LENNOX Air Conditioner/heat Pump(outside Unit) Manual L0806422
User Manual: LENNOX LENNOX Air conditioner/heat pump(outside unit) Manual LENNOX Air conditioner/heat pump(outside unit) Owner's Manual, LENNOX Air conditioner/heat pump(outside unit) installation guides
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INSTALLATION INSTRUCTIONS ,?_2008 Lennox industries Inc, Dallas, Texas, USA Merit® Series13HPX Units HEAT PUMP UNITS 505,325M 03/08 Supersedes 07/07 WARNING A CAUTION A IMPORTANT IMPORTANT _Technical LLJJ Publications Litho U.S.A. 13HPX Outdoor Unit ........................... Shipping and Packing List ...................... Unit Dimensions ............................... General Information ........................... Setting the Unit ............................... Electrical ..................................... Refrigerant Piping ............................. Flushing Existing Line Set and Indoor Coil ........ Refrigerant Metering Device .................... Manifold Gauge Set ........................... Service Valves ................................ Leak Testing .................................. Evacuation ................................... Start-Up ...................................... Refrigerant Charge ............................ Checking Airflow .............................. Setup for Checking and Adding Charge .......... System Operation ............................. Defrost System ............................... Maintenance .................................. Optional Accessories .......................... Homeowner Information ........................ Thermostat Operation .......................... 13HPX Check List ............................. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE 1 1 2 2 3 4 6 8 10 10 10 11 11 12 12 12 13 17 17 18 19 19 20 20 13HPX Merit ® outdoor units use HFC-410A refrigerant. This unit must be installed with a matching indoor blower coil and line set as outlined in the Lennox Engineering Handbook. 13HPX outdoor units are designed for use in expansion valve systems only. They are not designed to be used with other refrigerant flow control devices. An expansion valve approved for use with HFC-410A must be ordered separately and must be installed prior to operating the unit. 1 - Assembled 13HPX outdoor unit Check the unit components for shipping damage. If you find any damage, immediately contact the last carrier. 03/08 IIIHIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Page 1 505,325M IIIIIIIIIIIIIIIIIIIIIIIIIIIIII ,_lnletAir 4-3/8 (111) Optional Unit Standoff Kit (4) (Fieldinstalled', © Coil Drain Outlets (Around Perimeter Of Base) Inlet Air Inlet Air 4-3/8 (111) 6-3/8 Vapor Line Connection Inlet Ai '_ru 4-3/8 (111) (182) Liquid Line Connection TOP VIEW TOP VIEW BASE SECTION Outdoor Coil Fan \ tDischarge Compressor_ Vapor & Liquid Optional Unit Stand-off Kit (4) (Field-installed) Line Connections L 2-3/4 (70) SIDE VIEW Model No. A B 13HPX-018 13HPX-024 13HPX-030 13HPX-036 13HPX-042 24-1/4 24-1/4 24-1/4 24-1/4 28-1/4 (616) (616) (616) (616) (616) 13HPX-048 13HPX-060 28-1/4 (718) 28-1/4 (718) SIDE VIEW 3/4 (19) 33-1/4 33-1/4 29-1/4 33-1/4 33-1/4 When servicing or repairing HVAC components, ensure caps and fasteners are appropriately tightened. Table 1 lists torque values for typical service/repair items. C (845) (845) (743) (845) (845) 37-1/4 (946) 43-1/4 (1099) 32-1/2 32-1/2 28-1/2 32-1/2 32-1/2 (826) (826) (724) (826) (826) Table 1. Torque Requirements 36-1/2 (927) 42-1/4 (1073) These instructions are intended as a general guide and do not supersede national or local codes in any way. Consult authorities having jurisdiction before installation. Page 2 505325 03/08 Part Recommended Torque Liquid service valve cap 8 ft.- lb. Suction service valve cap 11 ft.- lb. 15 NM Sheet metal screws 16 in.- lb. 2 NM Machine screws #8 28 in.- lb. 3 NM Compressor bolts 90 in.- lb. 10 NM Gauge port seal cap 85ft.- lb. 7 NM 11 NM WARNING (AS NOTED) *A service clearance of 30" (702 mm) must be maintained on one of the sides adjacent to the control box. Clearance to one of the other three sides must be 36" (914 mm), Clearance to one of the remaining two sides may be 12" (305 mm) and the final side may be 6" (152 mm). A clearance of 24" (610 mm) must be maintained between two units, 48" (1219 mm) clearance required on top of unit, Maximum soffit overhang is 36" (914 mm). Figure 1 Installation Clearances SLAB MOUNTING CAUTION Outdoor units operate under a wide range of weather conditions; therefore, several factors must be considered when positioning the outdoor unit. Unit must be positioned to give adequate clearances for sufficient airflow and servicing. A minimum clearance of 24 inches (610 mm) between multiple units must be maintained. Refer to figure 1 for installation clearances. When installing the unit at grade level, the top of the slab should be high enough above the grade so that water from higher ground will not collect around the unit, See figure 2. The slab should have a slope tolerance away from the building of 2 degrees or 2 inches per 5 feet (51 mm per 1524 mm). This will prevent ice build-up under the unit during a defrost cycle. Refer to roof mounting section for barrier construction if the unit must face prevailing winter winds, STRUCTURE , 1. Place a sound-absorbing material, such as Isomode, under the unit if it will be installed in a location or position that will transmit sound or vibration to the living area or adjacent buildings. 