Lennox LCH092H Page 4 Installation Instructions Manual Download

Page: 4 / 48

Page 4

LGH092, 094, 102, 120, 122, 150 & 152 PARTS ARRANGEMENT

UNIT

CONTROLLER

EVAPORATOR

COIL

CONDENSER FANS

(2 FANS ON 092, 102, 120,

150 UNITS; 3 FANS ON

094, 122, 152 UNITS)

CONDENSER

COIL

COMPRESSORS

CONDENSATE

DRAIN

FILTERS

(FOUR - 20 X 25 X 2”)

ECONOMIZER

(OPTIONAL)

BLOWER MOTOR

(BELT DRIVE

SHOWN)

GAS VALVE

BURNERS

COMBUSTION

AIR INDUCER

DISCONNECT /

CIRCUIT BREAKER

(FACTORY OR FIELD
INSTALLED OPTION)

BLOWER

INVERTER (OPTIONAL)

OR INDOOR BLOWER

TRANSFORMER (575V

UNITS WITH DIRECT

DRIVE BLOWER)

HINGED

ACCESS PANEL

(OPTIONAL)

OUTDOOR FAN

TRANSFORMER (094, 122,

152 460V OR 570V UNITS)

LCH092, 094, 102, 120, 122, 150 & 152 PARTS ARRANGEMENT

OUTDOOR FAN

TRANSFORMER (094, 122,

152 460V OR 570V UNITS)

ELECTRIC HEAT

(Optional)

CONDENSER FANS

(2 FANS ON 092, 102, 120,

150 UNITS; 3 FANS ON

094, 122, 152 UNITS)

CONDENSER

COIL

COMPRESSORS

CONDENSATE

DRAIN

FILTERS

(FOUR - 20 X 25 X 2”)

BLOWER

DISCONNECT /

CIRCUIT BREAKER

(FACTORY OR FIELD
INSTALLED OPTION)

HINGED

ACCESS PANEL

(OPTIONAL)

UNIT

CONTROLLER

EVAPORATOR

COIL

ECONOMIZER

(OPTIONAL)

BLOWER MOTOR

(BELT DRIVE

SHOWN)

INVERTER (OPTIONAL)

OR INDOOR BLOWER

TRANSFORMER (575V

UNITS WITH DIRECT

DRIVE BLOWER)

Summary of Contents for LCH092H

Page 1: ...Lifting Page 7 Condensate Drains Page 7 Gas Piping Page 9 Pressure Test Gas Piping Page 10 High Altitude Derate Page 11 Electrical Connections Page 11 Blower Operation and Adjustments Page 14 INSTALLA...

Page 2: ...NING 24 610 5 5 8 143 6 1 8 156 6 1 8 156 6 5 8 168 28 711 27 686 20 508 AA DD EE FF BOTTOM BASE BASE CONDENSATE 101 1 4 2572 BB CC BOTTOM SUPPLY AIR OPENING 60 1 8 1527 34 7 8 886 7 178 7 178 BOTTOM...

Page 3: ...24 610 5 5 8 143 6 1 8 156 6 1 8 156 6 5 8 168 28 711 27 686 20 508 AA DD EE FF BOTTOM CONDENSATE 124 3 8 3159 BB CC BOTTOM SUPPLY AIR OPENING 34 7 8 886 BASE 273 10 3 4 7 178 7 178 BOTTOM POWER ENTR...

Page 4: ...ITS WITH DIRECT DRIVE BLOWER HINGED ACCESS PANEL OPTIONAL OUTDOOR FAN TRANSFORMER 094 122 152 460V OR 570V UNITS LCH092 094 102 120 122 150 152 PARTS ARRANGEMENT OUTDOOR FAN TRANSFORMER 094 122 152 46...

Page 5: ...ive or VFD High efficiency units are available with a belt drive blower equipped with an optional supply air inverter The blower will operate at lower speeds when demand is low and increase to higher...

Page 6: ...stallation instructions Unit Support In downflow discharge installations install the unit on a non combustible surface only Unit may be installed on combustible surfaces when used in horizontal discha...

Page 7: ...ing 4 Place field provided H style pick in place just above top edge of unit Frame must be of adequate strength and length H style pick prevents damage to unit Condensate Drains Make drain connection...

Page 8: ...er access door Refer to figure 6 REMOVE THREE SCREWS PER HINGE FIGURE 6 CONDENSATE DRAIN MULLION UNITS WITH HINGED PANELS FILTER DOOR 3 Open filter access door hinges and carefully remove door 4 Remov...

Page 9: ...Replace the condensate drain mullion and reinstall eight screws 14 Reinstall filter door on hinges Connect Gas Piping Gas Units Before connecting piping check with gas company or authorities having ju...

