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�LCA" PACKAGED COOLING & ELECTRIC HEAT�LGA" PACKAGED COOLING & GAS HEAT
�LHA" PACKAGED HEAT PUMP*Net Cooling Capacity − 150,000 to 284,000 Btuh (44.0 to 83.2 kW)
Gas Input Heating Capacity − 260,000 to 470,000 Btuh (76.2 to 137.7 kW)
*Heat Pump Heating Capacity − 188,000 to 220,000 Btuh (55.1 to 64.5 kW)
�Optional Electric Heat − 15 to 90 kW
Bulletin #210081February 1999
Supersedes
April 1997
LCA/LGA13, 15, 17.5, 20 and 25 Ton(46, 53, 62, 70 and 88 kW)
LHA15 and 20 Ton(53 and 70 kW)
*ARI Certified Ratings
LCA/LGA/LHAPACKAGED L SERIES
ENGINEERING DATA
(See Bulletin #210087 for LCA/LGA300H High Efficiency Unit Data)
156H, 180, 210, 240 and 300S MODELS
�� �1999 Lennox Industries Inc.NOTE � Due to Lennox’ ongoing committment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incuring liability.
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FEATURES
ItemLCA/LGA156H
LCA/LGA/LHA180
LCA/LGA210
LCA/LGA/LHA240
LCA/LGA300S
Air Flow Choice � Bottom (down�flow) or �horizontal (side) supply and return air Standard
Bottom Power Entry � For electrical and gas lines Standard
tested, evaporator coil face split with separate circuits, indoor coil drain connection
extends outside of unit cabinet
Standard
Compressor Crankcase Heaters Standard
Filters � Disposable 2 inch (51 mm) pleated commercial grade Standard
Filter Access � Hinged filter door with tool�less access handles Standard
Integrated Modular Control (IMC) � Solid�state board contains all controls and con�
trol relays to operate unit
Built�in Functions Include:
− Blower On/Off Delay
− Built�in Control Parameter Defaults, ensure proper unit operation when
power is restored after power failure
− Service Relay Output
− Defrost Control
− Dehumidification Control − monitors humidity levels, will allow both heating
and cooling to operate at the same time, as needed, required optional field
installed Dehumidistat
− Dirty Filter Switch Input
− Economizer Control, four modes of operation (outdoor enthalpy, differential
enthalpy, temperature and global)
− Electric Heat Staging, regulates electric heat during building warm�up
− ETM Compatible, various modules (see factory or field installed accessories)
− Extensive Unit Diagnostics, (80 diagnostic codes)
− Permanent Diagnostic Code Storage
− Field Changeable Control Parameters, (65 different parameters)
− Gas Valve Delay Between First and Second Stage
− Indoor Air Quality Input, monitors CO2 levels, adjusts economizer dampers
as needed (four modes of operation), requires optional field installed Indoor
Air Quality (CO2) Sensor
− Low Ambient Controls � Allows unit cooling operation down to 0�F (−17.8�C)− Minimum Run Time
− Night Setback Mode, adjusts setpoint, closes outdoor air dampers and
operates blower on demand, may be customized for special requirements
− Return Air Temperature Limit Control
− Smoke Alarm Mode, (four modes of operation)
− �Strike Three" Low Pressure Control, protects system from low suction
pressure while eliminating nuisance faults
− Thermostat Bounce Delay
− Three Digit Display, (Displays: outdoor temperature, supply air temperature,
return air temperature, economizer damper position, Indoor Air Quality,
control parameters
− Two Stage Heat/Three Stage Cool Thermostat Compatible
− Warm�up Mode, (four modes of operation)
Standard
Outdoor Coil Fans � PVC coated fan guards furnished Standard
Outdoor Coil Fan Motors � Overload protected, permanently lubricated, equipped
with ball bearings, shaft up, wire basket mountStandard
Supply Air Blower � Belt drive, forward curved blades with double inlet, blower wheel
statically and dynamically balanced, ball bearings, grease fittings furnished, adjust�
able pulley (allows speed change), blower assembly slides out of unit for servicing
Standard
Supply Air Motor (Standard Efficiency) � Overload protected, equipped with ball
bearingsStandard
Transformer � 70VA Transformer with built−in circuit breaker Standard
�With optional Horizontal Roof Mounting Frame and Horizontal Return Air Panel Kit.L Series 156H−180−210−240−300S/ Page 2 �
FEATURES − LCA MODELSItem LCA156H LCA180 LCA210 LCA240 LCA300S
Approvals � E.T.L. and C.G.A. listed, efficiency rating verified by C,.S.A., componentsbonded for grounding to meet safety standards for servicing required by U.L., C.S.A.and National and Canadian Electrical Codes, developed in accordance with ISO9002 quality standards
Standard
ARI Ratings � Ratings in accordance with ARI Standard 340/360�93 and certified to ARI Standard � � � �
Compressors � Copeland� Compliant Scroll� type, resiliently mounted on rubbergrommets.
�H" Models �S" Models
Outdoor Coil Construction � Slab type, angled design of coil (33�) inherently protectsit from possible hail damage
Standard
Refrigeration System � Consists of: compressors, condenser coils and direct drive fans,evaporator coil and belt drive blowers, expansion valves, high capacity driers, highpressure switches, low pressure switches, full refrigerant charge, crankcase heaters,freezestats (prevent coil freeze�up during low ambient operation or loss of air), indepen�dent refrigerant circuits (allows staging)
Standard
Warranty � Limited five years compressors, limited one year all other, components seelimited warranty certificate included with unit for details
Standard
FEATURES − LGA MODELS
Item LGA156H LGA180 LGA210 LGA240 LGA300S
Approvals � E.T.L./C.G.A. certified as combination heating/cooling unit for outdoor installa�tion, efficiency rating verified by C,.S.A., bonded for grounding to meet safety standardsfor servicing required by E.T.L./C.G.A. and National and Canadian Electrical Codes, devel�oped in accordance with ISO 9002 quality standards
Standard
ARI Ratings � Ratings in accordance with ARI Standard 340/360�93 and certified to ARI Standard � � � �
Compressors � Copeland� Compliant Scroll� type, resiliently mounted on rubbergrommets.
�H" Models �S" Models
Fan and Limit Controls � Factory installed, 90 second fan �on" time delay, dual limitcontrols (primary and secondary) with fixed temperature setting
Standard
Heat Exchanger � Tubular construction, aluminized steel, life cycle tested Standard
Heating System � Aluminized steel inshot burners, direct spark ignition, electronicflame sensor, redundant automatic dual gas valve with manual shut�off, induced draftblower, flame rollout switch
Standard
Outdoor Coil Construction � Slab type, angled design of coil (33�) inherently protectsit from possible hail damage
Standard
Refrigeration System � Consists of: compressors, condenser coils and direct drive fans,evaporator coil and belt drive blowers, expansion valves, high capacity driers, highpressure switches, low pressure switches, full refrigerant charge, crankcase heaters,freezestats (prevent coil freeze�up during low ambient operation or loss of air), indepen�dent refrigerant circuits (allows staging)
Standard
Warranty � Limited ten years heat exchanger, limited five years compressors, one yearall other components, see limited warranty certificate included with unit for details
Standard
FEATURES − LHA MODELS
Item LHA180 LHA240
Approvals � E.T.L. and C.G.A. listed, efficiency rating verified by C,.S.A., componentsbonded for grounding to meet safety standards for servicing required by U.L., C.S.A.and National and Canadian Electrical Codes, developed in accordance with ISO9002 quality standards
Standard
ARI Ratings � Ratings in accordance with ARI Standard 340/360�93 and certified to ARI Standard
Defrost Control � Furnished on Integrated Modular Control, defrost control providesa defrost cycle, if needed, every 30 or 60 or 90 minutes (adjustable) of compressor �on"time at outdoor coil temperature below 32�F (0�C). Pressure switch mounted on out�door coil vapor line terminates defrost cycle.
