Related Manuals for WaterFurnace E Series
Summary of Contents for WaterFurnace E Series
- Page 1 50 hz hydronic heat PumPs • R-410A RefRigeRAnt • 6 thRu 17 kW Installation Information Water Piping Connections Electrical Startup Procedures Troubleshooting Preventive Maintenance GIMEKW-E November 2008...
- Page 2 EKW INSTALLATION MANUAL Model Nomenclature EKW Series R-410A Hydronic Heat Pump (06 - 17 kW) 10-11 Family Vintage EKW = E Series 50 hz B = Current Hydronic Heat Pump Non-Standard Options Unit Capacity S = Standard 06 kW A-R, T-Z = Nonstandard Options...
-
Page 3: Table Of Contents
EKW INSTALLATION MANUAL Table of Contents general installation information Accessories & Other Options Potable Water Systems Open Loop Systems earth Coupled Systems electrical Dimensional Data, Physical elements & Sound Data electrical Schematics 13-14 external Control 15-16 Staging 17-18 Converting to a Dedicated Cooling unit unit Startup Control Panel, Parameters & Operation Modes 21-22 Capacity Data 23-39 flow Rates & Pressure Drop troubleshooting 41-42 Preventive Maintenance Disposal/Recycling Section... -
Page 4: General Installation Information
EKW INSTALLATION MANUAL General Installation Information Safety Considerations Before performing service or maintenance operations on the system, disconnect all WARning: power sources to unit. electrical shock could cause personal injury. Before applying power to the unit, make sure that all panels and screws are in place. failure to do so could cause risk of electri- cal shock. Safety Advisements Installation and servicing of heating and air conditioning equipment can be hazardous due to system pressure and elec- trical components. Only trained and qualified service personnel should install, repair or service heating and air conditioning equipment. -
Page 5: Accessories & Other Options
EKW INSTALLATION MANUAL Accessories and Other Options Desuperheater (Factory Installed, EKW08 to EKW17 only) An optional heat reclaiming desuperheater coil constructed of vented double-wall copper construction suitable for potable water is available. The coil is factory mounted inside the unit. Load-side Pump Kit (Field Installed) Load pump kits are available to provide all liquid flow requirements for independent single unit systems. -
Page 6: Potable Water Systems
EKW INSTALLATION MANUAL Potable Water Systems The EKW06 heating only model is designed to provide primary hot water generation. An optional factory-installed desuperheater coil may be provided with an EKW08, 12 or 17 to assist in the generation of domestic hot water. With either option, the coaxial heat exchangers provide double-wall construction and are vented to allow installation in potable water applications. - Page 7 EKW INSTALLATION MANUAL Potable Water Systems Figure 5: Alternate Hot Water Installation EXPAN SION TANK IF REQUIRED COLD WATER OUT WATER IN FLOW CENTER P & T RELIEF TO FLOOR DRAIN DIP TUBE SOURCE LOAD BOILER DRAIN PT PORTS E KW06 ELECTRIC WATER H E ATER...
-
Page 8: Open Loop Systems
EKW 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 checking pressure drop across the heat exchanger and comparing it to the figures in the capacity data tables in the specification catalog. -
Page 9: Earth Coupled Systems
EKW INSTALLATION MANUAL 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. A flush cart (at least a 1.5 HP or 1.12 kW pump) is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from the loop itself. -
Page 10: Electrical
EKW INSTALLATION MANUAL Electrical Compressor Unit Rated Voltage Total Unit Min Ckt Model Voltage Min/Max Fuse Ckt Brk 220-240/50/1 198/264 10.9 58.0 10.9 13.6 EKW06 380-420/50/3 342/462 26.0 220-240/50/1 198/264 15.4 82.0 15.4 19.3 EKW08 380-420/50/3 342/462 35.0 220-240/50/1 198/264 21.1 136.0 21.1... -
Page 11: Sound Data
EKW INSTALLATION MANUAL DIMENSIONAL DATA Load Load Source Source Unit Desuperheater Desuperheater Liquid Liquid Liquid Liquid Model in [mm] in [mm] in [mm] In FPT in Out FPT in in FPT in out FPT in out FPT in in FPT in EKW06 25.5 [648] 26.3 [668] 18.0 [457]... -
Page 12: Electrical
EKW INSTALLATION MANUAL Electrical Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable. Refer to the Unit Electrical Data on page 10 for wire and fuse or circuit breaker sizing information. -
Page 13: Schematics
EKW INSTALLATION MANUAL Schematics For all single-phase units, the circulator wiring is as shown in Figures 8 and 9 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 EKW unit connected to a “PK”... - Page 14 EKW INSTALLATION MANUAL Schematics Figure 10: Multiple Units on a Single Flow Center Wiring EK SERIES CONTROL SHUT DOWN Used CAPACITOR FUSE WFI 13P003B RELAY BLOCKS (FIELD SUPPLIED) TRANSFORMER CONTROL BOX...
