for MODEL KSU MAKE-UP AIR UNITS

Transcription

1 Part # Installation, Operation and Maintenance Instructions for MODEL KSU MKE-UP IR UNITS Installation w/fan Pack Extension Down last Discharge Horizontal Discharge...6 Electrical Instructions...7 Table of Contents System Startup...8 Trouble Shooting...9 Maintenance...10 Dimensions and Weights...11 Documentation/Warranty...12 WRNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment. This manual is the property of the owner, and is required for future maintenance. Please leave it with the owner when you complete the job. This IOM is for installation, operation, and maintenance of a KSU unit. For information on installation and maintenance of heating or cooling options reference the following manuals: Direct Gas (Part # ) Evaporative Cooling (Part # ) Steam, Hot Water, DX and Chilled Water Coils, and Electric Heat (Part # ) GREENHECK P.O. OX 410 SCHOFIELD, WISCONSIN PH March 2000

2 Installation with Fan Package Extension efore beginning this installation: When locating this unit, make sure that there is room to access the unit from all sides. The inlet must be located at least 10 feet away from any exhaust vents. If this unit is direct fired gas without insulation, the clearance tolerance to combustibles is 6 on all sides, top, and bottom. D Exhaust Duct C Curb D Roof Opening Supply Duct E /2 Step 1 Roof Opening Determine the center of the exhaust and supply duct roof openings. The chart below shows the maximum recommended roof opening dimensions. These sizes can be smaller based on codes and ductwork sizes. Equipment Housing Size #1 #2 #3 - Max Roof Open. 25" 35" 47" - Max. Roof Open. 61" 83" 105" C - to of ducts 36" 48" 58" D - Duct to Edge of Open /2" 17 1 /2" 23 1 /2" Supply Duct to E - Equip /2" 81 1 /2" 88 1 /2" Roof Curb Metal Cover Step 2 Install Roof Curb and Equipment Center curb over roof openings and place on the roof. Level the curb and shim if necessary. ttach curb to roof and flash in place. To install equipment support, refer to the chart in step 1 for dimensional location based on KSU unit size. ttach to roof in the same manner as the curb, remove metal cover, flash to wooden nailer and reinstall cover. 1" Inside Flange Exhaust Supply Equipment Note: Equipment support height = Curb Height + 4. Step 3 Install Curb Extension Install curb extension over curb, use wood screws to lag in place. Prepunched holes are provided. Locate extension so the tall, louvered side is over the exhaust opening, as shown in illustration. Exhaust Ductwork by Others Supply Ductwork by Others Recommended Supply Ductwork Sizes Straight lower Duct Duct Size Size Length x x 13 37" x 14 47" x 16 54" x 20 68" x 24 81" x 26 96" Step 4 Install Ductwork Exhaust: Exhaust ductwork must be built in accordance with NFP 96 and any local codes. Ductwork terminating at the fan should be square in shape or of smooth transition so as not to to affect the fans performance. Supply: The chart at left shows the duct sizes and straight lengths recommended for optimal performance (MC Publication ). Using duct sizes less than the recommended lengths will affect fan performance. Good duct practices should be followed for the remaining ductwork. 2

3 Step 4 cont. The use of a duct adapter with the supply duct is strongly recommended to properly align the ductwork with the supply fan discharge. The duct adapter is only a guide and is not intended to be used as support for the ductwork. Exhaust Duct Installed Sealant Supply Duct with Duct dapter Installed Step 5 pply Sealant efore installing fans, apply a sealant around the perimeter of the exhaust and supply duct adapter to isolate the fan and minimize vibration. Model CUE Exhaust Fan Step 6 Install Exhaust Fan Install CUE exhaust fan on curb extension. Fasten with self-tapping sheet metal screws through existing holes in curb cap. NFP 96 requires the exhaust fan be hinged. Greenheck offers an optional hinge kit with restraining cables and a grease trap with drain connection. Install these options at this time. NOTE: Installing the exhaust fan prior to the supply unit will allow for easier installation of options. Lifting Lugs (4 places) Step 7 Install Supply Unit Use a crane and a spreader bar hooked to the factory lifting lugs (as shown in the diagram) to lift and center the KSU unit on the curb and equipment support. Use selftapping sheet metal screws to fasten unit to the curb and equipment support through holes provided. Electrical, coil, and/or gas connections can be made at this time. Use caution to avoid damaging exhaust fan when installing supply unit. Model KSU Supply Unit Exhaust Fan Electrical Cable Complete Installation Illustration shows the complete wired installation. Note that the electrical power cable for the exhaust fan is routed through the side breather tube. The cable should be of sufficient length to allow the fan to hinge open to the point where the restraining cables support the fan. 3

