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  5. Installation, operation and maintenance manual

EMI CAHV09 Installation, operation and maintenance manual

Manual is about: Variable Speed Cassette Ductless Split System

Summary of CAHV09

  • Page 1

    Cahv variable speed cassette ductless split system air handlers straight cool / heat pump nominal capacities cahv09 cahv12 cahv18 cahv24 units 9,000 12,000 18,000 24,000 btuh cool 2.6 3.5 5.3 7.0 kw 8400 8800 17000 19000 btuh heat 2.5 2.6 5.0 5.6 kw installation, operation and maintenance manual var...

  • Page 2

    Table of contents check our website frequently for updates: www.Enviromaster.Com information and specifi cations outlined in this manual in effect at the time of printing of this manual. Manufacturer reserves the right to discontinue, change specifi cations or system design at any time without notic...

  • Page 3

    Receiving information general information installation shall be completed by qualifi ed agency. Retain this manual and warranty for future reference. Installer review this manual to verify unit has been installed correctly. Run unit for one complete cycle to verify proper function. To obtain technic...

  • Page 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 electri...

  • Page 5

    General product information standard features cahv units • remote or optional wired wall control is required to adjust settings and confi gure controller. • when operated by optional wired wall control, controller offers most functions. Hand held controller is required for “test” mode. Materials of ...

  • Page 6

    Dimensional/physical data figure 1 - dimensions: models 9, 12, 18, & 24 (see table 1, page 7 ) model 9-12 model 18-24 features 1 optional discharge knockouts 5¼-inch diameter (3) available 2 fresh air inlet knockouts 1¼ x 2½ inches - 9/12 (2) available 3x3 18/24 3 condensate discharge ½-inch diamete...

  • Page 7

    Table 1 dimensions — models 9, 12, & 24 (see figure 1, page 6 ) dimension models 9 & 12 model 18 & 24 model 42 inches mm inches mm inches mm a 25.00 635 37.00 940 37.00 940 b 25.00 635 37.00 940 49.26 1251 c 22.50 572 32.44 824 32.44 824 d 2.04 52 2.00 51 2.04 52 e 22.57 573 30.40 772 44.68 1135 f 1...

  • Page 8

    Installation considerations before installing • determine best location for mounting unit for room air circulation. • locate outdoor and indoor units as close together as possible. • determine how power wires high and low-voltage, condensate drainage, and refrigerant piping may be run to and from un...

  • Page 9

    Blanking off fascia discharge slot(s) need blanking off when ducts are used to channel conditioned air to other areas. • position two polystyrene blanking off strips (provided) in fascia discharge slots to direct air to ducts. • up to two non-adjacent sides may be blanked off. If fascia discharge sl...

  • Page 10

    Positioning select cassette installation position. 1. Pipe work, electrical connections, control box and condensate pump access panels should be readily accessible. Refer to cassette dimensions. See figure 1, page 6 and table 1, page 7 . 2. Position unit at least 5 ft. (1.5m) from wall or similar ob...

  • Page 11

    Figure 7 - mounting brackets fold bracket along perforations mounting method • in existing construction, remove enough ceiling panels to provide clearance space for mounting unit to ceiling joists. • before beginning installation, inspect unit location, test strength of ceiling joists to insure they...

  • Page 12

    Cassette is supplied with 1/2” i.D. Fl exible pvc hose for connection to copper or plastic drain piping. Cassette installation considerations 1. Maximum pump lift is 36” (0.9m) from base or bottom of unit. 2. Highest point in condensate piping should be as close to unit as possible. Prevents large v...

  • Page 13

    Attach branch duct and fresh air duct collars to cassette chassis using following steps. Recommend install no more than 10 feet (3m) of branch duct or fresh air duct. 1. Locate knock-out holes. See figure 12 . Number of knockouts vary with unit size. • branch duct knock-outs are 5¼” (133mm) round. •...

  • Page 14

    Figure 14 - piping connections at unit suction line liquid line suction lin ne liquid li ne liq (when a reducing bushing is required, install only at the indoor suction-line connection.) refrigerant piping piping preparation • avoid piping on wet and rainy days. • use only clean, refrigeration-grade...

  • Page 15

    Common suction port high pressure switch common discharge refrigerant processing charging unit 1. Attach manifold set, vacuum pump, & micron gauge. See figure 18 . 2. Evacuate line to 500 microns or less to insure all moisture has been removed and there are no leaks. See figure 19 . • evacuate • pre...

  • Page 16

    Condenser cassette pairing line charge per foot factory charge s1cv9000 cahv09 .25 oz./ft (23 g/m) 39.5oz (1120g) s1cv2000 cahv12 .25 oz./ft (23 g/m) 39.5oz (1120g) s1cv8000 cahv18 .64 oz./ft 59 g/m) 54.0oz (1531g) s1cv4000 cahv24 .64 oz./ft (59 g/m) 54.0oz (1531g) s1hv9000 cahv09 .25 oz./ft (23 g/m...

