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Summary of Contents for UNCG-30

Page 1: ...UNCG UNHG High Efficiency Ductless Split System Universal Air Handler UNHG0g i UNHG12 i UNHG18 i UNHG24 UNCG 30 8_3 Installation Operation and Maintenance Manual UNCG UNHG P N 240007753 Rev A 0515091...

Page 2: ...or and piping for signs of damage _it_eEMI AmericaSeries high eNciency air handlers is backed by EMi and ECR international and is tested and rated in accordance with AHR1 Standard 210 240 and UL 1995...

Page 3: ...carefully before attempting installation or operation ailure tofollow these instructions may result in improper installation operation service or maintenance possibly resulting infire electrical shoc...

Page 4: ...s on Figure 3 Page 10 to remove the front grille 2 Locate the piston orifice Figure 1 3 Disassemble the orifice joint remove the factory installed orifice and replace with the orifice listed in Figure...

Page 5: ...gure 27 Page 26 Unit control can be used in cooling only cooling with electric heat heat pump or heat pump with second stage electric heat applications Operational range set point temperature adjustab...

Page 6: ...perature _se link when heat option is selected Hand held infrared controller The control is configured for unit mounted control factory default DO NOT connect a wall thermostat to the unit without cha...

Page 7: ...ing to a masonryblock wall there should be a smooth barrier between the unit and the masonryblock surface to ab sorb any potential vibration and prevent the formation of condensate on the wall tltae u...

Page 8: ...ng when unit is ceiling mounted 9 See Figure 7 Page 9 _k_rlocations of openings and knockouts in the cabinet 10 Refrigeration and condensate draining con nections are located in this area Electrical c...

Page 9: ...Figure 7 Dimensions openings and knockouts see legend on page 8 36 914 r 13 3V4 83 3 26 11 51 193 16 2 10 7 16 50 c _ N240007753 Rev A 05S50 9 I _ade in the UoA...

Page 10: ...ted hex so there is approximately 1 2 between the screw head and the keyhole slot Reach through the front of the unit to access these screws as ShOWn iiiiiiiiiiiiiiiiiiii i i i iiiiiiiii iiiiiiiiiiii...

Page 11: ...h the mounting holes to suspend the unit from ceiling supports Ensure the unit is mounted in a manner that will support its weight Figure S Page 11 Wall mounting 1 Secure the unit to the wail with the...

Page 12: ...breaker or time delay fuse size 3 inspect the existing wiring fbr any defects such as cut or flayed wires Replace if any such wiring if found 4 See Figure 8 Page 12 for electrical panel location iiiii...

Page 13: ...Remove control box cover screws to access high voltage wiring compartment Remove contro box cover screws Terminate ALL unused wires with awire nut or crimp connector Low voltage electrical wiring for...

Page 14: ...cooling heat pumps require a reversing valve control wire O orange that is energized in the cooling mode Kthe indoor unit has an electric heater then a W white wire connection will also be needed to e...

Page 15: ...ote wall mounted thermostat configuration Straight Cool Applications O D UNIT i D UNIT OPTIONAL WALL T STAT Some thermostats do not use a C _ terminal Choosing a remote wall mounted thermostat See pag...

Page 16: ...o opt oo J Heat pureps only Two stage heating requires the combination of a heat pump condenser and an indoor unit that is equipped with an electric strip heater _Ihe indoor electric heater will energ...

Page 17: ...a mini mum gradient of 1 Smm per 10 lm _ here must not be any uphill gradients 3 When multiple units are connected to a common condensate drain ensure the drain is lane enough to handle the volume of...

Page 18: ...ct with sharp edges Wrap refrigeration valves with a wet rag heat sink to protect valves while brazing See Figure 19 Page 19 DO NOT use a suction line size larger than the condenser service valve con...

Page 19: ...paint as shown _Ihe shield can be made from scrap metal 3 Braze tubing into fittings using a continu ous nitrogen purge 4 _ lae suction line must be insulated the entire length with closed cell _bam t...

Page 20: ...roperweight charge based on feet of interconnect Figure 22 Page 20 See tables on page 21 Refer to the charts in the condenser manual to fine tune the refrigerant charge UNCG30 utilizes a TXV thermo ex...

Page 21: ...iiii i i i oundtothenearestounceanda owforgaugesandhoses Table 4 S1CG S1HG and top discharge R410A refrigerant charge table S1CG9 UNHG09 25 oz ft 23 g m 3950 S1CG8 S1CG3 UNHG24 UNCG30 64 oz ft 59 g m...

Page 22: ...he cabinet is in position 2 Loosely tighten the upper screws 3 Loosely tighten the two lower cabinet screws 4 insert and tighten the center screws S 2itaen tighten all six screws to secure the cabinet...

Page 23: ...ru and components are operating correctly Select Remote _txermostat OFF in the con figuration For operating details see informa tion beginning on page 29 _IlaeAmericaSeries controller can operate the...

Page 24: ...s to move backwards in menus MODE FAN FAN PROG PROG TiME With the unit ON press to enter or exit sleep timer mode In sleep timer mode the unit will operate for 30 minutes then turn OFF the display wil...

Page 25: ...e the setpoint temperature Holding the button will cause rapid change FAN MODE Press to enter exit fan onlymode no cooling or heating Press to toggle the fan between HIGH LOW and ii AUTO iICOOL MODE P...

