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  5. Installation, Operation And Maintenance Manual

EMI UNHV09 Installation, Operation And Maintenance Manual

Manual is about: Variable Speed Ductless Split System

Summary of UNHV09

  • Page 1

    P/n# 240009098, rev. C [08/08/2012] an iso 9001-2008 certifi ed company unhv variable speed ductless split system air handler straight cool / heat pump nominal capacities unhv09 unhv12 unhv18 unhv24 units 9,000 12,000 18,000 24,000 btuh cool 2.6 3.5 5.3 7.0 kw 8,800 10,000 18,000 21,000 btuh heat 2....

  • Page 2

    2 receiving information .................................................................................................................. 3 important safety information ........................................................................................................ 4 dimensional/physical da...

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    3 shipping damage must be reported to the carrier immediately. Examine exterior. Remove cover and examine compressor and piping for signs of damage. Receiving information general information installation shall be completed by qualifi ed agency. Retain this manual and warranty for future reference. I...

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    4 important safety information become familiar with symbols become familiar with symbols identifying potential hazards. Identifying potential hazards. All fi eld wiring shall conform to requirements of authority having jurisdiction or in absence of such requirements: • united states - national elect...

  • Page 5

    5 dimensions — inches (mm) model a b c d e f g h j unhv09/12 26” (660) 11” (279) 41 ½” (1054) 5 ½” (140) 35” (887) 19 3 / 16 ” (487) 2 ½” (64) 10 7 / 16 ” (265) 40 ½” (1029) unhv18/24 26” (660) 11” (279) 51 ½” (1308) 5 ½” (140) 45” (1141) 19 3 / 16 ” (487) 2 ½” (64) 10 7 / 16 ” (265) 50 ½” (1283) di...

  • Page 6

    6 general product information product description • unhv is available as (dx) direct expansion straight cool or heat pump. • unit is equipped with unit mounted infrared compatible controls which support 24v wired wall controller operation. Optional handheld remote is available. • heat pump models pr...

  • Page 7

    7 general product information notice if excessive noise or vibration from unit mounted to masonry block wall, verify unit is plumb and level. If noise or vibration persists, contact distributor. S1cv/ s1hv or model max. Length equivalent feet max. Lift max. Trap height liquid line suction line “h” “...

  • Page 8

    8 unit mounting notice do not install unit in location where curtains or drapes obstruct supply air grille. This may cause air to recirculate without cooling the room, and may result in premature system failure. Unit mounting instructions 1. Optimal unit location: • locate unit in area with unrestri...

  • Page 9

    9 unit mounting unit mounting instructions warning electrical shock hazard. Replace all panels after installation or servicing. Panels must remain on unit at all time while powered and in operation. Failure to do so could result in death or serious injury. ! Ceiling mounting threaded rods may be ins...

  • Page 10

    10 condensate piping unhv is supplied with two ½" i.D. Fl exible pvc hoses for connection to copper or plastic condensate drain pipe work. • each drain line is labeled and plugged at the factory. • unplug appropriate line and connect to condensate drain. • consider following information when install...

  • Page 11

    11 refrigerant piping figure 7 refrigerant connections suction line liquid line knockout for piping removed liquid line e piping preparation • avoid piping on wet and rainy days. • use only clean, refrigeration-grade copper tubing. • use tubing benders to guard against kinking. • verify no burrs rem...

  • Page 12

    12 refrigerant piping line sizing 1. Size lines per table 12, page 39 . 2. Match suction line size with condenser service valve connection. • when matching unhv18 or 24 with 18,000 or 24,000-btuh condenser, use 5/8" suction line, with reducer installed at indoor connection. 3. Changes in diameter of...

  • Page 13

    13 refrigerant processing refrigerant processing 1. Attach manifold set, vacuum pump, & micron gauge. See figure 10. 2. Evacuate line to 500 microns or less to insure all moisture has been removed and there are no leaks. See figure 11. A. Evacuate b. Pressurize with 100psi n2 or nitrogen c. Evacuate...

