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IBC HPX 3 Installation And Operating Manual Download Page 36

6.7.9 Multiple heat sources with buffer tank

Hydronic heat pump; system fluid circulates outdoors so typically requires glycol
treatment.

High Efficiency Hydronic Gas Boiler or Electric boiler staged (by IBC Sky 35
controller) to supplement heat pump below system balance point.

Check Valves

Closely-spaced tees: max. four pipe diameters apart, min. eight pipe diameters
straight piping upstream and four downstream

Buffer tank. Buffer tank needs vacuum breaker for cooling mode.

Supply to Heating System

Return from Heating System

Glycol fill tank

Figure 14

Hydronic heat pump and backup boiler piping concept with buffer tank

36

Section: Installation

Summary of Contents for HPX 3

Page 1: ...NG Risk of Electric shock If the information in this manual is not followed exactly a fire or electricution may result causing property damage personal injury or loss of life Do not store or use gasol...

Page 2: ...otal water volume in the system A high water volume system with a low hardness count may cause as much damage as a system with less volume and higher hardness so it is recommended to treat water so as...

Page 3: ...ances 22 6 3 Important Design Considerations 22 6 4 Water Piping 24 6 5 Hydronic heat pump circulator selection 25 6 6 Relief Valve 27 6 7 General piping best practices 27 6 7 1 System piping 27 6 7 2...

Page 4: ...ronic heat pump 47 Checklist for electrical conditions and water connections 47 9 0 Heat Pump Operation 49 9 1 Starting and Shutting Down the Heat Pump 49 10 0 Service and maintenance 51 10 1 Maintena...

Page 5: ...dous conditions that could result in property damage and injury to occupants and in extreme cases to death Keep instructions near the appliance for future reference Danger Do not store or use gasoline...

Page 6: ...could result in damage to appliance and or electric shock Caution The hydronic heat pump must be installed so that electrical components are not exposed to water during operation Known contaminants K...

Page 7: ...0 A Rated Water Flow 6 6 gpm 1 5 m3 h 7 5 gpm 1 7 m3 h Water Pressure Drop Head Loss 7 feet 2 1 m 9 feet 2 7 m Maximum Outlet Water Temp electronic hi limit 140 F 60 C Design Water Pressure 30 psig 20...

Page 8: ...3 1 Cabinet dimensions HPX Series dimensions Figure 1 Front view HPX 3 Figure 2 Side view HPX 3 Figure 3 Top view HPX 3 8 Section Specifications...

Page 9: ...Top view HPX 5 3 2 Connection specifications Description HPX 3 HPX 5 Return water inlet 1 NPT M 1 NPT M Supply water outlet 1 NPT M 1 NPT M Supply power knock out Dual 3 4 and 1 Control wiring knock...

Page 10: ...3 3 Capacities and COPs 10 Section Specifications...

Page 11: ...Table 2 HPX 3 Capacity and COP tables 11 3 3 Capacities and COPs...

Page 12: ...12 Section Specifications...

Page 13: ...Table 3 HPX 5 Capacity and COP tables 13 3 3 Capacities and COPs...

Page 14: ...Intentionally left empty...

Page 15: ...Introduction Wiring connection area Electrical connection rubber grommet 2 Supply water connection Heat Exchanger Fan Compressor Outdoor finned coil Return water connection Figure 7 Interior view of...

Page 16: ...ection area Outdoor finned coil Electrical connection rubber grommet 2 Return water connection Supply water connection Fan 1 of 2 Heat Exchanger Compressor Figure 8 Interior view of HPX 5 16 Section I...

Page 17: ...esign increases efficiency lowers ambient temperature operating range and increases maximum supply water temperature Renewable energy source Modulating Quiet operation Easy set up for Set Point or Out...

Page 18: ...ited warranty against defects in materials or workmanship For commercial applications IBC offers a 2 year parts and a 2 year compressor limited warranty against defects in materials or workmanship To...

Page 19: ...osure to salt air can reduce the life of a hydronic heat pump Ocean front installations are to be avoided Locate the hydronic heat pump s base at least 12 30 cm above the highest anticipated snow line...

Page 20: ...Intentionally left empty...

Page 21: ...A Conform to local codes or in the absence of these with the latest editions of UL STD 60335 1 and 60335 2 40 CSA STD C22 2 No 60335 1 and 60335 2 40 Table 4 Code requirements by country Warning This...

