Commercial Split System Installation Chart
Contents
1. UNIT Li Line Size in OD eee aoe os a tjs Lij sjJ tjs L f s 1 LLSV Liquid Line Solenoid Valve All piping must follow standard refrigerant piping techniques 7 1 2 Ton p l i NEC National Electrical Code Refer to Product System Design Manual for details Single Circuit 2 Stage 2 ae 2 eG 2 me 2 re TXV Thermostatic Expansion Valve l l 10 Ton All wiring must comply with the applicable local and national codes Single Circuit 1 Stage 11 8 or 13 8 Field supplied See Refrigerant Specialties Wiring and piping shown are general points of connection guides only and are table in 3 Install Refrigerant Piping not intended for or to include details for a specific installation h N section opposite 4 Liquid line solenoid valve solenoid drop control is recommended to prevent See VAT REF ee SP EAA TES ean amen tAccessory Item refrigerant migration to the compressor LIQUID LINE FILTER 5 Internal factory supplied TXVs not shown SIZE in OD SOLENOID VALVE COIL GLASS DRIER s s KH43LG091 S s KH43LG087 Bushings required S F C O N S D E R TI O N S HEAT PUMP UNIT REFRIGERANT SPECIALTIES PART NUMBERS LIQUID LINE LIQUID LINE SOLENOID SIGHT FILTER e Installing starting up and servicing air conditioning e When working on the equipment observe precautions SIZE In OD SOE VALVE COIL GLASS CREN equipment can be hazardous due to system pressures in the literature and on ta2. Com mercial Spl it System 6 to 12 2 Ton Condensing Units 6 7 2 and 10 Ton Heat Pump Units E i nN ST a at i O Nn C h a rt See Installation Start Up and Service Manual for detailed instructions and safety precautions TYPICAL PIPING AND WIRING 3 INSTALL REFRIGERANT PIPING Rooftop Installation 1 Select suction S and liquid L line size from the table below FIELD SUPPLIED 2 Select refrigerant specialties WEATHERPROOF i i Se eo 3 Maximum linear line length is 100 ft Contact applications engineering for details on lengths over 100 ft 4 Do not bury refrigerant piping underground MOISTURE ELECTRIC INDICATOR HEATER FIELD SIGHT GLASS ACCESSORY SUPPLIED REFRIGERANT PIPING SIZES CONDENSING UNITS POWER LINEAR LENGTH OF PIPING FT LEGEND UNIT oes 23550 5o75 75 100 L Liquid Line u Line Size in OD S Suction Line ir tjs ij sJ tjJ s L s NOTES 6 Ton INDOOR 715 Ton ona oss for liqui INSULATED C i UNIT Single Circuit 1 Stage 2 A ome f P POWER WIRES Single Circuit 1 Stage 19 8 ae ae _ eos am aieas H nthe me owas MR ee EL e Rema ee erm on ere ore eve nele rcio FIELD SUPPLIED Bi a B ee REFRIGERANT PIPING SIZES HEAT PUMP UNITS TO OPEN SIGHT LINEAR LENGTH OF PIPING FT L DRAIN
3. d with Advanced Scroll Temperature Protection Refer to the Installation Start Up and Service manual for additional information gt OPEN Ceometanct scram Advanced Scroll Temperature Protection Compressor May Stop Pumping With Motor Running Turn Off And Wait Until Cool May Need More Than 1 Hour To Reset www EmersonClimateContractor com ASTP
4. gs stickers and labels 3 9 EF 680033 plus EF680037 KM680008 KH43LG088 electrical components and equipment location attached to the equipment EF680039 biflow kit e Only trained qualified installers and service mechanics e Follow all safety codes Wear safety glasses and work 1 2 MERE EE nee EF680037 KM680004 KH43LG089 should install start up and service this equipment gloves Keep quenching cloth and fire extinguisher mo Aod EF e Untrained personnel can perform basic maintenance nearby when brazing Use care in handling rigging 5 8 EE EF680037 KM680005 KH43LG090 and setting bulky equipment functions such as cleaning coils All other operations Bushings required should be performed by trained service personnel Typical Piping for Units on the Same Level 1 INSPECT UNIT 1 Verify that RA i a power supply 230 OU OOR _ FILTER baaria conREGT ES 5K A 2 Inspect for pean damage FROM o SOLENOID VALVE SOLENOID VALVE DAMAGE HEAT PUMP UNIT CONDENSING UNIT Typical Piping When Indoor Unit is Above the Outdoor Unit NOTES l 1 For applications with liquid lift ie 2 N STALL O UTDOO R U N IT greater tnan 2s 1 USe lAn DIAMS F INDOOR liquid line where 3 8 in is MIN 10 COIL shown use 5 8 in liq
