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49

Preventive Maintenance

1.  Keep all air out of the water lines. An open loop system 

should be checked to ensure that the well head is not 

allowing air to infiltrate the water line. Lines should 

always be airtight.

2.  Keep the system under pressure at all times. In open 

loop systems, it is recommended that a water control 

valve be placed in the discharge line to prevent loss of 

pressure during off cycles. Closed loop systems must 

have a positive static pressure.

NOTES:

 If the installation is performed in an area with 

a known high mineral content in the water, it is best to 

establish a periodic maintenance schedule to check the 

water-to-refrigerant heat exchanger on a regular basis.  

Should periodic cleaning be necessary, use standard 

cleaning procedures which are compatible with either the 

cupronickel or copper water lines. Generally, the more water 

flowing through the unit, the less chance there is for scaling. 

Low GPM flow rates produce higher temperatures through 

the coil. To avoid excessive pressure drop and the possibility 

of copper erosion, do not exceed GPM flow rate as shown 

on the specification sheets for each unit.

Cleaning Procedure

1.  Close the inlet and outlet water valves to isolate the heat 

pump from the well system, water heater or loop pumps.

2.  Disconnect piping and remove solenoid valve, pumps, etc, 

from the inlet and outlet connections on the heat pump.

3.  Connect plastic hoses from the circulating pump* to the 

outlet of the water-to-refrigerant heat exchanger to be 

de-limed (refer to the Cleaning Connections illustration).

4.  Connect a plastic hose from the circulating pump inlet 

to the bottom of a plastic five (5) gallon pail (refer to 

the Cleaning Connections illustration).

5.  Connect a plastic hose from the inlet line of the water-

to-refrigerant heat exchanger to the plastic pail. Secure 

tightly to ensure that circulating solution does not spill 

(refer to the Cleaning Connections illustration).

6.  Partially fill the plastic pail with clear water (about two-

thirds full) and prime the circulating pump. Circulate 

until lines are full.

7.  Start the circulating pump and slowly add a commercial 

scale remover** to the water as recommended by the 

scale remover manufacturer’s directions.

8.  Be sure the pump circulation is opposite to the normal 

water flow through the water-to-refrigerant heat exchanger.

9.  Maintain re-circulation until all scale and other material 

has been dissolved and flushed from the heat exchanger.

10.  Upon completion of the procedure. Safely dispose of

the solution.

11.  Rinse the pump and plastic pail. Refill with clear water.

12.  Start the pump circulation and flush the system until all 

acid residue has been removed from the system. Refill 

the plastic pail until only clear water is circulated.

13.  Turn off the circulating pump and disconnect all hoses 

and fittings.

14.  Replace solenoid valves, pumps, hoses and other 

devices in their original locations. On closed loop 

systems, be sure to purge between the flow center and 

unit to avoid getting air into the loop.

15.  Put the heat pump back into operation. Check for 

proper operating temperature.

NOTES:

  *Virginia Chemical Co. makes a Pump model H460.

* W.W. Granger Co. sells a Pump #2P-017 made by Little Giant.

**Virginia Chemical Co. makes a liquid ice machine cleaner which should be used on water-to-refrigerant heat exchangers 

serving a domestic hot water system. Calci-Solve by NYCO is available for use on other heat exchangers

Cleaning Connections

WARNING: This process involves a caustic 

solution and may be harmful to people and 

animals. Wear protective equipment (glasses, 

rubber gloves, apron, etc.)

Five-gallon Bucket

Pump

AFFINITY SINGLE STAGE HYDRONIC WITH OPTIHEAT INSTALLATION MANUAL

Summary of Contents for AFFINITY OptiHeat YAW040

Page 1: ...0 066 3 THRU 5 NOMINAL TONS Due to continuous product improvement specifications are subject to change without notice Visit us on the web at www york geothermal com Additional rating information can f...

Page 2: ......

Page 3: ...es 34 Water Pressure Drop 35 Pressure Drop 36 Operating Limits 37 Physical Data 37 Flow Rates 37 Heating Cooling Operating Envelope 38 Thermistor and Compressor Resistance 39 Operating Parameters 39 A...

