Daikin Enfinity Installation And Maintenance Manual Download Page 44

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roubleshooting

Table 22: Compressor low suction temp

Description

Type

Yellow

Green

Red

Compressor Low Suction Temp

Fault

Flash

OFF

• Check water flow (heating operation)
• Check airflow (cooling operation)

• Entering water and air temperatures should be within the operating limits.

Table 23: Freeze fault detect

Description

Type

Yellow

Green

Red

Freeze Fault Detect

Fault

Flash

OFF

Flash

• Low entering water temperature (below 35

F standard range or 13.5

F extended range)

Table 24: Condensate overflow

Description

Type

Yellow

Green

Red

Condensate Overflow

Fault

OFF

• Poor condensate drain
• Check the resistance to ground on condensate wire. This should be open if there is no water in the pan.

Table 25: Serial EEPROM corrupted

Description

Type

Yellow

Green

Red

Serial EEPROM Corrupted

Fault

• Replace main board

Table 26: Waterside economizer low temp cutout (WSE control & call for cooling)

Description

Type

Yellow

Green

Red

Waterside Economizer Low Temp

Cutout (WSE Control & Call for

Cooling)

Mode

Flash

• Water temperature is below 35

Table 27: Service test mode enabled

Description

Type

Yellow

Green

Red

Service Test Mode Enabled

Mode

Flash

• Jumper JP1 is shorted for test mode operation.

Table 28: Unoccupied mode

Description

Type

Yellow

Green

Red

Unoccupied Mode

Mode

OFF

• Terminal U on main control board is connected to common from external source.

Table 29: Occupied, bypass, standby, or tenant override modes

Description

Type

Yellow

Green

Red

Occupied, Bypass, Standby, or Ten-

ant Override Modes

Mode

OFF

• Unit is operating normal. It may currently have a control signal or ready to operate when a control signal is active.

IM 1059-12 LARGE VERTICAL WSHP

44 www.DaikinApplied.com

Summary of Contents for Enfinity

Page 1: ...tenance Manual IM 1059 12 Group WSHP Part Number 910254902 Date October 2018 Enfinity Large Capacity Vertical Water Source Heat Pumps LVC Standard Range LVW Extended Range Unit Sizes 072 290 6 to 25 Tons R 410A Refrigerant ...

Page 2: ...controller and I O expansion module terminals locations and descriptions 30 MicroTech III controller with LonWorks or BACnet communication module 33 Typical Wiring Diagrams 34 MicroTech III controller with I O expansion module with hot gas reheat HGRH 208 230 460 575 60 3 1 5 hp or less 34 MicroTech III controller with I O expansion module with hot gas reheat HGRH 208 230 460 575 60 3 greater than...

Page 3: ...al Discharge U Upblast Rear F Upblast Front Blower Motor 15 19 20 01 Belt Drive Integral HP Motor 02 High Static 04 Ultra Static Construction Type 17 23 A Standard 1 2 Fiberglass Insulation B Closed Cell Foam Insulation F Standard 1 2 Fiberglass Insulation w Compressor Sound Blankets G Closed Cell Foam Insulation w Compressor Sound Blankets Water To Refrigerant Heat Exchanger 18 24 C Copper Inner ...

Page 4: ...loss or damage means loss or damage which does not become apparent until the product has been unpacked The contents may be damaged in transit due to rough handling even though the carton may not show external damages When the damage is discovered upon unpacking make a written request for inspection by the carrier s agent within fifteen 15 days of the delivery date and file a claim with the carrier...

Page 5: ...ibration see Figure 3 on page 6 Fan deck arrangements Six fan discharge arrangements and two piping arrangements are available With the return air side defined as the front of the unit the water piping connections may be right hand side or left hand All units have a single supply and return water connection with a copper FPT type fitting that protrudes through the unit casing for easy connection T...