Standard
Outdoor Coil Construction � Formed Standard
Refrigeration System � Consists of: compressors, outdoor coils and direct drive fans,indoor coil and belt drive blowers, check and expansion valves (indoor and outdoor),high capacity driers, high pressure switches, low pressure switches, reversingvalves, defrost control, full refrigerant charge, crankcase heaters, freezestats (pre�vent coil freeze�up during low ambient operation or loss of air), independent refriger�ant circuits (allows staging)
Standard
Warranty � Limited five years compressors, limited one year all other components, seelimited warranty certificate included with unit for details
Standard
L Series 156H−180−210−240−300S/ Page 3 �
REQUIRED OPTIONS − ITEMS MUST BE ORDERED AND FACTORY INSTALLEDAir Flow Configuration � specify horizontal or down−flow when ordering base unit
Drive Kit � Order one, see Drive Kit Specifications Table
Gas Input (LGA Models) � Order one:
169,000/260,000 Btuh (49.5/76.2 kW) low/high fire − Standard Heat Gas Input
305,000/470,000 Btuh (89.4/137.7 kW) low/high fire − High Heat Gas Input (not available for LGA156H)
Supply Air Motor � Order one (See Blower Data Table for specifications):
Standard Efficiency
High Efficiency � Overload protected, equipped with ball bearings
Voltage � specify when ordering base unit
OPTIONAL ACCESSORIES
FACTORY INSTALLED ONLY
ItemLCA/
LGA156HLCA/LGA/LHA180
LCA/LGA210
LCA/LGA/LHA240
LCA/LGA300S
Cold Weather Kit � (Canada Only) Electric heater automatically controls minimum tem�perature in gas burner compartment when temperature is below −40�F (−40�C). C.G.A.certified to allow operation of unit down to −60�F (−50�C) LGA Models Only
Factory
Corrosion Protection � Phenolic epoxy coating, applied to condenser coils (with paintedbase section) and evaporator coils (with painted evaporator base section and paintedblower housings), factory applied to either section or both sections
Factory
�Disconnect Switch� Accessible from outside of unit, spring loaded weatherproof coverfurnished Factory
Service Outlets (2) � 115v ground fault circuit interrupter (GFCI) type Factory
�Service Valves − Fully serviceable brass valves installed in discharge and liquid lines Factory
FACTORY OR FIELD INSTALLED
ItemLCA/
LGA156HLCA/LGA/LHA180
LCA/LGA210
LCA/LGA/LHA240
LCA/LGA300S
Blower Proving Switch � Monitors blower operation, shuts down unit if blower fails 18L89
Condensate Drain Trap − field installed only, may PVC 37K70Condensate Drain Trap − field installed only, maybe factory enclosed to ship with unit Copper 48K14
Control Systems � See pages 6 − 11 for complete listing. See pages 6−11
Down�Flow Gravity Exhaust Dampers � Aluminum blade dampers prevent blow backand outdoor air infiltration during off cycle, bird screen furnished − Net Weight LAGED18/24 − 30 lbs. (14 kg)
Economizer � Opposing gear driven recirculated air and outdoor air dampers, plug�in con�nections to unit, nylon bearings, neoprene seals, 24 volt fully modulating spring returnmotor, adjustable minimum damper position, damper assembly slides in unit, outdoor airhood must be ordered separately (see below), optional down�flow gravity exhaust damp�ers available (see below), choice of economizer controls (see below)
LAREMD18/24 − 180 lbs. (82 kg)
Economizer Control Choice �Sensible Control � Furnished on IMC board in unit, uses outdoor air sensor furnishedwith unit to measure outdoor air temperature and control damper position (Furnished)
Global Control � Furnished on IMC board in unit, used with Direct Digital Control (DDC)systems, uses global air sensor to control damper position, determines when to use out�door air for cooling or set damper at minimum position (Furnished)
Outdoor Enthalpy Control � Adjustable enthalpy sensor, senses outdoor air enthalpyfor economizer control, 0 to 100% outdoor air
Differential Enthalpy Control � Two solid�state enthalpy sensors allow selection be�tween outdoor air and return air (whichever has lowest enthalpy)
(16K96) Outdoor(16K97) Differential
Electric Heat (EHA) � helix wound nichrome elements, time delay for element staging, in�dividual element limit controls (45, 60, 90 and 120 kW), may be two�stage controlled, wir�ing harness furnished, requires Electric Heat Control Module, Fuse Block and TerminalBlock (LCA Models Only)
See Electric Heat Data TablesPages 21−24
Electric Heat Control Module � Required with 45, 60 and 90 kW electric heaters, providescontrol of second stage heating LCA Models Only
See Optional Electric HeatElectric Heat Fuse Block � Required with electric Heat, mounting screws furnished
ySee Optional Electric HeatAccessories Table Page 20
Electric Heat LTB2 Terminal Block � Required with electric heatAccessories Table Page 20
Hood for Down−Flow Gravity Exhaust Dampers LAGEH18/30S
Outdoor Air Damper Section − mechanicaldampers, 0 to 25% outdoor air, installs in unitcabinet, outdoor air hood must be ordered
cabinet, outdoor air hood must be orderedseparately (see below) − Net Weight Manual Operation − Linked dampers,
adjustable fixed position outdoor air. LAOAD18/24 − 150 lbs. (68 kg)
�Required if mixed air temperature is between 30 and 45³ (−1 and 7³C).�Not available with 90 kW electric heat.�Not available for LHA models. Continued on Next Page �
L Series 156H−180−210−240−300S/ Page 4 �
OPTIONAL ACCESSORIES
FACTORY OR FIELD INSTALLED (CONTINUED)
ItemLCA/
LGA156HLCA/LGA/LHA180
LCA/LGA210
LCA/LGA/LHA240
LCA/LGA300S
Outdoor Air Hood � Required with LAREMD18/24 Economizer, LAOAD18/24 andLAOADM18/24 Outdoor Air Damper Sections, three cleanable aluminum meshfresh air filters furnished− Net Weight
LAOAH18/24 − 60 lbs. (27 kg.)filter size: (3) 16 x 25 X 1 in. (406 x 635 x 25 mm)
Power Exhaust Fan � Installs external to unit for down�fl li ti l ith i ti
Model Number − Net Weight LAPEF18/24 − 140 lbs. (64 kg)flow applications only with economizer option, pro�vides exhaust air pressure relief, interlocked to run
Dia. − in. (mm) No. Blades (2) 20 (508) − 5vides exhaust air pressure relief, interlocked to runwhen return air dampers are closed and supply airbl i i f h d i d
Total air volume − cfm (L/s) 8630 (4070) @ 0 in. wg (0 PA)when return air dampers are closed and supply airblower is operating, fan runs when outdoor air damp�ers are 50% open (adjustable) motor is overload pro�
Motor Horsepower (W) (2) 1/3 (249)ers are 50% open (adjustable), motor is overload pro�tected, steel cabinet and hood painted to match unit Total Watts Input 750
Smoke Detector � Photoelectric type, installed in sup� Supply 70K87Smoke Detector � Photoelectric type, installed in sup�ply air section or return air section or both sections Return 70K86
FIELD INSTALLED ONLY
ItemLCA/
LGA156HLCA/LGA/LHA180
LCA/LGA210
LCA/LGA/LHA240
LCA/LGA300S
Aspiration box � for duct mounting of Indoor Air Quality Sensor 47N18
Coil Guards − Galvanized steel wire guards to protect outdoor coil. Not used withHail Guards.
88K52
Dehumidistat − Monitors humidity levels, reports to the IMC board which allows theheating and cooling to run simultaneously as needed.
65F86
Diffusers − Aluminum grilles, large center grille, insu�lated diffuser box with flanges, hanging rings fur�nished interior transition (even air flow) internally
Step�Down − doubledeflection louvers
RTD11−185392 lbs. (178 kg)
RTD11−275 − 403 lbs. (183 kg)
nished, interior transition (even air flow), internallysealed (prevents recirculation), adapts to T�bar ceil�ing grids or plaster ceilings− Net Weight
Flush − fixed blade louversFD11−185
289 lbs. (135 kg)FD11−275 − 363 lbs. (165 kg)
Grille Guards � Protects the space between outdoor coils and main cabinet. 72K78
Hail Guards � Constructed of heavy gauge steel, painted to match cabinet, helpsprotect outdoor coils from hail damage. Not used with Coil Guards.
88K25 − LCA/LGA Models88K28 − LHA Models
Horizontal Gravity Exhaust Dampers � Aluminum blade dampers prevent blow backand outdoor air infiltration during off cycle, field installed in return air duct, bird screenfurnished− Net Weight
LAGEDH18/24 − 20 lbs. (9 kg)
Horizontal Return Air Panel Kit � Required for horizontal applications with hori�zontal roof mounting frame, contains panel with return air opening for field re�placement of existing unit panel and panel to cover bottom return air opening inunit, see dimension drawings
38K47
IMC Software and PC Interface Kit 86K84
IMC Software and Manual Only 32K22
PC Interface Kit Only 28K56
Indoor Air Quality (CO2) Sensor � Monitors CO2 levels, reports to IntegratedModular Control (IMC) board which adjusts economizer dampers as needed
93J69
26 inch (660 mm) frames 73K32
Insulation Kit − helps prevent sweating on horizontal 30 inch (762 mm) frames − − − − 73K33Insulation Kit − helps prevent sweating on horizontalroof mounting frames 37 inch (940 mm) frames 73K34g
41 inch (1041 mm) frames − − − − 73K35
LPG/Propane Kits 41L15 (2 kits required)
Roof Mounting Frame � Nailer strip furnished,mates to unit U S National Roofing Contractors
14 inch (356 mm) height LARMF18/36�14 − 160 lbs. (73 kg)mates to unit, U.S. National Roofing ContractorsApproved, shipped knocked down − Net Weight 24 inch (610 mm) height LARMF18/36�24 − 220 lbs. (100 kg)
Roof Mounting Frame (Horizontal) � Nailer strip
26 in. (660 mm) height(for slab applications)
�LARMFH18/24�26 − 420 lbs. (191 kg)
Roof Mounting Frame (Horizontal) � Nailer stripfurnished, mates to unit, converts unit from down�flow to horizontal (side) air flow, shipped knockeddown, return air is on unit, supply air is on frame,
30 in. (762 mm) height(for slab applications)
− − − −�LARMFH30/36�30
445 lbs. (202 kg)down, return air is on unit, supply air is on frame,see dimension drawings. Frames for rooftop ap�plications meet National Roofing Code require�
t R i H i t l R t Ai P l
37 in. (940 mm) height(for rooftop applications)
�LARMFH18/24�37 − 580 lbs. (263 kg)p g qments. Requires Horizontal Return Air Panel, seeabove− Net Weight 41 in. (1041 mm) height
(for rooftop applications)− − − −
�LARMFH30/36�41
725 lbs. (329 kg)
Transitions (Supply and Return) � Used with diffusers, installs in roof mountingframe, galvanized steel construction, flanges furnished for duct connection, fullyinsulated
LASRT1880 lbs. (36 kg)
LASRT21/24 − 75 lbs. (34 kg)
Vertical Vent Extension Kit − to exhaust flue gases vertically above unit (LGA ModelsOnly)
LB−94710A (40L80)
�Either LARMFH30/36−30(−41) or LARMFH18/24−26(−37) roof mounting frames may be used for the 300S models, however, the smaller frames (LARMF18/24) will increasestatic pressure.
