Rheem RKKB SERIES Owner's Manual
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Rheem RKKB SERIES Owner's Manual

Package gas / electric roof top units
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P
G
E
R
U
ACKAGE
AS /
LECTRIC
OOFTOP
NITS
FORM NO. R11-836 REV. 3
Supersedes Form No. R11-836 Rev. 2
RKKB- STANDARD EFFICIENCY SERIES
NOMINAL SIZES 15-25 TONS [52.8-87.9 kW]
ASHRAE 90.1-1989 COMPLIANT MODELS
RKMB- HIGH EFFICIENCY SERIES
NOMINAL SIZES 15 & 20 TONS [52.8 & 70.3 kW]
ASHRAE 90.1-1999 COMPLIANT MODELS
RKNB- SUPER HIGH EFFICIENCY SERIES
NOMINAL SIZE 15 TON [52.8 kW]
ENERGYSTAR COMPLIANT MODEL

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  • Page 1 ACKAGE AS / LECTRIC OOFTOP NITS FORM NO. R11-836 REV. 3 Supersedes Form No. R11-836 Rev. 2 RKKB- STANDARD EFFICIENCY SERIES NOMINAL SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS RKMB- HIGH EFFICIENCY SERIES NOMINAL SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS RKNB- SUPER HIGH EFFICIENCY SERIES NOMINAL SIZE 15 TON [52.8 kW]...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Unit Features & Benefits ................3-6 Selection Procedure ..................7 Model Identification Options ................8-9 General Data RKKB- Series ..................10-18 RKMB- Series ..................19-24 RKNB- Series ..................25-27 General Data Notes ..................28 Performance Data RKKB- Series ..................29-30 RKMB- Series....................31 RKNB- Series ....................32 Airflow Performance RKKB- Series ..................33-34 RKMB- Series ..................33-34...

  • Page 3: Unit Features & Benefits

    ( ) identifies the brand to the customer. a Rheem package unit arrives at the job, it is ready to go with a factory charge and quality checks. Each unit also proudly dis- plays the “Made in the USA” designation.
  • Page 4 0 to 6 turns open. occurs. There is a blower contactor Where the demands for the job require high static, Rheem has and compressor contactor for each high-static drives available that deliver nominal airflow up to 2" of compressor.
  • Page 5 The freeze stat protects on the market. The draft inducers ( ) draw the flame from the the compressor if the evapora- Rheem exclusive in-shot burners ( ) into the aluminized tubular tor coil gets too cold (below heat exchanger ( ) for clean, efficient gas heat.
  • Page 6 The condenser fan motor ( ) can easily be accessed and main- The Rheem roofcurb tained by removing the protective fan grille. The polarized plug ) is made for connection allows the motor to be changed quickly and elimi- toolless assembly at nates the need to snake wires through the unit.

  • Page 7: Selection Procedure

    SELECTION PROCEDURE EXAMPLE—RKKB/RKMB/RKNB- SERIES To select an RKKB- Cooling and Heating unit to meet a job 5. CALCULATE INDOOR BLOWER BTUH HEAT EFFECT requirement, follow this procedure, with example, using data FROM MOTOR WATTS, STEP 4. supplied in this specification sheet. BTUH = 4,717 x 3.412 = 16,094 1.
  • Page 8 B = “B Series Cabinet” Efficiency Designation K = Standard Efficiency ASHRAE 90.1-1989 Compliant M = High Efficiency ASHRAE 90.1-1999 Compliant N = Super High Efficiency EnergyStar Compliant Product Classification K = Rooftop—Commercial Tradebrand R = Rheem Packaged Gas/Electric [ ] Designates Metric Conversions...
  • Page 9 OPTIONS—RKKB/RKMB/RKNB- SERIES FACTORY INSTALLED OPTION CODES FOR RKKB, RKMB & RKNB Low Ambient Unwired Convenience Outlet Stainless Steel Option Code Time Delay Heat Exchanger Unfused Services Discount Freeze Stat No Options “x” indicates factory installed option. ECONOMIZER SELECTION FOR RKKB, RKMB & RKNB Single Enthalpy Economizer No Economizer With Barometric Relief...

