SPECIFICATION CATALOG - WaterFurnace

1 SPECIFICATION CATALOGGEOTHERMAL/WATER SOURCEINDOOR SPLIT HEAT PUMP2 TO 6 TON SINGLE SPEED2 TO 6 TON DUAL CAPACITYNSZ/NDZ INDOOR SPLIT SPECIFICATION CATALOGT able of ContentsIntroduction ..4 Model .Nomenclature ..5 AHRI .Data ..6-7 Design .Features ..8 Envision .Indoor .Split .Features ..9 Physical .Data ..9 Dimensional .Data ..10 Model .Nomenclature .- .Envision .Air .Handler ..11 Air .Handler .Compatibility ..11 Model .Nomenclature .- .Envision .Coil ..12 Refrigerant .Coil .Compatibility ..12 Physical .Data .- .Envision .Air .Handler ..13 Line .Set .Sizes ..14 Electrical .Data ..14 Reference .Calculations ..15 Legend .and .Notes ..15 Operating .Limits ..16 Operating .Parameters ..16-17 Pressure .Drop ..18 Performance .Data ..19-35 Wiring .Schematics ..36-37 Microprocessor .Control ..38-41 Thermostat .Wiring ..41 Engineering .Guide .Specifications ..424 NSZ/NDZ INDOOR SPLIT SPECIFICATION CATALOGE nvision series splits are designed for indoor installations, and are connected to an indoor air handler via refrigerant lines and control wiring.

2 Envision units utilize the ozone-safe R-410A refrigerant to meet the most stringent EPA requirements now and for many years to come. Easily accessible controls and connections for refrigerant piping and water piping make this unit simple to install in a wide variety of applications. Heavy gauge metal cabinets are coated with durable polyester powder coat paint for long lasting beauty and protection. The Envision series split will provide exceptional performance and comfort for many years. And because there is no outdoor blower like ordinary air conditioners or heat pumps, the Envision is whisper quiet . Envision series units are performance-certified to AHRI ISO 13256-1 standards, are ETL safety listed, and are ENERGYSTAR a leader in the industry, WaterFurnace is dedicated to innovation, quality and customer satisfaction. In fact, every unit built is exposed to a wide range of quality control procedures throughout the assembly process and is then subjected to a rigorous battery of computerized run tests to certify that it meets or exceeds performance standards for efficiency and safety, and will perform flawlessly at startup.

3 As further affirmation of our quality standards, each unit carries our exclusive Quality Assurance emblem, signed by the final test technician. WaterFurnace International s corporate headquarters and manufacturing facility is located in Fort Wayne, IN. A scenic three-acre pond located in front of the building serves as our geothermal heating and cooling source to comfort-condition our 110,000 square feet of manufacturing and office space. As a pioneer, and now a leader in the industry, the team of WaterFurnace engineers, customer support staff and skilled assembly technicians is dedicated to providing the finest comfort systems choosing or specifying WaterFurnace Envision series products, you can be assured that your customer is investing in an exceptional comfort system and peace of mind for many years to come. All Envision series product is safety listed under UL1995 thru ETL and performance listed with AHRI in accordance with standard 13256-1. The Envision series is also Energy Star INDOOR SPLIT SPECIFICATION CATALOGM odel Nomenclature123 NSZ4-60487A819110A11 CModel Type N = EnvisionCompressor Type D = Dual Capacity S = Single SpeedCabinet Configuration Z = Indoor SplitUnit CapacityVintage A = CurrentVoltage 1 = 208-230/60/1 Coax Options C = Copper N = CupronickelFuture Option A = StandardHot Water Options 0 = No Hot Water Generation, No IntelliStart 1 = Hot Water Generation with factory installed pump, No IntelliStart 3 = No Hot Water Generation, IntelliStart 4 = Hot Water Generation with factory installed pump, IntelliStart6 NSZ/NDZ INDOOR SPLIT SPECIFICATION CATALOGAHRI DataCooling capacities based upon F DB, F WB entering air temperatureHeating capacities based upon 68 F DB, 59 F WB entering air temperatureAll ratings based upon operation at the lower voltage of dual voltage rated to the air handler compatibility table for matching air 13256-1 English (IP)