L Series 156H−180−210−240−300S/ Page 5 �
OPTIONAL DDC TEMPERATURE CONTROL SYSTEMS (Factory or Field Installed)System and Component Description Field Installed Catalog No.
AMERICAN AUTOMATRIX KIT
Control module/Blower Proving Switch/Return Air Sensor/Discharge Air Sensor/Wiring Harness � Stand alonecontrol of all heating cooling and economizer functions, various operations modes (including: occupied, unoccupied), 8universal inputs, momentary override, indoor air quality control, alarm monitoring of: sensors, airflow, economizer, dirtyfilter, heating/cooling operation, cooling limit.
Control Module/Blower Proving Switch/Return Air Sensor/Discharge Air Sensor/Wiring Harness � Network com�munication (RS−485, 2 or 4 wire, 300, 1200 or 9600 baud selectable), 2 stage cool/ 2 stage heat, zone temperature moni�toring, discharge temperature monitoring, dirty filter monitoring, LED’s for system monitoring, 5 SPDT outputs, batterybackup, Blower Proving Switch monitors blower operation and locks out unit in case of blower failure, Return Air Sensorprovides input to module to determine heating or cooling operation and number of stages required, Discharge Air Sensormonitors leaving air temperature during unit operation
Control Module/Blower Proving Switch/Return Air Sensor/Discharge Air Sensor/Wiring Harness � Network com�munications (RS−485, shielded pair twisted wire), 8 analog/digital inputs, 8 form−C relay outputs, 2 analog outputs, 24 VAC,output connections (2 stage heat/2 stage cool, 2 auxiliary outputs (user defined), economizer, fan), input connections(space temperature, discharge and return air temperature, 2 compressor monitoring, 2 aux. inputs (user defined), localoverride (1 to 240 minutes), Blower Proving Switch monitors blower operation and locks out unit in case of blower failure,Return Air Sensor provides input to module to determine heating or cooling operation and number of stages required, Dis�charge Air Sensor monitors leaving air temperature during unit operation
Control Module/Blower Proving Switch/Return Air Sensor/Discharge Air Sensor/Wiring Harness � Small pointcount controller, supports free�form modular DDC programming, intelligent I/STAT for independent local analog or digitalcontrol, local override and setpoint adjustment, 4 local or global points, integral start/stop schedule, standalone operation,universal inputs (thermistor, voltage, current, contact), 8 relay or low voltage triac outputs, analog outputs, 7 signal inputsplus power, ISTAT port, MR LAN port (RS−485, shielded pair twisted wire), self test diagnostics with LED readout, inputpoint parameters (normal and narrow range, indoor and outdoor temperature range, individual calibration)
28K58
Sensor � Room temperature sensor with microprocessor data communications and power, alphanumeric LCDdisplay for modes selected, mode selection push buttons for (Function, Call, Service, Change and Select), passwordprotection for Service mode, up to 4 global point assignment with red LED’s to indicate (Set Temp., Fan Speed,Room and Outside)
Control Module (W7750A)/Blower Proving Switch/Return Air Sensor/Wiring Harness � Standalone control (stagedor modulating) of all heating, cooling, mixed air, system fan and economizer functions, up to four stages of heating/coolingcombinations, for single zone applications, 6 relay outputs, 2 digital inputs, 1 resistive analog input, network communica�tions, LonMark compliant, configuration options include: supply fan type of air handler, occupancy sensor, window sensor,wall module option, dirty filter monitor, indoor air quality override and smoke control. modes of operation include: occupied,standby, unoccupied, bypass occupied, override modes, start−up and wait, cooling, heating, emergency heat, off mode,disabled mode, smoke emergency, freeze protect, manual position, fan only and disabled. Blower Proving Switch moni�tors blower operation and locks out unit in case of blower failure, Return Air Sensor provides input to module to determineheating or cooling operation and number of stages required.
20L39
Sensor � Room temperature, with setpoint knob 19L21
Control Module/Blower Proving Switch/Return Air Sensor/Discharge Air Sensor/Wiring Harness � Local and re�mote monitoring and alarming (smoke alarms, dirty filter, freezestat, heating and cooling failures, run time accumulationfor overrides, zone high/low temperature alarms, fan failure alarm, space humidity), heating and cooling control, econo�mizer control, up to 4 stages with minimum on/off times, auxiliary heat for heat pump control, intelligent recovery, humidityand indoor air quality control, four relay outputs, network communications (RS−485, shielded pair twisted wire), space tem�perature inputs, room or return air temperature control, precise proportional plus integral (P+I) control, control loops pro�vide accurate unit control without temperature droop, Blower Proving Switch monitors blower operation and locks out unitin case of blower failure, Return Air Sensor provides input to module to determine heating or cooling operation and numberof stages required, Discharge Air Sensor monitors leaving air temperature during unit operation
Control Module/Blower Proving Switch/Wiring Harness �Standalone control of all heating, cooling and economizerfunctions, various operation modes (including: occupied, unoccupied, warm�up, standby), network communications, 6analog inputs, 4 binary inputs, momentary override, zone lighting control, advanced unit diagnostics, indoor air qualitycontrol, outdoor air temperature and humidity monitoring, alarm monitoring of: sensors, airflow, economizer, dirty filter,heating /cooling operation, cooling limit, Blower Proving Switch monitors blower operation and locks out unit in case ofblower failure, Control module for use in single zone applications.
86K65
Sensor � Room temperature, phone jack style wiring, quick−mount design, latching door mechanism, setpointadjustment (warmer/cooler), optional override button, nickel sensors, options for choosing setpoint, indicationmounting and wiring type, plug for handheld commissioning tool (60K36).
�Field installs in return air duct. Two dampers furnished per order no.
L Series 156H−180−210−240−300S/ Page 6 �
OPTIONAL DDC TEMPERATURE CONTROL SYSTEMS (Factory or Field Installed)
System and Component Description Field Installed Catalog No.
JOHNSON METASYS UNT KIT
Control Module/Blower Proving Switch/Wiring Harness �Standalone control of all heating, cooling and econ�omizer functions, various operation modes (including: occupied, unoccupied, warm�up, standby), network commu�nications, 6 analog inputs, 4 binary inputs, momentary override, zone lighting control, advanced unit diagnostics,indoor air quality control, outdoor air temperature and humidity monitoring, alarm monitoring of: sensors,airflow, economizer, dirty filter, heating /cooling operation, cooling limit, Blower Proving Switch monitorsblower operation and locks out unit in case of blower failure, Control module may be used in multi−zoneapplications (i.e. L−Zone).
34K84
Commissioning Tool � Hand−held interface tool, monitor and adjust 36 analog and binary points, password protected, carrying case.
60K37
Sensor � Room temperature, phone jack style wiring, quick−mount design, latching door mechanism,setpoint adjustment (warmer/cooler), optional override button, nickel sensors, options for choosingsetpoint, indication, mounting and wiring type, plug for handheld commissioning tool (60K36).
Electronic Thermostat Module (ETM)/Blower Proving Switch/Return Air Sensor/Discharge Air Sensor/Wiring Harness � Module monitors unit operation from different sensors installed in unit, has outputs for 2stage heat/2 stage cool, automatic or continuous blower operation, economizer damper operation and nightsetback, features: day/occupied mode with low enthalpy (outdoor air damper open), high enthalpy (outdoor airdamper closed) or night/unoccupied mode (outdoor air damper closed), network communication (RS−485,shielded pair twisted wire), local override (1 to 255 minutes), watchdog function, fail−safe operation, ETM al�lows units to be �daisy chained" together (up to 31 units) to be operated from one central location with an�executive" type control processor (onsite or offsite), built�in time delays, built�in unit operating defaults, diag�nostic LED’s indicate various operating functions, surge suppression protects ETM against lightning or voltagespikes, Blower Proving Switch monitors blower operation and locks out unit in case of blower failure, ReturnAir Sensor provides input to ETM module to determine heating or cooling operation and number of stagesrequired, Discharge Air Sensor monitors leaving air temperature during unit operation
Room Temperature Sensor with Built−in Night Setback Override Button � Provides input to ETM mod�
ule to determine heating or cooling operation and number of stages required (ordered separately). Override
button allows momentary override of night setback during unoccupied mode.