  • Page 10: Rkkb- Series

    GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A180CL25E A180CL35E A180CM25E A180CM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] EER/SEER 9/NA 9/NA 9/NA 9/NA Nominal CFM/ARI Rated CFM [L/s] 6000/6000 [2831/2831]...
  • Page 11 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A180DL25E A180DL35E A180DM25E A180DM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] EER/SEER 9/NA 9/NA 9/NA 9/NA Nominal CFM/ARI Rated CFM [L/s] 6000/6000 [2831/2831]...
  • Page 12 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A180YL25E A180YL35E A180YM25E A180YM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] EER/SEER 9/NA 9/NA 9/NA 9/NA Nominal CFM/ARI Rated CFM [L/s] 6000/6000 [2831/2831]...
  • Page 13 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A240CL30E A240CL40E A240CM30E A240CM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 242,000 [70.9] 242,000 [70.9] 242,000 [70.9] 242,000 [70.9] EER/SEER 8.7/NA 8.7/NA 8.7/NA 8.7/NA Nominal CFM/ARI Rated CFM [L/s] 7600/7400 [3586/3492]...
  • Page 14 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A240DL30E A240DL40E A240DM30E A240DM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 242,000 [70.9] 242,000 [70.9] 242,000 [70.9] 242,000 [70.9] EER/SEER 8.7/NA 8.7/NA 8.7/NA 8.7/NA Nominal CFM/ARI Rated CFM [L/s] 7600/7400 [3586/3492]...
  • Page 15 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A240YL30E A240YL40E A240YM30E A240YM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 242,000 [70.9] 242,000 [70.9] 242,000 [70.9] 242,000 [70.9] EER/SEER 8.7/NA 8.7/NA 8.7/NA 8.7/NA Nominal CFM/ARI Rated CFM [L/s] 7600/7400 [3586/3492]...
  • Page 16 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A300CL30E A300CL40E A300CM30E A300CM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 300,000 [87.9] 300,000 [87.9] 300,000 [87.9] 300,000 [87.9] EER/SEER 8.9/NA 8.9/NA 8.9/NA 8.9/NA Nominal CFM/ARI Rated CFM [L/s] 9400/8400 [4436/3964]...
  • Page 17 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A300DL30E A300DL40E A300DM30E A300DM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 300,000 [87.9] 300,000 [87.9] 300,000 [87.9] 300,000 [87.9] EER/SEER 8.9/NA 8.9/NA 8.9/NA 8.9/NA Nominal CFM/ARI Rated CFM [L/s] 9400/8400 [4436/3964]...
  • Page 18 GENERAL DATA—RKKB- SERIES NOM. SIZES 15-25 TONS [52.8-87.9 kW] ASHRAE 90.1-1989 COMPLIANT MODELS Model RKKB- Series A300YL30E A300YL40E A300YM30E A300YM40E Cooling Performance Gross Cooling Capacity Btu [kW] 300,000 [87.9] 300,000 [87.9] 300,000 [87.9] 300,000 [87.9] EER/SEER 8.9/NA 8.9/NA 8.9/NA 8.9/NA Nominal CFM/ARI Rated CFM [L/s] 9400/8400 [4436/3964] 9400/8400 [4436/3964]...

  • Page 19: Rkmb- Series

    GENERAL DATA—RKMB- SERIES NOM. SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS Model RKMB- Series A180CL25E A180CL35E A180CM25E A180CM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] EER/SEER 10.2/NA 10.2/NA...
  • Page 20 GENERAL DATA—RKMB- SERIES NOM. SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS Model RKMB- Series A180DL25E A180DL35E A180DM25E A180DM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] EER/SEER 10.2/NA 10.2/NA...
  • Page 21 GENERAL DATA—RKMB- SERIES NOM. SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS Model RKMB- Series A180YL25E A180YL35E A180YM25E A180YM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] 188,000 [55.1] EER/SEER 10.2/NA 10.2/NA...
  • Page 22 GENERAL DATA—RKMB- SERIES NOM. SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS Model RKMB- Series A240CL30E A240CL40E A240CM30E A240CM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] EER/SEER 9.7/NA 9.7/NA...
  • Page 23 GENERAL DATA—RKMB- SERIES NOM. SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS Model RKMB- Series A240DL30E A240DL40E A240DM30E A240DM40E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] EER/SEER 9.7/NA 9.7/NA...
  • Page 24 GENERAL DATA—RKMB- SERIES NOM. SIZES 15 & 20 TONS [52.8 & 70.3 kW] ASHRAE 90.1-1999 COMPLIANT MODELS Model RKMB- Series A240YL30E A240YL40E A240YM30E A240YM40E Cooling Performance Gross Cooling Capacity Btu [kW] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] 246,000 [72.1] EER/SEER 9.7/NA 9.7/NA 9.7/NA...

