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  4. GEO16-501.4
  5. Installation And Service Manual

Modine Manufacturing GEO16-501.4 Installation And Service Manual

Manual is about: ground source heat pump split unit model GS/ES

Summary of GEO16-501.4

  • Page 1

    Warning this unit contains r-410a high pressure refrigerant. Hazards exist that could result in personal injury or death. Installation, maintenance, and service must only be performed by an hvac technician qualified in r-410a refrigerant and using proper tools and equipment. Due to much higher press...

  • Page 2: Caution

    2 geo16-501.4 special precautions special precautions the installation and maintenance instructions in this manual must be followed to provide safe, efficient, and trouble-free operation. In addition, particular care must be exercised regarding the special precautions listed below. Failure to proper...

  • Page 3

    3 geo16-501.4 model nomenclature figure 3.2 - serial number designations s 0 40 20 1 2 11 14 1234 12345 serial number spo model stacked unit 0 - standard 1 - stacked motor supplier 40 - ao smith 51 - genteq 00 - none blower supplier 20 - morrison 00 - none compressor 1 - copeland warranty term 1 - 1...

  • Page 4

    4 geo16-501.4 figure 4.1 - unit dimensions unit dimensions table 4.1 - dimensions (inches) models 024 036 048 060 072 overall cabinet a 23.13 23.13 23.13 23.13 23.13 b 25.65 25.65 25.65 25.65 25.65 c 25.65 25.65 25.65 25.65 25.65 electrical d 17.07 15.44 17.31 17.07 17.07 e 14.26 12.82 14.68 14.26 1...

  • Page 5: Danger

    5 geo16-501.4 unit location / installation to convert multiply by to obtain "w.C. 0.24 kpa psig 6.893 kpa °f (°f-32) x 0.555 °c inches 25.4 mm feet 0.305 meters cfm 0.028 m 3 /min to convert multiply by to obtain cfh 1.699 m 3 /min btu/ft 3 0.0374 mj/m 3 pound 0.453 kg btu/hr 0.000293 kw/hr gallons ...

  • Page 6

    6 geo16-501.4 unit installation 1. Units should be mounted on a vibration-absorbing pad slightly larger than the base of the unit. See table 6.1 below for modine vibration pad part numbers. If the unit isn’t mounted on a vibration-absorbing pad, it must be raised off the floor to prevent damage due ...

  • Page 7: Warning

    7 geo16-501.4 installation warning r-22 retrofits it is highly recommended that a new line set be installed for any r-22 system retrofit. If it is impossible to replace the line set, the line set must be flushed prior to the installation of the r-410a split system. It is also critical that the insta...

  • Page 8: Important

    8 geo16-501.4 dhw in dhw out drain connection air vent drain valve cold water in hot water out cold water in hot water out tank 1 heating source disabled hot water generator (desuperheater) installation (if equipped) a minimum 50 gallon water heater is recommended with the desuperheater (dhw) option...

  • Page 9

    9 geo16-501.4 leak testing and evacuating the refrigeration system pressurize the line set and air coil with 150 psi dry nitrogen and thoroughly check for leaks. Once a leak free system is verified, purge the system and evacuate the line set and air coil to at least 500 microns. Use both service por...

  • Page 10: Caution

    10 geo16-501.4 installation wiring caution ensure that the supply voltage to the appliance, as indicated on the serial plate, is not 5% less than the rated voltage. Warning 1. Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage. 2. All appliances...

  • Page 11

    11 geo16-501.4 installation flow center wiring the flow center must be connected to the terminal blocks in the electrical box. The pumps will automatically be cycled as required by the unit. Be sure to wire the flow center prior to turning the system on. Thermostat wiring the thermostat wires are co...

  • Page 12

    12 geo16-501.4 installation figure 12.1 - field wiring to fossil fuel furnace figure 12.2 - condensate overflow switch wiring dual fuel setup / thermostat wiring when matched with an a-coil and a furnace for the air handler, a dual fuel thermostat is required to prevent furnace from engaging when he...