2. Mount unit high enough above ground or roof to allow adequate drainage of defrost water and prevent ice build-up. 3. In heavy snow areas, do not locate unit where drifting will occur. The unit base should be elevated above the depth of average snows. NOTE- Elevation of the unit may be accomplished by constructing a frame using suitable materials. Ira support frame is constructed, it must not block drain holes in unit base. 4. When installed in areas where low ambient temperatures exist, locate unit so winter prevailing winds do not blow directly into outdoor coil. 5. Locate unit away from overhanging roof lines which would allow water or ice to drop on, or in front of, coil or into unit. DISCHARGE AIR I/I/I/I/I/ l/I///// MOUNTING SLAB MUST SLOPE AWAY FROM BUILDING. GROUNDLEVEL Figure 2. Slab Mounting At Ground Level ROOF MOUNTING Install unit a minimum of 6 inches (152 mm) above the roof surface to avoid ice build-up around the unit. Locate the unit above a load bearing wall or area of the roof that can adequately support the unit, Consult local codes for rooftop applications, Page 3 13HPX SERIES PREVAILING WINTER WINDS I © WIND BARRIER . I NOTE - To facilitate conduit, a hole is in the bottom of the control box. Connect conduit to the control box using a proper conduit fitting. INLET AIR INLET AIR NO TE - Units are approved for use only with copper conductors. 24V, Class II circuit connections are made in the low voltage junction box. Refer to figure 4 for field wiring diagram. INLET AIR 0 Ground unit at unit disconnect switch or to an earth ground. 0 NOTE - A complete unit wiring diagram is located inside the unit control box cover. NOTE - For proper voltages, select thermostat wire gauge per the following chart: 0 INLET AIR Figure 3. Rooftop Application Wind Barrier Construction If unit coil cannot be mounted away from prevailing winter winds, construct a wind barrier. Size barrier at least the same height and width as the outdoor unit. Mount barrier 24 inches (610 mm) from the sides of the unit in the direction of prevailing winds. . . In the U.S.A., wiring must conform with current local codes and the current National Electric Code (NEC). In Canada, wiring must conform with current local codes and the current Canadian Electrical Code (CEC). I WARNING Wire run length AWG # Insulation type less than 100' (30m) 18 color-coded, temperature more than 100' (30m) 16 rating 35°C minimum Install room thermostat (ordered separately) on an inside wall approximately in the center of the conditioned area and 5 feet (1.5 m) from the floor. It should not be installed on an outside wall or where it can be effected by sunlight, drafts or vibrations. Install low voltage wiring from outdoor to indoor unit and from thermostat to indoor unit. See figures 6 and 7. NOTE - 24V, Class II circuit connections are made in the low voltage junction box. OUAL CAPACITOR @_ @ ._.THERIIOST AT _C_ ,_ I I_j, I _-_J_j --- @ II ..... .I 208-230/60/I mll 2 _ 1,6ROUND Refer to the furnace or blower coil installation instructions for additional wiring application diagrams and refer to unit nameplate for minimum circuit ampacity and maximum overcurrent protection size. 1. Install line voltage power supply to unit from a properly sized disconnect switch. Page 4 505325 03/08 Z_ NOTEFOR USE WITH COPPER CONDUCTORS ONLY.REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AUPACITY AND MAXIMUM OVERCURRENT PROTECTION SIZE WARNING- Z_ ELECTRIC SHOCK HAZARD, CAN CAUSE INJURYOR DEATH. UNIT MUST BE GROUNDED IN ACCORDANCE AND LOCAL CODES. WITH NATIONAL Figure 4. Typical Field Wiring Diagram OUTDOOR FAN DEFROST CONTROL CAPACITOR THERMOSTAT FAN PURPLE ORANGE o.r_. ,o®e] T BLACK BLACK BLACK I )_DUAL pOUT RED LO-PS -_ BLACK LLOW COMPRESSOR I I t _ Iljll ----Jl II I I J l J R 0 O 0 YI J COMMON Y I BUT CRANKCASE HEATER HI=PS 208-230/60/I IIL2 DLE GROUND LUG z_x I,'BROUNO THERMOSTATOEPROST b _REVERSINGvALVE CMC FAN __ I I I I LOW 587 LOW I_)_ZENTpRESSU2# o OUT LB20:B3OXBOZ'; "]_ _ T I_.__ IORANGF b Ir- II '11 LO--PB I ¢_ BLACK IS r_v _ I I RO OF L COMMON yO _OUT I HI -PS EQUIPMENTHR' ]__A_ r_ DESCRIPTION
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