  • Page 25: Rknb- Series

    GENERAL DATA—RKNB- SERIES NOM. SIZE 15 TON [52.8 kW] ENERGYSTAR COMPLIANT MODEL Model RKNB- Series A180CL25E A180CL35E A180CM25E A180CM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] EER/SEER 11.5/NA 11.5/NA 11.5/NA 11.5/NA Nominal CFM/ARI Rated CFM [L/s] 6000/5500 [2831/2596] 6000/5500 [2831/2596]...
  • Page 26 GENERAL DATA—RKNB- SERIES NOM. SIZE 15 TON [52.8 kW] ENERGYSTAR COMPLIANT MODEL Model RKNB- Series A180DL25E A180DL35E A180DM25E A180DM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] EER/SEER 11.5/NA 11.5/NA 11.5/NA 11.5/NA Nominal CFM/ARI Rated CFM [L/s] 6000/5500 [2831/2596] 6000/5500 [2831/2596]...
  • Page 27 GENERAL DATA—RKNB- SERIES NOM. SIZE 15 TON [52.8 kW] ENERGYSTAR COMPLIANT MODEL Model RKNB- Series A180YL25E A180YL35E A180YM25E A180YM35E Cooling Performance CONTINUED Gross Cooling Capacity Btu [kW] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] 180,000 [52.7] EER/SEER 11.5/NA 11.5/NA 11.5/NA 11.5/NA Nominal CFM/ARI Rated CFM [L/s] 6000/5500 [2831/2596] 6000/5500 [2831/2596]...
  • Page 28 GENERAL DATA—RKKB/RKMB/RKNB- SERIES 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. ARI capacity is net and includes the effect of fan motor heat. Units are suitable for operation to 20% of nominal cfm.
  • Page 29 SYSTEMS PERFORMANCE—RKKB- SERIES GROSS SYSTEMS PERFORMANCE DATA—A180 ENTERING INDOOR AIR @ 80°F [26.7°C] dbE ➀ 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C] CFM [L/s] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] DR ➀...
  • Page 30 SYSTEMS PERFORMANCE—RKKB- SERIES GROSS SYSTEMS PERFORMANCE DATA—A300 ENTERING INDOOR AIR @ 80°F [26.7°C] dbE ➀ 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C] CFM [L/s] 9580 [8400] 8400 [3964] 6720 [3171] 9580 [8400] 8400 [3964] 6720 [3171] 9580 [8400] 8400 [3964] 6720 [3171] DR ➀...
  • Page 31 SYSTEMS PERFORMANCE—RKMB- SERIES GROSS SYSTEMS PERFORMANCE DATA—A180 ENTERING INDOOR AIR @ 80°F [26.7°C] dbE ➀ 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C] CFM [L/s] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] DR ➀...
  • Page 32 SYSTEMS PERFORMANCE—RKNB- SERIES GROSS SYSTEMS PERFORMANCE DATA—A180 ENTERING INDOOR AIR @ 80°F [26.7°C] dbE ➀ 71°F [21.7°C] 67°F [19.4°C] 63°F [17.2°C] CFM [L/s] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] 7200 [3398] 6000 [2831] 4800 [2265] DR ➀...
  • Page 33 AIRFLOW PERFORMANCE—RKKB/RKMB/RKNB-...
  • Page 34 AIRFLOW PERFORMANCE—RKKB/RKMB-...
  • Page 35 ELECTRICAL DATA—RKKB- SERIES Unit Information Evaporator Fan Model No. Unit Operating Minimum Circuit Minimum Overcurrent Maximum Overcurrent Amps Amps RKKB- Volts Phase Voltage Range Ampacity Protection Device Size Protection Device Size (FLA) (LRA) A180CL25E 187-253 74/74 80/80 80/80 208/230 11.5 74.5 A180CL35E 187-253...
