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Summary of Contents for Rheem RKKN-C073
- Page 1 INSTALLATION INSTRUCTIONS Package Gas Electric Featuring Industry Standard R-410A Refrigerant RKKN-B073 (6 TON) SERIES RKKN-C073 (6 TON) SERIES WITH CLEAR CONTROL (DDC) ACCREDITED 92-23577-157-03 (SUPERCEDES 92-23577-157-02)
- Page 2 TABLE OF CONTENTS I. Table of Contents ....................2 II. Introduction ......................3 III. Checking Product Received .................. 3 IV. Specifications ......................3 A. General ......................3 B. Major Components ................... 3 C. R-410A Refrigerant ................... 3 1. Specifications of R-410A ................3 2.
- Page 3 II. INTRODUCTION Recognize this symbol as an indication of Important Safety This booklet contains the installation and operating instructions for your combination gas Information! heating/electric cooling unit. There are some precautions that should be taken to derive maximum satisfaction from it. Improper installation can result in unsatisfactory operation WARNING or dangerous conditions.
- Page 4 lines, or be allowed to accumulate in storage tanks. Leak checking should never be done with a mixture of R-410A and air. Leak checking can be performed safely with nitrogen or a mixture of R-410A and nitrogen. 2. Quick Reference Guide For R-410A •...
- Page 5 VI. UNIT DIMENSIONS RKKN 6 TON [21.1 kW] MODELS FIGURE 1 OUTDOOR FAN OUTDOOR COIL ST-A1224-01 FIGURE 2 TOP VIEW 4-1/2 [660] [114] 4-5/8 2-3/8 [118] 2-5/32 [60] 4.502 [55] [114] RETURN 13-1/8 SUPPLY [333] [508] 43-7/32 [1098] 13-1/8 [333] 2-3/8 77-15/32 2-3/8...
- Page 6 FIGURE 3 BACK VIEW ST-A1148 FIGURE 4 SIDE VIEW ST-A1224 FIGURE 5 FRONT VIEW ST-A1224...
- Page 7 WARNING V. SAFETY INFORMATION NEVER TEST FOR GAS LEAKS VII. INSTALLATION WITH AN OPEN FLAME. USE A COMMERCIALLY AVAILABLE A. GENERAL SOAP SOLUTION MADE SPECIF- ICALLY FOR THE DETECTION OF Install this unit in accordance with The American National Standard Z223.1-latest edition LEAKS TO CHECK ALL CONNEC- booklet entitled “National Fuel Gas Code,”...
- Page 8 WARNING FIGURE 6 OUTSIDE SLAB INSTALLATION. CLOSET DISTRIBUTION SYSTEM. SLAB FLOOR CONSTRUCTION. THIS UNIT MAY BE USED TO HEAT THE BUILDING OR STRUC- TURE DURING CONSTRUCTION IF THE FOLLOWING INSTAL- LATION REQUIREMENTS ARE MET. INSTALLATION MUST COM- PLY WITH ALL INSTALLATION INSTRUCTIONS INCLUDING: •...
- Page 9 C. ATTACHING EXHAUST AND COMBUSTION AIR INLET HOODS IMPORTANT: Do not operate this unit without the exhaust/combustion air inlet hood properly installed. This hood is shipped in a carton in the blower compartment inside the unit and must be attached when the unit is installed. See Figure 3. To attach exhaust/combustion air inlet hood: 1.
- Page 10 FIGURE 7 COVER GASKET DETAIL FOR UNITS SHIPPED FOR DOWNFLOW APPLICATION BEING CONVERTED TO HORIZONTAL I631 FIGURE 8 CLEARANCES Recommended Location Clearance A - Front 36“ B - Condenser Coil 12(* C - Duct Side VERTICAL D - Evaporator End 60“...
- Page 11 WARNING DO NOT, UNDER ANY CIRCUMSTANCES, CONNECT RETURN DUCTWORK TO ANY OTHER HEAT PRODUCING DEVICE SUCH AS FIREPLACE INSERT, STOVE, ETC. UNAUTHORIZED USE OF SUCH DEVICES MAY RESULT IN FIRE, CARBON MONOXIDE POISONING, EXPLOSION, PERSONAL INJURY, PROP- ERTY DAMAGE OR DEATH. FIGURE 9 FLAT ROOFTOP INSTALLATION, ATTIC OR DROP CEILING DISTRIBUTING SYSTEM.