4 UnitsModelCapacity ModulationFlow RateWater Loop Heat PumpGround Water Heat PumpGround Loop Heat PumpCooling Brine EWT 86 FHeating Brine EWT 68 FCooling EWT 59 FHeating EWT 50 FCooling Brine Full Load 77 FPart Load 68 F Heating Brine Full Load 32 FPart Load 41 F gpm cfm Capacity Btu/h EER Btu/h/W Capacity Btu/h COP Capacity Btu/h EER Btu/h/W Capacity Btu/h COP Capacity Btu/h EER Btu/h/W Capacity Btu/h COP026 Full8900 25,000 30,500 27,800 25,000 26,200 19,500 18,500 22,000 21,300 17,700 21,000 16,200 34,000 40,100 34,300 33,100 35,000 25,700 25,000 30,000 25,200 24,400 27,000 22,100 45,900 56,800 50,500 46,700 47,700 37,000 35,000 43,000 37,300 33,000 38,000 30,500 56,300 67,100 63,800 55,800 59,100 43,200 42,900 49,500 50,000 41,000 47,900 36,800 60,400 80,600 67,900 63,100 62,700 50,300 49,700 60,200 57,200 48,400 53,800 42,800 19,700 23,500 23,300 18,900 21,800 14,000 25,800 32,000 28,500 25,300 26,800 19,700 31,400 37,600 33,900 30,000 31,900 24,000 39,000 41,400 42,900 33,000 39,900 25,300 44,200 55,400 48,900 45,100 46,200 35,300 54,600 66,300 62,300 52,900 57,000 44,500 60,200 76,000 68,500 63,000 63,200 50,800 Star Compliance TableModelTier 2 Tier 3 Ground WaterGround LoopGround WaterGround Loop026 YesYesYesYes038 YesYesYesYes049 YesYesYesYes064 YesYesYesYes072 YesYesNoYes022 YesYesYesYes030 YesYesYesYes036 YesYesYesYes042 YesYesYesYes048 YesYesYesYes060 YesYesYesYes070 YesNoNoNoNOTE: This product meets Energy Star requirements when purchased with a minimum 5 year warranty and appropriate coil components are used.

5 Ask your contractor for Star Rating CriteriaIn order for water-source heat pumps to be Energy Star rated they must meet or exceed the minimum efficiency requirements listed below. Please note there are 3 Tier levels that dictate minimum efficiency for water source pumps. Only one tier level is active at a given moment. Tier 2: 1/1/2011 12/31/2011 EER COPC losed loop water-to-air loop water-to-air Closed loop water-to-water loop water-to-water Tier 3: 1/1/2012 No Effective End Date Published EER COPC losed loop water-to-air loop water-to-air Closed loop water-to-water loop water-to-water INDOOR SPLIT SPECIFICATION CATALOGThe performance standard AHRI/ASHRAE/ISO 13256-1 became effective January 1, 2000 and replaces ARI Standards 320, 325, and 330. This new standard has three major categories: Water Loop (comparable to ARI 320), Ground Water (ARI 325), and Ground Loop (ARI 330). Although these standards are similar there are some differences:Unit.

6 Of .Measure: .The .Cooling .COPThe cooling efficiency is measured in EER (US version measured in Btu/h per Watt. The Metric version is measured in a cooling COP (Watt per Watt) similar to the traditional COP .Conditions .DifferencesEntering water temperatures have changed to reflect the centigrade temperature scale. For instance the water loop heating test is performed with 68 F (20 C) water rounded down from the old 70 F ( C).Air .Conditions .DifferencesEntering air temperatures have also changed (rounded down) to reflect the centigrade temperature scale. For instance the cooling tests are performed with F (27 C) dry bulb and F (19 C) wet bulb entering air instead of the traditional 80 F ( C) DB and 67 F ( C) WB entering air temperatures. data may be converted to 80/67 using the entering air correction table. This represents a significantly lower relative humidity than the old 80/67 of 50% and will result in lower latent .Power .Correction .CalculationWithin each model, only one water flow rate is specified for all three groups and pumping Watts are calculated using thefollowing formula.)