67K61
NOVAR CUSTOM CONTROLLER KIT
Control Module/Blower Proving Switch/Discharge Air Sensor/Room Air Sensor/Wiring Harness � User defin�able comfort setpoint, on/off and time of day control, cycle II ventilation control
OPTIONAL CONVENTIONAL TEMPERATURE CONTROL SYSTEMS(FACTORY OR Field Installed)
HONEYWELL W973 KIT
Logic Panel/Discharge Air Sensor/Wiring Harness � Panel controls operation of economizer and stages of heat�ing and cooling in response to signals from thermostat, balances conditioned space thermostat demand against sys�tem output, system output measured by discharge air sensor (furnished), combined demand and output signals deter�mine economizer damper position and number of cooling or heating stages required, logic panel may be installed inunit or remotely located
28K60
Thermostat � Dual setpoint, separate heating�cooling levers, locking setpoints, integral sensor 25C52
Subbase � Switching with system selector switch (Heat�Auto�Off�Cool), fan switch (Auto�On) 58C93 (for LCA/LGA)
Subbase � Switching with system selector switch (Cool�Auto�Heat�Emergency Heat), fan switch (Auto�On) 58C94 (for LHA)
Transmitter � Dual setpoint, separate heating�cooling levers, locking setpoints, requires subbase with room tem�perature sensor or return air temperature sensor 25C51
Subbase � Switching with system selector switch (Heat�Auto�Off�Cool), fan switch (Auto�On) 58C93
Sensor � Room temperature 58C92
Sensor � Return air temperature 27C40
Time Clock � 7 day operation, indicates day and night periods, 2 hour increments, battery back�up See Price Book for Selection
Time Clock � 24 hour night setback operation, 15 minute increments, battery back�up See Price Book for Selection
Blower Proving Switch � Monitors blower operation, locks out unit in case of blower failure 30K49
HONEYWELL W7620 KIT 2 Heat�/�2 Cool Includes: Control Module, Blower ProvingSwitch, Return Air Sensor, Discharge Air
Sensor and Wiring Harness
START
JOHNSON FACILITATOR FA−UNTNO
START
STOP
TE�6411ROOM
SENSOR
(60K12)
DIRTYFILTERSWITCH
(30K48)
NO
JOHNSON FACILITATOR FA−UNT KIT2 Heat�/�2 Cool
Includes: Control Module, Discharge Air Sensor,Return Air Sensor, Blower Proving Switch
and Wiring Harness
JOHNSON METASYS UNTNO
JOHNSON METASYS UNT KIT 2 Heat�/�2 Cool Includes: Control Module, Discharge Air Sensor, Re�turn Air Sensor, Blower Proving Switch and Wiring
Harness
START
NO
STOP
TE�6411ROOM
SENSOR
(60K12)
DIRTYFILTERSWITCH
(30K48)
NOVAR ETM−2050
STOP
START
ROOMSENSOR
(97H53)
NO
DIRTYFILTERSWITCH
(30K48)
NO
NIGHT SETBACKOVERRIDESWITCH
(Field Furnished)
NOVAR ETM�2050 KIT 2 Heat�/�2 CoolIncludes: Control Module, Blower ProvingSwitch, Return Air Sensor, Discharge Air
Sensor and Wiring Harness
NOVAR ETM−2051
STARTNOVAR ETM�2051 KIT 2 Heat�/�2 CoolIncludes: Control Module, Blower ProvingSwitch, Return Air Sensor, Discharge Air
Sensor and Wiring Harness
NO
STOP
ROOM SENSOR W/NIGHT SETBACK
OVERRIDE BUTTON
(67K61)
DIRTYFILTERSWITCH
(30K48)
NO
NOVAR CUSTOM CONTROLLER
START
STOP
DIRTYFILTERSWITCH
(30K48)
NO
NOVAR UVC�8 KIT2 Heat�/�2 Cool (48K89)
Includes: Control Module, Blower ProvingSwitch, Discharge Air Sensor, Room Air
Sensor and Wiring Harness
L Series 156H−180−210−240−300S/ Page 9 �
CONVENTIONAL COMMERCIAL TEMPERATURE CONTROL SELECTION FLOWCHARTS
ELECTRO−MECHANICAL THERMOSTAT
24 HOURTIME
CLOCK
NO
STOP
ELECTROMECHANICALTHERMOSTAT
(13F06)2 Heat�−�2 Cool
START
NONSWITCHINGSUBBASE
(13F16)
SWITCHINGSUBBASE
(13F17)
NIGHTTHERMOSTAT
1 Heat
(13F12)
NONSWITCHINGSUBBASE
(13F16)
7 DAYTIME
CLOCK
NO NO
BLOWERPROVESWITCH
(30K49)
DIRTYFILTERSWITCH
(30K48)
ELECTRONIC THERMOSTAT
STOP
*ELECTRONICROOM
THERMOSTAT2 Heat�−�2 Cool
START
24 HOURTIME
CLOCK
7 DAYTIME
CLOCK
NO NO
BLOWERPROVESWITCH
(30K49)
DIRTYFILTERSWITCH
(30K48)
LESS ECONOMIZER
WITH ECONOMIZER
NO
* Any 2 stage heat/ 2 stage cool electronicthermostat may be used.See Lennox Price Book, Thermostats and Controls, Tab for selection.
HONEYWELL T7300 THERMOSTAT
ROOMTEMPERATURE
SENSORW/OVERRIDE
(86G67)
NO
STOP
T7300THERMOSTAT
(37L54)
STARTSWITCHINGSUBBASE
(37L53)2 Heat�−�2 Cool
NO NO
BLOWERPROVESWITCH
(30K49)
DIRTYFILTERSWITCH
(30K48)
ROOMTEMPERATURE
SENSOR
(58C92)
RETURN AIRTEMPERATURE
SENSOR
(27C40)
HONEYWELL W973 THERMOSTAT
REMOTESETPOINT
TRANSMITTER
(25C51)
RETURN AIRTEMPERATURE
SENSOR
(27C40)
24 HOURTIME
CLOCK
DIRTYFILTERSWITCH
(30K48)
ROOMTHERMOSTAT
(25C52)
HONEYWELL W973 KIT2 Heat�/�2 Cool (28K60)
Includes: Logic Panel, Discharge AirSensor and Wiring Harness
7 DAYTIME
CLOCK
NO
ROOMTEMPERATURE
SENSOR
(58C92)
SWITCHINGSUBBASE
(58C93)
NO
STOP
SWITCHINGSUBBASE
(58C94)
LCA/LGA
LHA
START
BLOWERPROVINGSWITCH
(30K49)
L Series 156H−180−210−240−300S/ Page 10 �
FIELD WIRING
OPTIONALTIME
CLOCK
OPTIONALTHERMOSTAT
ORTRANSMITTER
OPTIONALREMOTE
TEMPERATURESENSOR
OPTIONALDISCONNECT
SWITCH
D
B
E
F
C
A
HONEYWELL W973 CONTROL SYSTEMA � Two or Three wire power (See Electrical Data Table)B � Seven wire low voltage � DC only
Seven wire low voltage � DC only � with switching subbaseC � Two wire low voltage � AC only � with switching subbaseD � Two wire low voltage � DC onlyE � Two wire low voltage � AC onlyF � Two wire powerG � Two wire power (115 volt)H � Four wire low voltage � DC only
AC � Alternating currentDC � Direct current
NOTE � Run separate harness for AC and DC.AC voltage interferes with DC signals.
� Field wiring not furnished �
NOTE � All wiring must conform to NEC or CEC and local electrical codes.
SINGLEPACKAGE
UNIT
115 VOLTSERVICEOUTLET
G
OPTIONALINDOOR AIRQUALITY CO2
SENSOR
H
ELECTRO�MECHANICAL, ELECTRONIC OR HONEYWELL T7300 THERMOSTAT CONTROL SYSTEM
OPTIONALTHERMOSTAT
OPTIONALNITE
THERMOSTAT
OPTIONALDISCONNECT
SWITCH
OPTIONALTIME
CLOCK
OPTIONALINDOOR AIRQUALITY CO2
SENSOR
115 VOLTSERVICEOUTLET
SINGLEPACKAGE
UNIT
A � Two or Three wire power (See Electrical Data Table)
B � Six wire low voltage (Electro�Mechanical)
Seven wire low voltage (Electronic)
Nine wire low voltage (Honeywell T7300)
Ten wire low voltage (Honeywell T7300 with Service LED)
C � Two wire low voltage (Electro�Mechanical Only)
D � Four wire low voltage (All Systems)
E � Two wire power
F � Two wire power (115 volt)
G � Two wire low voltage
� Seven wire low voltage (T7300 Room Sensor with override)
� Field wiring not furnished �
NOTE � All wiring must conform to NEC or CEC and local electrical codes.
AB
C
E
D
ALL DDC CONTROL SYSTEMS
FIELD FURNISHEDGLOBAL
CONTROLLER
OPTIONALDISCONNECT
SWITCH
OPTIONALROOM
SENSOR
115 VOLTSERVICEOUTLET
SINGLEPACKAGE
UNIT
AB
C
D
E
A � Two or Three wire power (See Electrical Data Table)
B � RS�485 shielded pair twisted wire
C � Four wire low voltage
D � Two wire low voltage (Andover Infinity, CPC 810�3060 and Novar ETM�2050)
Three wire low voltage (CSI MR88R)
Four wire low voltage (Johnson Metasys, Honeywell W7620)
Four wire low voltage (Novar Custom Controller) + 2 wire low voltage (Novar
UVC�8 Sensor)
Seven wire low voltage (Honeywell Excel 10)
E � Two wire power (115 volt)
� Field wiring not furnished �
NOTE � All wiring must conform to NEC or CEC and local electrical codes.