Page 6: ...d for single compressor units and six green isolators are used for dual compressor units The holes in the bottom of the unit allow for a 3 8 10 mm bolt to be secured to the isolator Figure 3 Vibration isolator dimensions 4 114 mm 5 140 mm 2 64 mm 2 61 mm 7 16 11 mm 3 8 10 mm TAP Figure 4 Vibration isolators locations single compressor unit 3 76 mm 3 76 mm 3 76 mm 3 76 mm Section A A 2 51 mm A A 28...

Page 7: ...tension after 24 hours of operation Figure 6 Sheave adjustment detail single groove X Y D Adjusting 2 Groove Sheaves 1 All sheaves should be mounted on the motor or driving shaft with the setscrew X toward the motor 1 Loosen setscrews Y in moving flanges and pull out key E This key projects a small amount to provide a grip for removing 2 Rotate both movable flanges inward until they touch the cent...

Page 8: ...069 1005 3 0 1 125 1765 1406 1346 1316 1286 1227 1167 1107 120 2 0 0 875 1750 1242 1185 1129 1101 1073 1016 960 3 0 1 125 1765 1340 1275 1242 1209 1144 1079 1013 5 0 1 125 1750 1394 1335 1305 1275 1216 1157 1097 180 3 0 1 125 1765 1108 1070 1051 1033 995 958 920 5 0 1 125 1750 1307 1263 1241 1218 1174 1130 1085 7 5 1 375 1750 1462 1418 1373 1351 1329 1285 1241 1196 215 3 0 1 125 1765 1001 967 950 ...

Page 9: ...onnection of supply or return air ductwork especially return air ductwork which can hit the drain pan or the air coil Ventilation air Outside air may be required for ventilation The temperature of the ventilation air must be controlled so that mixture of outside air and return air entering the conditioner does not exceed conditioner application limits It is also general practice to close off the v...

Page 10: ...duct collar and filter rack 4 On single compressor units attach two flanges using four 4 8 truss head screws provided 5 Attach center support in original location 6 Locate and attach center filter racks using screw provided 7 Attach duct collar sides using eight 8 10 sheet metal 8 No point in the drain system may be above the drain connection of any unit 9 Automatic flow controlled devices must no...

Page 11: ...cessory 2 deep filter rack kit with return air duct flange sizes 180 290 Chassis Center Supports Top Duct Collar Top Filter Rack Center Filter Racks Duct Collar Side Door End Duct Collar Center Support IM 1059 12 LARGE VERTICAL WSHP 11 www DaikinApplied com ...

Page 12: ...ually join the unit via short lengths of high pressure flexible hose which are sound attenuators for both unit operating noise and hydraulic pumping noise One end of the hose should have a swivel fitting to facilitate removal for service Hard piping can also be brought directly to the unit This option is not recommended since no vibration or noise attenuation can be accomplished The hard piping mu...

Page 13: ... If the trap is too short the seal will be destroyed or nonexistent producing the same effect as a non trapped system 1 Each water source heat pump is provided with a 3 4 FPT flush mount fitting for connection of a condensate drain A complete copper or PVC condensate system can be used Copper or steel condensate piping should be insulated to prevent sweating In most applications the use of PVC pre...

Page 14: ... As K Br L F M G J WSE condensate drain connection 7 8 O D 1 1 2 FPT Supply water connection Left hand unit Right hand unit 1 1 2 FPT Return water connection Vent access Motorized valve access panel Note Piping connections from WSE return to unit supply to be field installed Cs Unit Size Supply Return Connections Condensate Drain 7 8 O D F G H J K L M filter rack As Br Cs Cr D E Stan dard Op tiona...

Page 15: ... low leak No filter no filter rack Field installed filter rack with return air duct flange accessory for large vertical units 2 filter rack with return air duct flange A B C Accessory 2 deep filter rack with return air duct flange D Table 2 Accessory filter rack with return air duct flange dimensions Unit Size A B C D Filters quantity 2 deep 072 120 50 10 30 90 2 29 1 4 180 290 74 10 38 90 6 Note ...