- Page 12 AND INSULATION PANEL FLANGES.) FIGURE 10 LIFTING DETAIL SPREADER BAR LIFTING BEAM CABLE OR CHAIN INSULATION PANELS (2) SUPPLIED NAILING STRIP SUPPLY DUCT RETURN DUCT 5/8( SHACKLE (EACH CORNER) CORNER WEIGHTS BY PERCENTAGE I296 FIGURE 11 FIGURE 12 ROOFCURB ROOFCURB UNIT ROOFTOP UNIT ROOFTOP UNIT...
- Page 13 VIII. GAS SUPPLY, CONDENSATE DRAIN AND VIII. PIPING A. GAS CONNECTION IMPORTANT: Connect this unit only to gas supplied by a commercial utility. 1. Install gas piping in accordance with local codes and regulations of the local utility company. In the absence of local codes, the installation must conform to the specifi- cations of the National Fuel Gas Code, ANSI Z223.1 - latest edition.
- Page 14 In making gas connections, avoid strains as they may cause noise and damage the con- trols. Use a backup wrench on the valve to avoid damage. The capacities of gas pipe of different diameters and lengths in cu. ft. per hr. with pres- sure drop of 0.3 in.
- Page 15 FIGURE 15 FIGURE 14 MANIFOLD PIPE D. ADJUSTING OR CHECKING FURNACE INPUT – Natural Gas Line Pressure 5( - 10.5( W.C. – LP Gas Line Pressure 11( - 13( W.C. – Natural Gas Manifold Pressure 3.5( W.C – LP Gas Manifold Pressure - 10( W.C. Supply and manifold pressure taps are located on the gas valve body 1/8( N.P.T.
- Page 16 TABLE 3 FIGURE 16 METER TIME IN MINUTES AND SECONDS FOR NORMAL CONDENSATE DRAIN INPUT RATING OF FURNACES EQUIPPED FOR NATURAL OR LP GAS METER HEATING VALUE OF GAS BTU PER CU. FT. INPUT SIZE 1000 1040 1100 2500 BTU/HR CU.
- Page 17 FIGURE 18 RECOMMENDED BRANCH CIRCUIT DISCONNECT LOCATION TABLE 5 BRANCH CIRCUIT COPPER WIRE SIZE (Based on 1% Voltage Drop)* 45 50 BRANCH CIRCUIT AMPACITY SUPPLY WIRE GAS SUPPLY LENGTH-FEET *Taken from National Electric Code ST-1224 E. CONDENSATE DRAIN The condensate drain connection of the evaporator is threaded 3/4( nominal P.V.C. pipe.
- Page 18 FIGURE 20 FIGURE 19 FIGURE 20 TYPICAL THERMOSTAT WIRING (B073) TYPICAL THERMOSTAT WIRING EXAMPLE FOR CONNECTING THRU-BASE POWER AND FOR INTERNAL WIRING SEE WIRING LABEL ATTACHED TO UNIT. CONTROL WIRING. ALL CHASSIS GROUND LOW VOLTAGE WIRE LEADS CONNECTIONS TO USE WATER-TIGHT FITTINGS.
- Page 19 TABLE 7 FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS SOLID COPPER WIRE - AWG. Length of Run – Feet (1) (1) The total wire length is the distance from the furnace to the thermo- stat and back to the furnace. NOTE: DO NOT USE CONTROL WIRING SMALLER THAN NO.
- Page 20 FURNACE SECTION CONTROLS AND IGNITION SYSTEM NORMAL FURNACE OPERATING SEQUENCE This unit is equipped with an integrated direct spark ignition control. 1. The thermostat calls for heat. 2. The control board will run a self check to verify that the limit control and manual reset overtemperature control are closed and that the pressure switch is open.
- Page 21 5. Remove control door/access panel. 6. Move switch to the “OFF” position. 7. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! • Do not try to light any appliance. •...