OPTIONALINDOOR AIRQUALITY CO2
SENSOR
F
OPTIONALREMOTE
TEMPERATURESENSOR
G
HIGH ALTITUDE DERATE (LGA MODELS)Units may be installed at altitudes up to 2000 feet (610 m) above sealevel without any modification. At altitudes above 2000 feet (610 m), unitsmust be derated to match gas manifold pressures shown in table below.
NOTE � This is the only permissible derate for these units
Altitude − ft. (m) Gas Manifold Pressure − in. w.g. (kPa)
�Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of motorsfurnished by Lennox are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the servicefactor limitations outlined on the motor nameplate.Rated in accordance with ARI Standard 340/360 and certified to ARI; 95�F (35�C) outdoor air temperature and 80�F (27�C) db/67�F (19�C) wb entering evaporator air; minimumexternal duct static pressure. Integrated Part Load Value tested at 80�F (27�C) outdoor air temperature.NOTE � ARI capacity is net and includes evaporator blower motor heat deduction. Gross capacity does not include evaporator blower motor heat deduction.
�Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of motorsfurnished by Lennox are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the servicefactor limitations outlined on the motor nameplate.Rated in accordance with ARI Standard 340/360 and certified to ARI; 95�F (35�C) outdoor air temperature and 80�F (27�C) db/67�F (19�C) wb entering evaporator air; minimumexternal duct static pressure. Integrated Part Load Value tested at 80�F (27�C) outdoor air temperature.NOTE � ARI capacity is net and includes evaporator blower motor heat deduction. Gross capacity does not include evaporator blower motor heat deduction.
L Series 156H−180−210−240−300S/ Page 13 �
SPECIFICATIONS − LCA/LGA240 AND 300S
Model No. LCA/LGA240S LCA/LGA240H �LCA/LGA300S
Efficiency Type Standard (S) High (H) Standard (S)
�Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of motorsfurnished by Lennox are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the servicefactor limitations outlined on the motor nameplate.Rated in accordance with ARI Standard 340/360 and certified to ARI; 95�F (35�C) outdoor air temperature and 80�F (27�C) db/67�F (19�C) wb entering evaporator air; minimumexternal duct static pressure. Integrated Part Load Value tested at 80�F (27�C) outdoor air temperature.�Tested at conditions included in ARI Standard 340/360.NOTE � ARI capacity is net and includes evaporator blower motor heat deduction. Gross capacity does not include evaporator blower motor heat deduction.
L Series 156H−180−210−240−300S/ Page 14 �
SPECIFICATIONS − LHA180 AND 240Model No. LHA180H LHA240H
Rated in accordance with ARI Standard 340/360 and certified to ARI. Integrated Part Load Value tested at 80�F (27�C) outdoor air temperature.Cooling Ratings� 95�F (35�C) outdoor air temperature and 80�F (27�C) db/67�F (19�C) wb entering indoor coil air.High Temperature Heating Ratings� 47�F (8�C) db/43�F (6�C) wb outdoor air temperature and 70�F (21�C) entering indoor coil air.Low Temperature Heating Ratings� 17�F (�8�C) db/15�F (�9�C) wb outdoor air temperature and 70�F (21�C) entering indoor coil air.
NOTE � ARI capacity is net and includes indoor blower motor heat deduction. Gross capacity does not include indoor blower motor heat deduction.�Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of motorsfurnished by Lennox are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the servicefactor limitations outlined on the motor nameplate.
L Series 156H−180−210−240−300S/ Page 15 �
WEIGHT DATA
Model No DescriptionWeight
Model No. Descriptionlbs. kg
Net Weights
LCA180S Net weight (Base unit) 2200 1000
LCA210S Net weight (Base unit) 2285 1035
LCA240S Net weight (Base unit) 2415 1095
LCA156H Net weight (Base unit) 2300 1045
LCA180H Net weight (Base unit) 2300 1045
LCA210H Net weight (Base unit) 2430 1100
LCA240H & 300S Net weight (Base unit) 2480 1125
LGA180S Net weight (Base unit with low fire heat exchanger) 2255 1025
LGA210S Net weight (Base unit with low fire heat exchanger) 2340 1060
LGA240S Net weight (Base unit with low fire heat exchanger) 2470 1120
LGA156H Net weight (Base unit with low fire heat exchanger) 2355 1070
LGA180H Net weight (Base unit with low fire heat exchanger) 2355 1070
LGA210H Net weight (Base unit with low fire heat exchanger) 2485 1125
LGA240H & 300S Net weight (Base unit with low fire heat exchanger) 2535 1150
LHA180H Net weight (Base unit) 2355 1070
LHA240H Net weight (Base unit) 2400 1090
Shipping Weights (Add Factory Installed Options Weights To Base Unit Weights For Total Shipping Weight)
LCA180S Base unit 2400 1089
LCA210S Base unit 2485 1127
LCA240S Base unit 2615 1186
LCA156H Base unit 2500 1135
LCA180H Base unit 2500 1135
LCA210H Base unit 2620 1188
LCA240H & 300S Base unit 2680 1216
LHA180H Base unit 2570 1166
LHA240H Base unit 2615 1186
LCA/LHAModels Only
Electric Heat (add to Base unit) See Electric Heat Rating Tables
LGA180S Base unit with low fire heat exchanger 2455 1114
LGA210S Base unit with low fire heat exchanger 2540 1152
LGA240S Base unit with low fire heat exchanger 2670 1211
LGA156H Base unit with low fire heat exchanger 2555 1159
LGA180H Base unit with low fire heat exchanger 2555 1159
LGA210H Base unit with low fire heat exchanger 2685 1218
LGA240H & 300S Base unit with low fire heat exchanger 2735 1241
LGAModels Only
High Fire Heat Exchanger (add to Base unit) 30 14
Economizer (add to Base unit) 73 33
All ModelsOutdoor Air Damper (add to Base unit) 45 20
All ModelsPower Exhaust (add to Base unit) 62 19
LTL Packaging (less than truck load) (add to Base unit) 280 127
MODEL NUMBER IDENTIFICATION
Minor Revision Number
LGA Y
Unit TypeL = Commercial Package Unit
Unit TypeG = Cooling w/ Gas HeatC = Cooling Only (w/ opt. Electric Heat)H = Heat Pump
Service Outlet (2) 115 volt GFCI (amp rating) 15 15 15
Refer�to�National or Canadian�Electrical�Code�manual�to�determine�wire,�fuse�and�disconnect�size�requirements.NOTE���Extremes�of�operating�range�are�plus�and�minus�10%�of�line�voltage.NOTE � Where current does not exceed 100 amps, HACR type circuit breaker may be used in place of fuse (U.S. only).
Refer�to�National or Canadian�Electrical�Code�manual�to�determine�wire,�fuse�and�disconnect�size�requirements.NOTE���Extremes�of�operating�range�are�plus�and�minus�10%�of�line�voltage.NOTE � Where current does not exceed 100 amps, HACR type circuit breaker may be used in place of fuse (U.S. only).
Refer�to�National or Canadian�Electrical�Code�manual�to�determine�wire,�fuse�and�disconnect�size�requirements.NOTE���Extremes�of�operating�range�are�plus�and�minus�10%�of�line�voltage.NOTE � Where current does not exceed 100 amps, HACR type circuit breaker may be used in place of fuse (U.S. only).
Refer�to�National or Canadian�Electrical�Code�manual�to�determine�wire,�fuse�and�disconnect�size�requirements.NOTE���Extremes�of�operating�range�are�plus�and�minus�10%�of�line�voltage.NOTE � Where current does not exceed 100 amps, HACR type circuit breaker may be used in place of fuse (U.S. only).
Refer�to�National or Canadian�Electrical�Code�manual�to�determine�wire,�fuse�and�disconnect�size�requirements.NOTE���Extremes�of�operating�range�are�plus�and�minus�10%�of�line�voltage.NOTE � Where current does not exceed 100 amps, HACR type circuit breaker may be used in place of fuse (U.S. only).
Service Outlet (2) 115 volt GFCI (amp rating) 15 15 15 15 15 15
Refer�to�National or Canadian�Electrical�Code�manual�to�determine�wire,�fuse�and�disconnect�size�requirements.NOTE���Extremes�of�operating�range�are�plus�and�minus�10�%�of�line�voltage.NOTE � Where current does not exceed 100 amps, HACR type circuit breaker may be used in place of fuse (U.S. only).
