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WaterFurnace NSKW06 Installation information
Summary of NSKW06
Page 1
Im2566wn 07/16 installation information water piping connections electrical data startup procedures preventive maintenance v ersat ec ultr a nsk w ins tallation manual geothermal hydronic heat pump nskw.
Page 3: Table of Contents
Versatec ultra nskw installation manual table of contents model nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 general installation information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4: Model Nomenclature
4 versatec ultra nskw installation manual model nomenclature nskw 08 h 6 0 a c 1-4 5-6 7 8 9 10 11 model nskw – versatec hydronic heat pump unit capacity 06, 08, 12, 17 reversible option h- heating only r- reversible voltage 6 – 220-240/50/1 7 – 380-420/50/3 hot water option 1 0 – no hot water gener...
Page 5
5 versatec ultra nskw installation manual safety considerations installing and servicing air conditioning and heating equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair or service heating and air conditioni...
Page 6: Water Quality
6 versatec ultra nskw installation manual general water-to-water heat pumps may be successfully applied in a wide range of residential and light commercial applications. It is the responsibility of the system designer and installing contractor to ensure that acceptable water quality is present and t...
Page 7: Field Connected Water Piping
7 versatec ultra nskw installation manual the proper water flow must be delivered to each unit whenever the unit heats or cools. To assure proper flow, the use of pressure/temperature ports is recommended to determine the flow rate. These ports should be located adjacent to the supply and return con...
Page 8
8 versatec ultra nskw installation manual 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 bladder type expansion tank to minimize mineral deposits. Ensure proper water flow through the unit by c...
Page 9
9 versatec ultra nskw installation manual field connected water piping cont. Earth coupled systems with flow center nce piping is completed between the unit, flow center and the earth loop, final purging and charging of the loop is needed. A pump capable of 14 m 3 /hr @ 25 meters of head is needed t...
Page 10: Potable Water Systems
10 versatec ultra nskw installation manual potable water systems tnskw06 kw heat pumps can be equipped with a double- wall vented coaxial heat exchanger capable of hot water generation (hwg). An optional factory-installed hot water generator coil may be provided with nskw08-17. The temperature of th...
Page 11: Potable Water Systems Cont.
11 versatec ultra nskw installation manual hot water generator connections the heat reclaiming hot water generator coil is vented double- wall copper construction and is suitable for potable water. To maximize the benefits of the hot water generator a minimum 50-gallon water heater is recommended. F...
Page 12: Hydronic Section
12 versatec ultra nskw installation manual hydronic section general guidelines are shown below for component selection and design/installation criteria for the piping system. Local codes supersede any recommendations in this manual. Shut off/flow regulation valves use full port ball valves or gate v...
Page 13: Hydronic Section Cont.
13 versatec ultra nskw installation manual hydronic section cont. If using a geothermal storage tank there will be two red wires exiting out of the top of the tank. These red wries extend internally down to the thermistor/tank thermostat section of the tank. Remove the bottom tank cover to expose th...
Page 14: Accessories and Options
14 versatec ultra nskw installation manual accessories and options geo storage tank dimensions electrical data 30° 30° to geo 150 cm dip tube approx. 2.54 cm t & p valve from geo primary anode 99 cm - 80 gallon 106.7 cm - 119 gallon cold inlet 132.0 cm dip tube hot outlet w/35.6 cm secondary anode h...
Page 15: Electrical Data Cont.
15 versatec ultra nskw installation manual electrical data cont. Load pump power block transformer run capacitor ground lug load pump relay compressor contactor circuit breakers source pump power block aurora base control board (abc) optional intellistart control box accessory relay a set of “dry” c...
Page 16: Wiring Schematics
16 versatec ultra nskw installation manual wiring schematics black blue 240v cc t2 t1 compressor c r s blue g l1 l2 220-240/50/1 unit power supply tan(10) capacitor oat sensor geotank sensor oat oat tank tank red (gnd) red (ts) hydrozone controller gnd ts oat gnd - + hzc r c o/b p v c1 c2 c3 c4 -- n...
Page 17: Wiring Schematics Cont.
17 versatec ultra nskw installation manual wiring schematics cont. Transformer 24v cc hp black black blue blue lp t yellow yellow fp1 black(15) violet(14) green(11) black/white yellow aid tool description sw2-4 sw2-5 cycle with blower on on cycle with compressor off off water valve slow opening on o...
