EMI CAHG09 Installation, Operation And Maintenance Manual Download Page 31 | Manualshive

Page: 31 / 64

EMI CAHG09 Installation, Operation And Maintenance Manual Download Page 31

CACG/CAHG & CACH/CAHH

Air Handlers

• Installation, Operation and Maintenance Manual •

P/N 240008108, Rev. B [082509]

31

CACH/CAHH Microprocessor Controller Overview

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 power is re-

moved from both the indoor cas-

sette unit and outdoor condenser

unit. Failure to comply could

result in severe personal injury

or death.

«
...
29
30
31
32
33
...
»

Summary of Contents for CAHG09

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 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...

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Reviews:

No comments