L Series 156H−180−210−240−300S/ Page 19 �
OPTIONAL ELECTRIC HEAT ACCESSORIES (LCA/LHA MODELS)
ELECTRIC HEAT CONTROL MODULE AND UNIT FUSE BLOCKS
Unit Model No. LCA156H LCA180S LCA180H LCA210S LCA210H LCA240S LCA240H LCA300S LHA180H LHA240H
Model No. EHA (see Electric Heat Data tables for additional information)
15 X X X X X X X X X X
Electric 30 X X X X X X X X X XElectricHeat kW Input Range 45 X X X X X X X X X XkW Input Range
60 X X X X X X X X X X
90 − − − − − − − − − − − − X X X X X − − − − X
Electric Heat Control Module (45/60/90 kW) 15K13 (208/230v), 15K92 (460v), 15K93 (575v)
LTB2 ELECTRIC HEAT TERMINAL BLOCKLTB2−175 (30K75) 175 amps, LTB2−335 (30K76) 335 amps(Required For Units Without Disconnect/Circuit Breaker But With Single Point Power Source)
Unit Model No. LCA156H LCA180S LCA180H LCA210S LCA210H LCA240S LCA240H LCA300S LHA180H LHA240H
2 hp (1.5 kW) − − − −
15 kW*208/230v
3 hp (2.2 kW) 30K75 − − − −*208/230v
3ph 5 hp (3.7 kW)
30K75
30K7530K75
30K753ph7.5 hp (5.6 kW) − − − −
30K75
2 hp (1.5 kW) − − − −
30 kW*208/230v
3 hp (2.2 kW) 30K75 − − − −30K75*208/230v
3ph 5 hp (3.7 kW) 30K7530K75
30K7530K76
LTB2
3ph
7.5 hp (5.6 kW) − − − −30K75
30K76LTB2
TerminalBl k
2 hp (1.5 kW) − − − −TerminalBlock
(3 phase)45 kW
*208/230v3 hp (2.2 kW) 30K75 − − − −
(3 phase) *208/230v3ph 5 hp (3.7 kW) 30K75 30K75 30K763ph
7.5 hp (5.6 kW) − − − − 30K76
2 hp (1.5 kW) − − − −
60 kW*208/230v
3 hp (2.2 kW) 30K7530K75
− − − −*208/230v
3ph 5 hp (3.7 kW)30K75
30K7630K763ph
7.5 hp (5.6 kW) − − − − 30K7630K76
30K76
90 kW3 hp (2.2 kW)
30K76− − − −
30K76
90 kW*208/230v
3ph5 hp (3.7 kW) − − − −
30K76
30K76− − − −
3ph7.5 hp (5.6 kW)
30K76
NOTE � Terminal Block is factory installed in units with factory installed electric heat without disconnect/circuit breaker but with single pointpower source.
*NOTE �ALL 460V AND 575V UNIT VOLTAGES USE LTB2�175 (30K75) TERMINAL BLOCK.
L Series 156H−180−210−240−300S/ Page 20 �
OPTIONAL ELECTRIC HEAT DATA (LCA MODELS)(Requires Unit Fuse Block, Terminal Block and �Heater Control Module)
�NOTE − For field installed electric heat, order (1) of each heater shown to make up heater size required.�NOTE − For field installed electric heat, order (2) of same heater shown to make up heater size required.Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F (75°C).�May be used with two stage control.NOTE � Fuse block must be ordered extra. Factory installed heaters will have the fuse block factory installed. Fuse block must be installed in field installed heaters. Also requiresLTB2 Terminal Block. See Optional Electric Heat Accessories tables.�Electric Heat Control Module required on 45, 60 & 90 kW sizes only (module furnished with factory installed electric heaters). See Optional Electric Heat Accessories tables.
L Series 156H−180−210−240−300S/ Page 21 �
OPTIONAL ELECTRIC HEAT DATA (LCA MODELS)(Requires Unit Fuse Block, Terminal Block and �Heater Control Module)
�NOTE − For field installed electric heat, order (1) of each heater shown to make up heater size required.�NOTE − For field installed electric heat, order (2) of same heater shown to make up heater size required.Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F (75°C).�May be used with two stage control.NOTE � Fuse block must be ordered extra. Factory installed heaters will have the fuse block factory installed. Fuse block must be installed in field installed heaters. Also requiresLTB2 Terminal Block. See Optional Electric Heat Accessories tables.�Electric Heat Control Module required on 45, 60 & 90 kW sizes only (module furnished with factory installed electric heaters). See Optional Electric Heat Accessories tables.
L Series 156H−180−210−240−300S/ Page 22 �
OPTIONAL ELECTRIC HEAT DATA (LCA MODELS)(Requires Unit Fuse Block, Terminal Block and �Heater Control Module)
�NOTE − For field installed electric heat, order (1) of each heater shown to make up heater size required.�NOTE − For field installed electric heat, order (2) of same heater shown to make up heater size required.Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F (75°C).�May be used with two stage control.NOTE � Fuse block must be ordered extra. Factory installed heaters will have the fuse block factory installed. Fuse block must be installed in field installed heaters. Also requiresLTB2 Terminal Block. See Optional Electric Heat Accessories tables.�Electric Heat Control Module required on 45, 60 & 90 kW sizes only (module furnished with factory installed electric heaters). See Optional Electric Heat Accessories tables.
L Series 156H−180−210−240−300S/ Page 23 �
OPTIONAL ELECTRIC HEAT DATA (LHA MODELS)(Requires Unit Fuse Block, Terminal Block and �Heater Control Module)
�NOTE − For field installed electric heat, order (1) of each heater shown to make up heater size required.�NOTE − For field installed electric heat, order (2) of same heater shown to make up heater size required.Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Use wires suitable for at least 167°F (75°C).�May be used with two stage control.NOTE � Fuse block must be ordered extra. Factory installed heaters will have the fuse block factory installed. Fuse block must be installed in field installed heaters. Also requiresLTB2 Terminal Block. See Optional Electric Heat Accessories tables.�Electric Heat Control Module required on 45, 60 & 90 kW sizes only (module furnished with factory installed electric heaters). See Optional Electric Heat Accessories tables.
L Series 156H−180−210−240−300S/ Page 24 �
COOLING RATINGS − LCA/LGA MODELS
NOTE − For Temperatures and Capacities not shown in tables, see bulletin � Cooling Unit Rating Table Correction Factor Data in Miscellaneous Engineering Data section.
LCA/LGA156H − HIGH EFFICIENCY − COOLING CAPACITY − TWO COMPRESSORS OPERATINGOutdoor Air Temperature Entering Outdoor Coil
Total 65�F (18�C) 75�F (24�C) 85�F (29�C) 95�F (35�C)
NOTE − For Temperatures and Capacities not shown in tables, see bulletin � Cooling Unit Rating Table Correction Factor Data in Miscellaneous Engineering Data section.
LCA/LGA180H − HIGH EFFICIENCY − COOLING CAPACITY − TWO COMPRESSORS OPERATINGOutdoor Air Temperature Entering Outdoor Coil
Total 65�F (18�C) 75�F (24�C) 85�F (29�C) 95�F (35�C)
NOTE − For Temperatures and Capacities not shown in tables, see bulletin � Cooling Unit Rating Table Correction Factor Data in Miscellaneous Engineering Data section.
LCA/LGA210H − HIGH EFFICIENCY − COOLING CAPACITY − TWO COMPRESSORS OPERATINGOutdoor Air Temperature Entering Outdoor Coil
Total 65�F (18�C) 75�F (24�C) 85�F (29�C) 95�F (35�C)
NOTE − For Temperatures and Capacities not shown in tables, see bulletin � Cooling Unit Rating Table Correction Factor Data in Miscellaneous Engineering Data section.
LCA/LGA240H − HIGH EFFICIENCY − COOLING CAPACITY − TWO COMPRESSORS OPERATINGOutdoor Air Temperature Entering Outdoor Coil
Total 65�F (18�C) 75�F (24�C) 85�F (29�C) 95�F (35�C)
NOTE − For Temperatures and Capacities not shown in tables, see bulletin � Cooling Unit Rating Table Correction Factor Data in Miscellaneous Engineering Data section.
LHA180H − HIGH EFFICIENCY − COOLING CAPACITY − ONE COMPRESSOR OPERATINGOutdoor Air Temperature Entering Outdoor Coil
Total 65�F (18�C) 75�F (24�C) 85�F (29�C) 95�F (35�C)
NOTE − For Temperatures and Capacities not shown in tables, see bulletin � Cooling Unit Rating Table Correction Factor Data in Miscellaneous Engineering Data section.
LHA240H − HIGH EFFICIENCY − COOLING CAPACITY − ONE COMPRESSOR OPERATINGOutdoor Air Temperature Entering Outdoor Coil
Total 65�F (18�C) 75�F (24�C) 85�F (29�C) 95�F (35�C)
BELT BLOWER DATA SUPPLEMENT (L SERIES 156H − 300S) − SEPTEMBER 1999
BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL & AIR FILTERS IN PLACE.FOR ALL UNITS ADD:
1 − Wet indoor coil air resistance of selected unit.2 − Any factory installed options air resistance (heat section, economizer, etc.)3 − Any field installed accessories air resistance (duct resistance, diffuser, etc.)
Then determine from blower table blower motor output and drive required.See Pages 32−33 for wet coil and option/accessory air resistance data.MINIMUM AIR VOLUME REQUIRED FOR USE WITH OPTIONAL ELECTRIC HEAT −LCA156H units require 5200 cfm (2455 L/s) minimum air with electric heat. −All other LCA units require 6000 cfm (2830 L/s) minimum air with electric heat. −LHA units with 15, 22.5, 30 or 45 kW electric heat require 6400 cfm (3020 L/s) minimum air. −LHA units with 60 or 90 kW electric heat require 7000 cfm (3305 L/s) minimum air.
Air TOTAL STATIC PRESSURE � Inches Water Gauge (Pa)AirVolume
*Using total air volume and system static pressure requirements determine from blower performance tables rpm and motor output required. Maximum usable output of motorsfurnished by Lennox are shown. In Canada, nominal motor output is also maximum usable motor output. If motors of comparable output are used, be sure to keep within the servicefactor limitations outlined on the motor nameplate.
