Lennox LCH Series Manuals

Page 1 INSTALLATION INSTRUCTIONS FOR OUTDOOR AIR DAMPERS USED WITH KG/KC/KH/LGH/LCH/ZG/ZC/ZH 024-090 UNITS 506882-02 4/2017 Supersedes 11/2016 ©2017 OUTDOOR AIR DAMPERS OUTDOOR AIR DAMPERS Note - Disregard shipping and packing list and installation sections when dampers are factory-installed. Shipping and Packing List Package 1 of 1 contains: 1- Outdoor air damper (OAD) assembly 1- Hood pivot bracket (15D17, 15D19) 1- Bag assembly containing (15D17, 15D19): 1-P160/J160 jumper harness 1-J39/P39 harness (15D19) #10 self-drilling screws (15D19) 2-Wiring diagrams (15D17) 3-Wiring diagrams (15D19) 1- Outdoor air hood carton containing: 1-Hood top (15D18, 15D20) 2-Hood sides (left and right) 1-Hood front filter bracket 1-Filter 1-Bottom filter bracket (15D17, 15D19) 1-Bag assembly containing: #10 sheet metal screws 1-#10 - 32 X 1/2” screw (15D17, 15D19) Foam tape (15D18, 15D20) Check parts for shipping damage. Receiving party should contact last carrier immediately if shipping damage is found. WARNING Improper installation, adjustment, alteration, ser­ vice or maintenance can cause property damage, personal injury or loss of life. Installation and ser­ vice must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier Application Optional outdoor air dampers provide fresh outdoor air. See table 1 for usage. C1DAMP21A-1 and Z1DAMP21A-2 Motorized Dampers: Electro-mechanical units (KC/KG/KH/ZC/ZG/ZH) - The damper opens to a set position when the blower is operating. To operate the damper only during the occupied time period, an optional thermostat or energy management system must be installed that provides an occupied signal to the unit's thermostat connection. Units equipped with an M3 A55 Unit Controller (LC/LG) - The damper opens to a set position when the blower is operating and an occupied signal is provided to the Unit Controller. C1DAMP11A-2 & Z1DAMP11A-2 Manual Dampers: Damper is manually operated; damper position is manually set at installation and remains in that position. TABLE 1 Unit Type LB # Cat. # LCH/LGH 036–072 KC/KG/KH 024-090 Motorized 613924-07 15D17 LCH/LGH 036–072 KC/KG/KH 024-090 Manual 613924-08 15D18 ZC/ZG/ZH 036-060 Motorized 613924-09 15D19 ZC/ZG/ZH 036-060 Manual 613924-10 15D20 CAUTION As with any mechanical equipment, contact with sharp sheet metal edges can result in personal in­ jury. Take care while handling this equipment and wear gloves and protective clothing.

©2019 WARNING Improper installation, adjustment, alteration, ser­ vice or maintenance can cause property damage, personal injury or loss of life. Installation and ser­ vice must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier Table Of Contents Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 Parts Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . Page 3 Shipping and Packing List . . . . . . . . . . . . . . . . . . . . Page 5 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5 Unit Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6 Duct Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6 Rigging Unit For Lifting . . . . . . . . . . . . . . . . . . . . . . . Page 7 Horizontal Air Discharge . . . . . . . . . . . . . . . . . . . . . . Page 7 Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7 Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9 Pressure Test Gas Piping Page 10 . . . . . . . . . . . . . . . . . . . . . INSTALLATION INSTRUCTIONS LGH/LCH036, 048, 060, 072 & 074 3, 4, 5 and 6 Ton GAS AND COOLING PACKAGED UNITS 507410-05 4/2019 Supersedes 10/2018 High Altitude Derate . . . . . . . . . . . . . . . . . . . . . . . . . Page 10 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . Page 11 Blower Operation and Adjustments . . . . . . . . . . . . Page 13 Cooling Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 46 Cooling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 57 Gas Heat Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 60 Heating Operation and Adjustments . . . . . . . . . . . . Page 61 Electric Heat Start-Up . . . . . . . . . . . . . . . . . . . . . . . . Page 62 Advanced Air Flow Control Start-Up . . . . . . . . . . . . Page 62 Hot Gas Reheat Startup . . . . . . . . . . . . . . . . . . . . . . Page 65 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 67 Factory Unit Controller Settings Page 70 . . . . . . . . . . . . . . . CAUTION As with any mechanical equipment, contact with sharp sheet metal edges can result in personal in­ jury. Take care while handling this equipment and wear gloves and protective clothing. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE LG STANDARD AND HIGH EFFICIENCY SHOWN

Page 1 Corp. 0925-L11 LCH SERIES Service Literature 3 to 6 ton 7 to 21 kW Revised 10-2018 LCH036 through 074 LCH036H, 048H, and 060H are high efficiency packaged units equipped with direct drive blowers. LCH036S, 048S and 060S are standard efficiency packaged units equipped with two speed belt drive blowers. LCH072H, 074H are high efficiency packaged units equipped with a single and two speed belt drive motors. Optional electric heat is factory or field installed . Electric heat operates in single stage depending on the kW input size. 7.5kW through 30 kW heat sections are available for the LCH unit. Information contained in this manual is intended for use by qualified service technicians only. All specifications are sub­ ject to change. Procedures outlined in this manual are pre­ sented as a recommendation only and do not supersede or replace local or state codes. If the unit must be lifted for service, rig unit by attaching four cables to the holes located in the unit base rail (two holes at each corner). Refer to the installation instructions for the proper rigging technique. WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, person­ al injury or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent) or service agency. IMPORTANT The Clean Air Act of 1990 bans the intentional vent­ ing of refrigerant (CFC's and HCFC's) as of July 1, 1992. Approved methods of recovery, recycling or re­ claiming must be followed. Fines and/or incarcera­ tion may be levied for non-compliance. WARNING Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at discon­ nect switch(es). Unit may have multiple power supplies. CAUTION Danger of sharp metallic edges. Can cause injury. Take care when servicing unit to avoid accidental contact with sharp edges. CAUTION Electrostatic discharge can affect elec­ tronic components. Take precautions to neutralize electrostatic charge by touching your hand and tools to metal prior to handling the control. Table of Contents Options Page 2 . . . . . . . . . . . . . . . . . . . . . . . Specifications Page 5 . . . . . . . . . . . . . . . . . . Blower Data Page 7 . . . . . . . . . . . . . . . . . . . Electrical /Electric Heat Data Page 19 . . . . . Electric Heat Capacities Page 26 . . . . . . . . Parts Arrangement Page 31 . . . . . . . . . . . . . I Unit Components Page 32 . . . . . . . . . . . . . II Placement and Installation Page 43 . . . . . III Start Up Operation Page 43 . . . . . . . . . . . IV Charging Page 43 . . . . . . . . . . . . . . . . . . . V System Service Checks Page 53 . . . . . . . VI Maintenance Page 53 . . . . . . . . . . . . . . . . VII Accessories Page 54 . . . . . . . . . . . . . . . . VIII Diagrams Page 63 . . . . . . . . . . . . . . . . . .