Related Manuals for Water Furnace ENVISION NSW 018
Summary of Contents for Water Furnace ENVISION NSW 018
- Page 1 Geothermal Hydronic Heat Pump Commercial 1.5 to 6 Tons Installation Information Water Piping Connections Electrical Data Startup Procedures Preventive Maintenance IM1056WN 07/14...
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Page 3: Table Of Contents
NSW INSTALLATION MANUAL Table of Contents Model Nomenclature ............. . 4 General Installation Information . -
Page 4: Model Nomenclature
NSW INSTALLATION MANUAL Model Nomenclature 13-14 Model Vintage NSW = Envision Series A = NSW040 - NSW075 Hydronic Heat Pump B = NSW025 C = NSW018 Capacity 018 MBTUH Future Option 025 MBTUH SS = Standard Option 040 MBTUH 050 MBTUH Load Coax 060 MBTUH C = Copper... -
Page 5: General Installation Information
NSW INSTALLATION MANUAL General Installation Information WARNING: To avoid equipment damage, do not Safety Considerations leave the system filled in a building without heat Installing and servicing air conditioning and heating during cold weather, unless adequate freeze equipment can be hazardous due to system pressure and protection levels of antifreeze are used. -
Page 6: Contaminated Water
NSW INSTALLATION MANUAL Water Quality building’s piping system that the designer may need to take General into consideration when deciding the parameters of the NSW water-to-water heat pumps may be successfully water quality. applied in a wide range of residential and light commercial applications. -
Page 7: Field Connected Water Piping
NSW INSTALLATION MANUAL Field Connected Water Piping General to-water heat exchanger (See Pressure Drop Table for water flow and pressure drop information). Normally about 3 GPM Each unit is equipped with captive FPT water connections flow rate per ton of cooling capacity (2.25 GPM per ton to eliminate ‘egg-shaping’... -
Page 8: Potable Water Systems
NSW INSTALLATION MANUAL Field Connected Water Piping cont. Typical Closed Loop Earth Coupled Installation Earth Coupled Systems with Flow Center Once piping is completed between the unit, flow center and the earth loop, final purging and charging of the loop is needed. -
Page 9: Hot Water Generator Connections
NSW INSTALLATION MANUAL Potable Water Systems cont. NOTES: Hot Water Generator Connections 1) Unions and valves must be installed so that acid flushing The heat reclaiming hot water generator coil is vented double- of the heat exchanger is possible. wall copper construction and is suitable for potable water. To 2) Route thermistor wires to NSW. -
Page 10: Hydronic Section
NSW INSTALLATION MANUAL Hydronic Section General guidelines are shown below for component 0 psi (0 kPa), potentially causing pumps(s) failure. A valve selection and design/installation criteria for the piping should be installed on each side of the pressure reducing system. Local codes supersede any recommendations in valve for servicing. - Page 11 NSW INSTALLATION MANUAL Hydronic Section cont. If using a Geothermal Storage tank there will be two red WaterFurnace Geothermal Storage Tank Thermostat and Thermistor wires exiting out the top of the tank. These red wires extend internally down to the thermistor/tank thermostat section of the tank.
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Page 12: Accessories And Options
NSW INSTALLATION MANUAL Accessories and Options Earth Loop Pump Kit (Field Installed) UPS15-42RU Three-Speed Pump Curve A specially designed one or two-pump module provides all UPS15-42RU 3-Speed Pump liquid fl ow, fi ll and connection requirements for independent UPS15-42RU (Low) single unit systems (230/60/1 only). - Page 13 NSW INSTALLATION MANUAL Accessories and Options cont. Geo Storage Tank Dimensions From Geo To Geo 59˝ Dip Tube 1˝ x 3˝ Nipple w/1˝ x 3˝ Nipple PRIMARY ANODE 39˝ - 80 Gallon 42˝ - 119 Gallon 8˝ HOT OUTLET 3/4˝ COLD INLET 3/4˝...
