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CACG/CAHG & CACH/CAHH

Air Handlers

• Installation, Operation and Maintenance Manual •

P/N 240008108, Rev. B [082509]

51

Troubleshooting — General

(continued)

Models CACG/CAHG — Low-voltage interconnections — remote thermostat

Figure 42

operation

Models CACH/CAHH — Low-voltage interconnections — with/without optional

Figure 43

remote thermostat operation

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Содержание CAHG09

Страница 1: ...9 CAHH09 CAHG12 CAHH12 CAHG24 CAHH24 Units 9 000 12 000 18 000 24 000 Btuh 2 6 3 5 5 3 7 0 kW Straight cooling only circuit load two circuits CACG 36 CACH 36 Units 30 000 36 000 Btuh 8 8 10 5 kW Insta...

Страница 2: ...d ECR International and are tested rated and certified in accordance with AHRI Standard 210 240 2008 and UL 1995 Due to ongoing product development product designs and specifications may change withou...

Страница 3: ...explosion or electrical shockcausingpropertydamage personal injury or death Safety Instructions This manual is intended as an aid to quali fied service personnel for proper installa tion operation an...

Страница 4: ...l EMI air handlers are backed by En viromaster International LLC and are tested rated and certified in accordance with ARI standards 210 240 2008 and UL 1995 Verify Unit Before Installing Standard fea...

Страница 5: ...and use R410A refrigerant only Controls and Components factory installed or supplied Connections for 24V remote thermo stat Customcontrolboardfeaturingprogram mability configuration and multiple mode...

Страница 6: ...ssor should the pump become blocked or fail Important Totalliftforthispumpis36 0 9 m or less Air vanes Air outlet vanes are manually adjustable on the models 9 and 12 or driven by an electric motor on...

Страница 7: ...eld The piston will need replacement only on the 24 000 Btuh zone All other applications use the factory installed orifice Follow these instructions to replace the orifice BEFORE mounting the unit Rep...

Страница 8: ...3 4 36 3 8 3 4 NOTICE Piping may be roughed in before wall board or panels are placed in new con struction PVC pipe 3 or 4 I D may be used as a pipe chase Unpacking TheCassettefasciaandmainchassisarep...

Страница 9: ...jacent sides may be blanked off If the fascia discharge slot needs blanking off Remove the inlet grilles and filters see 1 Figure 2 Page 9 and Figure 3 Page 9 Once the grilles and filters are removed...

Страница 10: ...eshouldbeaminimum1 25 4mm 8 clearance above the depth of the cassette and the false ceiling for proper installa tion See Figure 5 Page 10 See the cassette dimensions in the back of this manual for cab...

Страница 11: ...s For previously built concrete slabs install hanging bolts with an expan sion anchor Follow local building codes for required safety cables braces etc Ceiling opening NOTICE Make sure the ceiling gri...

Страница 12: ...as shown in Figure 8 Page 12 Secure the unit in position with locknuts 6 and washers on either side of the cassette bracket Ensure threaded rod does not protrude 7 more than 2 51mm below the mount in...

Страница 13: ...valve at the pump dis charge to prevent water from draining backintotheunit Thispipingtechnique will minimize any issues should the check valve become stuck open from airborne debris Condensate pipe...

Страница 14: ...ockouts varies with unit size Branch duct knock outs are 5 133mm round Fresh air knockouts are 1 x2 32x64mm rectangular on models 9 12 3 76mm square on models 24 and 36 Cut the black insulation around...

Страница 15: ...ontact with sharp edges Wrap refrigeration valves with a wet rag heat sink to protect valves while brazing See Figure 16 Page 16 DONOTuseasuctionlinesizelarger than the condenser service valve con nec...

Страница 16: ...azetubingintofittings usingacontinu 3 ous nitrogen purge The suction line must be insulated the 4 entire length with closed cell foam tube insulation Do not insulate the liquid line 5 Connect the outd...

Страница 17: ...fied charge Use only R410A refrigerant Add and 4 remove only liquid never vapor Chargetoproperweight chargebasedon 5 feet of interconnect Figure 19 Page 17 See tables on page 18 CAUTION Refer to the c...

Страница 18: ...00 12 12 000 Btuh 25 oz ft 23 g m 35 S1CG3 CAC_36 64 oz ft 59 g m 97 50 18 18 000 Btuh 25 oz ft 23 g m 65 S1CG6 CAC_36 64 oz ft 59 g m 110 00 24 24 000 Btuh 25 oz ft 23 g m 63 S2CG S2HG R410A refrige...

Страница 19: ...by plugging it into the socket connection on the chassis Ensure that the polarized connector a 2 position is in the proper orienta tion and connected Route the wires in a way that ensures b they won t...