  • Page 17

    Assembly instructions 1. To install the four fascia mounting bolts: a. Locate supplied bolts and washers from kit bag. B. Place washers on bolts. C. Screw mounting bolt with washer into chassis leaving approximately 1” (25mm) to hang fascia. 2. Insure white panel fasteners holding fascia polystyrene...

  • Page 18

    Figure 25 - connect vane motor plug into socket on chassis female vane motor plug on chassis male vane motor plug on fascia scia figure 26 - connect infrared unit cable figure 27 - secure fascia to chassis figure 28 - adjust louver position 30° from plumb final assembly do not over-tighten bolts cou...

  • Page 19

    Figure 29 - remove control box cover rating plate figure 30 - electrical connections l2 l2 high-voltage cable l1 l1 ground lug ground wire g g g g g g g g g g g g g g g g g low-voltage low-voltage connections connections general electrical requirements electrical wiring must be in accordance with al...

  • Page 20

    Low-voltage electrical wiring low-voltage interconnect wiring must be 18 awg. 1. Locate 24v control transformer in air handler. Provides low-voltage control power to both air handler and condenser. Low-voltage interconnect control wiring may vary depending on model selected. 2. Refer to wiring diagr...

  • Page 21

    Optional controller emi wired control emi offers wired wall control compatible with emi split sys- tem air handlers for variable speed condensers. Fan operation controls call for fan operation (on or off). After controller has been satisfi ed and call for heating or cooling has been removed, indoor ...

  • Page 22

    Figure 34 - wall-mounted control confi guration — cooling only figure 35 - wall-mounted control confi guration — heat pump wall mounted control confi guration wall mounted control layout, see figure 34 and figure 35 . Low voltage interconnect wiring must be at least 18 awg. 24v control transformer i...

  • Page 23

    A/c condenser with electric heat operation confi gure wired wall controller operation with optional elec- tric heat control - heat source on. Wired wall controller’s call for electric heat operation - (on or off). Place system switch in heat mode after connecting thermostat to unit. • adjust set-poi...

  • Page 24

    Cahv units • set controller functions before proceeding with start-up. • follow instructions beginning on page 26 . Test cooling operation operation of the unit depends on the room temperature. It may be necessary to warm the room before testing the unit’s cooling abilities. When power is fi rst app...

  • Page 25

    1. Remove adjacent ceiling tile to access condensate pump cover panel. 2. Insert squeeze water bottle nozzle through opening in condensate pump access panel and fi ll drain pan. See figure 36 . 3. Adding water activates fl oat switch and pump. Water must fl ow regularly when condensate pump is energ...

  • Page 26

    Verify compressor operation — all systems 1. Place system controls into cooling mode, with setpoint below room temperature. 2. Verify compressor start up, noise, vibration, and overall system operation. 3. Place control setpoint above room temperature. 4. Verify compressor shuts down. 5. After blowe...

  • Page 27

    Verify heat pump operation - no electric heat 1. This is heat pump outdoor unit with no heat source in cassette (indoor) unit. 2. Set confi guration for heat source off, heat pump on. See figure 42, page 32. 3. Use remote to set mode to cool. See figure 39, page 30 . 4. Use remote to adjust setpoint...

  • Page 28

    Figure 37 - emi unit mounted controller control panel cahv controller overview warning electrical shock hazard. Verify all power is off from both indoor cassette unit and outdoor condenser unit before removing control box cover. Failure to follow these instructions could result in death or serious i...

  • Page 29

    1 5 4 3 2 6 1 infrared receiver window 2 power led wired wall controller mode — on when power is applied to unit. Infrared controller mode — on while cassette unit is in on mode; off while unit is in off mode. Cooling led on when unit is in cooling operation. Heating led on during calls for heat. 5 ...

  • Page 30

    Figure 39 - cahv microprocessor controller — infrared remote control power press to turn unit on or off. Press and hold 2 seconds to transmit all settings to unit-mounted controller. Mode press to toggle through operating modes — heat, cool, auto changeover, dry or fan. Clock normal operation — hold...

  • Page 31

    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 3 seconds to enter set time mode; hold again 3 seconds to exit. In programming mode — press to enter previous se...

  • Page 32

    Figure 41 - 7-day programming options for cahv item setting values overview to access: press and hold program and clock buttons simultaneously 3 seconds; use arrow keys to select position; save selection and exit by repeating button press. Quick copy — hold fan and program buttons 3 seconds to copy ...

  • Page 33

    Figure 42 - confi guration mode for cahv air handlers item display possible value (fl ashing) overview factory settings to access: press mode and prog together 5 seconds, repeat to exit; automatically exits after 20 seconds idle temperature setting scale 01 f-c f c fahrenheit celsius f select temper...