5. uid line DIAMS where 1 2 in is shown ny A 1 Select a location that meets Clearances 2 Maximum liquid lift is 60 ft 3 Dual circuit units require 2 the requirements and MINIMUM eee suction and 2 liquid lines limitations of the refrigerant cae oe MINIMUM 60 MINIMUM CLEARANCE ae x FILTER piping recommendations DRIER LIQUID LIQUID LINE SOLENOID VALVE CONDENSING UNIT _ l 36 CS shown in next section Th a 8 Install Refrigerant Piping Maintain adequate cd clearance for airflow 60 MAX and service access OUTDOO UNIT SS S Unit may be mounted on a field supplied pad or support rails LIQUID LINE SOLENOID VALVE HEAT PUMP UNIT Copyright 2014 CAC BDP 11 14 Catalog No 38AU 02CI Replaces 38AU 01CI Continued on back 4 MAKE ELECTRICAL CONNECTIONS 5 UNIT PRE START A WARNING Before installing or servicing system always turn off main power to system and install lockout tag on disconnect There may be more than one disconnect switch Electrical shock can cause personal injury POWER WIRING 1 Verify that power is off locked out and tagged off 2 Route power wiring from disconnect through opening in unit end panel and connect in unit control box as shown on the
6. unit label diagram POWER WIRING ACCESS PANEL ENTRY NEC DISCONNECT x A WH CZ CO THERMOSTAT LEFT SIDE VIEW WIRING ENTRY Transformer Wiring 460V TRAN CONFIG CONTROL WIRING 1 Verify that power is off BLK locked out and tagged off 2 Transformer wiring If supply voltage is 208 v or 400 v move the black wire to the appropriate terminal 3 Make connections from thermostat to terminal strip TB in the outdoor unit Single Compressor 1 Stage Condensing Unit THERMOSTAT LEGEND LEGEND IFC Indoor Fan Contactor IFC Indoor Fan Contactor LLSV Liquid Line Solenoid Valve LLSV1 Liquid Line Solenoid Valve Circuit No 1 TB Terminal Board LLSV2 Liquid Line Solenoid Valve Circuit No 2 TB Terminal Board Single Compressor 2 Stage Condensing Unit THERMOSTAT LEGEND IFC Indoor Fan Contactor LLSV Liquid Line Solenoid Valve TB Terminal Board Heat Pump Single Compressor 1 Stage Unit Heat Pump Single Compressor 2 Stage Unit THERMOSTAT THERMOSTAT LEGEND LEGEND IFC Indoor Fan Contactor IFC Indoor Fan Contactor LLSV Liquid Line Solenoid Valve LLSV Liquid Line Solenoid Valve TB Terminal Board TB Terminal Board PRE START UP TIPS e Read Installation Start Up and Service manual e Use start up checklist e Check all wiring connections e Open service valves e Turn on power for indoor and outdoor sections e Energi
7. ze crankcase heater for 24 hours prior to start up e Make sure compressor s can move freely on mounting snubbers or springs LEAK TEST 1 Pressurize refrigerant piping do not exceed 150 psi 2 Check for leaks 150 PSI MAX QO DRY NITROGEN LIQUID LINE INDOOR SOLENOID VALVE COIL SUCTION LINE ae LON EVACUATION CAUTION Outdoor unit contains a partial factory charge of R 410A review rating plate for exact charge amount Opening liquid line ball valve prior to charging will release holding charge OUTDOOR UNIT INITIAL CHARGING UNIT OFF 1 After evacuating the system fill the liquid line with R 410A tank upside down Then open both service valves 500 1000 ee MICRON GAUGE EVACUATE TO A MINIMUM OF 500 MICRONS RA See eee saans See BROT Bend Boos Ie Pony bed Sess pod Soe Ped pse RSS OVS pogo Lause saasa Launs Soe Peed pse RSSI SN See lt E SUCTION LINE p See Soe LIQUID LINE ee l ID LIN konnad Add 80 of system refrigerant capacity or minimum 9 Ib R 410A TRIM CHARGE LEVEL 1 After system has been started and allowed to stabilize adjust refrigerant level if required basedon the Cooling Charging Chart found on unit and ae in Installation Instructions THERMOMETER 2 Check superheat at the compressor superheat should be 8 to 12 F IMPORTANT Units with Copeland compressors may be equippe
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