4 Installation with Down Discharge efore beginning this installation: When locating this unit, make sure that there is room to access the unit from all sides. The inlet must be located at least 10 feet away from any exhaust vents. If this unit is direct fired gas without insulation, it has a 6 clearance tolerance to combustibles on all sides, top, and bottom. For Installations using square curb and equipment support: Square Curb Roof Opening /2 Step 1 Roof Opening Determine the center of the supply duct roof opening. The chart below shows the maximum recommended roof opening dimensions. These sizes can be smaller based on codes and ductwork sizes. Housing Size #1 #2 #3 - Max Roof Open. Sq. 25" 35" 47" Supply Duct to - Equip /2" 81 1 /2" 88 1 /2" Rectangular Curb C* For Installations using rectangular curb: Roof Opening /2 /2 C* C- Determine equal dimension for these 3 locations (varies per curb size) Supply Ductwork by Others Ductwork with duct adapter installed Sealant /2 Equipment C* Recommended Supply Ductwork Sizes Straight lower Duct Duct Size Size Length x x 13 37" x 14 47" x 16 54" x 20 68" x 24 81" x 26 96" Step 2 Install Roof Curb and Equipment For square curbs, center curb over roof opening as shown in first installation diagram at left. For rectangular curbs, center curb on 3 sides of roof opening, as shown in second installation diagram, by determining C dimension (varies per unit/curb size). For either installation, level the curb and shim if necessary. ttach curb to roof and flash in place. If equipment support is needed, refer to chart in step 1 for dimensional location based on KSU unit size. ttach to roof in the same manner as the curb. Remove metal cover, flash to wooden nailer and reinstall cover (see pg. 2). Step 3 Install Ductwork The chart at left shows the duct sizes and straight lengths recommended for optimal performance (MC Publication ). Using duct sizes less than the recommended lengths will affect fan performance. Good duct practices should be followed for the remaining ductwork. The use of a duct adapter with the supply duct is strongly recommended to properly align the ductwork with the supply fan discharge. The duct adapter is only a guide and is not intended to be used as support for the ductwork. Step 4 pply Sealant efore installing fan, apply a sealant around the perimeter of the supply duct adapter to isolate the fan and minimize vibration. 4

5 Step 5 Install Supply Unit Use a crane and a spreader bar hooked to the factory lifting lugs (as shown in the diagram) to lift and center the KSU unit on the curb and equipment support. Use selftapping sheet metal screws to fasten unit to the curb and equipment support through holes provided. Electrical, coil, and/or gas connections can be made at this time. Lifting Lugs (4 places) Supply Unit Complete Installation Illustration shows the complete installation of a downblast KSU. 5

6 Installation with Horizontal Discharge efore beginning this installation: When locating this unit, make sure that there is room to access the unit from all sides. The inlet must be located at least 10 feet away from any exhaust vents. If this unit is direct fired gas without insulation, it has a 6 clearance tolerance to combustibles on all sides, top, and bottom. Step 1 Mounting the Unit Unit can be mounted on a curb with an equipment support (fig.1) or on two equipment supports (figs. 2&5). Unit can be mounted hanging (fig. 6), inline as part of an air handling system, or base mounted. Mounting hardware to be provided by others. (fig.1) Equipment (fig.2) Curb Housing Size #1 #2 #3 Curb to - Equip. CL 76 1 /2" 81 1 /2" 88 1 /2" Equipment Equipment Step 2 ttach Ductwork to Unit Discharge Chart and drawing (fig.3) below shows opening size (ID) and location for a discharge collar. lso included is the recommended straight duct lengths for optimal performance. Greenheck recommends attaching ductwork to collar using a rubber duct section at the unit to eliminate vibration. Step 3 ttach Ductwork to Unit Intake Chart and drawing (fig.4) below shows dimensions for supply opening (ID). ttach ductwork to perimeter flange using a rubber duct section at the unit to eliminate vibration. Design the remaining ductwork for minimal losses to allow the unit to operate properly. Duct Size/Location and Intake Dimensions: Housing lower Straight C D E F Size Size Duct Length* / / / / / / / *MC recommended minimum straight duct lengths for optimum performance Typical Installations D Discharge Collar Dimensions (fig.3) C Curb Height E Intake Opening Dimensions (fig.4) F Curb H DISCHRGE DISCHRGE INTKE INTKE (fig.5) Roof mounted with weatherhood, mounted on two equipment supports. Ductwork is attached to discharge collar with rubber boot transition. (fig.6) Shown as an indoor hanging installation with intake and discharge ductwork installed. (Hanging support structure for unit is by others). 6