Page 10: ...main shut off valve and union furnished by installer be installed in gas line external to unit Union must be of the ground joint type After all connections have been made check all piping connections...

Page 11: ...nsformer s Reconnect the red wire 208V Tape the exposed end of the 230V orange wire 2 Route power through the bottom power entry area On gas units or units with electric heat connect power wiring to T...

Page 12: ...ltage they must be routed away from line voltage wiring Use wire ties located on the front border of the control panel to secure thermostat cable Use18 AWG wire for all applications using remotely ins...

Page 13: ...Belden type 8762 or 88760 plenum or equivalent Connect both cable shield drain wires to the Unit Controller as shown in figure 17 Wire runs of 150 feet mm or less Use two separate shielded cables con...

Page 14: ...er during start up If the voltage or phase is incorrect the Unit Controller will display an alarm and the unit will not start A Blower Operation Note On units with staged blowers use the Unit Controll...

Page 15: ...MOTOR MOUNTING BASE LOOSEN BEFORE ADJUSTING BELT TENSION TWO EACH SIDE REMOVE TWO SCREWS ON EACH SIDE TO SLIDE FRAME PARTIALLY OUT OF UNIT FOR SERVICE ACCESS MOTOR BLOWER HOUSING BLOWER FRAME GAP BETW...

Page 16: ...surements are taken 2 With all access panels in place measure static pressure external to unit from supply to return Blower performance data is based on static pressure readings taken in locations sho...

Page 17: ...adjusting bolt to the left or counterclockwise to loosen belt tension IMPORTANT Align edges of blower motor base and mounting frame base parallel before tightening four bolts on the side of base Moto...

Page 18: ...82 1166 1 95 2000 493 0 29 561 0 47 629 0 64 700 0 77 768 0 9 832 1 02 892 1 17 946 1 33 995 1 49 1041 1 66 1085 1 81 1126 1 97 1167 2 12 2250 507 0 37 574 0 56 643 0 72 712 0 86 779 0 99 842 1 13 900...

Page 19: ...05 2 29 1154 2 47 1206 2 68 3000 564 0 66 626 0 84 692 1 01 759 1 16 819 1 32 874 1 49 924 1 68 971 1 88 1017 2 08 1063 2 26 1110 2 44 1158 2 63 1208 2 83 3250 585 0 79 648 0 98 714 1 14 778 1 31 836...

Page 20: ...931 1261 1060 1307 1198 1351 1341 1395 1489 3750 1185 806 1232 931 1277 1063 1322 1201 1365 1348 1407 1499 1448 1657 4000 1254 937 1299 1072 1341 1214 1383 1363 1424 1518 1464 1679 1503 1844 4250 1324...

Page 21: ...ELD INSTALLED ACCESSORY AIR RESISTANCE in w g Air Volume cfm Wet Indoor Coil Gas Heat Exchanger Electric Heat Econo mizer Humiditrol Condenser Reheat Coil Filters Return Air Adaptor Plate Standard Hea...

Page 22: ...45 51 6T 1VP50X7 8 P 8 2187 BK67X1 100244 24 BX65 100245 08 7T 1VP44X1 1 8 100239 07 BK77X1 49K4001 BX68 88K3401 8T 1VP56X1 1 8 P 8 1492 BK85X1 49K4101 BX70 31K9601 9T 1VP50X1 1 8 P 8 1977 BK67X1 1002...

Page 23: ...a low side of 30 vacuum to 250 psi with dampened speed to 500 psi Gauge hoses must be rated for use at up to 800 psi of pressure with a 4000 psi burst rating FIGURE 25 REFRIGERANT STAGES 092H 102H 12...

Page 24: ...Make sure all outdoor air dampers are closed 2 Check each system separately with all stages operating Compare the normal operating pressures see tables 7 9 to the pressures obtained from the gauges Ch...

Page 25: ...sig Disc psig Suct psig Disc psig Circuit 1 110 232 112 270 113 313 116 360 118 411 121 468 120 235 121 274 123 316 125 363 127 415 132 469 139 243 142 281 145 323 146 371 148 423 151 479 155 254 160...

Page 26: ...e psig Outdoor Temperature F 115 105 95 85 75 65 LGH LCH092H4 Charging Curves All Aluminum TXV 580445 03 130 60 70 80 90 100 110 120 Suction Pressure psig Liquid Temperature F 115 105 95 85 75 65 110...

Page 27: ...Pressure psig 115 105 95 85 75 65 60 70 80 90 100 110 120 130 100 110 120 130 140 150 160 170 180 Liquid Temperature F LGH LCH120H Charging Curves All Aluminum TXV Circuit 1 Circuit 2 Outdoor Temperat...