  • Page 14

    14 refrigerant processing condenser wall unit pairing line charge per foot factory charge s1cv9000 unhv09 .25 oz./ft 23 g/m) 39.5oz (1120g) s1cv2000 unhv12 .25 oz./ft 23 g/m) 39.5oz (1120g) s1cv8000 unhv18 .64 oz./ft 59 g/m) 54.0oz (1531g) s1cv4000 unhv24 .64 oz./ft (59 g/m) 54.0oz (1531g) s1hv9000 ...

  • Page 15

    15 electrical wiring figure 14 electrical connections wall wall mounted mounted electrical connections ctrical c c on on nn o o n ection ctrical c c c c c on on on nn on o o o ectio mounted electrical connections electrical connections m m m m m m m m m m m m m m m m m m m m m m m m m m m site prepa...

  • Page 16

    16 electrical wiring high voltage electrical wiring 1. Remove control box cover screws to access high voltage wiring compartment. See figure 15 and figure 16 2. Refer to wiring diagram to connect power wire to black l1 and red l2 at power connector location. 3. Connect ground wire to ground lug or l...

  • Page 17

    17 electrical wiring cooling only connection • cooling only units utilize four (4) low voltage interconnecting wires between the indoor and outdoor units. • connect each wire [com1, com2, sc, and 24 vdc (-)] to same named terminal indoor and outdoor. See figure 18 . • protect other unused wires or t...

  • Page 18

    18 electrical wiring wired wall controller • low voltage interconnect wiring must be at least 18 awg. • unit mount control — if control confi gured for unit mount do not connect wired wall controller to unit. • 24v control transformer is located in air handler unit. Provides low volt control power t...

  • Page 19

    19 electrical wiring figure 21 wired wall controller confi guration — cooling only figure 22 wired wall controller confi guration — heat pump.

  • Page 20

    20 cabinet re-assembly re-assemble cabinet verify system is leak-free and all piping has been properly installed before reassembling cabinet. See figure 23 . 1. Slide cabinet slotted holes over upper and lower cabinet screws. (if cabinet is recessed into wall or ceiling, cabinet cannot slide, replac...

  • Page 21

    21 s1cv / s1hv condenser operation • when indoor control is placed in cooling mode, with set point temperature below room temperature, compressor, outdoor fan, and indoor blower energize. • anti-short cycle timer (asct) prevents compressor from re-starting for three minutes. • when indoor control is...

  • Page 22

    22 • as temperature of indoor space moves closer to set point compressor, indoor, and outdoor motors adjust speeds to reduce rate of indoor temperature change and avoid passing set point. As temperature of indoor space moves farther from set point compressor, indoor, and outdoor motors adjust to inc...

  • Page 23

    23 controller operation • controller operates unit in cooling, heating (when equipped) dry or auto changeover mode. • setpoint temperature is either manually set or allowed to follow pre-programmed (7-day) settings. See table 6, page 26 . • controller provides diagnostics with annunciation and inclu...

  • Page 24

    24 power press to turn unit on or off. Press and hold for 2 seconds to transmit all settings to unit-mounted controller mode press to toggle through operating modes — cool, heat, auto changeover, dry or fan modes. Normal operation — hold for 3 seconds to enter set time mode; press again to fi nish a...

  • Page 25

    25 wired wired wall controller wired wall control operation wired controller button selections power press to turn unit on or off. Mode press to toggle through operating modes — cool, dry, fan, heat or auto changeover clock normal operation — hold for 3 seconds to enter set time mode; hold again for...

  • Page 26

    26 wired wired wall controller table 6 7-day programming options for cahv item setting values overview to access: press and hold program and clock buttons simultaneously for 3 seconds; use arrow keys to select position; save selection and exit by repeating the button press. Quick copy — hold fan and...

  • Page 27

    27 item dis- play possible value (fl ashing) overview factory settings to access: press mode and prog together for 5 seconds, repeat to exit; automatically exits after 20 seconds idle temperature setting scale 01 f-c f c fahrenheit celsius f select temperature scale for display and operating setting...

