Page 2 - Installation Clearances; there should be a minimum of 60; Rooftop Installations; Never purge refrigerant into an enclosed room or; WARNING; Never fill a cylinder more than 80% full of liquid re-; WARNING; Refrigerant Lines; CAUTION
2 Installation Clearances Special consideration must be given to location of the con-densing unit(s) in regard to structures, obstructions, other units,and any/all other factors that may interfere with air circulation.Where possible, the top of the unit should be completely unob-structed; however, i...
Page 3 - If changing refrigerant types, ensure the indoor coil and; Burying Refrigerant Lines; Insulate liquid and suction lines separately.
3 Use only refrigerant grade (dehydrated and sealed) copper tub-ing to connect the condensing unit with the indoor evaporator.After cutting the tubing, install plugs to keep refrigerant tubingclean and dry prior to and during installation. Tubing shouldalways be cut square keeping ends round and fre...
Page 4 - REFRIGERANT UNDER PRESSURE!
4 Refrigerant Line Connections NOTICE THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUMHOLDING CHARGE ONLY. UNIT MUST BE EVACUATEDAND CHARGED PER INSTALLATION INSTRUCTIONSWITH REFRIGERANT LISTED ON SERIAL RATING PLATE. NOTICE UNITS SHIPPED WITH A HOLDING CHARGE AREINTENDED FOR COMPONENT REPLACEMENT ONLY O...
Page 5 - and; Electrical Connections
5 NOTICE THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUMHOLDING CHARGE ONLY. UNIT MUST BE EVACUATEDAND CHARGED PER INSTALLATION INSTRUCTIONSWITH REFRIGERANT LISTED ON SERIAL RATING PLATE. NOTICE UNITS SHIPPED WITH A HOLDING CHARGE AREINTENDED FOR COMPONENT REPLACEMENT ONLY ONEXISTING SYSTEMS, AND NOT IN...
Page 6 - High Voltage Connections; System Start Up; NOTICE; See
6 Local codes often require a disconnect switch located near theunit; do not install the switch on the unit. Refer to the installa-tion instructions supplied with the indoor furnace/air handler forspecific wiring connections and indoor unit configuration. Like-wise, consult the instructions packaged...
Page 7 - Charge Verification; Final Charge Adjustment
7 Charge Verification REFRIGERANT UNDER PRESSURE! • Do not overcharge system with refrigerant.• Do not operate unit in a vacuum or at negative pres- sure.Failure to follow proper procedures may cause property damage, personal injury or death. WARNING Use refrigerant certified standards. Use of used ...
Page 9 - Fixed Orifice; Expansion Valve System
9 Fixed Orifice CAUTION To prevent personal injury, carefully connect and disconnectmanifold gauge hoses. Escaping liquid refrigerant can causeburns. Do not vent refrigerant into the atmosphere. Recover allrefrigerant during system repair and before final unit disposal. 1. Purge gauge lines. Connect...
Page 10 - Troubleshooting Information
10 Troubleshooting Information For detailed service information refer to the Remote Condensing Unit Service manual. Complaint Unsatisfactory Cooling POSSIBLE CAUSE DOTS IN ANALYSIS GUIDE INDICATE "POSSIBLE CAUSE" SY M P T O M Sy s tem wi ll not s ta rt C o mpr e sso r w ill no t star t - fan...
Page 11 - THIS PAGE INTENTIONALLY LEFT BLANK
Page 12 - SPLIT SYSTEMS; AIR CONDITIONING AND HEAT PUMP HOMEOWNER’S
12 SPLIT SYSTEMS AIR CONDITIONING AND HEAT PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS We strongly recommend a bi-annual maintenance checkup be performed before the heating and cooling seasons begin by a qualified servicer. R EPLACE OR C LEAN F ILTER IMPORTANT NOTE: Never operate unit witho...
Page 13 - Important Safety Instructions; Shipping Inspection; CONDENSING AC UNIT; Should you have any; there should be a minimum of 60 inches be-
Important Safety Instructions The following symbols and labels are used throughout thismanual to indicate immediate or potential safety hazards. It isthe owner’s and installer’s responsibility to read and complywith all safety information and instructions accompanying thesesymbols. Failure to heed s...
Page 14 - When raising and setting the unit,; Safe Refrigerant Handling
2 Use field-supplied spreader bars when lifting the unit to mini-mize the possibility of lifting cable/straps damage. To protectthe cabinet louvers, use protective material such as plywoodbehind the cable/straps. Arrange the straps to form a centralsuspension point. NOTE: When raising and setting th...
Page 15 - Filter Drier and Sight Glass
3 To avoid possible explosion, use only returnable (notdisposable) service cylinders when removing refrig-erant from a system. • Ensure the cylinder is free of damage which could lead to a leak or explosion.• Ensure the hydrostatic test date does not exceed 5 years.• Ensure the pressure rating meets...
Page 16 - Refrigerant Line Connections; IMPORTANT; System Evacuation
4 Refrigerant Line Connections NOTICE THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUM HOLDING CHARGE ONLY. UNIT MUST BE EVACUATED AND CHARGED PER INSTALLATION INSTRUCTIONS WITH REFRIGERANT LISTED ON SERIAL RATING PLATE. NOTE: Holding charge must be removed before brazing. Open service valves slowly to r...
Page 17 - must; be in
5 5000 4500 4000 3500 3000 2500 2000 1500 1000 500 0 1 2 3 4 5 6 7 8 9 10 LEAK(S)PRESENT MINUTES V AC U U M IN M IC RON S CONDENSIBLES OR SMALLLEAK PRESENT NO LEAKSNO CONDENSIBLES • If the pressure rises to 1000 microns or less and remainssteady the system is considered leak-free; proceed tostartup....
Page 19 - TUBING SIZE; Troubleshooting; Qualified Installer/Servicer Only
7 For the 7-1/2 ton unit starting charge should be 15 lb of R-22and 18 lbs for the 10 ton unit. The length of line set, indoor unitairflow, condensing unit location and number of tubing fittingswill have an impact on final unit charge amount. Turn the elec-trical power on, and let the system run. Wa...
Page 20 - TROUBLESHOOTING ANALYSIS TABLE; Wiring Diagram
8 TROUBLESHOOTING ANALYSIS TABLE COMPLAINT PROBABLE CAUSE REMEDY 1. E xcessive charge of refri gerant i n system. 1. Purge or pump-down exc essi ve charge. 2. Inadequate suppl y of air across the 2. Make certain that coi l i s not fouled in any condens er coil. way, or that ai r i s not re-ci rculat...