Page 4: ...s D AuroraTM Performance1 Refrigeration Future Option 0 Standard Future Option A Standard Water Coil Option C Copper Future Option A Standard IntelliStart 0 None 3 IntelliStart Rev A 2 27 19 DJM A 14...

Page 5: ...should be carefully checked against the bill of lading to ensure that all crates and cartons have been received in good condition Examine units for shipping damage removing unit packaging if necessar...

Page 6: ...llation should provide service personnel with the ability to measure water temperatures and pressures The water lines should be routed so as not to interfere with access to the unit The use of a short...

Page 7: ...m divided by 17 mg L is equivalent to ppm 2 22 12 Water Treatment Do not use untreated or improperly treated water Equipment damage may occur The use of improperly treated or untreated water in this e...

Page 8: ...be acid flushed Typical Open Loop Installation Open Loop Well Water Systems Always maintain water pressure in the heat exchanger by placing water control valves at the outlet of the unit Use a closed...

Page 9: ...d dirt particles from the loop itself Antifreeze solution is used in most areas to prevent freezing Flush the system adequately to remove as much air as possible then pressurize the loop to a static p...

Page 10: ...to follow installation manual and install check valves Fixed speed and variable speed pumping available Small footprint for mounting location flexibility Can be mounted in several orientations see fl...

Page 11: ...pressor C R S Unit Power Supply 2 208 230 60 1 G L1 L2 CCB L1 L2 T1 T2 Red Black CCP L1 L2 T1 T2 Tan 52B Black Blue 230V White 8 Black 7 G Load Pump G External Source Pump NOTE 10 Blue 12 AWB 12 AWB F...

Page 12: ...ariable speed UPMXL 25 124 pump also requires a low voltage signal to operate properly if the low voltage signal isn t present the pump will run at 100 Route the low voltage harness connected to the p...

Page 13: ...nd local codes for wiring The variable speed UPMXL 25 124 pump also requires a low voltage signal to operate properly if the low voltage signal isn t present the pump will run at 100 Route the low vol...

Page 14: ...DATA S screw terminal and connect the black wire from the left hand pump to the same location After the troubleshooting is complete remove the black wire from the left hand pump and connect the black...

Page 15: ...k valve is not equal to a backflow prevention check valve Even if local code does not require this device The manufacturer recommends its installation This is particularly important if the system will...

Page 16: ...the HydroStat The OAT and GND terminals on the HydroStat are used to connect the controller to the ELWT Entering Load Water Temperature well point sensor This sensor is located on the load side enter...

Page 17: ...ility without HydroStat the tank temperature won t be displayed on Symphony if available Single Stage HydroZone HZC features 2 1 2 x 2 1 2 LCD display and five push buttons serve as the human interfac...

Page 18: ...omposite body pump EWPK2 Grundfos UP26 99SF is stainless steel body pump Part number EWPK1 and EWPK3 come with a cast iron body pump Grundfos UP26 99F that can be used for hydronic heating application...

Page 19: ...be used with Aurora Base Control Board DRAIN VALVE MODEL NUMBER GALLON CAPACITY ELEMENT WATTAGE 240 VOLT NUMBER OF ELEMENTS R VALUE DIMENSIONS IN INCHES APPROX SHIPPING WEIGHT lbs HEIGHT DIAMETER GEO...

Page 20: ...33 0 39 5 60 Notes All fuses type D time delay or HACR circuit breaker in USA 7 08 14 Source pump amps shown are for up to a 1 2 HP pump Load pump amps shown are for small circulators LRA with Intell...

Page 21: ...source pump The source pump directly connects to the PB2 terminal block The load pump directly connects to the PB1 terminal block Do not wire variable speed pumps in this manner See schematics for VS...

Page 22: ...ite Not Used Violet White 8 Violet White 9 Black White 2 Black White 1 Violet 7 Violet 6 Black 4 Black 5 Orange 11 Brown 12 LPR LPR LPR NO NC COM LPR NO NC COM LPR NO NC COM Black White 3 24 VDC LPR N...