  • Page 36 ELECTRICAL DATA—RKKB- SERIES Compressor Motor Condenser Motor Model No. Amps Amps Amps Amps RKKB- Volts Phase Volts Phase (RLA) (LRA) (FLA) (LRA) A180CL25E 200/230 3 1/2 3450 12.4/12.4 88/88 208/230 A180CL35E 200/230 3 1/2 3450 12.4/12.4 88/88 208/230 A180CM25E 200/230 3 1/2 3450 12.4/12.4...
  • Page 37 ELECTRICAL DATA—RKMB- SERIES Unit Information Evaporator Fan Model No. Unit Operating Minimum Circuit Minimum Overcurrent Maximum Overcurrent Amps Amps RKMB- Volts Phase Voltage Range Ampacity Protection Device Size Protection Device Size (FLA) (LRA) A180CL25E 187-253 74/74 80/80 80/80 208/230 11.5 74.5 A180CL35E 187-253...
  • Page 38 ELECTRICAL DATA—RKMB- SERIES Compressor Motor Condenser Motor Model No. Amps Amps Amps Amps RKMB- Volts Phase Volts Phase (RLA) (LRA) (FLA) (LRA) A180CL25E 200/240 3 1/2 3450 12.4/12.4 88/88 208/230 A180CL35E 200/240 3 1/2 3450 12.4/12.4 88/88 208/230 A180CM25E 200/240 3 1/2 3450 12.4/12.4...
  • Page 39 ELECTRICAL DATA—RKNB- SERIES Unit Information Evaporator Fan Model No. Unit Operating Minimum Circuit Minimum Overcurrent Maximum Overcurrent Amps Amps RKNB- Volts Phase Voltage Range Ampacity Protection Device Size Protection Device Size (FLA) (LRA) A180CL25E 187-253 72/72 80/80 90/90 208/230 11.5 74.5 A180CL35E 187-253...
  • Page 40 ELECTRICAL DATA—RKNB- SERIES Compressor Motor Condenser Motor Model No. Amps Amps Amps Amps RKNB- Volts Phase Volts Phase (RLA) (LRA) (FLA) (LRA) A180CL25E 200/240 6 3/4 3450 22.4/22.4 164/164 208/230 A180CL35E 200/240 6 3/4 3450 22.4/22.4 164/164 208/230 A180CM25E 200/240 6 3/4 3450 22.4/22.4...
  • Page 41 UNIT DIMENSIONS—RKKB/RKMB/RKNB- SERIES GAS HEAT / ELECTRIC COOLING PACKAGE Illustration ST-A0886-06 BOTTOM VIEW Illustration [ ] Designates Metric Conversions ST-A0886-02...
  • Page 42 UNIT DIMENSIONS—RKKB/RKMB/RKNB- SERIES GAS HEAT / ELECTRIC COOLING PACKAGE SUPPLY AND RETURN DIMENSIONS FOR HORIZONTAL APPLICATIONS Illustration ST-A0886-05 DUCT SIDE VIEW SUPPLY AND RETURN DIMENSIONS FOR DOWNFLOW APPLICATIONS [60.3 mm] [533.4 mm] [508 mm] TYP. [968.4 mm] [112.7 mm] [52.4 mm] [146.1 mm] [3589.3 mm] SUPPLY AIR...
  • Page 43 UNIT DIMENSIONS—RKKB/RKMB/RKNB- SERIES UNIT DIMENSIONS GAS HEAT / ELECTRIC COOLING PACKAGE Illustration ST-A0886-03 Illustration ST-A0886-12 WEIGHTS Accessory Shipping—lbs [kg] Operating—lbs [kg] Capacity Tons [kW] Corner Weights by Percentage Economizer—Downflow 155 [70.31] 146 [66.22] Economizer—Horizontal 165 [74.80] 155 [70.31] 15-25 [52.8-87.9] Fresh Air Damper (Manual) 51 [23.13] 40 [18.14]...
  • Page 44 UNIT DIMENSIONS—RKKB/RKMB/RKNB- SERIES SLAB INSTALLATION Illustration ST-A0886-09 CLEARANCES The following minimum clearances are recommended for proper unit performance and serviceability. Recommended Location Clearance In. [mm] 48 [1219] A - Front 18 [457] B - Condenser Coil 18 [457] C - Duct Side *18 [457] D - Evaporator End 60 [1524]...

