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  5. Installation and service manual

Modine Manufacturing 120 Installation and service manual

Manual is about: hydronic ground source heat pumps GH series and EH series

Summary of 120

  • 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 qualifi ed in r-410a refrigerant and using proper tools and equipment. Due to much higher pres...

  • Page 2: Caution

    2 geo16-504.2 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 geo16-504.2 model nomenclature figure 3.1 - model number designations 1,2 3 4,5,6 7 8 9,10 11 12 13 14 15 16 17 18 mt uc mbh ds cc sv ct ac gm hm hwg mt sa ra 1,2 - model type (mt) gh - residential hydronic (water to water) eh - commercial hydronic (water to water) 3 - unit configuration (uc) r - ...

  • Page 4

    4 geo16-504.2 figure 4.1 - dimensional drawings - models 036-066 unit dimensions table 4.1 - dimensions (inches) - models 036-066 models 036 048 060 066 overall cabinet a 23.13 23.13 23.13 23.13 b 25.65 25.65 25.65 25.65 c 32.63 32.63 32.63 32.63 electrical e 15.44 17.07 15.44 15.44 f 12.82 14.26 12...

  • Page 5

    5 geo16-504.2 figure 5.1 - dimensional drawings - models 096-132 unit dimensions table 5.1 - dimensions (inches) - models 096-132 models 096 120 132 overall cabinet a 46.26 46.26 46.26 b 25.65 25.65 25.65 c 32.63 32.63 32.63 bottom unit electrical e 17.07 15.44 15.44 f 14.26 12.82 12.82 g 11.76 10.3...

  • Page 6: Danger

    6 geo16-504.2 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 7

    7 geo16-504.2 water connections 1. All units utilize swivel pipe fittings for water connections that are rated for 150 psi. 2. The connections have a rubber gasket seal similar to a garden hose gasket, which, when mated to the flush end of most 1" threaded male pipe fittings (mpt), provides a leak-f...

  • Page 8: Danger

    8 geo16-504.2 installation table 8.1 - dhw pipe sizes ➀ maximum pipe length (one way) to achieve optimum flow models dhw flow (gpm) 1/2" copper 3/4" copper 036 1.2 50 - 048 & 096 1.6 45 50 060 & 120 2.0 25 50 066 & 132 2.4 10 50 figure 8.1 - typical dhw piping diagram figure 8.2 - typical dhw piping...

  • Page 9: Caution

    9 geo16-504.2 installation figure 9.1 - terminal strip 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 equipmen...

  • Page 10

    10 geo16-504.2 hydronic pump wiring the hydronic pump 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 pump prior to turning the system on. Aquastat wiring the aquastat wires are connected directly to ...

  • Page 11

    11 geo16-504.2 electrical specifications table 11.1 - electrical ratings models digits 9 & 10 power code rated voltage voltage (min/max) compressor pumps control total unit fla mca max fuse rla lra load flc dhw 036 02,03 208-230/1/60 197 / 253 20.0 112.0 1.8 1.8 0.4 0.5 24.5 29.5 30.0 04,05 208-230/...

  • Page 12: Important

    12 geo16-504.2 start-up procedure important important start-up and adjustment procedures must be performed by a qualified service agency. Ensure that the freeze protection setpoint is properly set (approximately 10°f above the fluid freeze point) for the type and percentage of fluid used in the grou...

  • Page 13: Wpd

    13 geo16-504.2 start-up procedure unit startup procedure the startup / troubleshooting form found on page 23 of this manual may be used to assist during unit startup. 1. Put aquastat in standby or off mode. 2. Turn on line power to heat pump. 3. Slowly raise the aquastat set-point until a heating ca...

  • Page 14

    14 geo16-504.2 start-up procedure table 14.1 - typical operating conditions table 14.2 - operating limits note: limits are acceptable for start-up conditions only. Min / max limits are intended for bringing the space up / down to normal temperatures. Units are not designed to operate at the min / ma...

  • Page 15

    15 geo16-504.2 start-up procedure / physical data table 15.1 - 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 measurements relative to typical operat...

  • Page 16: Caution

    16 geo16-504.2 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 20.1-22.1, refer to the applicable sections of the man...

  • Page 17

    17 geo16-504.2 maintenance 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 entering the cabinet. ...

  • Page 18

    18 geo16-504.2 replacement parts table 18.1 - common replacement parts part description 036 048 060 066 098 120 132 power code 02,03 compressor code 01,03 compressor 5h1028043611 5h1028045111 5h1028045711 5h1028047211 5h1028045111 5h1028045711 5h1028047211 compressor run capacitor 5h1036890003 5h103...

  • Page 19

    19 geo16-504.2 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 20

    20 geo16-504.2 troubleshooting table 20.1 - 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 21

    21 geo16-504.2 table 21.1 - troubleshooting troubleshooting fault mode possible cause verify action htg clg low pressure cutout x reduced water flow check flow center operation. Troubleshoot flow center. Manually open water valve and measure water flow. Adjust to proper flow rate. Plugged water stra...

  • Page 22

    22 geo16-504.2 table 22.1 - troubleshooting fault mode possible cause verify action htg clg unit will not operate in cooling mode x loss of control signal in cooling mode, verify 24vac at rv coil and at rev terminals. If 24vac exists, troubleshoot rv and coil. If no control signal, troubleshoot aqua...

  • Page 23

    23 geo16-504.2 start up / troubleshooting form customer name ______________________________________ date ________________ address ______________________________________________________________ loop type _________________ model # ____________________________ serial # ______________________________ an...

  • Page 24

    Modine manufacturing company 1500 dekoven avenue racine, wi 53403 phone: 1.877.679.4436 (4geo) www.Modinehvac.Com © modine manufacturing company 2015 as modine manufacturing company has a continuous product improvement program, it reserves the right to change design and specifications without notice...