7 This additional power is added onto the existing power consumption. Pump power correction = (gpm x ) x (Press Drop x 2990) / 300 Where gpm is waterflow in gpm and Press Drop is the pressure drop through the unit heat exchanger at rated water flow in feet of .Power .Correction .CalculationBlower power is corrected to zero external static pressure using the following equation. The nominal airflow is rated at a specific external static pressure. This effectively reduces the power consumption of the unit and increases cooling capacity but decreases heating capacity. These Watts are significant enough in most cases to increase EER and COPs fairly dramatically over ARI 320, 325, and 330 ratings. Blower Power Correction = (cfm x ) x (esp x 249) / 300 Where cfm is airflow in cfm and esp is the external static pressure at rated airflow in inches of water .Capacity .and .Efficiency .CalculationsThe following equations illustrate cooling calculations: ISO Cooling Capacity = Cooling Capacity (Btu/h) + (Blower Power Correction (Watts) x ) ISO EER Efficiency (W/W) = ISO Cooling Capacity (Btu/h) x / [Power Input (Watts) - Blower Power Correction (Watts) + Pump Power Correction (Watt)]The following equations illustrate heating calculations: ISO Heating Capacity = Heating Capacity (Btu/h) - (Blower Power Correction (Watts) x ) ISO COP Efficiency (W/W) = ISO Heating Capacity (Btu/h) x / [Power Input (Watts) - Blower Power Correction (Watts) + Pump Power Correction (Watt)]Comparison.

8 Of .Test .ConditionsConversions: Airflow (lps) = cfm x ; WaterFlow (lps) = GPM x ; ESP (Pascals) = ESP (in wg) x 249; Press Drop (Pascals) = Press Drop (ft hd) x 2990 ARI 320 ISO/AHRI 13256-1 WLHPARI 325 ISO/AHRI 13256-1 GWHPARI 330 ISO/AHRI 13256-1 GLHPC oolingEntering Air - DB/WB F80 Water - F858650/70597777 Fluid Flow Rate**HeatingEntering Air - DB/WB F706870687068 Entering Water - F706850/70503232 Fluid Flow Rate**Note *: Flow rate is set by 10 F rise in standard cooling testNote **: Flow rate is specified by the manufacturerPart load entering water conditions not = Water Loop Heat Pump; GWHP = Ground Water Heat Pump; GLHP = Ground Loop Heat PumpAHRI Data INDOOR SPLIT SPECIFICATION CATALOGA pplication Flexibility Safe, efficient operation in a wide range of liquid temperatures (25 F to 110 F) and flow rates (as low as gpm/ton in open loop applications when EWT >50 F). Easily accessible loop pump Efficiencies Environmentally friendly R-410A refrigerant.

9 LED fault and status lights with memory for easy diagnostics. Accumulator on all models for compressor reliability. AHRI 13256-1 rating for heating COPs, cooling EERs and low water flow requirements. Optional hot water generator provides hot water at considerable savings while improving overall system efficiency. High-stability expansion valve delivers optimum refrigerant flow over a wide range of conditions. Efficient Copeland scroll compressors in all units. Oversized coaxial tube water-to-refrigerant heat exchanger operates at low liquid pressure drops. Convoluted copper water tube functions efficiently at low flow rates, and provides freeze-damage resistance. Service Advantages Easily removable top, front and side access panels. Easily accessible thermal expansion valve. Brass, swivel-type water connections for ease of installation. High- and low-pressure service ports in refrigerant circuit. Swing-out control box providing easy access to all Quality All units are manufactured on an automated testing assembly line.

10 This assembly line features monitoring and assembly processes that lead the industry such as: - Component verification through bar codes. - Multiple automatic leak and pressure tests. - Performance of a water-based run test measuring both functionality and performance of the unit. - Database management of all run test parameters for service analysis. - Integrated fail safe system that prevents packaging of a failed unit. Heavy-gauge steel cabinets are painted with durable polyester powder coat paint for long lasting beauty and service. All refrigerant brazing is performed in a nitrogen atmosphere. All units are deep evacuated to less than 150 microns prior to refrigerant charging. All joints are helium leak-tested to ensure an annual leak rate of less than 1/4 ounce. Refrigerant suction lines, hot water generator coil, and all water pipes are fully insulated to reduce condensation problems in low temperature operation. Noise reduction features: Double isolation mounted compressors, insulated cabinet using 1/2-inch coated glass fiber.