  • Page 45: Accessories

    ACCESSORIES FIELD INSTALLED ACCESSORY EQUIPMENT Shipping Installed Factory Model Accessory Weight Weight Installation Number Lbs. [kg] Lbs. [kg] Available? Thermostat See Thermostat Specification Sheet (T11-001) Economizer w/Single Enthalpy RXRD-MFCM3 155 [70.3] 146 [66.2] Dual Enthalpy Kit RXRX-AV02 1 [.5] 1 [.5] Horizontal Economizer w/Single Enthalpy RXRD-NFCM3 155 [70.3]...
  • Page 46 ACCESSORIES ECONOMIZERS Use to Select Factory Installed Options Only RXRD-MFCM3—Single Enthalpy (Outdoor) RXRX-AV02—Dual Enthalpy Upgrade Kit RXRX-AR02—Optional Wall-Mounted CO Sensor Features Honeywell Controls Available Factory Installed or Field Accessory Gear Driven Direct Drive Actuator Fully Modulating (0-100%) Low Leakage Dampers Slip-In Design for Easy Installation Plug-In Polarized 12-pin Electrical Connections Pre-Configured—No Field Adjustments Necessary...
  • Page 47 ACCESSORIES ECONOMIZER FOR HORIZONTAL DUCT INSTALLATION Field Installed Only RXRD-NFCM3—Single Enthalpy (Outdoor) RXRX-AV02—Dual Enthalpy Upgrade Kit RXRX-AR02—Wall-mounted CO Sensor Features Honeywell Controls Available as a Field Installed Accessory Only Gear Driven Direct Drive Actuator Fully Modulating (0-100%) Low Leakage Dampers Slip-In Design for Easy Installation Plug-In Polarized 12-pin Electrical Connections Pre-Configured—No Field Adjustments Necessary...
  • Page 48 ACCESSORIES POWER EXHAUST KIT FOR RXRD-MFCM3(-), RXRD-NFCM3(-) ECONOMIZERS RXRX-BFF02 (C, D, or Y*) *Voltage Code VERTICAL AIRFLOW Illustration STA1000-02 HORIZONTAL AIRFLOW Illustration STA1000-01 High Speed ➀ Low Speed Model No. Volts Phase of Fans (ea.) CFM [L/s] ➁ CFM [L/s] ➁ (ea.) (ea.) RXRX-BFF02C...
  • Page 49 ACCESSORIES FRESH AIR DAMPER MOTORIZED DAMPER KIT RXRX-ATO1 (Motor Kit for RXRF-HEA1) Illustration ST-7951-17 RXRF-HEA1 (Manual) RXRX-ATO1 (Motorized damper kit for manual fresh air damper) Illustration ST-A0889-02 [ ] Designates Metric Conversions...
  • Page 50 ACCESSORIES ROOFCURBS (Full Perimeter) TYPICAL INSTALLATION Rheem’s new roofcurb design can be utilized on Illustration ST-A0888-02 15 and 25 ton [52.8 and 87.9 kW] models. One available height (14" [356 mm]). Quick assembly corners for simple and fast assembly. 1" [25.4 mm] x 4" [102 mm] Nailer provided.
  • Page 51 ACCESSORIES ROOFCURB ADAPTER OLD MODELS OLD CURB MODEL ROOFCURB ADAPTER NEW MODEL COMMERCIAL CABINET (-)KKB, (-)KMB, (-)KNB (12.5, 15 & 20 TON) RXRK-E56 RXRX-CHCE56 (15, 20 & 25 TON) ([44, 52.8 & 70.3 kW]) ([52.8, 70.3 & 87.9 kW]) (-)RCF, (-)RGF, (-)REF Illustration [ ] Designates Metric Conversions ADS-7952-05...
  • Page 52 ACCESSORIES CONCENTRIC DIFFUSER APPLICATION Illustration ST-A0840-02 DOWNFLOW TRANSITION DRAWINGS RXMC-CG07 (15 Ton) [52.8 kW] Used with RXRN-AD80 and RXRN-AD81 Concentric Diffusers. Illustration ADS-7951-10 [ ] Designates Metric Conversions...
  • Page 53 ACCESSORIES DOWNFLOW TRANSITION DRAWINGS (Cont.) RXMC-CH08 (20 & 25 Ton) [70.3 & 87.9 kW] Used with RXRN-AD85 and RXRN-AD86 Concentric Diffusers. Illustration ADS-7951-11 [ ] Designates Metric Conversions...
  • Page 54 ACCESSORIES CONCENTRIC DIFFUSER RXRN-AD80 SERIES 15 TON [52.8 kW] FLUSH All aluminum diffuser with aluminum return air eggcrate. Built-in anti-sweat gasket. Molded fiberglass supports. Built-in hanging supports. Diffuser box constructed of sheetmetal insulated with 1" [25.4 mm] 1.5 lbs. [.7 kg] duct liner. CONCENTRIC DIFFUSER SPECIFICATIONS PART STATIC...
  • Page 55 ACCESSORIES CONCENTRIC DIFFUSER RXRN-AD81 SERIES 15 TON [52.8 kW] STEP DOWN All aluminum diffuser with aluminum return air eggcrate. Built-in anti-sweat gasket. Molded fiberglass supports. Built-in hanging supports. Diffuser box constructed of sheetmetal insulated with 1" [25.4 mm] 1.5 lbs. [.7 kg] duct liner.
  • Page 56 ACCESSORIES CONCENTRIC DIFFUSER RXRN-AD85 SERIES 20 & 25 TON [70.3 & 87.9 kW] FLUSH All aluminum diffuser with aluminum return air eggcrate. Built-in anti-sweat gasket. Molded fiberglass supports. Built-in hanging supports. Diffuser box constructed of sheetmetal insulated with 1" [25.4 mm] 1.5 lbs. [.7 kg] duct liner.
  • Page 57 ACCESSORIES CONCENTRIC DIFFUSER RXRN-AD86 SERIES 20 & 25 TON [70.3 & 87.9 kW] STEP DOWN All aluminum diffuser with aluminum return air eggcrate. Built-in anti-sweat gasket. Molded fiberglass supports. Built-in hanging supports. Diffuser box constructed of sheetmetal insulated with 1" [25.4 mm] 1.5 lbs. [.7 kg] duct liner.