-
Page 15: External Control
EKW INSTALLATION MANUAL External Control Primary Mode In dedicated heating/cooling units, the unit is controlled by the internal controller. Compressor output is determined by the entering load-side water temperature. The secondary output will be energized if two conditions occur: The initial temperature is greater than IC away from the set point. - Page 16 EKW INSTALLATION MANUAL Wiring an Aquastat Reversible Unit • To create a secondary unit, set SL to 1 in the configuration menu. • Positon the jumper wire in the control box across terminals 5 & 6. Figure 12: Aquastat Wiring for Reversible Unit Typical Aquastat Secondary Unit (SL=1)
-
Page 17: Staging
EKW INSTALLATION MANUAL Staging with Primary/Secondary Mode Staging is only possible with dedicated heating/cooling units. Reversible units cannot be staged. Staging can be accomplished with primary/secondary modes or by using an aquastat. CAutiOn: Do not stage more than 6 units. The first stage must be setup as a primary unit. All other units must be setup as secondary units. The set point is stored in the primary unit. - Page 18 EKW INSTALLATION MANUAL Staging with Aquastat When staging units using an Aquastat, all units must be setup as secondary units. Figure 14 shows wiring for staging with an Aquastat. CAutiOn: Do not stage more than 6 units. Secondary Unit Secondary Unit Figure 14: Wiring for Dedicated Heating/Cooling Units (SL=1) (SL=1) Typical Aquastat...
-
Page 19: Converting To A Dedicated Cooling Unit
EKW INSTALLATION MANUAL Converting to a Dedicated Cooling Unit Procedure to Convert a heating Only Unit to a Cooling Only Unit All non-reversible EKW units are built at the factory as dedicated heating units. Follow the procedures below to make the unit a dedicated cooling unit. -
Page 20: Unit Startup
EKW INSTALLATION MANUAL Unit Startup Before Powering Unit Check the following: • High voltage wiring is correct and matches the nameplate. • Fuses, breakers and wire size are correct. • Piping is completed and water system has been cleaned and flushed. •... -
Page 21: Control Panel, Parameters & Operation Modes
EKW INSTALLATION MANUAL Control Panel The control panel allows you to access the service menu on the unit. The control panel has three 7-segment LED screens that display the: • Water temperature • Configuration menu There are 6 LED indicators that indicate when SECONDARY OUTPUT is active or the unit is on one of the following modes: •... - Page 22 EKW INSTALLATION MANUAL Remote Aquastat Secondary Mode (y1) 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. If the change in the water temperature is less than a selected value (d) in a selected period of time (P), the secondary output shall activate.
- Page 23 EKW INSTALLATION MANUAL ARI/ISO/BS EN Ratings ARi/iSO 13256-2 english (iP) units Ground Loop Heat Pump Cooling Heating Load Liquid Source Liquid Unit Model Flow (gpm) Flow (gpm) ELT 50°F EST 80°F ELT 104°F EST 32°F Capacity Btuh EER Btuh/W Capacity Btuh EKW06 18,700 EKW08 24,490 25,000...
-
Page 24: Capacity Data
EKW INSTALLATION MANUAL Capacity Data heating Capacity Data EKW06 Load Flow Source Flow - .19 L/s Source Flow - .38 L/s Source Flow - .57 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 8.27 22.4 4.29 -6.5 8.96... - Page 25 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data continued... EKW06 Load Flow Source Flow - .19 L/s Source Flow - .38 L/s Source Flow - .57 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 6.89 44.1 3.29 -5.3...
- Page 26 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data EKW06 Load Flow Source Flow - .19 L/s Source Flow - .38 L/s Source Flow - .57 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.19 10.34 10.0 0.38 33.78...
- Page 27 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data continued... EKW06 Load Flow Source Flow - .19 L/s Source Flow - .38 L/s Source Flow - .57 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.19 7.58 21.1 22.5...
