INSTALLATION Litho U.S.A. 2003 INSTRUCTIONS LGC090S, LCC090S (7.5 Ton) WARNING LGA090H, LCA090H (7.5 Ton) Improper installation, adjustment, alteration, ser (8.5 Ton) vice or maintenance can cause property damage, LGA102H, LCA102H personal injury or loss of life. Installation and ser vice must be performed by a qualified installer, serĆ LGC102S, LCC102S (8.5 Ton) vice agency or the gas supplier LGA120H, LCA120H (10 Ton) Table Of Contents LGC120S, LCC120S (10 Ton) Dimensions. 1 LGC150S, LCC150S (12.5 Ton) Parts Arrangements. 2 L SERIES PACKAGED UNITS Shipping and Packing List. 3 504,785M General. 3 6/2003 Supersedes 504,563M Requirements. 3 Unit Support. 3 Electrical Connections. 7 Duct Connections. 4 Blower Operation and Adjustments. 9 Rigging Unit For Lifting. 4 Cooling Start−Up. 13 Condensate Drains. 4 Gas Heat Start−Up. 17 Gas Piping. 5 Heating Operation and Adjustments. 18 Pressure Test Gas Piping. 5 Electric Heat Start−Up. 19 High Altitude Derate. 6 Humiditrol® Start−Up and Operation. 20 Factory−Installed Options. 6 Service. 22 RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE LCA SHOWN 06/03 504,785M *2P0603* *P504785M* LGA/LGC/LCA/LCC090, 102, 120, & 150 DIMENSIONS − LGA/LGC HEAT SECTION SHOWN *Reheat coils are factory−installed in Humiditrol units only. OPTIONAL OUTDOOR CONDENSER COIL AIR HOOD INTAKE AIR CONDENSER (Factory or COIL FAN (2) Field Installed) AA4 (102) 4 (102) BB 28 28 (711) (711) BOTTOM 51/2 20 61/4 20 SUPPLY AIR (140) (508) (159) (508) OPENING CONDENSER EVAPORATOR COIL COIL EE INTAKE BOTTOM AIR RETURN AIR CENTER BLOWER OPENING OF GRAVITY BOTTOM POWER/GAS ENTRY FF 5 x 8 inches (127 x 203 mm) DD 31/2 (89) CC REHEAT COMPRESSORS BLOWER COIL* MOTOR CONDENSER 311/4 COILS (794) TOP VIEW TOP VIEW Base Section CONDENSER COIL CONDENSER COIL EXHAUST AIR EXHAUST AIR 991/4 991/4 OPTIONALDISCONNECT / (2521) OPTIONAL (2521) CIRCUIT BREAKER 115 VOLT OUTLET (Factory or Field Installed) (Factory Installed) CONTROL BOX BLOWER CONDENSER COIL FAN BLOWER CONDENSER COIL INTAKE AIR 61/4 20 15 (381) (159) (508) 28 28 (711) (711) 1/2 51/2 (13) (140) 5 ELECTRIC INLETS FLUE OUTLET (127) HEAT HORIZONTAL FORKLIFT HORIZONTAL RETURN AIR 35 GAS EXCHANGER LIFTING HOLES (889) SLOTS SUPPLY AIR OPENING INLET (For Rigging (Front and Back) OPENING Front and Back) FRONT VIEW BACK VIEW 58 (1473) 213/4 58 213/4 FILTERS OPTIONAL OUTDOOR AIR HOOD (1473) REHEAT (552) (552) (Factory or Field Installed) FILTERS EVAPORATOR COIL* Required with Economizer or EVAPORATOR COIL Outdoor Air Damper COIL FILTER CONTROL BOX FILTER OUTDOOR 50 *OPTIONAL GRAVITY AIR REHEAT OUTDOOR (1270) EXHAUST DAMPERS COIL* AIR (Factory or Field Installed) 463/4 CONDENSATE OPTIONAL OUTDOOR (1187) *OPTIONAL EXHAUST DRAIN AIR HOOD HOOD (Field Installed) (Factory or Field EXHAUST Installed) AIR OPTIONAL POWER EXHAUST FANS OPTIONAL OUTDOOR AIR DAMPERS (Factory or Field Installed) Downflow Applications Only (Manual or Automatic) 5 211/4 (Factory or Field 31/4 OPTIONAL ECONOMIZER (127) (540) Installed) (83) DAMPERS (Factory or Field Installed) LEFT SIDE LEFT SIDE (Outdoor Air Dampers) (Economizer) *NOTE Field Installed in Return Air Duct for Horizontal Applications. Page 1 LGA/LGC090, 102, 120, & 150 PARTS ARRANGEMENT FILTERS ECONOMIZER EVAPORATOR CONDENSER (FOUR − 18 X 24 X 2") (OPTIONAL) COIL FANS A55 (M1) MAIN CONTROL