  • Page 28

    28 night cool heat : : : : : : : auto evening cool heat : : : : : : : auto day cool heat : : : : : : : auto morning cool heat : : : : : : : auto time temp time temp time temp time temp time temp time temp time temp monday tuesday wednes- day thursday friday saturday sunday to copy the settings from ...

  • Page 29

    29 room air sampling if room air sampling feature has been enabled in confi gu- ration, after the fan has been off for selected time, it will cycle on for 60 second sample. See table 7, page 27 . • unit circulates room air to remove any temperature stratifi cation so microprocessor can determine acc...

  • Page 30

    30 optional electric heat operation (non heat pump condenser units only and unhv) for operation with electric heat only, control must fi rst be confi gured properly — heat source on, heat pump off). See table 7, page 27 . For electric heat operation, fi rst turn unit on via on/off button. • select h...

  • Page 31

    31 pre-programmed run mode feature allows setpoint temperature to be changed accord- ing to pre-programmed set point and time of day settings. • setpoint and time settings are programmed into control through 7-day programming setup. See table 6, page 26 . • pre-programmed run mode can be entered fro...

  • Page 32

    32 cooling operation optional wired wall controller controls call for cooling operation (on or off). After connecting thermostat to unit, place system switch in cool mode. • adjust set-point temperature below room temperature. • compressor and fan motors start and cooling begins. Place set-point tem...

  • Page 33

    33 short cycle protection (asct) electronic control incorporates anti-short-cycle timer (asct) feature designed to protect compressor from short cycling. Asct is activated immediately following off cycle of outdoor unit. Once room temperature is satisfi ed and outdoor unit switches off, asct will no...

  • Page 34

    34 failure type/ location run led alarm led- number of flashes fault condition description indoors off 1 dirty fi lter clean fi lter,press warning/clear fi lter button off 2 drain pan condensate fault condensate, check for drain blockage or pump failure off 3 eprom failure check indoor eprom off 4 f...

  • Page 35

    35 grille screws clean the filter clean fi lter as needed to insure operating effi ciency. Follow procedure listed below. Filter must be cleaned regularly — allowing dust to collect on the fi lter results in reduction of air fl ow, causes unit to lose effi ciency, condition will cause unit to malfun...

  • Page 36

    36 troubleshooting wiring - refer to wiring diagram supplied equipment. See see “electrical wiring” on page 15. • wiring diagram is located on inside surface of left end cap. • if you are unable to locate the wiring diagram, please call technical service at (800) 228-9364. Have full model and serial...

  • Page 37

    37 electric heat applications units with electric heat utilize control relay located on the air handlers control board in the control box. Auto-reset limit switch located on heater end plate or on heater assembly interrupts power to heater should over- heat condition occur. Each electric heat assemb...

  • Page 38

    38 q: the condenser will not start although indoor unit appears normal. What should i do? A: check breaker q: how long will the fan run? A: while the unit is in cooling or heating and auto fan mode is selected, fan speed is determined by microproces- sor, speed adjustment is made according to room a...

  • Page 39

    39 figure 32 d imensions and shipping weights — inches (mm) and pounds (kg) model a b c shipping weight height depth length pounds unhv09 unhv12 26 (660) 11 (279) 41½ (1054) 95 (43) unhv18 unhv24 26 (660) 11 (279) 51½ (1308) 116 (53) table 10 discharge air speed and flow @ 230 vac / sound values mod...

  • Page 40

    40 table 14 cooling system with universal units condenser wall units btuh seer shr eer ref. S1cv9000 unhv09 9,000 16.7 0.75 13.5 r410a s1cv2000 unhv12 12,000 17.0 0.66 12.0 r410a s1cv8000 unhv18 18,000 17.0 0.73 13.0 r410a s1cv4000 unhv24 24,000 17.0 0.67 11.0 r410a table 15 heat pump system with un...

  • Page 41

    41 notice test unit performance data sheet is provided for use by qualifi ed service professional in event there is concern with unit. For our technical service department to better serve you, please complete. Have this information ready when calling. It is important to include model number, serial ...

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    42 notes.

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    43 notes.

  • Page 44

    Phone: 1-800-228-9364 fax: 1-800-232-9364 2201 dwyer avenue, utica ny 13501.