Package Gas Electric RKNL-C/H Series RRuuuudd CCoommmmeerrcciiaall AAcchhiieevveerr®®SSeerriieess PPaacckkaaggee GGaass EElleeccttrriicc UUnniitt Unit shown with optional louvered coil protection. RKNL-C Series With ClearControl™ Nominal Sizes 6-12.5 Tons [21.1-44.0 kW] ASHRAE 90.1-2010 Compliant 6-8.5 Tons [21.1-29.9 kW] ASHRAE 90.1-2007 Compliant 10-12.5 Tons [35.2-44.0 kW] RKNL-H Series With ClearControl™ and VFD Technology Nominal Sizes 7.5-12.5 Tons [26.4-44.0 kW] ASHRAE 90.1-2010 Compliant Rely on Ruud.™ FORM NO. R22-853 Table of Contents RKNL-C/H Series TTAABBLLEE OOFF CCOONNTTEENNTTSS Unit Features & Benefits ..............................................................................3-8 Model Number Identification............................................................................9 Options........................................................................................................10 Selection Procedure......................................................................................11 General Data RKNL-C/H Series..................................................................................12-25 General Data Notes ......................................................................................26 Gross Systems Performance Data RKNL-C/H Series..................................................................................27-29 Indoor Airflow Performance RKNL-C/H Series..................................................................................30-34 Electrical Data RKNL-C/H Series..................................................................................35-38 Dimensional Data ....................................................................................39-42 Accessories ............................................................................................43-65 Mechanical Specifications ........................................................................66-72 Wiring Diagrams ......................................................................................73-82 Limited Warranty ..........................................................................................83 2 Rely on Ruud.™ Unit Features & Benefits RKNL-C/H Series RKNL-C/H STANDARD FEATURES INCLUDE: (cid:129) R-410A HFC refrigerant. (cid:129) Single point electrical and gas connections. (cid:129) Complete factory charged, wired and run tested. (cid:129) Internally sloped slide out condensate pan conforms to (cid:129) Scroll compressors with internal line break overload and ASHRAE 62 standards. high-pressure protection. (cid:129) High performance belt drive motor with variable pitch pulleys (cid:129) Single compressor on 6 ton model. and quick adjust belt system. (cid:129) Two compressors on 7.5-12.5 ton models. (cid:129) Permanently lubricated evaporator, condenser and gas heat inducer motors. (cid:129) Convertible airflow. (cid:129) Condenser motors are internally protected, totally enclosed (cid:129) TXV refrigerant metering system on each circuit. with shaft down design. (cid:129) High Pressure and Low Pressure/Loss of charge protection (cid:129) 2 inch filter standard with slide out design. standard on all models. (cid:129) Two stage gas valve and direct spark ignition. (cid:129) Solid Core liquid line filter drier on each circuit. (cid:129) Tubular heat exchange for long life and induced draft for (cid:129) Single slab, single pass designed evaporator and condenser efficiency and reliability. coils facilitate easy cleaning for maintained high efficiencies. (cid:129) Solid state furnace control with on board diagnostics. (cid:129) Cooling operation up to 125 degree F ambient. (cid:129) 24 volt control system with resettable circuit breakers. (cid:129) Foil faced insulation encapsulated throughout entire unit minimizes airborne fibers from the air stream. (cid:129) Colored and labeled wiring. (cid:129) Hinged major access door with heavy-duty gasketing, 1/4 (cid:129) Copper tube/Aluminum Fin coils (121/2ton uses turn latches and door retainers. MicroChannel condenser). (cid:129) Slide Out Indoor fan assembly for added service (cid:129) Molded compressor plug. convenience. (cid:129) Factory Installed ClearControl™, a Direct Digital Control (DDC) (cid:129) Powder Paint Finish meets ASTMB117 steel coated on each and sensors which can connect to LonWorks™or BACnet® side for maximum protection. G90 galvanized. BAS systems for remote monitoring and control. (cid:129) One piece base pan with drawn supply and return opening (cid:129) -H models with supply fan Variable Frequency Drive (VFD) for superior water management. meets ASHRAE 90.1-2010 and California Title 24. (cid:129) Forkable base rails for easy handling and lifting. Rely on Ruud.