Page 16: ...ikinApplied com Unit Installation Typical WSE field provided and installed jumper piping routing details LVC LVW sizes 072 120 right hand Front View 3 7 Max dim 1 7 Min dim Right End View WSE Supply Unit Supply Unit Return Top View WSE Return ...

Page 17: ...Unit Installation www DaikinApplied com 17 LARGE VERTICAL WSHP IM 1059 12 LVC LVW sizes 072 120 left hand Front View Top View 7 Min dim 11 Max dim Left End View WSE Supply Unit Supply WSE Return ...

Page 18: ...SHP IM 1059 12 Unit Installation Typical WSE field provided and installed jumper piping routing details LVC LVW sizes 180 290 right hand WSE Supply Unit Supply Unit Return WSE Return Right End View Top View Front View 15 Min dim 19 85 Max dim ...

Page 19: ... DaikinApplied com 19 LARGE VERTICAL WSHP IM 1059 12 Unit Installation LVC LVW sizes 180 290 left hand Front View Top View 17 Min dim 10 Max dim Left End View WSE Supply Unit Supply WSE Return Unit Return ...

Page 20: ...r flow rates should Be high enough that the temperature rise through the heat exchanger does not exceed 10 F when operating in the cooling mode Not exceed 4 GPM per nominal ton Flow rates that have velocities of 10 feet per second or more may cause pipe erosion and heat exchanger failure Unit Installation Table 3 Water quality conditions applications Potential Problem Chemical s or Condition Range...

Page 21: ...r sewage systems The current recommendation is to simply flush longer with warm 80 F 27 C water 5 Refill the system with clean water Test the water using litmus paper for acidity and treat as required to leave the water slightly alkaline pH 7 5 to 8 5 The specified percentage of antifreeze may also be added at this time Use commercial grade antifreeze designed for HVAC systems only Do not use auto...

Page 22: ...e electrical noise Never install relay coils in series with the inputs Operating voltages 208 230 60 1 197 volts min 253 volts max 265 60 1 238 volts min 292 volts max 230 50 1 197 volts min 253 volts max 460 60 3 414 volts min 506 volts max 575 60 3 515 volts min 632 volts max Note Voltages listed are to show voltage range However units operating with over voltage and under voltage for extended p...

Page 23: ...ir and water at flow rates used in the ISO 13256 1 rating test for initial start up in winter Note This is not a normal or continuous operating condition It is assumed that such a start up is for the purpose of bringing the building space up to occupancy temperature Antifreeze correction factors Table 6 Ethylene glycol 10 20 30 40 50 Cooling Capacity 0 9950 0 9920 0 9870 0 9830 0 9790 Heating Capa...

Page 24: ... Loop Fluid Systems with anti freeze protection Freeze Fault Protection JP4 Open None Shorted Freeze fault protection enabled Room Sensor Setpoint Potentiometer Range JP5 Open Short Range 5 to 5 ºF 2 78 to 2 78 ºC Shorted Long Range 55 to 95ºF 12 78 to 35ºC Thermostat Room Sensor JP6 Open Thermostat Control Shorted Room Sensor Control Compressor Availability JP7 JP8 JP7 Open Both Compressors Avail...

Page 25: ...ng mode temperature difference For example if the cooling temperature difference is 15 F 8 C the heating temperature difference should have been 10 F 5 C Without automatic flow control valves target a cooling temperature difference of 10 F to 14 F 5 C to 8 C Adjust the combination shutoff balancing valve in the return line to a water flow rate which will result in the 10 F to 14 F 5 C to 8 C diffe...

Page 26: ...he unit control enclosure for easy accessibility The board is designed to provide thermostat control of a Water Source Heat Pump using a two stage wall thermostat The unit controller provides unit wide control of the WSHP and control of the first refrigerant circuit Each unit controller is factory programmed wired and tested for complete control of single zone standalone operation of your Daikin W...