Page 23: ...w No Software Overide OFF DIP SwitchOveride SlowFlash Configuration LED LED2 Yellow No Software Overide OFF DIP SwitchOveride SlowFlash Fault LED LED1 Red Normal Mode Input Fault Lockout High Pressure...

Page 24: ...is present 2 Aurora Setup Screen a AXB Setup i Variable Speed Pump Setup and Modulating Water Valve Setup Can be setup to a range between 5 and 100 Defaults are 75 and 100 From the Main Menu of the A...

Page 25: ...ormance Monitoring sensor kits These kits can be factory or field installed The following description is for field activation of a factory installation of the sensor kits Energy Monitoring Standard Se...

Page 26: ...etection over under voltage faults Aurora uses the Modbus communication protocol to communicate between modules Each module contains the logic to control all features that are connected to the module...

Page 27: ...time refrigerant temperatures pressures water temperatures For subcooling calculates the heat of extraction rejection Optional Sensor Kit Add On Thermostats and Zoning Description Aurora Advanced HSC...

Page 28: ...ase SW1 and the control will reset DIP Switch SW2 SW2 1 Source FP1 Selection Low water coil temperature limit setting for freeze detection On 30 F Off 15 F SW2 2 Load FP2 Selection On 30 F Off 15 F SW...

Page 29: ...selected set point for the entire length of the appropriate delay to be recognized as a fault This fault will be ignored for the initial 2 minutes of the compressor run time Freeze Detection Load Coa...

Page 30: ...lay the status configuration and fault codes for the control These can also be read in plain English via the Aurora AID Tool Status LED LED3 Green Description of Operation Fault LED Green Normal Mode...

Page 31: ...ng the AID Tool 75 and 100 are the default settings respectively With single speed equipment both min max should be set to the same value Compressor Monitoring The AXB includes two current transducers...

Page 32: ...no lockout info only Output from home security Sump Alarm Fault no lockout info only Switch output from sump sensor Smoke CO Alarm Fault no lockout info only Switch output from Smoke CO sensor Dirty F...

Page 33: ...ontinuity for 30 continuous sec Fault Over Under Voltage 8 No Auto Instantaneous voltage is out of range Controls shut down until resolved Fault FP1 Snsr Error 11 Yes Hard or Soft If FP1 Sensor Error...

Page 34: ...PD load coax water pressure drop EER energy efficiency ratio cooling LWT leaving water temperature TC total cooling capacity in MBTUH EWT entering water temperature HR heat rejected in MBTUH Brine wat...

Page 35: ...odel 050 0 1 2 3 4 5 6 7 8 9 10 5 10 15 20 Water Pressure Drop psig Flow Rate gpm 110oF 30oF 0 1 2 3 4 5 6 0 5 10 15 20 Water Pressure Drop psig Flow Rate gpm 110oF 30oF AFFINITY SINGLE STAGE HYDRONIC...

Page 36: ...50 8 0 1 7 1 4 1 4 1 3 1 3 1 2 1 1 11 5 3 6 3 4 3 2 3 0 2 8 2 6 2 5 15 0 5 6 5 4 5 0 4 6 4 4 4 3 4 1 18 5 8 3 8 1 7 6 7 2 6 8 6 6 6 4 066 10 0 3 2 3 0 2 8 2 7 2 5 2 4 2 3 14 5 5 5 5 3 5 1 4 9 4 7 4 6...

Page 37: ...and 3 flow rate gpm When any of the factors are at the minimum or maximum levels the other two factors must be at the normal level for proper and reliable unit operation Consult the Capacity Tables fo...

Page 38: ...Operating Range Operation Not Allowed If you are experiencing E10 faults caused by the thermal limit in the compressor being tripped and the unit is operating in or close to the Sensitive Operating Ra...

Page 39: ...8 235 7 14 6 14 20 30 50 95 113 216 245 7 14 6 12 15 25 70 124 144 225 255 8 19 5 15 6 16 90 143 167 230 275 14 26 8 12 8 12 80 30 69 84 293 323 10 12 7 18 7 18 50 98 125 302 335 12 14 8 16 25 35 70 1...