™ 3 Unit Features & Benefits RKNL-C/H Series 3 2 1 8 4 5 7 Ruud Package equipment is designed from the ground up with During development, each unit was tested to U.L. 1995, ANSI the latest features and benefits required to compete in today’s 21.47, AHRI 340-360 and other Ruud-required reliability tests. market. The clean design stands alone in the industry and is a Ruud adheres to stringent IS0 9002 quality procedures, and each testament to the quality, reliability, ease of installation and ser vice - unit bears the U.L. and AHRI certification labels located on ability that goes into each unit. Outwardly, the large Ruud the unit nameplate ( 8 ). Contractors can rest assured that when Commercial Series™label ( 1 ) identifies the brand to the customer. a Ruud package unit arrives at the job, it is ready to go with a factory charge and quality checks. The sheet-metal cabinet ( 2 ) uses nothing less than 18-gauge material for structural components with an underlying coat of Access is granted with 1/4 turn fasteners and hinged access G90. To ensure the leak-proof integrity of these units, the design panels. Access to all major compartments is from the front of the utilizes a one-piece top with a 1/8" drip lip ( 3 ), gasket-protected unit, including the filter and electrical compartment, blower com- panels and screws. The Ruud hail guard ( 4 ) (optional) is its partment, furnace section, and outdoor section. Each panel is trademark, and sets the standard for coil protection in the indus- permanently embossed with the compartment name (control/filter access, blower access and furnace access). try. Every Ruud package unit uses the toughest finish in the industry, using electro deposition baked-on enamel tested to withstand a rigorous 1000-hour salt spray test, per ASTM B117. Electrical and filter compartment access is through a large hinged-access panel. The unit charging chart is located on the inside of the electrical and filter compartment door. Electrical Anything built to last must start with the right foundation. In this wiring diagrams are found on the control box cover, which allows case, the foundation is 14-gauge, commercial-grade, full-perime - contractors to move them to more readable locations. To the right ter base rails ( 5 ), which integrate fork slots and rigging holes to of the control box the model and serial number can be found. save set-up time on the job site. The base pan is stamped, which Having this information on the inside will assure model identifica- forms a 1-1/8" flange around the supply and return opening and tion for the life of the product. The production line quality test has eliminated the worry of water entering the conditioned space assurance label is also placed ( 6 ). The drainpan ( 7 ) is made of material that resists the in this location ( 9 ). The two- growth of harmful bacteria and is sloped for the latest IAQ bene- fits. Furthermore, the drain pan slides out for easy cleaning. The inch throwaway filters (10) are easily removed on a tracked insulation has been placed on the underside of the basepan, system for easy replacement. removing areas that would allow for potential moisture accumula- 9 tion, which can facilitate growth of harmful bacteria. All insulation is secured with both adhesive and mechanical fasteners, and all edges are hidden. 6 6 10 4 Rely on Ruud.™ Unit Features & Benefits RKNL-C/H Series 10 7 The RKNL-C/H is compatible with a third party building manage- Inside the control box (11), each electri- ment system that supports the BACnet Application Specific cal component is clearly identified with Controller device profile, with the use of a field installed BACnet a label that matches the component to Communication Module. The BACnet Communication Module the wire diagram for ease of trouble plugs onto the unit RTU-C controller and allows communication shooting. All wiring is numbered on between the RTU-C and the BACnet MSTP network. A zone each end of the termination and color- sensor, a BACnet network zone sensor, a BACnet thermostat or coded to match the wiring diagram. The DDC controller may be used to send the zone temperature or integrated furnace control, used to thermostat demands to the RTU-C. The BACnet Communication control furnace operation, incorporates Module is compatible with MSTP EIA-485 daisy chain networks a flashing LED troubleshooting device. communicating at 38.4 bps. It is compatible with twisted pair, Flash codes are clearly outlined on the shielded cables. unit wiring diagram. The control trans- former has a low voltage circuit breaker that trips if a low voltage electrical short The RKNL-C/H is compatible with a third party building manage- occurs. There is a blower contactor 11 ment system that supports the LonMark Space Comfort Con- and compressor contactor for each troller (SCC) functional profile or LonMark Discharge Air Controller compressor. (DAC) functional profile. This is accomplished with a field installed LonMark communication module. The LonMark Communication Module plugs onto the RTU-C controller and allows communica- As part of the ClearControl™system which allows real time tion between the RTU-C and a LonWorks Network. A zone sen- monitoring