  • Page 13

    13 geo16-501.4 table 13.1 - electrical data electrical data electrical data models 024 036 048 060 072 supply voltage 208-230/60/1 min / max voltage 197 / 253 fla 15.7 19.7 28.1 34.7 37.6 mca 18.5 23.5 33.5 41.8 45.4 mop 30.0 40.0 50.0 70.0 70.0

  • Page 14: Important

    14 geo16-501.4 start-up procedure important start-up and adjustment procedures must be performed by a qualified service agency. Start-up procedure the unit has been factory tested and set for proper operation, but a full unit start-up is recommended. Note: if any abnormal operation occurs during the...

  • Page 15: Wpd

    15 geo16-501.4 start-up procedure 9. If temperature drop is outside of expected operating range, check refrigerant pressures and compare to those shown in table 16.1. 10. Check air temperature rise across the coil. Air temperature rise should be between 20°f and 30°f. 11. Check for vibration, noise ...

  • Page 16

    16 geo16-501.4 start-up procedure table 16.1 - typical operating conditions heating - no desuperheater entering water temperature (°f) water flow (gpm/ton) suction pressure (psig) discharge pressure (psig) superheat (°f) subcool (°f) water temperature drop (°f) air temperature rise (°f) 30 1.5 68-76...

  • Page 17

    17 geo16-501.4 start-up procedure table 17.1 - compressor winding resistance (ohms) table 17.2 - refrigerant circuit malfunctions and probable causes ➀ the following chart will assist in troubleshooting and diagnosing causes of a problematic unit. The chart provides general guidance for system measu...

  • Page 18

    18 geo16-501.4 technical data table 18.1 - technical data ➀ cooling capacity based on 350 cfm , 75/63°f dry bulb/wet bulb return air model size 024 036 048 060 072 compressor two stage copeland ultratech coaxial coil internal water volume, gal. 1.1 1.8 2.1 2.5 2.5 nominal coaxial water flow rate, gp...

  • Page 19: Caution

    19 geo16-501.4 maintenance caution do not attempt to reuse any mechanical or electrical component which has been wet. Such component must be replaced. Important to check most of the possible remedies in the troubleshooting guide listed in tables 22.1 - 24.1, refer to the applicable sections of the m...

  • Page 20

    20 geo16-501.4 maintenance / replacement parts cabinet if a flood occurs, try to expel water as soon as possible. Water contact for any duration will cause corrosion on the cabinet finish. All units mounted on the ground should be installed on an absorption pad. This also helps prevent water from en...

  • Page 21

    21 geo16-501.4 troubleshooting general when encountering a unit with operational faults, complete these preliminary system checks before utilizing the troubleshooting charts. In order to maintain system integrity, performance and efficiency, do not install service gauges unless unit operation appear...

  • Page 22

    22 geo16-501.4 troubleshooting table 22.1 - troubleshooting fault mode possible cause verify action htg clg no power to unit x x power failure no voltage at line side of compressor contactor. Check disconnect switch and power distribution panel. X x open disconnect switch at heat pump disconnect, vo...

  • Page 23

    23 geo16-501.4 table 23.1 - troubleshooting troubleshooting fault mode possible cause verify action htg clg unit “short cycles” x x dirty air filter check air filter replace, if necessary. X x thermostat location check to see if thermostat is installed near a supply air grill. Relocate, if necessary...

  • Page 24

    24 geo16-501.4 troubleshooting fault mode possible cause verify action htg clg unit will not operate in cooling mode x defective reversing valve verify operation of reversing valve and solenoid coil. If defective, replace. When it is necessary to replace the reversing valve, wrap it with a wet cloth...

  • Page 25

    25 geo16-501.4 split unit start up / troubleshooting form customer name ___________________________________________________ date _________________________ address _______________________________________________________________ loop type _________________ model # ________________________________ seri...

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  • Page 28

    Modine manufacturing company 1500 dekoven avenue racine, wi 53403 phone: 1.877.679.4436 (4geo) www.Modinehvac.Com © modine manufacturing company 2016 as modine manufacturing company has a continuous product improvement program, it reserves the right to change design and specifications without notice...