Page 18
18 versatec ultra nskw installation manual wiring schematics - commercial aurora water-water - 380-420/50/3 black blue 420v oat sensor geotank sensor oat oat tank tank red (gnd) red (ts) hydrozone controller gnd ts oat gnd - + hzc r c o/b p v c1 c2 c3 c4 -- note 1 lpr lpr no nc com 24 vdc current tr...
Page 19
19 versatec ultra nskw installation manual wiring schematics - commercial cont. Aurora water-water - 380-420/50/3 transformer 24v cc hp black black blue blue lp t yellow yellow fp1 black(15) violet(14) green(11) black/white yellow aid tool description sw2-4 sw2-5 cycle with blower on on cycle with c...
Page 20: External Control
20 versatec ultra nskw installation manual external control an external controller is necessary for operation. For water storage tank set point control the hydrostat hzc, and hz0 may be used. A field supplied aquastat may also be used as the external control to the heat pump. If zoning is required, ...
Page 21: Unit Startup
21 versatec ultra nskw installation manual converting to a dedicated cooling unit procedure to convert a heating only unit to a cooling only unit all non-reversible units are built at the factory as dedicated heating units. Follow the procedures below to make the unit a dedicated cooling unit. 1. Sh...
Page 22
22 versatec ultra nskw installation manual the aurora base control system aurora control features description aurora ‘base’ microprocessor compressor control microprocessor control of compressor for timings with fp1, hp, lp, condensate, assignable acc relay • base hot water generator operation compr...
Page 23
23 versatec ultra nskw installation manual the aurora base control system cont. Aurora ‘base’ control note: refer to the aurora base control application and troubleshooting guide and the instruction guide: aurora interface and diagnostics (aid) tool for additional information. Control features • ran...
Page 24
24 versatec ultra nskw installation manual the aurora base control system cont. Fault retry – in the fault condition, the control will stage off the outputs and then “try again” to satisfy the thermostat y input call. Once the thermostat input calls are satisfied, the control will continue on as if ...
Page 25
25 versatec ultra nskw installation manual the aurora base control system cont. Cc2 eh1 fa ct ory fault al g al m ls es ac c c status aurora base control™ rv – k1 cc 2 cc – k2 cc hi – k3 fan – k4 alarm – k5 acc – k6 ac c n o ac c n c o/ b c r lo g y1 y2 w dh 3a -f us e o/ b c r lo g y1 y2 w dh lo g ...
Page 26: Reference Calculations
26 versatec ultra nskw installation manual reference calculations legend and notes he l/s x 4.2* heating calculations: cooling calculations: lwt = ewt + hr l/s x 4.2* lwt = ewt - note: * when using water. Use 4.1 for 15% methanol/water or environol solution. Abbreviations and definitions: cop = coef...
Page 27: Operating Limits
27 versatec ultra nskw installation manual operating limits pressure drop model l/s pressure drop (kpa) 0°c 15°c 25°c 35°c 50°c 06 0.25 6.2 4.8 4.1 3.4 2.8 0.35 13.8 13.1 12.4 11.7 10.3 0.45 22.1 20.7 20.0 19.3 17.9 0.55 30.3 29.0 27.6 26.2 25.5 08 0.30 6.2 4.1 3.9 3.7 3.4 0.45 15.9 14.1 13.4 12.8 1...
Page 28: Flow Rates
28 versatec ultra nskw installation manual flow rates thermistor table thermistor resistance physical data model source flow rates (l/s) load flow rates (l/s) minimum open loop minimum closed loop normal maximum minimum normal maximum 06 0.25 0.30 0.45 0.60 0.25 0.45 0.60 08 0.30 0.50 0.65 0.75 0.30...
Page 29: Operating Parameters
29 versatec ultra nskw installation manual operating parameters heating mode entering load temp (°c) entering source temp (°c) suction pressure (kpa) discharge pressure (kpa) superheat (°c) subcooling (°c) 15 -15 358-462 1344-1565 4-9 3-8 0 462-565 1434-1620 4-8 3-8 10 655-779 1489-1689 4-8 3-7 20 8...
Page 30: Antifreeze Correction
30 versatec ultra nskw installation manual antifreeze correction catalog performance can be corrected for antifreeze use. Please use the following table and note the example given. Antifreeze type antifreeze % by wt heating cooling pressure drop load source load source ewt - °c 26.7 -1.1 10.0 32.2 -...
Page 31
31 versatec ultra nskw installation manual troubleshooting guideline for refrigerant circuit the chart below will assist in determining if measurements taken at the unit are within factory specifications and aid in accurate diagnosis (symptom) and repair. The chart is general in nature and represent...