Page 27: ...formance When a call for 1st stage cooling is engaged with the entering loop water below the economizer changeover temperature the H8 output on the MicroTech III board is activated to open the motorized valve allowing water flow to the equipment The compressor is locked out the 3 way water valve opens to allow cool loop water to flow through the economizer coil The fan starts after 30 seconds unle...

Page 28: ... prevent compressor short cycling Unoccupied mode A simple grounded signal between terminals U and C no power source required puts the unit into the unoccupied mode for night setback operation Inter staging timer A default value of 5 minutes between staging of compressors this feature minimizes short cycling of compressors and improves comfort Override mode A switch on the deluxe automatic changeo...

Page 29: ...re faults This feature clears faults the first two times they occur within a 24 hour period and triggers an automatic lockout on the 3rd fault The fault remains active until the alarm is manually cleared At the end of the 24 hour period all counts for that specific intelligent reset alarm are cleared to zero only if the occurrence counter is presently less than the value of three The 24 hour perio...

Page 30: ...ssor Low Pressure Switch LP1 Signal H6 6 Reversing Valve Common H6 7 Reversing Valve Output H7 1 1 No Connection H7 2 No Connection 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 Request Relay N O H8 2 Isolation Valve Pump Request Relay N C H8 3 24 VAC Common H9 1 1 Return Air Temp Signal H9 2 Return Air Temp Common TB1...

Page 31: ...trols Note A random start delay time between 300 and 360 seconds is generated at power up Figure 19 MicroTech III unit controller terminal locations IM 1059 12 LARGE VERTICAL WSHP 31 www DaikinApplied com ...

Page 32: ...e Economizer Output N O H3 4 Ext 24 VAC Common H3 5 Fan Motor Signal H3 6 Fan Motor Common H4 1 1 Entering Water Temp Sensor Signal H4 2 Entering Water Temp Sensor Common H5 1 1 No Connection H5 2 No Connection H5 3 Red LED Output H5 4 Green LED Output H5 5 Yellow LED Output H5 6 Red Green Yellow LED Common H6 1 HP2 1 Comp 2 High Pressure Switch HP2 Input Terminal 1 H6 2 HP2 2 Comp 2 High Pressure...

Page 33: ...zed scheduling and management of multiple heat pumps MicroTech III controller with communication modules features The MicroTech III Controller with LonWorks or BACnet Communication Module orchestrates the following unit operations Enable heating and cooling to maintain space temperature setpoint based on a room sensor setting Enable fan and compressor operation Monitors all equipment protection co...

Page 34: ...3 fan motor wires for left hand unit Legend Item Description CC1 Circuit 1 Compressor Contactor CC2 Circuit 2 Compressor Contactor CM1 Circuit 1 Compressor CM2 Circuit 2 Compressor COS Condensate Overflow Sensor HP Circuit 1 High Pressure Switch HP2 Circuit 2 High Pressure Switch IOEXP I O Expansion Board Harness LED1 LED Annunciator Harness LED2 LED Annunciator Harness RAT Return Air Temp Sensor ...

Page 35: ...NAL COM 4 ROOM SENSOR TO 3 SETPOINT ADJUST 2 FAN MODE HT CL AUTO 1 ROOM SENSOR LED U MARK IV OCC UNOCC E EMER SHTDN INPUT R 24VAC Communication Module 24V NO 24VAC COMMON 24V NC Note Switch L2 L3 fan motor wires for left hand unit Note Wiring diagrams are typical For the latest drawing version refer to the wir ing diagram located on the inside of the controls access panel of the unit Gray tinted a...

Page 36: ...ON 24V NC Note Switch L2 L3 fan motor wires for left hand unit Note Wiring diagrams are typical For the latest drawing version refer to the wiring diagram located on the inside of the controls access panel of the unit Gray tinted areas in the wiring diagram Units with factory installed communication module include Discharge Air Temperature DAT and Return Air Temperature RAT sensors shipped loose a...