Page 28: ...tem Correct any system problems before proceeding 6 If discharge pressure is high remove refrigerant from the system If discharge pressure is low add refrigerant to the system Add or remove charge in...

Page 29: ...67 135 95 F 400 139 414 137 105 F 451 142 467 140 115 F 508 145 523 143 Charge Verification Approach Method AHRI Testing Fin Tube Coil Continued 1 Using the same thermometer compare liquid temperature...

Page 30: ...ations Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system Correct any system problems before proceeding 6 If discharg...

Page 31: ...ains adequate discharge pressure by de energizing condenser fans when liquid pressure falls below 240 psig 10 1655 kPa 69 S11 is installed in the liquid line Switch closes to energize condenser fan wh...

Page 32: ...turn the gas control knob Never use tools If the knob will not push in or turn by hand do not try to repair it call a qualified service technician Force or attempted repair may result in a fire or ex...

Page 33: ...sensor proves the flame and combustion continues 5 If flame is not detected after first ignition trial ignition control will repeat steps 3 and 4 two more times before locking out the gas valve 6 For...

Page 34: ...U Options EDIT PARAMETER ENTER DATA ID 9 MIN DAMPER LOW BLOWER X X Measure the intake air CFM If the CFM is lower than the design specified CFM for ventilation air use the Unit Controller to increase...

Page 35: ...ton Unit Blower Speed Airflow CFM LGH LCH092 High 3600 LGH LCH102 High 4080 LGH LCH120 High 4800 LGH LCH150 High 6000 TABLE 24 MINIMUM AND MAXIMUM CFM BELT DRIVE ULTRA HIGH EFFICIENCY BLOWERS 094U4M 1...

Page 36: ...o fill in field provided design specified blower CFM TABLE 25 Blower CFM Design Specifications Blower Speed Design Specified CFM Heating Cooling High Cooling Low Ventilation 2 Use the following menu t...

Page 37: ...R POSITION BLOWER ON HIGH X X Measure the intake air CFM If the CFM is lower than the design specified CFM for ventilation air use the Unit Controller to increase the damper percent open If the CFM is...

Page 38: ...efrigerant routing and figure 32 for standard cooling refrigerant routing REHEAT COIL FIGURE 31 REHEAT MODE REFRIGERANT ROUTING STAGE 1 CONDENSER COIL STAGE 2 CONDENSER COIL STAGE 2 EVAPORATOR COIL ST...

Page 39: ...d blower should de energize Default Reheat Operation TABLE 27 Reheat Operation Two Cooling Stages Default T stat and Humid ity Demands Operation Reheat Only Compressor 1 Reheat Reheat Y1 Compressor 1...

Page 40: ...57 2 3 4 70 D Combustion Air Inducer Gas Units A combustion air proving switch checks combustion air inducer operation before allowing power to the gas controller Gas controller will not operate if i...

Page 41: ...porator Coil Inspect and clean coil at beginning of each cooling season Clean using mild detergent or commercial coil cleaner Flush coil and condensate drain with water taking care not to get insulati...

Page 42: ...appropriate character in the configuration I D For example when an economizer is installed using a single enthalpy sensor change configuration I D 1 the second character to S TABLE 29 580730 Units Wi...

Page 43: ...dband for stage 1 power exhaust operation SETTINGS RTU OPTIONS EDIT PARAMETER 85 40 F F Compressor 1 low temp lockout Settings lower than 40 F could void warranty 86 40 F F Compressor 2 low temp locko...

Page 44: ...power exhaust operation TABLE 36 580686 LGH LCH094U4M 122U4M 152U4M 2 Compressor Staged Belt Drive Para meter Factory Setting Field Setting Description 094 122 152 Note Any changes to Smoke CFM setti...

Page 45: ...HIGH blower operation SETTINGS RTU OPTIONS EDIT PARAMETERS 29 101 Open Damper minimum position during G blower operation Setting para meter 29 to 101 disables para meter 29 and passes control to param...

Page 46: ...haust 3 Not Installed N Single Stage S Dual Stage D Unconfigured U Power Exhaust Control 4 Not Installed N Damper Position A 5 Network Module N Not Installed B BACnet L LonTalk Lennox 6 Blower Variabl...

Page 47: ...ed Y Installed 8 Load Shedding N Not Installed G Global P297 pin 9 L Installed on DI 2 U Installed on DI 3 9 Electric Heat Field Installed 1 Air Flow Proving Switch S52 3 Overflow Switch S149 S179 4 M...

Page 48: ..._________ Cooling Checks Compressor Rotation Ambient Temp ________Return Air Temp ________ Supply Air Temp ________ Compressor Amps Compressor Volts Pressures Condenser Fan Amps CC Heater Amps L1 L2 L...

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