and communication between rooftop units, the sor, a LonTalk network zone sensor, or a LonTalk thermostat or RKNL-C/H Package Gas Electric Unit has a Rooftop Unit Con- DDC controller may be used to send the zone temperature or troller (RTU-C) factory mounted and wired in the 12 thermostat demands to the RTU-C. The LonMark Communication Module utilizes an FTT-10A free topology transceiver communi- control panel. The RTU-C is a cating at 78.8 kbps. It is compatible with Echelon qualified solid-state microprocessor- twisted pair cable, Belden 8471 or NEMA Level 4 cables. The based control board that Module can communicate up to 1640 ft. with no repeater. The provides flexible control and LonWorks limit of 64 nodes per segment applies to this device. extensive diagnostics for all unit functions.The RTU-C through proportional/Inte- The RKNL-C/H is compatible with a programmable 24 volt ther- gral control algorithms per- mostat. Connections are made via conventional thermostat screw form specific unit functions terminals. Extensive unit status and diagnostics are displayed on that govern unit operation in response to: zone conditions, sys- the LCD screen of the RTU-C. tem temperatures, system pressures, ambient conditions and electrical inputs. The RTU-C features a 16 x 2 character LCD The RKNL-C/H is compatible with a zone sensor and mechanical display and a five-button keypad for local configuration and or solid state time clock connected to the RTU-C. Extensive unit direct diagnosis of the system (12). New features include a status and diagnostics are displayed on the LCD screen of the clogged filter switch (CFS), fan proving switch (FPS), return air RTU-C. temperature sensor (RAT), discharge air temperature sensor (DAT) and outdoor air temperature sensor (OAT). Freeze sensors A factory or field installed Comfort Alert®module is available for (FS) are used in place of freezestats to allow measurement of power phase-monitoring protection and additional compressor refrigerant suction line temperatures. The RKNL-C/H Package diagnostics. The alarms can be displayed on the RTU-C display, Gas/Electric with the RTU-C is specifically designed to be through the (BAS) network, or connected to the “L-Terminal” of a applied in four distinct applications: thermostat for notification. Rely on Ruud.™ 5 Unit Features & Benefits RKNL-C/H Series -H models with factory installed The blower compartment is to the right of the gauge ports and supply fan Variable Frequency Drive can be accessed by 1/4 turn fastener. To allow easy maintenance (VFD) (13) optimizes energy usage 13 of the blower assembly, the entire assembly easily slides out by year round by providing a lower removing two 3/8" screws from the blower retention bracket. The speed for first stage cooling opera- adjustable motor pulley (16) can easily be adjusted by loosening tion improving IEER’s over the con- the bolts on either side of the motor mount. Removing the bolts ventional constant fan system. Fur- allows for easy removal of the blower pulley by pushing the thermore, operating in the constant blower assembly up to loosen the belt. Once the belt is removed, fan mode at the reduced speed can the motor sheave can be adjusted to the desired number of use as little as 1/5thof the energy of turns, ranging from 0 to 6 turns open. Where the demands for the a conventional constant fan system. job require high static, Ruud has high-static drives available that Also, by operating at a lower speed deliver nominal airflow up to 2" of static. By referring to the air- on first stage cooling up to 126% flow performance tables listed in the installation instructions, more moisture is removed improving comfort during low load proper static pressure and CFM requirements can be dialed in. operation. The VFD supply fan factory option meet’s California The scroll housing (17) and blower scroll provide quiet and effi- Title 24 and ASHRAE 90.1-2010 requirements for multi blower cient airflow. The blower sheave is secured by an “H” bushing speed control. VFD also ramps up to the desired speed reduc- which firmly ing stress on the supply fan components and reducing the noise secures the pulley from sudden inrush of air. Because the airflow is cut in half to the blower during first stage cooling and constant fan operation, noise is shaft for years of much less during these modes of operation. trouble-free oper- ation. The “H” 17 For added convenience in the field, a bushing allows for factory-installed convenience outlet easy removal of and disconnect (14) are available. Low the blower pulley and High voltage can enter either from from the shaft, as the side or through the base. Low-volt- opposed to the age connections are made through the use of a set low-voltage terminal strip. For ease of screw, which can access, the U.L.-required low voltage score the shaft, barrier can be temporarily removed creating burrs that 16 for low-voltage termination and then make blower-pul- reinstalled. The high-voltage connec- ley removal difficult. 