Page 37: ...croTech III Controller 24V NO 24VAC COMMON 24V NC Note Switch L2 L3 fan motor wires for left hand unit Note Wiring diagrams are typical For the latest drawing version refer to the wiring diagram located on the inside of the controls access panel of the unit Gray tinted areas in the wiring dia gram Units with factory installed com munication module include Discharge Air Temperature DAT and Return A...

Page 38: ...C R A W1 Y3 Y2 G C RH RC W2 A I O Expansion Module TB1 MicroTech III Controller Terminal TB2 Programmable Touch Screen Y1 1 Notes Includes thermostat and wall plate Refer to IO manual 910193127 Figure 23 Programmable Electronic Thermostat 3 Heat 2 Cool 7 Day Programmable Auto Changeover Hardwired P N 910193128 Wi Fi P N 910193133 W2 W1 Y2 Y1 G C R A W1 Y2 Y1 G C RH RC W2 A MicroTech III Controller...

Page 39: ... N 667720401 Sensors used with MicroTech III control Building Automated System Operation BAS Figure 28 Digitally Adjustable Display Sensor 6 button P N 910121754 1 R 2 4 E U 6 5 3 O G Y1 Y2 W2 A R 2 Y1 Y2 W1 W2 R MicroTech III Controller Terminals TB2 MicroTech III Controller Terminals TB1 C G O A 1 U MicroTech III Controller Terminals TB3 E Digitally Adjustable Room Temperature Sensor Part No 910...

Page 40: ...oller Terminals TB1 1 4 Basic Room Sensor Part No s 669529001 910152149 3 2 5 1 4 Figure 32 Room sensor with temperature adjustment wiring 3 2 5 MicroTech III Controller Terminals TB1 1 4 Room Sensor with Temperature Adjustment Part No s 669529101 669529201 910121753 3 2 5 1 4 Figure 33 Adjustable Cool Warm with Occupancy Switch P N 910121753 ...

Page 41: ...s the valve body actuator and wire harness The 24VAC valve actuator must be wired directly to terminal block H8 on the MicroTech III controller See Figure 36 on page 41 for wiring details The valve will only energize on a call for heating or cooling The 1 1 4 valve is rated for 300 psig 2068 kPa and the 1 1 2 valve is rated for 150 psig 1034 kPa Figure 35 Normally closed power open motorized valve...

Page 42: ...ling Dehumidification Modes Only Fault ON OFF OFF Serial EEPROM Corrupted Fault ON ON ON Service Test Mode Enabled Mode Flash Flash Flash Unoccupied Mode Mode ON ON OFF Occupied Bypass Standby or Tenant Override Modes Mode OFF ON OFF Note The MicroTech III baseboard LED s mode faults are listed in order of priority Table 15 I O expansion module status LED s fault outputs Description Type Yellow Gr...

Page 43: ...unit supply voltage matches the nameplate voltage and the correct transformer primary wire has been selected Table 19 Compressor high pressure Description Type Yellow Green Red Compressor High Pressure Fault OFF OFF Flash Verify high pressure switch is connected to terminal H3 on the main board Check for continuity of the high pressure switch If the high pressure fault resets when power is recycle...

Page 44: ... Red Serial EEPROM Corrupted Fault ON ON ON Replace main board Table 26 Waterside economizer low temp cutout WSE control call for cooling Description Type Yellow Green Red Waterside Economizer Low Temp Cutout WSE Control Call for Cooling Mode Flash ON Flash Water temperature is below 35 F Table 27 Service test mode enabled Description Type Yellow Green Red Service Test Mode Enabled Mode Flash Flas...

Page 45: ...it 2 is low on charge Table 33 Compressor 2 low suction temp Description Type Yellow Green Red Compressor 2 Low Suction Temp Fault Flash OFF OFF Check water flow heating operation Check airflow cooling operation Entering water and air temperatures should be within the operating limits Table 34 Compressor 2 low suction temp Description Type Yellow Green Red Compressor 2 Low Suction Temp Fault Flash...