Page 40: ...16 10 19 90 30 92 113 128 166 15 20 3 6 50 115 143 197 233 11 15 6 9 70 129 158 266 294 11 15 9 12 90 145 165 350 390 20 30 8 19 110 160 180 360 400 25 35 7 16 110 30 96 121 125 170 55 65 2 20 50 127...

Page 41: ...930 1 523 50 0 907 0 779 0 795 0 911 1 639 Methanol 10 0 985 0 957 0 962 0 986 1 127 20 0 969 0 924 0 929 0 970 1 197 30 0 950 0 895 0 897 0 951 1 235 40 0 935 0 863 0 866 0 936 1 323 50 0 919 0 833...

Page 42: ...Normal High Normal Low Water Flow Evaporator Low Normal Low Normal Low Low High High Low Water Flow Condensor High High High High Low High High Water Flow Evaporator Normal Low Normal High Normal Low...

Page 43: ...0 48 9 55 5 62 1 68 7 49 5 56 1 62 8 69 4 12 0 47 7 54 3 60 9 67 5 48 3 54 9 61 6 68 2 48 8 55 5 62 2 68 9 15 0 47 2 53 8 60 4 67 0 47 7 54 4 61 0 67 7 48 2 55 0 61 7 68 5 90 8 0 44 4 54 1 63 8 73 5...

Page 44: ...38 1 40 7 39 5 39 2 39 0 37 5 41 3 40 2 39 9 39 8 38 4 12 0 41 0 40 0 39 0 37 4 41 6 40 7 39 7 38 3 37 8 42 2 41 3 40 5 39 2 38 7 15 0 41 9 40 7 40 1 38 7 42 5 41 3 40 8 39 6 38 1 43 1 42 0 41 6 40 4...

Page 45: ...ible only Heating Liquid Line Thermistor Entering Load Thermistor Sensors are included in the optional Performance and Refrigeration monitoring controls option D Total Subcooling Heating Mode Only is...

Page 46: ...ction Coax Source Coax Suction Discharge VI Port Compressor o F PSIG SAT o F o F PSIG SAT o F TXV Electronic VIV Load Coax Injection Coax Source Coax Suction Discharge VI Port Compressor o F PSIG SAT...

Page 47: ...Watts m x n x 0 85 o _____ WATTS o ______ WATTS o ______ WATTS 6 CAPACITY Cooling Capacity HR o x 3 413 p _____ btu hr Heating Capacity HE o x 3 413 p _____ btu hr 7 EFFICIENCY Cooling EER p o q _____...

Page 48: ...will not reset until cooled down If the overload does not reset when cool it may be defective If so replace the compressor 9 The internal winding of the compressor motor may be grounded to the compre...

Page 49: ...inlet line of the water to refrigerant heat exchanger to the plastic pail Secure tightly to ensure that circulating solution does not spill refer to the Cleaning Connections illustration 6 Partially f...

Page 50: ...62I599 01 Load Coaxial Heat Exchanger copper 62I597 01 62I598 01 62I599 01 VI Coaxial Heat Exchanger 62I617 01 62I596 01 Safety Sensor High Pressure Switch SKHP650 Low Pressure Switch SKLPE40 Discharg...

Page 51: ...51 Notes AFFINITY SINGLE STAGE HYDRONIC WITH OPTIHEAT INSTALLATION MANUAL...

Page 52: ......

Page 53: ...scription Date By 1 16 3 Inch Larger Cabinet 29 Feb 2020 JM Misc Added Compressor Monitoring kit misc updates 5 Oct 2018 JM All Literature Creation 5 Feb 2015 MA AFFINITY SINGLE STAGE HYDRONIC WITH OP...

Page 54: ...design and specifications without notice Product Affinity Series Type Geothermal Hydronic Heat Pump with OptiHeat Size 3 5 Ton Single Speed Document Type Installation Manual Part Number IM2508WK6A Re...

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