14 tion is terminated at the number 1 compressor contactor. The suggested mounting for the field-installed disconnect is on the exterior side of the electrical control box. To the right of the electrical and filter compartment are the exter- nally mounted gauge ports, which are permanently identified by embossed wording that clearly identi- fies the compressor circuit, high pres- sure connection and low pressure connection (15). With the gauge ports 15 mounted externally, an accurate diag- nostic of system operation can be performed quickly and easily. Brass caps on the schrader fitting assure that the gauge parts are leak proof. 6 Rely on Ruud.™ Unit Features & Benefits RKNL-C/H Series Also inside the blower compart- 29 29 ment is the low-ambient control (18), low-pressure switch (19), 23 high-pressure switch (20)and freeze sensor (21).The low- 26 ambient control allows for opera- tion of the compressor down to 0 23 30 30 degrees ambient temperature by cycling the outdoor fans on high 19 24 pressure. The high-pressure 20 switch will shut off the compres- 28 27 sors if pressures in excess of 610 PSIG are detected, as may occur The furnace compartment contains the latest furnace technology if the outdoor fan motor fails. The on the market. The draft inducers (23)draw the flame from the low-pressure switch shuts off the 18 Ruud exclusive in-shot burners(24)into the aluminized tubular compressors if low pressure is heat exchanger (25) for clean, efficient gas heat. Stainless steel detected due to loss of charge. heat exchangers can be factory installed for those applications The freeze sensor protects the that have high fresh-air requirements, or applications in corrosive compressor if the evapora tor coil environments. Each furnace is equipment with a two-stage gas gets too cold (below freezing) valve (26), which provides two stages of gas heat input. The first due to low airflow and allows stage operates at 50% of the second stage (full fire). 81% steady monitoring of the suction line 21 state efficiency is maintained on both first and second stage by temperature on the controller staging the multiple inducers to optimize the combustion airflow display. Each factory-installed and maintain a near stoichiometric burn at each stage. option is brazed into the appro- priate high or low side and wired The direct spark igniter (27)assures reliable ignition in the most appropriately. Use of polarized adverse conditions. This is coupled with remote flame sense (28) plugs and schrader fittings allow to assure that the flame has carried across the entire length of the for easy field installation. burner assembly. Gas supply can be routed from the side or up through the base. Inside the blower compartment the interlaced evaporator can also be viewed. The evaporator uses enhanced fin technology for Each furnace has the following safety devices to assure consis- maximum heat transfer. The TXV metering device assures even tent and reliable operation after ignition: distribution of refrigerant throughout the evaporator. (Note: the (cid:129)Pressures switches (29) to assure adequate combustion airflow single stage 6 ton utilizes an orifice). before ignition. (cid:129)Rollout switches (30) to assure no obstruction or cracks in the Wiring throughout the unit is neatly bundled and routed. Where heat exchanger. wire harnesses go through the condenser bulkhead or blower (cid:129)A limit device that protects the furnace from over-temperature deck, a molded wire harness assembly (22) provides an air-tight problems. and water-tight seal, and provides strain relief. Care is also taken to tuck raw edges of insula- tion behind sheet metal to improve indoor air quality. 25 22 24 Rely on Ruud.™ 7 Unit Features & Benefits RKNL-C/H Series The compressor Each unit is designed compartment for both downflow or houses the heart- horizontal applications beat of the unit. The (36) for job configura- scroll compressor tion flexibility. The (31) is known for its 33 34 return air compartment 36 37 long life, and for can also contain an reliable, quiet, and economizer (37). efficient operation. Three models exist, two for The suction and downflow applications, and one discharge lines are for horizontal applications (a downflow designed with economizer with factory installed smoke shock loops (32) to detector in the return section is available. Each unit absorb the strain is pre-wired for the economizer to allow quick plug-in installation. and stress that the The economizer is also available as a factory-installed option. starting torque, The economizer, which provides free cooling when outdoor steady state opera- conditions are suitable and also provides fresh air to meet local tion, and shut down 35 requirements, comes standard with single enthalpy controls. The cycle impose on the controls can be upgraded to dual enthalpy easily in the field. The refrigerant tubing. direct drive actuator combined