Daikin MicroTech III Operation & Maintenance Manual Download

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Operation & Maintenance Manual

MicroTech

III Unit Controller for Water Source Heat

Pump Units

Used with Enfinity Models CCH/CCW, VFC/VFW, MHC/MHW, LVC/LVW

OM 931-6

Group:

WSHP

Part Number:

910157590

Date:

September 2014

Summary of Contents for MicroTech III

Page 1: ...ion Maintenance Manual MicroTech III Unit Controller for Water Source Heat Pump Units Used with Enfinity Models CCH CCW VFC VFW MHC MHW LVC LVW OM 931 6 Group WSHP Part Number 910157590 Date September...

Page 2: ...al Equipment 15 Appendix A 15 Operation and Maintenance of I O Expansion Module 15 Start up 16 Initial Power up 16 Operation 17 Electric Heat Controls 17 Multiple Speed Fan Control 17 Circuit Two Addi...

Page 3: ...ump LonWorks Communication Module IM 928 MicroTech III Water Source Heat Pump Unit Controller BACnet MS TP Communication Module IM 933 LonWorks Plug In Software for use with MicroTech III Unitary Cont...

Page 4: ...put H7 1 1 No Connection H7 2 No Connection MicroTech III Unit Controller H7 3 Red LED Output H7 4 Green LED Output H7 5 Yellow LED Output H7 6 Red Green Yellow LED Common H8 1 1 Isolation Valve Pump...

Page 5: ...M 931 6 MicroTech III Unit Controller for WSHP 5 www DaikinApplied com MicroTech III Unit Controller MicroTech III Unit Controller Connections Figure 1 MicroTech III Unit Controller Terminal Locations...

Page 6: ...ed Service Test Mode Fan Operation JP2 Open Continuous Fan Operation On when not operating in the unccupied mode Shorted Cycling Fan Operation Auto Loop Fluid JP3 see warning Open Water Loop Fluid wat...

Page 7: ...1 and Y1 respectively for single circuit units in occupied mode For information on W2 and Y2 for dual circuit units refer to Dual Circuit Units on page 17 The MicroTech III unit controller is configur...

Page 8: ...hen the Y1 terminal is de energized the following occurs 1 The compressor de energizes 2 The fan de energizes unless the G terminal is energized 24VAC or JP2 is open 3 The IV PR H8 control output ener...

Page 9: ...unit operation No faults or modes have higher priority than a brownout fault condition Remote shutdown and brownout conditions have the same level of priority See Priority of Faults and Modes on page...

Page 10: ...r LP circuit is closed the unit does not return to normal operation until the control board is reset The unit is locked out in this manner until the unit can be serviced The control board is reset by...

Page 11: ...ers an automatic lockout on the 3rd fault The retry count is reset to zero every 24 hours Refer to Table 3 Faults Tenant Override Note It is recommended that the Occupied Opera tion on page 7 and Unoc...

Page 12: ...figured with mode and fault priorities Table 4 illustrates that the lower the priority level number the higher the priority of the fault or mode There are some exceptions to this priority list For exa...

Page 13: ...y adhere to field wiring procedures regarding proper lockout and tagout of components Figure 6 MicroTech III Unit Controller LED Status and Faults Troubleshooting Reference Flash Yellow LED Read Outpu...

Page 14: ...pressor wiring for defective wiring or loose connection Check for faulty compressor capacitor Insufficient cooling or heating Check for lock rotor amp draw Check for defective compressor internal wind...

Page 15: ...evice to drive a mechanical relay not supplied by Daikin then use the mechanical relay s dry contacts to drive the desired MicroTech III unit controller input The MicroTech III unit controller s valve...

Page 16: ...R Dehumidification JP2 JP2 Open None default JP2 Shorted Hot Gas Water Reheat HGR Secondary Heating Options JP3 JP4 JP3 Open None JP4 Open JP3 Shorted Supplemental Electric Heat JP4 Open JP3 Open Boil...

Page 17: ...xpansion Module and no electric heat it is possible to configure the I O Expansion Module for a two speed fan If there is a call for continuous fan compressor off the fan motor runs in low speed If th...

Page 18: ...in 6 H8 Pin 1 Dual compressor compressor 2 normally open output all others fan medium speed normally open Pin 2 24 VAC common Pin 3 No connection Pin 4 Dual compressor reversing valve for circuit 2 al...

Page 19: ...nit mounted return air discharge air and leaving water temperature sensor Wall mounted temperature sensors include setpoint adjustment and tenant override The user has the capability of substituting t...

Page 20: ...he range 0 127 Four green status LEDs on the communication module indicate communication activity on the MS TP communication network and with the unit controller Figure 10 MicroTech III BACnet MS TP S...

Page 21: ...emperature EWT sensor is included with ECM and or Secondary Electric Heat Legend Item Description C1 Capacitor Compressor C2 Capacitor Fan CC Compressor Contactor CM Compressor Motor CDS Condensate Ov...

Page 22: ...ering Water Temperature EWT sensor is included with ECM and or Secondary Electric Heat Legend Item Description C1 Capacitor Compressor C2 Capacitor Fan CC Compressor Contactor CM Compressor Motor CDS...

Page 23: ...d Entering Water Temperature EWT sensor is included with ECM and or Secondary Electric Heat Legend Item Description C1 Capacitor Compressor C2 Capacitor Fan CC Compressor Contactor CM Compressor Motor...

Page 24: ...d with ECM and or Secondary Electric Heat Table B 208V RED 230V ORG 460V BLK RED Legend Item Description C1 Capacitor Compressor C2 Capacitor Fan CC Compressor Contactor CM Compressor Motor CDS Conden...

Page 25: ...able B 208V RED 230V ORG Notes Transformer Unused wire to be capped Legend Item Description C1 Capacitor Compressor C2 Capacitor Fan CC Compressor Contactor CM Compressor Motor COS Condensate Overflow...

Page 26: ...alve Capability Short Cycle Protection Random Start Unoccupied Mode Override Mode Pump Restart Loadshed Brownout Protection Unit Shutdown Condensate Overflow Protection Remote Reset 1 Intelligent Rese...

Page 27: ...OM 931 6 MicroTech III Unit Controller for WSHP 27 www DaikinApplied com This page left intentionally blank...

Page 28: ...o its standard terms and conditions of sale including Limited Product Warranty Consult your local Daikin Applied Representative for warranty details To find your local Daikin Applied Representative go...

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