Page 22: ...om roof drip line this is particularly important in areas of high snow fall A canopy structure may be needed The location must be protected from strong winds If the site is subject to strong winds con...

Page 23: ...higher temperature consider these options Reduce the heat loss of the building Upgrading windows and attic insulation will reduce the required size and temperatures of the equipment Add to the existi...

Page 24: ...exchanger impairing heat transfer and resulting in overheating and premature failure The amount of solids that may form on the heat exchanger will depend on the degree of hardness and the total water...

Page 25: ...rculator that can overcome the head resistance shown in the appropriate table below Table 7 HPX 3 heat exchanger head loss requires correction if glycol is used Table 8 HPX 5 heat exchanger head loss...

Page 26: ...xchanger damage Installers must ensure that glycol solutions are formulated to inhibit corrosion in hydronic heating systems of mixed materials Improper mixtures and chemical additives may cause damag...

Page 27: ...Relief Valve Ensure that the pressure relief valve is installed indoors third parties sell combination relief valve vacuum breakers for easy mounting on top of a buffer tank Make sure the relief valve...

Page 28: ...You should carefully read and follow the installation instructions along with the application drawing that fits your system System piping is connected to the hydronic heat pump using 1 HPX 3 or 1 HPX...

Page 29: ...sure change there should be minimal pressure drop to circulator inlet Heat Pump i e primary circulator Dirt separator recommended Flexible hoses field supplied aid in aligning water connections to ind...

Page 30: ...day there are a number of feed and pressurization devices on the market that may be a better choice than a raw water fill from the mains When regular maintenance requires relief valve blow off the dis...

Page 31: ...e distribution fluid The heat exchanger must be sized generously so as to keep the distribution supply temperature within 5 F 3 C of the glycol supply Fill valve and expansion tank to maintain system...

Page 32: ...olation Note extra surface area of specialty heat pump indirect tank for efficient heat transfer domestic model of indirect tank would likely cause short cycling Buffer tank needs vacuum breaker for c...

Page 33: ...te heat exchanger or heat pump indirect tank can isolate glycol from distribution water see previous figures Buffer tank Buffer tank hydraulically separates HPX from load piping load pump s sized for...

Page 34: ...tput Btu h q lowest rate of heat extraction from tank may be zero Btu h T tank differential F IBC recommends 10 and advises this should not exceed 20 F Quick calculation for buffer tank sizing 6 7 7 Q...

Page 35: ...mended expansion tank connection point Glycol fill tank shown or fill station with isolation closed Supply piping to loads Returns from loads Figure 13 Multiple hydronic heat pumps piping concept with...

Page 36: ...er to supplement heat pump below system balance point Check Valves Closely spaced tees max four pipe diameters apart min eight pipe diameters straight piping upstream and four downstream Buffer tank B...

Page 37: ...s may be required in areas where power quality is suspect In temporary or manual operation for example in new construction heating use a construction thermostat or jumper with an in line switch to con...

Page 38: ...6 terminal switch for CIRC PUMP Outdoor wiring Indoor wiring 24V transformer HPX hydronic heat pump circulator field supplied 24V relay Figure 16 HPX Series circulator relay field wiring IBC recommend...

Page 39: ...end a 24V signal to HPX J4 terminals W for heating only thermostat Y for heat pump t stat Figure 17 HPX Series thermostat field wiring For a load with multiple zones e g thermostats controlling zone v...

Page 40: ...inals interlock O B terminal of heat pump thermostat set to B type reversing valve energized during heating mode J2 terminals receive 24V for heating mode operation Heat pump thermostat call for heati...

Page 41: ...On Off 6 8 7 Buffer tank sensor wiring IBC recommends the use of a buffer tank to separate the HPX Series operation cycles from the load operation cycles See separate manual IBC Sky 35 Controller for...

Page 42: ...ly recommends the use of a properly sized buffer tank with each system Where a buffer tank is not used IBC recommends the application of the either the IBC Sky 35 module for load control 42 Section In...

Page 43: ...separate document the IBC Sky 35 Controller Manual 7 2 Use in Stand alone mode The HPX can also be used in stand alone mode Typically this involves at least one household thermostat or a buffer tank...

Page 44: ...r Enter the code 22 The Factory menu with five tiles will appear select Parameters The Parameters table is five pages long For stand alone operation a value on the first page Parameter H07 Display Rem...