Страница 20: ...g into Figure 23 socket on chassis Female vane motor plug on chassis Male vane motor plug on fascia Connect infrared unit cable H Figure 24 units only Red stripe is conductor 1 polarized 10 position c...

Страница 21: ...t Ifyouhaveselectedanoutdoorheatpump unitandanindoorunitwithelectricheat then chose a two stage heating single stage cooling thermostat Field supplied thermostats When selecting a thermostat other tha...

Страница 22: ...um load current under non fault conditions at the stipulated voltages Avoid large voltage drops on cable runs 3 particularly in low voltage wiring The correct cable size must be used to 4 ensure a vol...

Страница 23: ...The24Vcontroltransformerislocatedin 1 theevaporator Thisprovideslow voltage controlpowertoboththeevaporatorand condenser Depending on the models selected the low voltage interconnect control wiring m...

Страница 24: ...re proceeding Perform complete inspection NOTICE To perform a system electrical check Turn off all power to the indoor and outdoor units Isolate the compressor to prevent it from operating until the c...

Страница 25: ...rs are correctly positioned NOTICE Theunitisequippedwithasafetyswitch that will activate the pump when the condensate reaches a critical level The safety switch will also de energize the compressor if...

Страница 26: ...cle with the call for heating or cooling CACH CAHH units only The indoor unit utilizes a two speed motor For Remote Thermostat Operation fan speed selection can be made through the DIP switch settings...

Страница 27: ...ptional Heat pump with Electric heat Two stage heating For remote thermostat operation for two stage heating including a heat pump con denser and indoor electric heat the control must first be configu...

Страница 28: ...it mounted display Turn on power to the indoor unit so the 3 controller can be operated Press and hold both the MODE and 4 PROGRAM buttons on the remote for 5 seconds to enter Configuration mode as sh...

Страница 29: ...nt above 3 room temperature Verify that the compressor shuts down 4 Wait for the blower post purge to com 5 plete Then verify that the system shuts down properly Be sure to return DIP switch 1 Test 6...

Страница 30: ...re at the cassette unit The compressor should come on Verify 5 that supply air is cooler than room air Usetheremotetoadjustsetpointtemper 6 ature1 Fabovetheroomtemperature at the cassette unit or just...

Страница 31: ...verview EMI Ductless unit mounted microprocessor controller control panel Figure 33 Dip switches Control panel WARNING Electrical shock hazard Before removing the control box cover make sure that all...

Страница 32: ...y in Test mode This will damage the compressor DO NOT leave the unit in Test mode after setup Return dip switch 1 to the OFF position for normal operation OFF OFF Disables Test mode 2 Louver oscillati...

Страница 33: ...ote Thermostat mode on when power is applied to the unit In Hand Held Controller mode on while the cassette unit is in the ON mode off while unit is in the OFF mode 3 Cooling LED On when the unit is i...

Страница 34: ...temperature Configuration Set Time or Programming mode press to increase the setting DOWN Normal operation press to decrease the setpoint temperature Configuration Set Time or Programming mode press t...

Страница 35: ...connected to an appropriate compressor unit Auto changeover differential see Note 2 04 d b x 2 6 2 Auto changeover automatically operates the unit in heating or cooling based on room temperature vers...

Страница 36: ...Day programming use Table 7 Page 37 to record settings Day of week Mon Tue Wed Thu Fri Sat Sun The louver is closed when the fan is off Period of day Morning Day Evening Night The periods provide fou...

Страница 37: ...day programming Table 7 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 Wedne...

Страница 38: ...e This can happen if commands are entered into the remote but it is not pointed at the cassette To re synchronize Enter any command into the remote while pointing it at the cassette s infrared receive...

Страница 39: ...mode either HIGH or LOW will appear on the LCD Fan Operation The indoor unit utilizes a two speed motor with three operational fan modes High Low and Auto The FAN button will allow the selection of t...

Страница 40: ...ng has cycled off or fol lowing a power outage the compressor will not restart for at least three minutes anti short cycle timer Heating mode Optional Electric heat operation Air Conditioning unit out...

Страница 41: ...sor will switch off The fan will operate as described in Fan 9 Operation see pg 39 Optional Heat pump with Electric heat 2 stage heating For heat pump operation with electric heat the control must fir...

Страница 42: ...he room temperature is greater than 7 the setpoint temperature by more than two degrees the unit will run Cooling mode constantly If the room temperature is within two 8 degrees of setpoint the unit w...

Страница 43: ...the PROGRAM 2 CLOCK buttons are pressed simultane ouslyagainorleftidlefortwentyseconds the control will save the new settings and return to the previous interface mode While in the 7 Day Programming m...

Страница 44: ...y Programming mode Clean Filter Alarm To aid in filter maintenance the cassette con troller will indicate when a scheduled filter cleaning is required by flashing the Timer Alarm LED During normal ope...