Page 46: ... confirmed 1 Check the control wiring 2 Verify dipswitch 8 is ON Green Flash Code 2 Future Use N A N A N A Green Flash Code 3 Short Cycling Run time of less than 1 minute number of short cycles exceeds 48 in 24 hours 48 short cycles in 24 hours 1 Check system charge and pressure control setting 2 Adjust set point of tempera ture controller 3 Install anti short cycling control Green Flash Code 4 Im...

Page 47: ...ause and then repeated This alert does not result in a Lockout Troubleshooting water source heat pump units Table 39 Troubleshooting refrigeration circuit Symptom Head Pressure Suction Pressure Compressor Amp Draw Super Heat Subcooling Air Temp Differential Water loops Temp Differential Safety Lock Out Charge Undercharge System Possible Leak Low Low Low High Low Low Low Low Pressure Overcharge Sys...

Page 48: ...ring for defective wiring or loose connection Insufficient cooling or heating Check for lock rotor amp draw Check for defective compressor internal windings with ohm meter Check for proper air flow filter could be dirty Check for low refrigerant charge Check amp draw on blower assembly Fan operates compressor does not Compressors runs in short cycle Neither fan nor compressor runs and all LED ligh...

Page 49: ...heating mode of operation Superheat Head Pressure Water Delta T 8 to 14 degrees 335 355 PSIG 10 to 14 Note All information above is based on ISO standard 13256 1 and tested at these conditions General maintenance 1 Normal maintenance on all units is generally limited to filter changes Units are provided with permanently lubricated motors and require no oiling even though oil caps may be provided 2...

Page 50: ...t heat exchanger coaxial heat exchanger There the heat is removed by the water and the hot gas condenses to become a liquid The liquid then flows through a thermal expansion valve to the air to refrigerant heat exchanger coil evaporator The liquid then evaporates and becomes a gas at the same time absorbing heat and cooling the air passing over the surfaces of the coil The refrigerant then flows a...

Page 51: ...ant heat exchanger coil condenser There the heat is removed by the air passing over the surfaces of the coil and the hot gas condenses and becomes a liquid The liquid then flows through a thermal expansion valve to the water to refrigerant heat exchanger evaporator The liquid then evaporates and becomes a gas at the same time absorbing heat and cooling the water The refrigerant then flows as a low...

Page 52: ... the evaporator coil Then the refrigerant flows to the water to refrigerant heat exchanger coaxial heat exchanger There the heat is removed by the water and the hot gas condenses to become a liquid The liquid then flows through a thermal expansion valve to the air to refrigerant heat exchanger coil evaporator The liquid then evaporates and becomes a gas at the same time absorbing heat and cooling ...

Page 53: ..._________________________________________ Loop System Free of Air ____________________________________________________________________ Filters Clean _____________________________________________________________________________ Condensate Traps Installed __________________________________________________________________ Note No answers below require notice to installer by memorandum attached copy O...

Page 54: ...rence between the two is referred to as P P can be converted to GPM by looking in the equipment specificaton catalog Caution P GPM Note A conversion table must be used to find GPM from Delta P measurements Loop Fluid Temperature Rise Drop through Coaxial Heat Exchanger EWT LWT T EWT F Out__________________ minus LWT F Out___________________ equals Fluid T________________ T is the rise or drop in t...

Page 55: ...r each unit per installation on previous page Model Serial H P EWT 3 LWT 4 EWP 1 LWP 2 EAT 5 LAT 6 Volts Amps Cool ing Check Air Filter and Coil Comments provide comments on additional sheets 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Part No ______________________________ ...

Page 56: ...tandard terms and conditions of sale including Limited Product Warranty Consult your local Daikin Applied representative for warranty details Refer to Form 933 430285Y To find your local Daikin Applied representative go to www DaikinApplied com Aftermarket Services To find your local parts office visit www DaikinApplied com or call 800 37PARTS 800 377 2787 To find your local service office visit w...

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