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Page 14: Electrical Data
NSW INSTALLATION MANUAL Electrical Data Compressor Rated Voltage Load Source Total Unit Min Ckt Maximum Model Voltage Min/Max Pump Pump Fuse/HACR LRA* 208-230/60/1 197/254 48.0 17.0 16.2 18.5 208-230/60/1 197/254 13.5 61.0 21.4 20.7 24.1 265/60/1 239/292 10.9 58.0 10.9 13.6 460/60/3 414/506... -
Page 15: Volt Operation
NSW INSTALLATION MANUAL Electrical Data cont. 208 Volt Operation NSW Control Box Relocation All 208-230 volt units are factory wired for 230 volt The NSW control box can be installed on the rear of the unit. operation. To convert the unit from a 230V unit to a 208V To relocate the control box, follow the procedures below. -
Page 16: Wiring Schematics
NSW INSTALLATION MANUAL Wiring Schematics For all NSW 208/230 volt single-phase units, the circulator wiring is as shown in the illustrations below. The internal relay and fusing allow for external pumps no larger than .5 horsepower. The external loop pump connections mentioned in this manual include a dedicated flow center for each unit as well as an NSW unit connected to another unit containing a microprocessor. - Page 17 NSW INSTALLATION MANUAL Wiring Schematics cont. Multiple Units on a Single Flow Center Wiring WATER TO AIR HEAT PUMP CONTROL SHUT DOWN SL1 IN SL 1 OUT Used COMPRESSOR CAPACITOR CONTACTOR FUSE 13P003B RELAY BLOCKS (FIELD SUPPLIED) TRANSFORMER WATER TO WATER CONTROL BOX...
- Page 18 NSW INSTALLATION MANUAL Wiring Schematics - Residential NSW Heating Only - 208-230/60/1 Compressor External External Blue Black Load Source Pump Pump NOTE 2 Unit Power Supply 208-230/60/1 Blue/Wht Brown/Blk Brown/Wht Brown Blue Blue Black 230V Green/Yellow 208V NOTE 1 Transformer Black Black/ Yellow...
- Page 19 NSW INSTALLATION MANUAL Wiring Schematics - Residential cont. NSW Reversible with IntelliStart - 208-230/60/1 Compressor External External Blue Run Winding IntelliStart Load Pink Active Source Pump Pump Blue Start Black Black Common Black NOTE 2 Unit Power Supply 208-230/60/1 Brown/Blk Blue/Wht Brown/Wht Brown...
- Page 20 NSW INSTALLATION MANUAL Wiring Schematics - Commercial NSW Heating Only - 208-230/60/3 Compressor Blue Black Unit Power Supply 208-230/60/3 Blk/Wht (69) Yellow (68) Green/Yellow (67) 5VDC Black (20 ) Black (40) Brown (41) Brown (42) Black (19 ) White (43) Wht/Blu (44) Black (38) Black (18)
- Page 21 NSW INSTALLATION MANUAL Wiring Schematics - Commercial cont. NSW Heating Only - 208-230/60/3 Field Connection Diagram (For units using Set Point control mode Red 208V with or without a secondary unit . ) NOTE 1 Transformer NOTE 7 NOTE 6 Black Blue 230V 24VAC...
- Page 22 NSW INSTALLATION MANUAL Wiring Schematics - Commercial cont. NSW Reversible - 575/460/3 Compressor Blue Black Black Blue Unit Power Supply 460/60/3 575/60/3 Blk/Wht (69) Yellow (68) Green/Yellow (67) 5VDC Black (20) Black (40) Brown (41) Brown (42) Black (19) White (43) Wht/Blu (44) Black (38) Black (18)
- Page 23 NSW INSTALLATION MANUAL Wiring Schematics - Commercial cont. NSW Reversible - 575/460/3 Field Connection Diagram (For units using Set Point control mode with or without a secondary unit . ) Transformer NOTE 6 NOTE 5 24VAC 24V COM Blk/Wht Load Flow Load Valve Output Proving Switch NOTE 8...
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Page 24: External Control
NSW INSTALLATION MANUAL External Control Primary Mode Secondary Mode In dedicated heating or cooling units, the unit is controlled In dedicated heating or cooling units, secondary mode by the internal controller. Compressor output is determined allows the unit to be controlled by an external source. by the entering load-side water temperature. - Page 25 NSW INSTALLATION MANUAL External Control cont. Wiring for Primary/Secondary Unit Staging Staging with Primary/Secondary Mode Staging is only possible with dedicated heating or cooling units. Reversible units cannot be staged. Staging can be accomplished with primary/secondary modes or by using an aquastat.
