Lennox Humiditrol L Series Installation Instructions Manual Download Page 3 | Manualshive

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LGA/LCA036−072 Parts Arrangement

FIGURE 2

LGA

CONDENSER FAN

COMPRESSOR

CONDENSATE

DRAIN

BLOWER

TB1

LCA

FILTERS

ELECTRIC

HEAT

(OPTIONAL)

CONDENSER FAN

HEAT EXCHANGER

COMPRESSOR

EVAPORATOR COIL

BLOWER

TB1

COMBUSTION

AIR INDUCER

GAS VALVE

BURNERS

FILTERS

DISCONNECT

(OPTIONAL)

ECONOMIZER

(OPTIONAL)

120V GFI OUTLET

(OPTIONAL)

CONDENSATE

DRAIN

ECONOMIZER

(OPTIONAL)

DISCONNECT

(OPTIONAL)

120V GFI OUTLET

(OPTIONAL)

REHEAT COIL

EVAPORATOR COIL

REHEAT COIL

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Summary of Contents for Humiditrol L Series

Page 1: ...5 TON 504 417M 8 2001 Supersedes 4 2001 L SERIES PACKAGED UNITS Table of Contents DIMENSIONS 1 PARTS ARRANGEMENTS 2 SHIPPING AND PACKING LIST 3 GENERAL 3 UNIT SUPPORT 3 DUCT CONNECTION 4 CONDENSATE D...

Page 2: ...46 1 2 1181 EXHAUST AIR OUTDOOR AIR 15 381 END VIEW Economizer Outdoor Air Dampers CONDENSATE DRAIN EVAPORATOR COIL BLOWER 45 1143 5 1 8 130 24 3 4 629 FILTERS OPTIONAL OUTDOOR AIR HOOD Factory or Fi...

Page 3: ...TRIC HEAT OPTIONAL CONDENSER FAN HEAT EXCHANGER COMPRESSOR EVAPORATOR COIL BLOWER TB1 COMBUSTION AIR INDUCER GAS VALVE BURNERS FILTERS DISCONNECT OPTIONAL ECONOMIZER OPTIONAL 120V GFI OUTLET OPTIONAL...

Page 4: ...rty damage Turn off gas and electrical power to unit before performing any maintenance or servicing operations on the unit Follow lighting instructions attached to unit when putting unit back into ope...

Page 5: ...our sides of unit base Supports must be constructed of steel or suitably treated wood materials NOTE Securely fasten roof frame to roof per local codes Duct Connection All exterior ducts joints openin...

Page 6: ...provided upstream of gas supply connection to the unit Install a ground joint union between the gas control manifold and the main manual shut off valve See figure 6 Compounds used on threaded joints o...

Page 7: ...ve filters from unit and slide into filter channels If the filters have a metal frame remove the cardboard shipping pad protecting the evaporator coil B Intake Hood The intake hood top panel is secure...

Page 8: ...rmostat where it might be affected by drafts or dead spots behind doors and in corners hot or cold air from ducts radiant heat from sun or units concealed pipes and chimneys B Control Wiring 1 Route t...

Page 9: ...HERMOSTAT HAS NO NIGHT SETBACK TERMINALS 19 20 21 VOUT GND VIN A91 HUMIDITY SENSOR Connect shield drain to unit TB1 7 1 2 18 FIGURE 12 24 VOLT FIELD WIRING IN ZONE SENSOR MODE ECTO 6 01 OPTION 1 2 OR...

Page 10: ...the static pressure and RPM readings to determine unit CFM 6 The CFM can be adjusted at the motor pulley see section C Blower Belt Adjustment C Blower Belt Adjustment Maximum life and wear can be obt...

Page 11: ...85 1 20 0 90 1250 1 40 1 04 1800 850 630 0 50 0 37 730 0 55 0 41 820 0 65 0 48 905 0 75 0 56 985 0 85 0 63 1060 1 00 0 75 1130 1 10 0 82 1200 1 30 0 97 1265 1 45 1 08 1900 895 665 0 55 0 41 760 0 65 0...

Page 12: ...1 01 1255 1 50 1 12 1900 899 565 0 35 0 26 665 0 45 0 34 755 0 55 0 41 840 0 65 0 48 920 0 80 0 60 995 0 90 0 67 1065 1 05 0 78 1135 1 25 0 93 1200 1 40 1 04 1265 1 60 1 19 2000 945 595 0 40 0 30 690...

Page 13: ...21 0 12 31 0 12 30 0 04 10 1600 755 0 05 13 0 10 26 0 15 38 0 16 40 0 04 10 1800 850 0 06 16 0 12 31 0 18 46 0 21 52 0 05 12 2000 945 0 07 18 0 14 36 0 21 53 0 25 62 0 05 12 2200 1040 0 09 21 0 17 42...

Page 14: ...ased on terminal velocities of 75 ft 22 9 m per minute TABLE 9 FD11 95 CEILING DIFFUSER AIR RESISTANCE Air Volume Effective Throw cfm L s ft m 2600 1225 19 24 6 7 2800 1320 20 28 6 9 3000 1415 21 29 6...

Page 15: ...and blower rotation must match rotation marking If pressure differential is not observed or blower rotation is not correct 3 Disconnect all remote electrical power supplies 4 Reverse any two field in...

Page 16: ...4_F 1 7 7_C 1 LGA LCA048H Humiditrol Units 16_F 1 9_C 1 LGA LCA060H Humiditrol Units 15_F 1 8 3_C 1 F Compressor Controls 1 High Pressure Switch S4 The compressor circuit is protected by a reset high...

Page 17: ...off shut off the manual gas valve to the unit before shutting off electrical supply WARNING Electric shock hazard Can cause injury or death Do not use this unit if any part has been under water Immedi...

Page 18: ...gas valve counterclockwise to NON Do not force 36E Turn the knob 180 either way to HON 8 Close or replace the heat section access panel 9 Turn on all electrical power to appliance 10 Set thermostat to...

Page 19: ...the blower transition in both standard and high heat units C Heating Adjustment 1 Main burners are factory adjusted for proper flame Air shutters are provided for localized areas if necessary 2 Burne...

Page 20: ...orator coil is cooled and dehumidified the reheat coil adds heat to supply air See figure 19 for reheat refrigerant routing and figure 20 for standard cooling refrigerant routing REHEAT MODE REFRIGERA...

Page 21: ...clean and free of obstructions and debris Read Relative Humidity At IMC Turn MODE DIP HTEMP switch 4 HON Display will alternately flash from readout to output A single push on the pushbutton will tog...

Page 22: ...s initiated Compressor does not de energize L14 reheat valve is de energized for compressor cooling 3 Compressor reheat is in operation and outdoor air is suitable for free cooling then reheat demand...

Page 23: ...el should be checked and cleaned prior to the heating season However it should be examined periodically during the heating season to establish an ideal cleaning schedule With power supply disconnected...

Page 24: ...debris may become trapped between the slabs To clean between slabs carefully separate coil slabs and wash them thoroughly See figure 24 G Supply Air Blower Wheel Annually inspect supply air blower wh...

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