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or Distributor however the trap should be shallow as the: (4) elbow configuration. Each elbow is approximately 2 equivalent feet. One P-trap is equal to approximately 8 equivalent feet. P-TRAP INSTALLATION Figure #1 8Multi-zone Heat Pump Condensing Units REFRIGERANT PIPING INSTALLATION SECTION 9Multi-zone Heat Pump Condensing Units Vaccum Pump Micron Gage Manifold Setup For Evacuation S1CAShownIt is illegal to discharge refrigerant into the atmosphere. Use proper reclaiming methods & equipment when installing or servicing this unit. WARNING! ! 2. Protect the valves by wrapping with a wet rag "heat sink" before brazing. S1CShown 1. Clean the ends of tubing and insert into fittings. 3. The use of a shield is recommend (one can be made from some scrap metal) to protect the paint. 4. Braze tubing into fittings. 5. Verify that the correct piston for the system match is in place, refer to the air handler Installation Instructions. 6. Refer to the indoor air handler Installation Instructions for any specific details regarding the connection of tubing. Connect and braze tubing into the indoor air handler. 7. Attach manifold set. Manifold 8. Evacuate line to 500 microns or less to ensure all moisture has been removed and there are no leaks. RefrigerantRefer to Refrigerant Charge Table for specified line charge. S1CAShownNote:Charging should be done with a dial-a-charge or weighed in with a scale. S2CAShownIMPORTANT: All systems require field charge adjustments. Refer to the "Refrig- erant Charge Tables" for proper weight charge and to the supplied “Field Charging Charts" for proper system pressures and temperature at different outdoor condi- tions. Superheat should be used for final system charge in cooling mode. Subcool should be used for final system charge in heating mode. REFRIGERANT PIPING INSTALLATION SECTION RefrigerantRefer to Refrigerant Charge Table for specified line charge. S1CAShownNote:Charging should be done with a dial-a-charge or weighed in with a scale. S2CAShownIMPORTANT: All systems require field charge adjustments. Refer to the "Refrig- erant Charge Tables" for proper weight charge and to the supplied “Field Charging Charts" for proper system pressures and temperature at different outdoor condi- tions. Superheat should be used for final system charge in cooling mode. Subcool should be used for final system charge in heating mode. REFRIGERANT PIPING INSTALLATION SECTION 9. Once certain of a good evacuation and leak free joints, back-seat the valves (counter-clockwise) to open and allow factory charge to fill lines and indoor unit. 10. Charge to proper weight, charge based on feet of interconnect (table on next page) S1CAShown 11. Refer to Field Charging Charts to “fine tune” the refrigerant charge to meet your conditions. The units are delivered precharged with refrigerant for the condenser coil and the evaporator. Charging of the field installed piping is required. Refer to the refrigerant charge table for the proper amount to be added for the applications interconect piping. Unit service valves are solid brass, for sweat connections. RECAP OF COMPLETING PIPING CONNECTIONS Pressure test all field installed piping and the indoor air handler with nitrogen. Using a suitable vacuum pump, evacuate the tubing and indoor unit to 500 microns or less, with service values remaining front seated (closed). Before releasing the refrigerant from the condenser, be sure the manifold gauge set is closed so as not to lose vacuum when shutting down the pump. Release refrigerant from the condensing unit by back seating the service value. Allen wrenches are used to open the valve. Replace valve caps. Be Careful to not back seat the valves past the snap flanges that hold the valve core in place. 10Multi-zone Heat Pump Condensing Units CIRCUIT CAPACITY EVAPORATOR PAIRING LINE CHG/FT LINE LENGTH LINE ADJUST FACTORY CHARGE SYSTEM TOTAL S2HA S2HA 9,000 Btuh WLHA09, CAHB12 WLHA12, CAHB12 .25 OZ. 10 25 50 3 OZ. 6 OZ. 13 OZ. 42 45 48 55 12,000 Btuh WLHA12 CAHB12 .25 OZ. 10 25 50 3 OZ. 6 OZ. 13 OZ. 46 49 52 59 IMPORTANT NOTES: 1. To find the charge adjustment and system charge for any evaporator and tubing length: Line Adjustment = (Line Charge/FT) x Line Length System Total = Factory Charge + Line Adjustment 2. Round to the nearest ounce and allow for gauges and hoses. REFRIGERANT CHARGE TABLE FOR S2HA REFRIGERANT PIPING INSTALLATION SECTION FIELD CHARGING The use of the superheat method is highly recommended for field charging or checking the existing refrigerant charge in a system. Because each installation is different in terms of indoor air flow, refrigerant line length, etc.., the factory charge may not be correct for every application. To assure the best performance from the air-conditioner, the refrigerant charge should be checked and adjusted, if need be, on each installation. For proper superheat readings, a standard low-side refrigerant gauge and an ac...