with gear drive dampers has 31 Each compressor eliminated the need for linkage adjustment in the field. The and circuit is inde- economizer control has a minimum position setpoint, an pendent for built-in 32 outdoor-air setpoint, a mix- redundancy, and air setpoint, and a CO2 each circuit is clearly marked throughout the system. Each unit setpoint. Barometric relief is has two stages of efficient cooling operation, first stage is standard on all economizers. approximately 50% of second stage. (072 single stage) Power Exhaust (37) is easily field-installed. The power Each unit comes standard with filter dryer 33. The condenser fan exhaust is housed in 37 motor (34) can easily be accessed and maintained through the the barometric relief top. The polarized plug connection allows the motor to be opening and is easily changed quickly and eliminates the need to snake wires through slipped in with a plug- the unit. in assembly.The wire harness to the econo- mizer also has accom- The outdoor coil uses the latest enhanced fin design (35) for the modations for a smoke detector. most effective method of heat transfer. The outdoor coil is pro- tected by optional* louvered panels, which allow unobstructed airflow while protecting the unit from both Mother Nature and The damper minimum position, actual damper position, power vandalism. exhaust on/off setpoint, mixed air temperature limit setpoint and Demand Controlled Ventilation (DCV) setpoint can be read and adjusted at the unit controller display or remotely through a network connection. The Space CO2level, mixed air temperature, and Economizer Status (Free Cooling Available, Single or Dual Enthalpy) can be read at the unit controller display or remotely through a network connection. Economizer Faults will trigger a network Alarm and can be read at the unit controller display or remotely through a network connection. 38 The Ruud roofcurb (38) is made for toolless assembly at the jobsite by engaging a pin into the hinged corners of adja- cent curb sides, which makes the assembly process quick and easy. 8 Rely on Ruud.™ Model Number Identification RKNL-C/H Series R K N L — C 090 C L 15 E X X X Economizer Option (See Next Page) Factory Installed Options (See Next Page) Ignition System E = Electric Heating Capacity (MBH) 15 = 150,000 [44.0] 22 = 225,000 [65.9] 25 = 252,000 [73.9] Drive Package L= Belt Drive M= Belt Drive—High Static N= Belt Drive—Field Installed R= VFD Belt Drive S= VFD Belt Drive High Static T= VFD Belt Drive High Static (-H090 Only) Electrical Designation C= 208-230 V, 3 PH, 60 Hz D= 460 V, 3 PH, 60 Hz Y= 575 V, 3 PH, 60 Hz Cooling Capacity (BTUH) [kW] 073 = 72,000 [21.10] (-C Models only) 090 = 90,000 [26.38] 102 = 102,000 [29.89] 120 = 120,000 [35.17] 151 = 150,000 [43.96] Future Technical Variations C= ClearControl™ (DDC) H= ClearControl™ (DDC) with VFD Design Series L= R410A Efficiency Designation N= ASHRAE 90.1 Compliant Product Classification K= Rooftop—Commercial Tradebrand R= Ruud Packaged Gas/Electric [ ] Designates Metric Conversions Rely on Ruud.™ 9 Options RKNL-C/H Series FACTORY INSTALLED OPTION CODES FOR KNL-C/H (6 TO 12.5 TON) [21.1 TO 44.0 kW] Non-Powered Convenience Stainless Steel Low Ambient/ Option Code Hail Guard Outlet/Unfused Heat Exchanger Comfort Alert Service Disconnect AD x AJ x AH x AR x BF x BG x x JD x x JB x x x KA x x x DP x x x x NOTES: (1) High and low pressure is standard on all models. “x” indicates factory installed option. ECONOMIZER SELECTION FOR KNL-C/H (6 TO 12.5 TON) [21.1 TO 44.0 kW] DDC Single Enthalpy Economizer DDC Single Enthalpy Economizer Option Code No Economizer w/Barometric Relief w/Barometric Relief and Smoke Detector A x H x J x “x” indicates factory installed option. Instructions for Factory Installed Option(s) Selection Note: Three characters following the model number will be utilized to designate a factory-installed option or combination of options. If no factory option(s) is required, nothing follows the model number. Step 1. After a basic rooftop model is selected, choose a two-character option code from the FACTORY INSTALLED OPTION SELECTION TABLE. Proceed to Step 2. Step 2. The last option code character is utilized for factory-installed economizers. Choose a character from the FACTORY INSTALLED ECONOMIZER SELECTION TABLE. Examples: RKNL-C120CL22E ............................this unit has no factory installed options. RKNL-C120CL22EBGA ....................this unit is equipped withhail guard and stainless steel heat exchanger. RKNL-C120CL22EAHA......................this unit is equipped with a non-powered convenience outlet and unfused service disconnect. RKNL-C120CL22EAHH ....................this unit is equipped as above and includes an Economizer with single enthalpy sensor and with barometric relief. RKNL-C120CL22EAAH......................this unit is equipped with an Economizer with single enthalpy sensor and Barometric Relief. [ ] Designates Metric Conversions 10 Rely on Ruud.™