  • Page 34

    Table 7 programming schedule (when using 7-day programming) night cool heat : : : : : : : auto ev ening cool heat : : : : : : : auto da y cool heat : : : : : : : auto morning cool heat : : : : : : : auto time temp time temp time temp time temp time temp time temp time temp monda y tuesda y w ednes- ...

  • Page 35

    When power is fi rst applied to control or after power outage there is three (3) minute delay before compressor or electric heat will energize. Protects unit from short cycling due to loss of power. Pointing the remote point remote toward cassette’s infrared receiver window when entering commands. C...

  • Page 36

    Cooling mode for cooling operation, turn unit on via power button. 1. Select cooling mode via mode button. 2. Room temperature and set point temperature are displayed. 3. Setpoint temperature changes by one degree with each successive press of up or down arrow buttons. Holding button in changes temp...

  • Page 37

    6. When room temperature has been satisfi ed for at least sixty (60) seconds and two (2) minute minimum on- time has elapsed, compressor switches off. 7. See fan operation see pg. 39. 8. Place setpoint temperature above room temperature by at least two (2) degrees. 9. Compressor starts and, electric...

  • Page 38

    7-day programming mode 7-day programming mode is used to store settings for pre- programmed run mode. 1. When unit is in either off or on mode, 7-day programming mode can be entered by pressing program + clock buttons simultaneously for three (3) seconds. 2. When program + clock buttons are pressed ...

  • Page 39

    Wired wall controller operation optional heat pump with electric heat (two-stage heating) optional wired wall control controls call for electric heat operation (on or off). 1. After connecting optional wired wall control to unit, place system in heating mode. 2. Adjust setpoint temperature above roo...

  • Page 40

    Short cycle protection (asct) • anti-short-cycle timer (asct) is 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 does not allow outdoor unit to restart unit...

  • Page 41

    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 fail...

  • Page 42

    Figure 43 remove grille model 12 model 12 shown shown figure 44 remove filter figure 45 clean with vacuum model 12 model 12 shown shown figure 46 clean with damp cloth clean filter 1. Clean air fi lter monthly. A. Access fi lters by removing air intake access grilles. See figure 43 . B. Remove fi lt...

  • Page 43

    Wiring diagram troubleshooting indoor unit, see wiring diagram(s) supplied with equipment. • wiring diagram located on inside surface of control panel cover. See figure 29, page 19 . • contact technical service (800) 228-9364 if unable to locate wiring diagram. Have full model and serial number avai...

  • Page 44

    Low voltage controls optional heat pump with electric heat applications heat pump systems utilize 6 low volt interconnecting wires between indoor, and outdoor. 24v transformer located in indoor air handler provides low volt control power to both air handler and condenser. • air handlers require cont...

  • Page 45

    Heating two stage heating heat pump units accommodate two-stage heating when optional electric heater is present in combination with heat pump condenser. First stage consists of heat pump alone and second stage consists of heat pump and electric heat both operating simultaneously. To verify heating ...

  • Page 46

    1. Adjust setpoint temperature above room temperature so fi rst stage heating is activated, 1°f difference. 2. Compressor and fan motors start and heating begins. 3. Heating continues as long as setpoint temperature remains above room temperature. Place setpoint further above room temperature to act...

  • Page 47

    • does system have proper refrigerant charge? System low on refrigerant can cause air handlers freeze-up. To check system charge you need to contact a qualifi ed refrigeration service technician. Refrigerant charge information can be found in the installation, operation and maintenance manual for ou...

  • Page 48

    Table 9 electrical specifi cations cahv model fan motor elect heat total amps min volt m.C.A. Hacr brkr volts/hz/ph rla h.P. Kw amps cahv09 / cahv12 208/230/60/1 0.35 1/10 – – 0.4 197 0.5 15 208/230/60/1 0.35 1/10 1.5 6.52 6.9 197 8.6 15 208/230/60/1 0.35 1/10 3.0 13.04 13.4 197 16.8 20 cahv18 / cah...

  • Page 49

    S1cv/s1hv side discharge cahv cassette(s) table 12 cooling systems cahv condenser cassette btuh seer shr eer ref. S1cv9000 cahv09 9,000 15.0 .079 13.0 r410a s1cv2000 cahv12 12,000 15.8 0.69 12.0 r410a s1cv8000 cahv18 18,000 17.0 0.74 13.0 r410a s1cv4000 cahv24 24,000 17.0 0.66 11.0 r410a table 13 he...

  • Page 50

    Test unit performance data sheet notice performance data sheet provided for use by qualifi ed service professional in event there is concern with unit. Have information ready when calling. Include model number, serial number, and date of installation. Technical support department @ 1-800-228-9364. M...

  • Page 51

    Notes 51.

  • Page 52

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