMark or LonWorks application This section identifies the commissioning process for each version Units running in stand alone mode i e not connected to a BAS MicroTech gateway panel MCG or other LonWorks supported device do not require commissioning Note The commissioning procedure must be performed in addition to the mechanical and electrical system commissioning procedures outlined in the model specific installation literature see Reference Documents section Before applying power to any unit closely follow the pre start procedures in the model specific installation literature N CAUTION Electrostatic discharge hazard Can cause equipment damage This equipment contains sensit
36. te ient ite toli iret etit peer e ia 7 Auxillary Board Components cei e pre e dd t d ete ti ens 8 CIE ER 9 Installing a MicroTech 2000 Unit Controller esee een een enn 9 The following steps describe how to field install a new MicroTech 2000 unit controller 9 Tools Required 2 i uet ERE Rt mein aio ER RE RH d 9 Installation Proced re scsi D Rte ed See diete de ted On aea dane de uisus 9 Replacing a MicroTech 2000 WSHP Unit Controller eese nennen 10 Tools Required ede ente eere E e P pref 10 Replacing a MicroTech 2000 WSHP Auxiliary Board sees 11 Network Commissioning 1eeeeeeeeeeeeeeeee ee een enne nennen nint annnm annt nasi sn anat nnns nnne nana 12 Connecting to the NetWork inime 2 ertet ta du ee te p eed pee eterna 12 LONWORKS Network Addressing gt 5 5 ete ee Reti iH verre 12 Commissioning the MicroTech 2000 LonMark Unit Controller eee 13 External Interface File XIF and NXE Files sss eene nennen enne 13 Commissioning the MicroTech 2000 LonWorks Unit Controller eene 13 MicroTech 2000 Network Parameters cocccocccoonconanonaconanonancnnncnnanonano cano nennen nnn nnn nnns 15 Configurable Relay Outputs ie te Hte eee E o RERO eevee ERE ee Heed RE de ds 15 Communications Failure LONMARK 3 3 cccccccssssceessneeeesenceeessneeeeesneeeeneeeeess
37. tromechanical or solid state relays They switch inductive loads at 24 VAC 20 0 4 pF and at the steady state AC RMS currents listed in Table 9 10x single cycle surge currents are assumed on initial turn on The on board and off board status LEDs are controlled by one of the Neuron s 1 0 pins capable of Pulse Width Modulation See Table 5 22 IM 660 4 Table 5 Digital Outputs Description Type AC RMS current rating Fan contactor E M pilot duty relay at 300 mA AC SPST N O contacts Compressor contactor E M pilot duty relay at 300 mA AC SPST N O contacts Reversing valve solenoid E M pilot duty relay or SS random turn on Triac at 600 mA AC SPST N O contacts On board status LED Off board status LED Multi purpose spare isolated E M E M pilot duty relay at 300 mA AC SPST N O contacts Yellow DC sourced signal current limited to 10 mA DC contacts Input Output Table All WSHP controller input and output connections and the corresponding component descriptions are shown below in Table 6 Table 6 Inputs and Outputs for Micro Tech 2000 WSHP Units Connection Component description J1 1 TB 2 E Remote digital source J1 2 TB 2 L Remote digital signal J1 3 TB 2 U Spare relay normally closed J1 4 TB 2 P Spare relay common J1 5 TB 2 C Spare relay normally open J2 6 TB 1 1 Room sensor LED J2 7 TB 1 2 Tenant override J2 8 TB 1 3 Room sensor input J2 9
38. ver Microprocessor 24 VAC COM IM 660 4 Auxiliary Board Components 24 VAC COM The MicroTech 2000 WSHP controller provides one relay output that can be configured for the following four options e Boilerless system skin heat relay e Motorized water valve relay e Fresh air damper relay e Timed output relay LONWORKS only These options can affect installation requirements and unit control If more than one configurable relay output option is required the MicroTech 2000 WSHP auxiliary board is required to provide the three additional outputs The MicroTech 2000 WSHP auxiliary board typically is factory mounted only in 2 compressor circuit WSHP units See Figure 2 for important features Figure 2 MicroTech 2000 Auxiliary Controller Major Components Ys ota rot RIO i ER AE E LE n NIRO Eq EIE m D D10 oe OM R27 rcm R30 gt EA 427 13 7 s 4 2M D13 T R22 Ei gt RA pra C20 09 R129 e Power LED 8 IM 660 4 Installation The following section describes how to field install a new MicroTech 2000 WSHP unit controller or replace an existing unit controller Installing a MicroTech 2000 Unit Controller The following steps describe how to field install a new MicroTech 2000 unit controller A DANGER The terminals on the Water Source Heat Pump unit controller are high voltage Disconnect power to avoid electrical shock potential which will result in death or serious injury
Download Pdf Manuals
Related Search