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Page 26: Converting To A Dedicated Cooling Unit
NSW INSTALLATION MANUAL Converting to a Dedicated Cooling Unit Procedure to Convert a Heating Only Unit to a 13. Open the control box. Cooling Only Unit 14. Find the connection marked “P4” as shown in the Control Board with Jumper illustration. All non-reversible NSW units are built at the factory as 15. -
Page 27: Unit Startup
NSW INSTALLATION MANUAL Unit Startup Before Powering Unit Secondary Unit Startup Check the following: Apply power to the unit. • High voltage wiring is correct and matches the nameplate. 2. After a three to five-minute delay, the water temperature • Fuses, breakers and wire size are correct. shall be sampled. -
Page 28: Standard Board - Control Features
NSW INSTALLATION MANUAL Standard Board - Control Features Anti Short Cycle Time Test Mode The anti short cycle time consists of a three minute Connection of a jumper wire from chassis ground to P3 minimum “off” time plus a randomly chosen 0-2 minute will place the control in the test mode. - Page 29 NSW INSTALLATION MANUAL Standard Board - Control Features cont. fault. If the fault activity ceases while the system is Freeze Detection Probe Closed (dC) inactive, the fault code is cleared from the display and Compressor and pump operation will be disabled operation is permitted.
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Page 30: Standard Control - Panel Configuration
NSW INSTALLATION MANUAL Standard Control - Panel Confi guration The control panel allows you to access the service menu Control Panel on the unit. The control panel has three 7-segment LED screens that display the: • Water temperature • Configuration menu There are six (6) LED indicators that indicate when the SECONDARY OUTPUT is active or the unit is on one of the following modes:... - Page 31 NSW INSTALLATION MANUAL Standard Control - Panel Confi guration cont. Remote Aquastat Secondary Mode (Y1) In secondary mode the compressor output is determined by an external aquastat. The compressor shall engage 10 seconds after the Y1 call has been received. The compressor shall de-activate 10 seconds after the Y1 has been removed. The secondary output is controlled by a Derivative Controller.
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Page 32: Optional Controls
NSW INSTALLATION MANUAL Optional Controls FX10 Control The most unique feature is integrating the FX10 into the Envision Series as both the heat pump and DDC controller The FX10 control provides unparalleled capability providing both a cost advantage and providing features in several areas including performance monitoring, not typically found on WLHP controls. - Page 33 NSW INSTALLATION MANUAL Optional Controls - FX10 cont. FX10 Advanced Control Overview • The Johnson Controls FX10 board is specifically designed for commercial heat pumps and provides control of the entire unit as well as input ports for Open N2, LonTalk, BACnet (MS/TP @ 19,200 Baud Rate) communication protocols as well as an input port for a user interface.
- Page 34 NSW INSTALLATION MANUAL Optional Controls - FX10 cont. DDC Operation and Connection FX10 Microprocessor and BAS System Other optional network protocol boards that can be added to the FX10 are: • Johnson Control N2 • LonWorks • BACnet - MS/TP @ 19,200 Baud rate - Limit devices to 40 on a single trunk line.
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Page 35: Sequence Of Operation
NSW INSTALLATION MANUAL Optional Controls - FX10 cont. NSW Freeze Detection Sequence of Operation The freeze detection sensor will monitor the liquid Power Fail Restart refrigerant temperature entering the water coil in the When the controller is first powered up, the outputs will heating mode. -
Page 36: Inputs And Outputs Configuration
NSW INSTALLATION MANUAL Optional Controls - FX10 cont. Inputs and Outputs Configuration Control Accessories Field Selectable Options • A99 Sensor • MUI (LCD User interface) for diagnostics Load and Source Freeze Detection Setpoint and commissioning The freeze detection setpoint input allows you to •... -
Page 37: Reference Calculations
NSW INSTALLATION MANUAL Reference Calculations Heating Calculations: Cooling Calculations: LWT = EWT - LWT = EWT + GPM x C* GPM x C* HE = C* x GPM x (EWT - LWT) HR = C* x GPM x (LWT - EWT) NOTE: * C = 500 for pure water, 485 for brine. -
Page 38: Ahri/Iso 13256-2 Performance Ratings
NSW INSTALLATION MANUAL AHRI/ISO 13256-2 Performance Ratings English (IP) Units Water Loop Heat Pump Ground Water Heat Pump Cooling Heating Cooling Heating Flow Rate 86°F Source 68°F Source 59°F Source 50°F Source Capacity Model 53.6°F Load 104°F Load 53.6°F Load 104°F Load Modulation Energy... -