- Page 28 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data EKW08 Load Flow Source Flow - .25 L/s Source Flow - .50 L/s Source Flow - .76 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.25 4.82 22.3 7.14 1.40...
- Page 29 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data continued... EKW08 Load Flow Source Flow - .25 L/s Source Flow - .50 L/s Source Flow - .76 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.25 4.14 44.1 6.72...
- Page 30 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data EKW08 Load Flow Source Flow - .25 L/s Source Flow - .50 L/s Source Flow - .76 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 10.0 0.50 19.30 -4.0 6.07...
- Page 31 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data continued... EKW08 Load Flow Source Flow - .25 L/s Source Flow - .50 L/s Source Flow - .76 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.25 4.83 22.1 10.73...
- Page 32 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data EKW12 Load Flow Source Flow - .35 L/s Source Flow - .69 L/s Source Flow - 1.04 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.35 4.83 23.3 11.16 2.14...
- Page 33 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data continued..EKW12 Load Flow Source Flow - .35 L/s Source Flow - .69 L/s Source Flow - 1.04 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.35 4.83 45.1 10.56...
- Page 34 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data EKW12 Load Source Flow - .35 L/s Source Flow - .69 L/s Source Flow - 1.04 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 10.0 0.69 20.70 -4.4 9.40 1.83...
- Page 35 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data continued... EKW12 Load Source Flow - .35 L/s Source Flow - .69 L/s Source Flow - 1.04 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.25 5.52 16.6 16.49 2.04...
- Page 36 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data EKW17 Load Flow Source Flow - .4 L/s Source Flow - .9 L/s Source Flow - 1.3 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 10.0 0.88 19.30 21.1 20.64...
- Page 37 EKW INSTALLATION MANUAL Capacity Data heating Capacity Data continued... EKW17 Load Flow Source Flow - .4 L/s Source Flow - .9 L/s Source Flow - 1.3 L/s Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.44 6.20 45.3 13.90...
- Page 38 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data EKW17 Load Source Flow - .4 L/s Source Flow - .9 L/s Source Flow - 1.3 L/s Source Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 10.0 0.88 21.40 -4.6 12.79...
- Page 39 EKW INSTALLATION MANUAL Capacity Data Cooling Capacity Data continued... EKW17 Load Source Flow - .4 L/s Source Flow - .9 L/s Source Flow - 1.3 L/s Source Flow Power Power Power ºC ºC ºC ºC ºC ºC ºC ºC 0.44 8.27 19.7 23.08...
-
Page 40: Flow Rates & Pressure Drop
EKW INSTALLATION MANUAL Source Flow Rates (L/s) Minimum Minimum Maximum Model Open Loop flow Rate Closed Loop flow Rate flow 0.188 0.377 0.754 ekW06 0.251 0.503 1.006 ekW08 0.346 0.691 1.382 ekW12 0.440 0.880 1.760 ekW17 Pressure Drop (kPa) Pressure Drop EKW17 EKW12 EKW08 EKW06 Pressure Drop (kPa) -
Page 41: Troubleshooting
EKW INSTALLATION MANUAL Troubleshooting Should a major problem develop, refer to the following information for possible causes and corrective steps: Compressor Won’t Run: The fuse may be blown or the circuit breaker is open. Check electrical circuits and motor windings for shorts or grounds. - Page 42 EKW INSTALLATION MANUAL Troubleshooting Controls Check the unit. If a lockout mode is displayed, refer to the table below to determine the meaning of the failure. Follow the procedure listed to correct the problem. Check the mode: If the unit is running on the internal aquastat, verify the unit is in “Primary” mode. The SL should be set to 0 in the setup menu.
-
Page 43: Preventive Maintenance
EKW INSTALLATION MANUAL Preventive Maintenance 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. Keep the system under pressure at all times. -
Page 44: Disposal/Recycling Section
Recycling: WaterFurnace units are made with valuable recyclable materials. There are several items in the unit that can be separated and sold as recycled material. In most cases, all refrigerant and oil must be drained; however, some recycle companies will remove the fluids for a fee. - Page 45 Manufactured by WFI 9000 Conservation Way Fort Wayne, IN 46809 USA Product: EKW Series Type: Hydronic Heat Pumps Size: 6 thru 17 kW WFI has a policy of continuous product research and development and reserves the right to change design Document Type: Installation Manual and specifications without notice.