Page 32: Hr Data
32 versatec ultra nskw installation manual hr data heat of rejection (kw) table 06 source est °c source l/s load flow-0.25 l/s load flow-0.35 l/s load flow-0.45 l/s elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c 0 0.25 8.56 9.17 9.79 10...
Page 33: Hr Data Cont.
33 versatec ultra nskw installation manual heat of rejection (kw) table 12 source est °c source l/s load flow-0.25 l/s load flow-0.35 l/s load flow-0.45 l/s elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c 0 0.50 18.14 19.52 20.90 22.25 1...
Page 34: He Data
34 versatec ultra nskw installation manual he data heat of extraction (kw) table 06 source est °c source l/s load flow-0.25 l/s load flow-0.35 l/s load flow-0.45 l/s elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c 0 0.25 2.29 4.57 3.93 3...
Page 35: He Data Cont.
35 versatec ultra nskw installation manual he data cont. Heat of extraction (kw) table 12 source est °c source l/s load flow-0.25 l/s load flow-0.35 l/s load flow-0.45 l/s elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c elt 10°c elt 20°c elt 30°c elt 45 °c 0 0.50 11.02 9.70...
Page 36: Dhw He Cont.
36 versatec ultra nskw installation manual dhw he cont. 06 dhw heat of extraction (kw) table 06 source est °c source l/s load flow-0.25 l/s load flow-0.35 l/s load flow-0.45 l/s elt 15°c elt 25°c elt 40°c elt 50°c elt 15°c elt 25°c elt 40°c elt 50°c elt 15°c elt 25°c elt 40°c elt 50°c 0 0.25 5.25 4....
Page 37: Heating Cycle Analysis
37 versatec ultra nskw installation manual heating cycle analysis suction discharge compressor rv source coax fd ______kpa = ______sat°c ______°c ______kpa = ______sat°c ______°c ______°c liquid line unit amp draw line voltage loop: open closed subcooling superheat note: do not attach refrigerant ga...
Page 38
38 versatec ultra nskw installation manual startup and troubleshooting form check one start up/check-out for new installation t troubleshooting problem:___________________________________ t 1. Flow rate in l/s (source side heat exchanger) water in pressure: a.______ kpa water out pressure: b.______ ...
Page 39: Troubleshooting
39 versatec ultra nskw installation manual troubleshooting should a major problem develop, refer to the following information for possible causes and corrective steps: compressor won’t run 1. The fuse may be blown or the circuit breaker is open. Check electrical circuits and motor windings for short...
Page 40: Preventive Maintenance
40 versatec ultra nskw installation manual 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 tim...
Page 41: Service Parts
41 versatec ultra nskw installation manual service parts aurora controls part description 06 08 12 17 r efriger ation c omponents compressor 220-240/50/1 34p583-02 34p621-02 34p580-02 34p614-02 380-420/50/3 34p583-04 34p621-04 34p580-04 34p614-04 compressor capacitor 220-240/50/1 16p002d20 16p002d36...
Page 42: Technical Documentation
42 versatec ultra nskw installation manual model nskw06 type of heat pump air-water exhaust-water brine-water water-water low-temperature heat pump yes no yes no integrated immersion heater for additional heat yes no heat pump combination heater yes no yes no climate average cold warm temperature ap...
Page 43
43 versatec ultra nskw installation manual model nskw08 type of heat pump air-water exhaust-water brine-water water-water low-temperature heat pump yes no yes no integrated immersion heater for additional heat yes no heat pump combination heater yes no yes no climate average cold warm temperature ap...
Page 44
44 versatec ultra nskw installation manual model nskw12 type of heat pump air-water exhaust-water brine-water water-water low-temperature heat pump yes no yes no integrated immersion heater for additional heat yes no heat pump combination heater yes no yes no climate average cold warm temperature ap...
Page 45
45 versatec ultra nskw installation manual model nskw17 type of heat pump air-water exhaust-water brine-water water-water low-temperature heat pump yes no yes no integrated immersion heater for additional heat yes no heat pump combination heater yes no yes no climate average cold warm temperature ap...
Page 46: Notes
46 versatec ultra nskw installation manual notes.
Page 47: Revision Guide
47 versatec ultra nskw installation manual revision guide pages: description: date: by: all nskw commercial guide creation 28 june 2016 jm.
Page 48
Manufactured by waterfurnace international, inc. 9000 conservation way fort wayne, in 46809 www.Waterfurnace.Com ©2016 waterfurnace international, inc., 9000 conservation way, fort wayne, in 46809-9794. Waterfurnace has a policy of continual product research and development and reserves the right to...