- Page 22 LIMIT CONTROL The supply air high temperature limit cut-off is set at the factory and cannot be adjusted. It is calibrated to prevent the air temperature leaving the furnace from exceeding the maximum outlet air temperature. WARNING DO NOT JUMPER THIS DEVICE! DOING SO CAN CAUSE A FIRE OR EXPLOSION RESULTING IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
- Page 23 9. Remove the screws (3) connecting the divider plate to the heat exchanger center panel. 10. Remove the turbulators from inside the heat exchangers by inserting the blade of a screwdriver under the locking tabs. Pop the tabs out of the expanded grooves of the heat exchanger.
- Page 24 Cleaning Evaporator Coil 1. The coil should be cleaned when it is dry. If the coil is coated with dirt or lint, vacuum it with a soft brush attachment. Be careful not to bend the coil fins. 2. If the coil is coated with oil or grease, clean it with a mild detergent-and-water solu- tion.
- Page 25 XII. GENERAL DATA - RKKN MODELS NOMINAL SIZES 6 TON [21.1 kW] 'UDLQ &RQQHFWLRQ 1R 6L]H LQ >PP@ > > @ > > @ NOTES: 1. Cooling Performance is rated at 95° F ambient, 80° F entering dry bulb, 67° F entering wet bulb. Gross capacity does not include the effect of fan motor heat. AHRI capacity is net and includes the effect of fan motor heat.
- Page 26 GENERAL DATA - RKKN MODELS NOMINAL SIZES 6 TON [21.1 kW] NOTES: 1. Cooling Performance is rated at 95° F ambient, 80° F entering dry bulb, 67° F entering wet bulb. Gross capacity does not include the effect of fan motor heat. AHRI capacity is net and includes the effect of fan motor heat.
- Page 27 GENERAL DATA - RKKN MODELS NOMINAL SIZES 6 TON [21.1 kW] NOTES: 1. Cooling Performance is rated at 95° F ambient, 80° F entering dry bulb, 67° F entering wet bulb. Gross capacity does not include the effect of fan motor heat. AHRI capacity is net and includes the effect of fan motor heat.
- Page 28 XIII. MISCELLANEOUS...
- Page 30 FIGURE 23 WIRING DIAGRAM...
- Page 31 FIGURE 24 WIRING DIAGRAM...
- Page 32 FIGURE 25 WIRING DIAGRAM...
- Page 33 FIGURE 26 WIRING DIAGRAM - DDC...
- Page 34 FIGURE 27 WIRING DIAGRAM - DDC...
- Page 35 FIGURE 28 SYSTEM CHARGE CHART SYSTEM CHARGE CHART - REFRIGERANT 410A OUTDOOR 6 -TON DRY BULB Pressure Requirements - Gross Charge Check ONLY Liquid Pressure / Vapor Pressure 508 / 143 443 / 142 385 / 141 333 / 138 281 / 243 / 131 205 / 128...
- Page 36 COOLING TROUBLESHOOTING CHART WARNING DISCONNECT ALL POWER TO UNIT BEFORE SERVICING. CONTACTOR MAY BREAK ONLY ONE SIDE. FAILURE TO SHUT OFF POWER CAN CAUSE ELECTRICAL SHOCK RESULTING IN PERSONAL INJURY OR DEATH. SYMPTOM POSSIBLE CAUSE REMEDY Unit will not run •...
- Page 37 FURNACE TROUBLESHOOTING GUIDE (COMBINATION HEATING AND COOLING UNITS WITH DIRECT SPARK IGNITION) WARNING HAZARDOUS VOLTAGE DISCONNECT POWER BEFORE LINE VOLTAGE SERVICING. CONNECTIONS SERVICE MUST BE BY A TRAINED, QUALIFIED SERVICE TECHNICIAN. START SET THERMOSTAT TO CALL FOR HEAT SET FAN SWITCH TO AUTO •...
- Page 38 NOTE: IF THE SYSTEM GOES INTO LOCKOUT, WAIT 30 SECONDS AND RESET THE SYSTEM. REPLACE SENSOR MAIN BURNER FLAME SUSTAINED • CHECK FLAME SENSOR POSITION AND CONDITION • CLEAN FLAME SENSOR WITH STEEL WOOL • CHECK FLAME SENSOR WIRES AND CONNECTIONS REPLACE IGNITION CONTROL •...
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