Page 45: ...etween Fahrenheit and Celcius go to the Parameters table by the path Settings Factory 22 Parameters described above Press the right arrow for the second Parameters page Parameter H21 Temperature Unit...

Page 46: ...r Cooling To activate cooling mode a value on the first page Parameter H05 Cooling Mode must be changed to Yes see illustration above Changes are saved by backing out from the Parameter menu 46 Sectio...

Page 47: ...ater connections Checking electrical conditions Check Check all line voltage electrical connections to ensure all connections are correct and tight Check thermostat connections Thermostat in a suitabl...

Page 48: ...Intentionally left empty...

Page 49: ...up Checklist Check With the hydronic heat pump power turned off check that all electrical connections are tight Check with a gauge that the system pressure is stable and appropriate for the applicatio...

Page 50: ...Intentionally left empty...

Page 51: ...p As needed Inspection of the unit is to be performed annually by a qualified service technician Annually Keep outdoor unit grill free of paper leaves grass trimmings etc As needed 10 2 Maintenance ch...

Page 52: ...leaks puddles As the refrigeration system is hermetically sealed the compressor oil is likely to be in good condition However in the event of a compressor motor winding short acidic oil is a possibili...

Page 53: ...es and Fixes a See sections covering diagnoses and fixes including i Cycling ii Temperature iii Miscellaneous 11 1 Electronic components This section details the method for troubleshooting the non sta...

Page 54: ...sensor fault Check high side pressure sensor for open line or short PP2 Suction pressure sensor fault Check low side pressure sensor for open line or short P001 Inlet EVI temperature sensor fault Che...

Page 55: ...erature is low E19 Primary outdoors freeze protection Ambient temperature is low E29 Secondary outdoors freeze protection Ambient temperature is low F031 DC fan motor 1 fault Check for poor wire conne...

Page 56: ...er Defective thermostat Refer to manufacturer s instructions Cycling on operating safety controls Check operation with ohmmeter voltmeter System radiation undersized Check manufacturer s rating tables...

Page 57: ...Check operation Refer to manufacturer s instructions Check setting with ammeter Air in system or marginal water flow Bleed purge system as required Confirm adequate pump size and temp rise in the heat...

Page 58: ...12 0 Exploded views of the HPX series Heat Pumps HPX 3 parts diagram 58 Section Exploded views of the HPX series Heat Pumps...

Page 59: ...30 Refrigerant filter P 1933 1 140 Inverter driver filter board P 1908 1 150 Power interface P 1901 1 160 Flow switch P 1942 1 170 Outlet connector pipe HPX 3 P 1936 1 180 Reversing valve HPX 3 P 1939...

Page 60: ...arts diagram 10 Front door HPX 5 P 1922 1 20 Axial fan grill cover HPX 5 P 1916 2 30 Axial fan blade HPX 5 P 1914 2 40 Axial fan DC motor HPX 5 P 1912 2 60 Section Exploded views of the HPX series Hea...

Page 61: ...P 1938 1 170 Refrigerant filter obscured behind outlet pipe P 1933 4 180 Tube in shell heat exchanger HPX 5 P 1928 1 190 Refrigerant check valve P 1940 1 200 Reversing valve HPX 5 P 1943 1 210 Electr...

Page 62: ...ent Outdoor Sensor P 9067 Air Vent Piping Kit P 195 External Tridicator P 9014 Pressure Relief Valve 30 psi P 9009 Pressure Relief Valve 45 psi P 9020 Pressure Relief Valve 50 psi P 9134 62 Section Ex...

Page 63: ...eaker ____ Labeled Power supply wire gauge _____ Leak testing completed System Cleaned and Flushed type of cleaner used ________________________________ System Filled type concentration of any glycol...

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Page 65: ...65 13 0 Appendices Wiring diagrams Figure 19 HPX 3 internal wiring diagram...

Page 66: ...Figure 20 HPX 5 internal wiring diagram 66 Section Appendices...

Page 67: ...same function THIS OVERRIDE MUST NOT BE USED UNLESS AT LEAST ONE OF THE FOLLOWING CONDITIONS IS TRUE An external energy management system is installed that reduces the supplied water temperature as th...

Page 68: ...77 0277 T 856 877 0544 F 604 877 0295 F 856 735 5584 Toll Free 1 844 HEAT IBC 1 844 432 8422 www ibcboiler com Information in this document is subject to change without notice IBC assumes no responsib...

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