Page 39: Pressure Drop
NSW INSTALLATION MANUAL Pressure Drop NSW Vented Only Load Side Pressure Drop (psi) Model 30°F 60°F 80°F 100°F 120°F Pressure Drop (psi) Model 60°F 80°F 100°F 120°F 018R* 018H 025R* 025H 040H/R 7/13/09 NOTES: Temperatures are Entering Water Temperatures. 10.0 Double wall vented coax for heating potable water 12.5 11.5... -
Page 40: Physical Data
NSW INSTALLATION MANUAL Physical Data Model Compressor (1 each) Scroll Factory Charge R410a, oz [kg] 44.0 [1.25] 58.0 [1.64] 82 [2.32] 68 [1.93] 104 [2.95] 110 [3.12] Coax & Piping Water Volume - gal [l]* .52 [1.97] .89 [3.38] 1.0 [3.94] 1.4 [5.25] 1.6 [6.13] 1.6 [6.13]... -
Page 41: Operating Parameters
NSW INSTALLATION MANUAL Operating Parameters Heating Mode Entering Entering Suction Discharge Superheat Subcooling Load Temp (°F) Source Temp (°F) Pressure (psig) Pressure (psig) (°F) (°F) 52-67 195-227 8-16 5-15 67-82 208-235 7-14 6-14 95-113 216-245 7-14 6-12 124-144 225-255 8-19 5-15 143-167 230-275... -
Page 42: Antifreeze Correction
NSW INSTALLATION MANUAL Antifreeze Correction Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given. Heating Cooling Antifreeze % Pressure Antifreeze Type by wt Drop Load Source Load Source EWT - °F [°C] 80 [26.7] 30 [-1.1] 50 [10.0]... -
Page 43: Troubleshooting Guideline For Refrigerant Circuit
NSW 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 represents whether a symptom would result in normal, high, or low readings from the typical operating range. -
Page 44: Heating And Cooling Cycle Analysis
NSW INSTALLATION MANUAL Heating Cycle Analysis Cooling Cycle Analysis... -
Page 45: Troubleshooting Form
NSW INSTALLATION MANUAL Envision NSW Startup and Troubleshooting Form Company Name: _________________________________ Company Phone No: ______________________________ Technician Name: ________________________________ Date: __________________________________________ Model No: ______________________________________ Serial No:_______________________________________ Owner’s Name: __________________________________ Open or Closed Loop: _____________________________ Installation Address: ______________________________ Installation Date: _________________________________ Check One Start up/Check-out for new installation Troubleshooting... -
Page 46: Troubleshooting
NSW INSTALLATION MANUAL Troubleshooting Should a major problem develop, refer to the following 9. The internal winding of the compressor motor may be information for possible causes and corrective steps: grounded to the compressor shell. If so, replace the compressor. 10. - Page 47 NSW INSTALLATION MANUAL Troubleshooting cont. Check the jumpers on the control board: Troubleshooting Controls Refer to the Control Board with Jumper illustration in Check the unit. If a lockout mode is displayed, refer to the the Converting to a Dedicated Cooling Unit section to table below to determine the meaning of the failure.
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Page 48: Preventive Maintenance
NSW INSTALLATION MANUAL Preventive Maintenance Keep all air out of the water lines. An open loop system 4. Connect a plastic hose from the circulating pump inlet should be checked to ensure that the well head is not to the bottom of a plastic five (5) gallon pail (refer to allowing air to infiltrate the water line. -
Page 49: Service Parts
NSW INSTALLATION MANUAL Service Parts 025R Part Description 208-230/60/1 208-230/60/1 208-230/60/1 208-230/60/1 208-230/60/1 208-230/60/1 Compressor 208-230/60/1 34P657-01 34P568-05 34P621-01 34P580-01 34P616-01 34P614-01 265/60/1 34P568-06 34P580-02 230/60/3 34P621-03 34P580-03 34P616-03 34P614-03 460/60/3 34P568-08 34P621-04 34P580-04 34P616-04 34P614-04 575/60/3 34P621-05 34P580-05 34P616-05 34P614-05 Compressor Capacitor 208-230/60/1 16P002D18... -
Page 50: Revision Guide
NSW INSTALLATION MANUAL Revision Guide Pages: Description: Date: Updated NSW018 Revision Level 26 Mar 2013 Updated NSW018 Electrical Data 26 Mar 2013 Minor Formatting Corrections 13 Nov 2012 Added Water Connection Kits 13 Nov 2012 28, 30 Updated Cooling Setpoint Values 13 Nov 2012 Updated AHRI Data Table 13 Nov 2012... - Page 52 Manufactured by WaterFurnace International, Inc. 9000 Conservation Way Fort Wayne, IN 46809 www.waterfurnace.com Product: Envision NSW Type: Geothermal Hydronic Heat Pump Size: Commercial 1.5-6 Tons Document: Installation Manual IM1056WN 07/14 ©2014 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 change design and specifi...
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