BLOWER BOARD 120V GFCI OUTLET BLOWER (OPTIONAL) MOTOR REHEAT COIL (Humiditrol® Units Only) FILTER DRIER DISCONNECT / CIRCUIT BREAKER (FACTORY OR FIELD INSTALLED OPTION) CONDENSATE CONDENSER COILS DRAIN COMBUSTION GAS VALVE AIR INDUCER FILTER DRIER BURNERS COMPRESSORS LCA/LCC090, 102, 120, & 150 PARTS ARRANGEMENT FILTERS ECONOMIZER EVAPORATOR CONDENSER (FOUR − 18 X 24 X 2") (OPTIONAL) COIL FANS A55 (M1) BLOWER MAIN CONTROL BOARD 120V GFCI OUTLET BLOWER (OPTIONAL) MOTOR REHEAT COIL (Humiditrol® Units Only) FILTER DRIER DISCONNECT / CIRCUIT BREAKER (FACTORY OR FIELD INSTALLED OPTION) CONDENSATE CONDENSER COILS DRAIN ELECTRIC HEAT (Optional) FILTER DRIER COMPRESSORS Page 2 CAUTION WARNING Danger of sharp metallic edges. Can cause injury. Electric shock hazard and danger of Take care when servicing unit to avoid accidental explosion. Can cause injury, death or contact with sharp edges. product or property damage. Turn off gas and electrical power to unit before Shipping and Packing List performing any maintenance or servicing operations on the unit. Follow Package 1 of 1 contains: lighting instructions attached to unit 1− Assembled unit when putting unit back into operation IMPORTANT − HumiditrolR units require a specific and after service or maintenance. field−provided and installed humidity sensor. See figure 1 for unit clearances. Check unit for shipping damage. Receiving party should SERVICE CLEARANCES contact last carrier immediately if shipping damage is TOP CLEARANCE UNOBSTRUCTED found. ÇÇÇÇÇÇÇ General 36 ÇÇÇÇÇÇÇ(914) These instructions are intended as a general guide ÇÇÇ ÇÇÇÇ ÇÇÇÇÇÇÇ and do not supersede local codes in any way. ÇÇÇÇ Authorities having jurisdiction should be consulted ÇÇÇ ÇÇÇÇ ÇÇÇ36 36 before installation. (914) (914) ÇÇÇÇ The LGA/LGC090, 102, 120, & 150 gas/electric ÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇ packaged rooftop unit is available in 130,000 Btuh or ÇÇÇ Minimum 235,000 Btuh heating inputs. The LCA/LCC090, 102, ÇÇÇÇÇÇÇ *60 inches (1676mm) *36 clearance to 120 & 150 cooling packaged rooftop unit is the same (914) combustible recommended ÇÇÇÇÇÇÇmaterial. basic design as the LGA/LGC unit except for the service clearance for heating section. Optional electric heat is factory− or blower deck removal.ÇÇÇÇÇÇÇ field−installed in LCA/LCC units. LGA/LGC and NOTE− ENTIRE PERIMETER OF UNIT BASE REQUIRES SUP LCA/LCC units have identical refrigerant circuits with PORT WHEN ELEVATED ABOVE MOUNTING SURFACE. respective 7−1/2, 81/2, 10, and 121/2 ton cooling capacities. FIGURE 1 In addition to standard heating and cooling, Humiditrol® units provide a dehumidifying mode of operation. Refer to Unit Support Reheat Operation section. In downflow discharge installations, install the unit on a The LGC/LCC120S unit is available using R410A, an non−combustible surface only. Unit may be installed on ozone−friendly HFC refrigerant. Refer to the Cooling Start−Up combustible surfaces when used in horizontal discharge section for precautions when installing unit. applications or in downflow discharge applications when installed on an LARMF10/15 roof mounting frame. Requirements NOTE − Securely fasten roof frame to roof per local codes. NOTE − These units must not be used as a A−Downflow Discharge Application construction heater" at any time during any phase of Roof Mounting with LARMF10/15 construction. Very low return air temperatures, harmful vapors, and misplacement of the filters will 1− The LARMF roof mounting frame must be installed, damage the unit and its efficiency. flashed and sealed in accordance with the instructions provided with the frame. 