Страница 45: ...for heating or cooling has been removed the indoor fan will remain on for an additional sixty 60 seconds This increasesefficiencybypullingtheremain ing energy from the unit Some thermostats are equip...

Страница 46: ...h in Heating mode Adjustthesetpointtemperatureabovethe 8 room temperature The compressor and fan motors will start 9 and heating will begin Depending on the thermostat selected 10 electric heat will a...

Страница 47: ...in the Configuration By selecting OFF the backlight will re main off at all times ByselectingON thebacklightwillremain on at all times including while in the Off mode interface If Intermittent is sel...

Страница 48: ...ze condition is detected continuously for three 3 minutes the Timer Alarm LED will flash three 3 times to signify that a fault has occurred The compressor will switch off for a minimum of three 3 minu...

Страница 49: ...g to clear the retaining clips Figure 39 Page 49 Lift the filter off the grille Place filter c onaflatsurfaceandvacuumanyaway dust and debris vacuum all filters and grills Also vacuum any acces sible...

Страница 50: ...ith EMI ductless condensers The air handle indoor unit and con denser outdoor unit must be indepen dently connected to the electrical service panel and protected by separate time delay fuse or HACR br...

Страница 51: ...nance Manual P N 240008108 Rev B 082509 51 Troubleshooting General continued Models CACG CAHG Low voltage interconnections remote thermostat Figure 42 operation Models CACH CAHH Low voltage interconne...

Страница 52: ...s Y and C of the outdoor unit Y1 and C of the cassette G and C of the cassette fan signal Heat pump units Heatpumpunitsrequire18AWGlow voltage interconnectingwirebetweentheindoorand outdoor units Also...

Страница 53: ...amp draw of the heater 5kw 22 7 A 3kw 13 6 A 1 5kw 6 9 A Theelectricheatrelaycanalsobeverified 4 by placing a voltmeter across the high voltage relay output terminal and the incoming power L2 terminal...

Страница 54: ...eck for a low voltage signal place a voltmeter across terminals Y and C of the outdoor unit Y1 and C of the cassette When the unit is working correctly there should be a reading of 24 Vac Next place t...

Страница 55: ...ure is satisfied there will be a three minute delay before the out door unit is allowed to restart The cassette controller or remote thermostat will also control the indoor fan by switching high volta...

Страница 56: ...located on the high side of the system usually on back panel above service valves To reset push the red button in If the switch was tripped there will be a click when it resets A The cassette air hand...

Страница 57: ...bes Check the indoor air filter It should be clean and free of dirt A dirty filter will reduce airflow and efficiency Alsocheckthatthecoilisclean Ifthe coil is dirty then it should be cleaned using an...

Страница 58: ...9 NOTICE Due to ongoing product development designs specifications and performance are subject to change without notice Please consult the factory for further information Features 1 Optional discharge...

Страница 59: ...8 90 226 J ref 2 67 68 3 38 86 3 38 86 K 25 86 657 35 61 904 47 78 1214 L 12 76 324 18 69 475 24 73 628 M 1 73 44 1 97 50 1 97 50 N ref 2 16 55 2 72 69 2 72 69 O 5 12 130 5 12 130 5 12 130 P ref 11 34...

Страница 60: ...frigerant Type R410A CONNECTIONS Model 9 12 24 36 Suction Liquid 3 8 3 8 Condensate Drain I D I D I D Branch Duct 5 5 5 Fresh Air Duct 1 x 2 3 x 3 3 x 3 FILTRATION Model 9 12 24 36 Type Washable Mesh...

Страница 61: ...CAC_36 36 000 13 0 0 72 11 5 R410A S2C9900 2 CAH_09 18 000 13 0 0 75 11 5 R410A S2C2200 2 CAH_12 24 000 13 0 0 75 11 5 R410A S2C9200 1 CAH_09 1 CAH_12 21 000 13 0 0 75 11 5 R410A Heat pump systems Ta...

Страница 62: ...2 40 500 13 0 0 0 75 11 5 R410A System options with T2H T3H or T4H top discharge Table 16 Condenser Cassette Cooling Btuh Heating Btuh SEER HSPF SHR EER COP Ref T2H8800 2 CAH_24 36 000 26 400 13 0 7 7...

Страница 63: ...otor Volts ID Fan Motor Amps Total Volts Total Amps Temperatures Degrees F Compressor Suction Compressor Discharge Liquid Out Cond Liquid before Expansion Suction out Evaporator Capacity Calculations...

Страница 64: ...s Product Line Indoor Units Outdoor Units S1CG S1HG Single Zone Side Discharge S2CG S2HG Dual Zone Side Discharge WLCG WLHG High Wall Air Handler UNCG UNHG Universal Floor or Ceiling Air Handler CACG...

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