FACTORY INSTALLED OPTIONS/FIELD INSTALLED ACCESSORY AIR RESISTANCE
*Throw is the horizontal or vertical distance an airstream travels on leaving theoutlet�or diffuser before the maximum velocity is reduced to 50 ft. (15 m) perminute. Four sides open.
L Series 156H−180−210−240−300S/ Page 33 �
GUIDE SPECIFICATIONS � ALL MODELSPrepared for the guidance of architects, consulting engineers andmechanical contractors.General � Furnish and install a single package air to air DX mechanicalcooling system, cooling and gas fired heating system or heat pump sys�tem, complete with automatic controls. The single package unit shall bea standard product of a firm regularly engaged in the manufacture of heat�ing�cooling equipment. The manufacturer shall have parts and serviceavailable throughout the U.S. and Canada.The installed weight shall not be more than lbs. (kg). Entire unit shallhave a width of not more than inches (mm), a depth of not more than inches (mm) and an overall height of not more than inches(mm). The equipment shall be shipped completely factory assembled, pre�charged, piped and wired internally ready for field connections. In addition,manufacturer shall test operate system at the factory before shipment.Air Distribution � Equipment shall be capable of bottom (down�flow) orside (horizontal) handling of conditioned air. Horizontal air shall require op�tional horizontal conversion kit. All air distribution ducts shall be fiberglassor ga. galvanized steel insulated with inch (mm) thick lb./ft.3 (kg/m3) density fiberglass or equivalent.Approvals � All electrical components shall have E.T.L. and C.G.A. List�ing. All wiring shall be in compliance with NEC and CEC.Equipment Warranty � Heat Exchangers shall have a limited warrantyfor a full ten years (LGA Models). Compressors have a limited warranty fora full five years. All other components have a limited warranty for one year.Refer to the Lennox Equipment Limited Warranty certificate included withthe unit for details.Cooling System � The total certified cooling capacity shall not be lessthan Btuh (kW) with an indoor coil air volume of cfm(L/s), an entering wet bulb air temperature of ³F (³C), an enteringdry bulb air temperature of ³F (³C) and an outdoor coil enteringtemperature of ³F (³C). The compressor power input shall notexceed kW at these conditions.The coils shall be non�ferrous construction with aluminum fins mechani�cally bonded to durable copper tubes. Coils shall be pressure leak tested.Coil face area shall be not less than sq. ft. (m2) (indoor coil) and sq. ft. (m2) (outdoor coil). Outdoor coils shall be slab coil construc�tion (LCA/LGA models) and formed coil construction (LHA models).Compressors shall be resiliently mounted, have overload protection andcrankcase heaters. The refrigeration system shall have discharge suctionand liquid line gauge ports, high pressure switches, low pressure switches,driers, freezestat, defrost control (LHA), check and expansion valves(LHA), reversing valves (LHA), accumulators (LHA) and full refrigerantcharge. Optional service valves shall be available (LCA/LGA only). Allmodels shall have low ambient operation down to 0³F (−17.7³C). All mod�els shall be rated in accordance with ARI Standards 340/360−93.Heating System (LGA Models) � The heating capacity output shall be Btuh (kW) with a gas input of Btuh (kW).Tubular heat exchanger and inshot type gas burners shall be constructedof aluminized steel. Controls shall consist of direct spark ignition, electron�ic flame sensor controls, flame rollout switch, limit controls and automaticredundant dual gas valve with staging control and combustion air provingswitch on induced draft blower. Unit shall be available for use with LPG/propane as an option. Heat exchanger shall be removable for servicing.Complete service access shall be provided for controls and wiring. Shallbe E.T.L./C.G.A. design certified for outdoor installation. Optional stainlesssteel heat exchanger shall be available for applications where mixed airtemperature is between 30 and 45³F (−1 and 7³C).Heating System (LHA Models) � The total certified heating capacity shallnot be less than Btuh (kW) with an indoor coil air volume of cfm (L/s), an entering dry bulb temperature of ³F (³C)and an outdoor coil entering air temperature of ³F (³C). The totalcompressor power input shall not exceed kW at the above conditions.Cabinet � Shall be galvanized steel with a powdered enamel paint finishelectrostatically bonded to the metal. Cabinet panels where conditioned airis handled shall be fully insulated to prevent sweating and minimize sound.Openings shall be provided for power connection entry. Indoor coil conden�sate drain extended outside cabinet shall be provided. Lifting holes shall beprovided for rigging. Bottom power and gas (LGA) entry shall be furnished.Service Access � Cabinet panels shall be hinged with tool�less access forcompressor/heating/controls, blower and air filter/economizer compartments.Supply Air Blower � Centrifugal supply air blower shall have ball bear�ings and adjustable belt drive. Blower assembly shall slide out of unit forservicing. Motor mount base shall permit ease of motor changeover andbelt tension adjustment. Blower wheel shall be statically and dynamicallybalanced. Blower shall be capable of delivering cfm (L/s) at anexternal static pressure of inches water gauge (Pa) requiring bhp (W) and rpm.Integrated Modular Control (IMC) � Solid state control board shall beprovided to operate unit. Built−in functions shall include: blower on/offdelay, built−in control parameter defaults, service relay output, dirty filterswitch input, dehumidistat input, economizer control, electric heat staging,ETM compatible, unit diagnosis, diagnostics code storage, gas valvedelay between stages, indoor air quality input, low ambient controls, mini�mum run time, night setback mode, smoke alarm mode, low pressure con�trol, thermostat bounce delay, three digit display, ³F or ³C display, 2 stageheat/3 stage cool thermostat compatible and warm up mode.Outdoor Coil Fans � Direct drive propeller type outdoor coil fans shalldischarge vertically and be direct driven by a hp (W) motor. Fanmotor shall have ball bearings and be permanently lubricated and inher�ently protected. Fans shall have a safety guard.Air Filters � Disposable 2 inch (51 mm) thick pleated filters furnishedshall have not less than sq. ft. (m2) of free area.
OPTIONAL ACCESSORIESAdditive Electric Heaters (LCA/LHA Models) � The certified total heat�ing capacity output shall be Btuh with kW input at volts power supply.Electric heaters shall be available for factory or field installation. Heating ele�ments shall be nichrome bare wire exposed directly to the air stream. Time de�lays shall bring the elements on and off in sequence with a time delay betweeneach element. Limit controls shall provide overload and short circuit protection.Blower Proving Switch � Furnish and factory install air pressure switchto monitor blower operation.Ceiling Diffusers � Furnish and install a (flush or stepdown) optionalcombination ceiling supply and return air diffuser. It shall be capable of notless than ft. (m) radius of effective throw. Supply and return transi�tions shall be available, for field installation in the roof mounting frame, toprovide duct connection to the diffuser.Coil Guards � Furnish and install galvanized steel coil guards.Control Systems � Shall provide a selection of control systems to auto�matically operate the mechanical equipment through the heating or cool�ing and ventilating cycles as required.Corrosion Protection � Furnish and factory apply phenolic epoxy coatingto either or both of the following: Outdoor coils with painted outdoor base sec�tion. Indoor coil with painted indoor base section and painted blower housings.Dehumidistat � Furnish and install dehumidistat, relays information toIntegrated Modular Control.Dirty Filter Switch � Furnish and install pressure switch that indicatesdirty filter, relays information to Integrated Modular Control.Disconnect � Furnish and factory install unit disconnect switch.Economizer Section � Furnish and install economizer complete with recir�culated air dampers, outside air dampers and controls. Low leakage dampersshall ride in nylon bearings. The economizer section shall provide for theintroduction of outdoor air for minimum ventilation and free cooling. Integratedeconomizer control shall allow compressors to cycle for additional cooling, asneeded. Damper actuator shall be opposing gear driven, 24 volt, fully modu�lating design. Plug�in control board (on unit IMC board) shall consist of adjust�able minimum positioner, enthalpy setpoint and DIP switches for setting typeof control logic used. Economizer control options shall consist of sensibletemperature, global, outdoor enthalpy and differential enthalpy (outdoor andreturn air). Optional outdoor air hood (required) with filters shall be galvanizedsteel with a powdered enamel paint finish electrostatically bonded to the met�al. Economizer shall be available for factory or field installation.Gravity Exhaust Dampers � Pressure operated dampers shall be avail�able for factory or field installation. Extruded aluminum dampers shall pre�vent blow�back and outdoor air infiltration during off cycle. Optional hoodshall be available.Grille Guards � Furnish and install heavy gauge guards, shall protect thespace between the outdoor coils and the main unit.Hail Guards � Furnish and install heavy gauge, painted steel hail guards.High Efficiency Blower Motor � Furnish and factory install high efficiencyblower motor.Horizontal Conversion Kit � Shall be available for all models to provideduct covers to block off unit down−flow supply air opening, horizontal re�turn air opening panel (on unit) is moved to block off down−flow return airopening for horizontal applications.Horizontal Gravity Exhaust Dampers � Pressure operated dampersshall be available for field installation in the return air duct. Extruded alumi�num dampers shall prevent blow�back and outdoor air infiltration during offcycle.Indoor Air Quality Sensor � Furnish and field install sensor to monitorCO2 levels, relays information to Integrated Module Control which adjustseconomizer dampers proportionately to the pollutant level.Outdoor Air Damper Section � Optional outdoor dampers shall be avail�able to provide outdoor air requirements of up to 25%. Models shall beavailable for manual or automatic operation. Dampers shall be opposinggear driven design. Motorized damper section shall install internal to theunit. Optional outdoor air hood (required) with filters shall be galvanizedsteel with a powdered enamel paint finish electrostatically bonded to themetal. Dampers shall be available for factory or field installation.Power Exhaust Fan � Shall be available for all models with economizer(down�flow applications only). Direct drive propeller type fan shall exhaustair through optional gravity exhaust damper (required). Motor shall beoverload protected. Fan shall be factory or field installed between econo�mizer and gravity exhaust dampers.Roof Mounting Frame � Furnish and install a steel roof mounting framefor bottom discharge and return air duct connection. It shall mate to the bot�tom perimeter of the equipment. When flashed into the roof it shall makea unit mounting curb and provide weatherproof duct connection and entryinto the conditioned area. Height of frame shall be inches (mm).Flashing shall be the responsibility of the roofing contractor. Frame shallbe approved by U.S. National Roofing Contractors Association.Service Outlets � Furnish and factory install dual 115 volt, 15 amp GFCItype service outlets. Wiring shall be field provided.Service Valves (LCA/LGA) � Furnish and factory install fully serviceablebrass service valves in discharge and liquid lines. Shall allow refrigerantpump down to high side of system for servicing of low side.Smoke Detectors � Furnish and factory install photoelectric type smokedetector in either or both return air section and supply air section.Terminal Block (LCA/LHA Models) � Shall be required for units withoutdisconnect switch but with single point power supply and electric heat.Unit Fuse Block (LCA/LHA Models) � Shall be required for units withsingle point power supply and electric heat.