2− The LARMF roof mounting frame should be square IMPORTANT and level to 1/16" per linear foot (5mm per linear The Clean Air Act of 1990 bans the intentional vent meter) in any direction. ing of refrigerant (CFC’s and HCFC’s) as of July 1, 1992. Approved methods of recovery, recycling or 3− Duct must be attached to the roof mounting frame reclaiming must be followed. Fines and/or incar and not to the unit; supply and return plenums must ceration may be levied for non−compliance. be installed before setting the unit. Page 3 Installer’s Roof Mounting Frame Rigging Unit For Lifting Many types of roof frames can be used to install the unit depending upon different roof structures. Items to keep Rig unit for lifting by attaching four cables to holes in unit in mind when using the building frame or supports are: base rail. See figure 2. 1− The base is fully enclosed and insulated, so an 1− Detach wooden base protection before rigging. enclosed frame is not required. 2− Connect rigging to the unit base using both holes in 2− The frames or supports must be constructed with each corner. non−combustible materials and should be square and level to 1/16" per linear foot (5mm per linear meter) in 3− All panels must be in place for rigging. any direction. 4− Place fieldprovided HĆstyle pick in place just above 3− Frame or supports must be high enough to prevent top edge of unit. Frame must be of adequate any form of moisture from entering unit. strength and length. (H−style pick prevents damage Recommended minimum frame height is 14" to top of unit.) (356mm). 4− Duct must be attached to the roof mounting frame and not to the unit. Supply and return plenums must RIGGING be installed before setting the unit. *WEIGHT UNIT IMPORTANT − ALL 5− Units require support along all four sides of unit base. LBS. KG. PANELS MUST BE IN Supports must be constructed of steel or suitably LGA/LGC 1615 733 PLACE FOR RIGGING. LCA/LCC 1530 694 treated wood materials. *Maximum weight with all available NOTE−When installing a unit on a combustible surface for factory−installed accessories. LIFTING POINT SHOULD downflow discharge applications, an LARMF10/15 roof BE DIRECTLY ABOVE mounting frame is required. CENTER OF GRAVITY B−Horizontal Discharge Applications 1− Units installed in horizontal airflow applications must use a horizontal conversion kit (56K53). 2− Specified installation clearances must be maintained when installing units. Refer to figure 1. 3− Top of support slab should be approximately 4" (102mm) above the finished grade and located so no run−off water from higher ground can collect around the unit. CAUTION − Do not 4− Units require support along all four sides of unit base. walk on unit. Supports must be constructed of steel or suitably FIGURE 2 treated wood materials. Duct Connection Condensate Drains All exterior ducts, joints and openings in roof or building walls must be insulated and weather−proofed with flashing and sealing compounds in accordance with Make drain connection to the 1" N.P.T.