Page 26: ...hours OFF 10 get this to ON ifthe ullit isbuilt f orheat pump operation and com ected to an appropriate compressor ullit get this time f orautomatic notice of time to change the f_lter At the end of t...

Page 27: ...ell as the coding and heating setpoints below Heating setpoint 55 90 F q lie ul_it will default to this setpoint widen set to Heating ill pre programmd Access using unit mounted keypad only Press and...

Page 28: ..._ ii_ _i_ _ i iii_ _ _ _ _i_ _ Table 6 Programming schedule when using 7 day programming o o o iiiiiiiiii Hiiii i iii _ i _iiiiii 0 0 o 0 To copy the settings from any day to the entire week 1 Select...

Page 29: ...display the room temperature and the mode of operation coom Heat Auto _auto changeover cool heat Dr Fan While in ON mode the set point tem perature will display momentarily with the push of any button...

Page 30: ...setpoint remains below room temperature Once the room temperature is satisfied t_br at least 60 seconds and the two minute minimum run time has elapsed the com pressor will cycle off Optional ELECTRIC...

Page 31: ...tch off and the heat pump compressor will take over the heating demand _ he electric heater will not re start until a three minute delay has elapsed Once the room temperature is satisfied and the two...

Page 32: ...6 Auto changeover mode will automatically operate either cooling or heating _ tle control will select heating or co oling operation depending on the setpoint temperature room temperature and the diffe...

Page 33: ...t will match the equipment that you have selected Forsingle stage coolingorheating choose a single stage heat cool thermostat Ifyouhaveselected an outdoorheatpump unit and an indoor unit with electric...

Page 34: ...n con tinuous 1 thenthe switch is in the AUTO position the indoor fan will cycle with the call _br heating or cooling COOLING operation t_ewall thermostat will control the call for cooling operation o...

Page 35: ...ontrol must first be configured properly Remote _lher mostat ON heat source ON See Figure 27 Page 26 _ he wall thermostat will control the call for electric heat operation on or off through the lowvol...

Page 36: ...By selecting ON the bacldight will remain on at all times including while in the Off mode interface If Intermittent is selected the bacldight will remain for 10 seconds after the push of any button wh...

Page 37: ...sensor E03 D coil sensor fault 31_eindoor coil sensor monitors the tempera ture of the indoor coil f a freeze condition exists continuously _Sr three minutes the LCD will display error code E03 to sig...

Page 38: ...its are designed and constructed for reliability and long life with minimal mainte nance To insure peak operating et_ciency clean the filter as needed following the pro cedure given here Figure30 Filt...

Page 39: ...en let filter dry before replacing 3 Replace filters clips and front grille before operating the unit Figure 31 Cleaning with a vacuum Replace filters and grille before operating the unit 4 acuum dust...

Page 40: ...nd cap Access the wiring diagram and wiring fol lowing the procedure on page 12 if you are unable to locate the wiring diagram please call the factory technical service line at 800 228 9364 and one ca...

Page 41: ...laevoltage should be 24V_ Test mode Test mode is available fbr unit mounted con trol configuration only Use of test mode can aid in the f_nctional check of the unit It can also be a helpfhl tool when...

Page 42: ...ll interrupt power to the heater should an overheat condition occur Each dectric heat assembly is also equipped with a one time fuse link Ktriggered a new fuse link is required Should dectric heat tem...

Page 43: ...nt temperature one degree above room temperature to call the first stage of heating hen with avoltmeter check for 24 volts across the yellow Y and brown C wires at the condenser The electric heat shou...

Page 44: ...e indoor and outdoor units A EMI condensers are equipped with a manual reset high pressure switch it is located on the rear panel above the service valves To reseL simply push the red button in If the...

Page 45: ...l reduce airflow and efficiency Also check that the coil is dean If the coil is dirty then it should be deaned using an appropriate coil cleaner or mild detergent is the equipment being operated in co...

Page 46: ...both sides of cabinet top and front of cabinet Pounds UNHG12 26 660 11 279 41V2 1054 95 43 UNCG30 27 699 123 s 314 62 1575 153 69 Table 8 Discharge air speed and flow 230 VAC Sound values 09 12 425 20...

Page 47: ...subject to change without notice Please consult the factory for further information Table 9 UNCG UNHG electrical specifications SNALL CAStaNeT09 12 _EDIU_ CABINET 18 24 Table 10 UNCG UNHG interconnect...

Page 48: ...8 000 28 200 24 000 13 0 130 130 130 0 74 08 G77 0 79 0 72 122 12 0 I 1 7 12 0 R410A R410A R410A R410A Table 12 Heat pump system with universal units S1HG9 S1HG8 2HG99 UNHG09 UNHG24 2 UNHG09 9 000 18...

Page 49: ...5 11 S 0 75 15 075 S 075 115 Table 14 System options with T2H T3H orT4H top discharge R410A R410A R410A R410A R410A R410A T2HG88 T2HG98 T3HG999 T3HG992 T3HG224 T4HG2222 2 UNHG24 1 UNHG09 1 UNHG24 3 Ut...

Page 50: ...ering Air DB _ _ Entering Air i Leaving Air iICompressor Suction PSIG i i iiCompressor Volts i Compressor Amps _ID FanMotor Volts Total Amps Compressor Suction i Comfort where it counts 50 P N 2400077...

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Page 52: ...Phone 1 800 228 9364 Fax 1 800 232 9364 7_ _ _ _2_ _ _ _ t_...

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