L Series 156H−180−210−240−300S/ Page 34 �
DIMENSIONS − INCHES (MM) − LCA MODELSShown With Optional Economizer Dampers, Power Exhaust Fans, Convenience Outlet, Unit DisconnectCORNER WEIGHTS − lbs. (kg)
Model AA BB CC DDModelNumber lbs. kg lbs. kg lbs. kg lbs. kg
LCA156H/180 Base Unit 450 204 460 209 620 281 600 272
Base Unit � The standard unit with NO OPTIONS.Max. Unit � The standard unit with ALL OPTIONS Installed. (Economizer, Power Ex�haust Fans, High Input Heating, Controls)
CENTER OF GRAVITY − inches (mm)
Model EE FFModelNumber inch mm inch mm
LGA156H/180 Base Unit 50 1270 38−1/2 978
LGA156H/180 Max. Unit 54 1372 41�1/2 1054
LGA210 Base Unit 52�1/2 1334 37 940
LGA210 Max. Unit 52�1/2 1334 41 1041
LGA240/300S Base Unit 54�1/2 1384 37�1/2 953
LGA240/300S Max. Unit 53 1346 40�1/2 1029
Base Unit � The standard unit with NO OPTIONS.Max. Unit � The standard unit with ALL OPTIONS Installed. (Economizer, Power Ex�haust Fans, High Input Heating, Controls)
BOTTOM POWER ENTRY5 X 8 inches (127 X 203 mm)
BOTTOM SUPPLYAIR OPENINGS
COIL
OVERHANG
BOTTOM RETURNAIR OPENING
4�1/4(108)
4�1/2(114) 28
(711)28
(711)
4 (102)
4(102)
12�3/8(314)
12�3/8(314) 20 (508) 20 (508)
15 (381)
18 (457)
60�1/2 (1537)
AA BB
CCDD
CENTER OFGRAVITY
EE
FF
TOP VIEW BASE SECTION
*OPTIONALGRAVITYEXHAUSTDAMPERS(Factory or
Field Installed)
OPTIONAL POWEREXHAUST FANS
(Factory or Field Installed)Down�flow Applications Only
*OPTIONAL EX�HAUST HOOD(Field Installed)
EXHAUSTAIR HEAT
EXCHANGER (2)
BLOWERS (2)
COMPRESSORS (4)(3 Compressors on LGA156H/180)EVAPORATOR COIL
CONDENSERCOIL INTAKE
AIR
CONDENSERCOILS
BOTTOMPOWER/GAS ENTRY
FILTERS
CONDENSERCOIL INTAKE
AIR
COMPRESSORS
CONTROLBOX
CONDENSERCOIL
EXHAUSTAIR
CONDENSERFANS ANDGUARDS (4)
BLOWER
EVAPORATOR COIL
FILTERS
BLOWER
FRONT VIEW
TOP VIEW
SIDE VIEW
FORKLIFT SLOTS(Front and Left Side Only)
OUTDOORAIR
90�1/8(2289)
31�1/2(800)
132�5/8(3369)
LIFTING HOLES(For Rigging
Front and Back)
OPTIONAL ECONOMIZER DAMPERS(Factory or Field Installed)
16(406)
CONDENSATE DRAIN
5�3/8(137)
CONDENSER
COIL IN
TAKE
AIR
OPTIONAL OUTDOOR AIR HOOD(Factory or Field Installed)
Required with Economizer orOutdoor Air Damper
OPTIONALECONOMIZER DAMPERS(Factory or Field Installed)
OPTIONAL DISCONNECT(Factory Installed)
OPTIONAL OUTDOOR AIR HOOD(Factory or Field Installed)
OPTIONAL115 VOLT OUTLET(Factory Installed
Inside Unit)
FLUEOUTLET3/8
(10)
3�1/4(83)
54�1/4(1378)
51(1295)
GASKNOCKOUT(For BottomGas Supply
Only)
GAS SUPPLY
5�7/8(149)
19�3/8(492)
1�1/2(38)
90�7/8(2308)
107�5/8(2734)
SIDE ELECTRICALKNOCKOUTS
25�7/8(657)
BACK VIEW(Horizontal Supply and Return Air Opening)
HORIZONTALSUPPLY AIROPENING
HORIZONTAL ROOF MOUNTING FRAME(Required For Horizontal Applications)
� & � 8�1/4 (210)� & � 13�1/4 (337)
75 (1905)
HORIZONTAL RETURNAIR OPENING
12�3/8(314)
15 (381)60�1/2 (1537)
2 (51)
54�1/4(1378)
NOTE � Top of Mounting Frameextends 4 inch (102 mm) insidebottom of unit base. See Typicalflashing detail.
OPTIONAL RETURN AIR PANEL KIT(Required For
Horizontal Applications)
� & � 6�1/2 (165)� & � 17�1/2 (445)
� 22 (559)� 33 (838)� 26 (660)� 37 (940)
16(406)
OPTIONALOUTDOOR AIR HOOD
(Factory or FieldInstalled)
OPTIONAL OUTDOORAIR DAMPERS
(Manual or Automatic) (Factory or Field Installed)
� LARMFH18/24�26 � LARMFH18/24�37 �LARMFH30/36�30 (used with 300S Models Only) � LARMFH30/36�40 (used with 300S Models Only)
102�1/8 (2594)
SIDE VIEW
TOP VIEW
Frame
Opening
Frame
Opening
54(1372)
98�1/2(2502)
82�5/8(2099)
86�5/8 (2200)
98�1/2(2502)
FRONT VIEW
NAILER STRIP(Furnished)
102�1/2 (2604)
FRAME SUPPLYAIR OPENING
With 1�1/2 in. (38 mm) FLANGE
75(1905)
5�1/2 (140)
SUPPLYDUCT
PANELS(Furnished)
SUPPLY AIRTURNINGVANE
(Furnished)
1 (25)
2 (51)SECTION A�A
1�13/16 (46)
NAILER STRIP(Furnished)
AA
102�1/8 (2594)86�1/4(2191)
NOTE � Roof deck may beomitted within confines of frame.
SUPPLY AIRTURNINGVANE
(Furnished)
PANEL TO COVER RETURN AIROPENING IN BOTTOM OF UNIT
(Furnished With Optional HorizontalReturn Air Panel Kit)
SIDE VIEW(PACKAGED UNIT)
86�1/8(2188)
1�13/16 (46)
1�13/16 (46)1�13/16 (46)1�13/16 (46)
NOTE − LARMFH18/24�26 and LARMFH30/36�31are designed for horizontal dischargewhen unit is mounted on a slab.LARMFH18/24�37 and LARMFH30/36�41are designed for horizontal dischargewhen unit is mounted on a rooftop.
� & � 8�1/4 (210)� & � 13�1/4 (337)
� & � 6�1/2 (165)� & � 17�1/2 (445)
� 26 (660)� 37 (940)� 30 (762)� 41 (1041)
� & � 14 (356)� & � 18 (457)
� 26 (660)� 37 (940)� 30 (762)� 41 (1041)
L Series 156H−180−210−240−300S/ Page 39 �
ACCESSORY DIMENSIONS − INCHES (MM)COMBINATION CEILING SUPPLY AND RETURN DIFFUSERS
2 (51)2 (51)
AB
C
D
E
F G
A
B
C
D
E
RTD11�185 & RTD11�275STEP�DOWN CEILING DIFFUSER
FD11�185 & FD11�275FLUSH CEILING DIFFUSER
HH
J
K
FF
G
H
Model A B C D EModelNumber in. mm in. mm in. mm in. mm in. mm