  • Page 58: Mechanical Specifications

    The heating section shall have a tubular assembly includes direct drive gear driver, the indoor air section shall be insulated heat exchanger design using Rheem exclu- fully modulating 0-100 percent motor and with a cleanable foil faced, fire retardant sive burners and corrosion resistant steel...
  • Page 59 MECHANICAL SPECIFICATIONS—RKKB/RKMB/RKNB- SERIES Powered Exhaust—The field installed High Pressure Cutout—This factory or powered exhaust, available for all units, field installed option is offered for units that shall provide exhaust of return air, when do not have high pressure cutout as stan- using an economizer, to maintain better dard.
  • Page 60 WIRING SCHEMATICS—RKKB/RKMB- SERIES...
  • Page 61 WIRING SCHEMATICS—RKKB/RKMB- SERIES...
  • Page 62 WIRING SCHEMATICS—RKKB/RKMB- SERIES...
  • Page 63 WIRING SCHEMATICS—RKNB- SERIES...
  • Page 64 WIRING SCHEMATICS—RKNB- SERIES...
  • Page 65 WIRING SCHEMATICS—RKNB- SERIES...
  • Page 66 NOTES...
  • Page 67 NOTES...
  • Page 68 FROM YOUR RETAILER. GENERAL TERMS OF LIMITED WARRANTY Rheem will furnish a replacement for any part of this product which fails in normal use and service within the applicable periods stated, in accordance with the terms of the limited warranty.

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