7 Electrical Instructions efore connecting power to the unit, read and understand the following instructions and wiring diagrams. Complete wiring diagrams are attached inside the door(s) of the unit. ll wiring should be done in accordance with the National Electrical Code NSI/NFP-70 latest edition and any local codes that may apply. In Canada, wiring should be done in accordance with the Canadian Electrical Code. The equipment must be properly grounded. Electrical Knockouts CUTION! For direct gas units: If any of the original wire must be replaced, the replacement wire must have a temperature rating of at least 105 C, except for energy cutoff or sensor lead wire which must be 150 C. DNGER! High voltage electrical input is needed for this equipment. This work should be performed by a qualified electrician. Unit Name Plate Control Center Door CUE Exhaust Fan Field Wiring to CUE NOTE: ny wiring running through the KSU unit in the airstream must be protected by flexible metal conduit, metal clad cable or raceways. Sequence for wiring KSU unit: For units without control centers: The motor nameplate is to be used for determining the voltage and amperage required by the unit. For units with control centers: 1. The units nameplate states the voltage and total amperage required. The main feeder supplying power to the unit should be sized for the labels voltage and amperage. 2. The main power line should be connected to the disconnect switch. Make sure that the disconnect lugs are securely tightened. 3. Connect control panel wiring to terminal strip in the control center. Greenheck s standard control voltage is 120/60/1. 4. Wire any remote temperature selectors (optional) at this time. These wires should be shielded cable if they are to be run with other power wires. 5. When an optional convenience outlet is provided, a separate power supply must be provided to the receptacle. This circuit must be on a ground fault breaker. 6. If an electric heater is supplied with the unit, a separate power source is required for the heater. CUTION ny wiring deviations may result in personal injury or property damage. Greenheck is not responsible for any damage to, or failure of the KSU unit caused by incorrect final wiring. 7

8 System Startup For proper unit function and safety, follow everything in this startup procedure in the order presented. This to be done after the electrical and gas connections are complete. Special Tools Required Voltage meter Incline manometer or equivalent (Direct Gas Units) Tachometer Thermometer (Direct Gas Units) mperage meter 1. Check Voltage efore starting the unit compare the supplied voltage with the units nameplate voltage and the motor voltage. 2. Check lower Rotation If the blower is rotating in the wrong direction, the unit will move some air but not perform properly. To check the rotation, open the blower access door and run the blower momentarily to determine the rotation. To reverse the rotation, turn the power off and use the following procedure: For single phase units, rewire the motor per the instructions on the motor. For three phase units, interchange any two power leads. This can be done at the motor starter. 3. ir Volume Check and Measurement long with the building balance, the units air volume (cfm) should be measured and compared with its rated air volume. This unit is flexible for varying air volume, but the actual air volume should be known for making final adjustments. The most accurate way to measure the air volume is by using the pitot traverse method in the ductwork away from the blower. Other methods can be used but should be proven and accurate. To adjust the air volume, change the fan rpm or the system losses. See Trouble Shooting section in this guide. 4. Measure Motor Voltage, mperage and Fan rpm ll access doors must be installed except the control center door and direct gas controls door. Measure and record the input voltage and motor amperage(s). To measure the fan rpm, the blower door will need to be removed. Minimize measurement time because the motor may over amp with the door removed. Compare measured amps to the motor nameplate full load amps and correct if over amping. See the Trouble Shooting section in this guide. 5. Settings for Optional Components Optional Freeze Protection: This shuts down the blower if the output temperature is below the set point. timer allows the blower to operate during startup. This will reset when turned off. Typical settings are: Discharge temperature = 45 F Timer = 5 minutes lower Housing Optional 2 Hour Time Delay: This allows the unit to operate for up to 2 hours after the control panel switch has been turned off. The timer is adjustable. Rotation 8

9 Trouble Shooting The following is a cause and correction list for common problems with these units. lso included in the unit owners packet are the Maxitrol (or Modusnap) Systems owner s manual plus the Flame Safeguard owner s manual. The sequence of operation should be used to help determine where the problems could be when trouble shooting the unit. lower Unit Symptom Possible Cause Corrective ction lower fails lown fuse or open circuit breaker Replace fuse or reset circuit breaker and to operate check amps roken fan belt Replace Defective motor or capacitor Replace Motor starter overloaded Reset starter and check amps Motor over amps Cfm too high Check cfm and adjust drives if needed Static pressures are higher or lower If higher, ductwork should be improved than design If lower, fan rpm should be lower lower rotation is incorrect Check rotation and correct Motor voltage incorrect Check motor nameplate and supplied voltage Motor horsepower too low See specifications and catalog for fan curves to determine if horsepower is sufficient Shorted windings in motor Replace motor Insufficient airflow Unit damper not fully open djust damper linkage or replace damper motor System static pressure too high Improve ductwork to eliminate losses using good duct practices lower speed too low Check for correct drives and rpm with catalog data Dampers or registers closed Open and adjust Dirty or clogged filters Clean or replace Leaks in ductwork Repair Elbows, or other obstructions may restrict fan outlet Correct or improve ductwork elt slippage djust belt tension Too much airflow lower fan speed too high Check for correct fan rpm Filter(s) not in place Install filters Insufficient static pressure (SP) Induce SP into system ductwork (airflow resistance) Excessive noise Wheel rubbing on housing Center wheel or vibration Loose wheel on shaft Tighten wheel setscrew Loose motor or blower sheave Tighten sheave setscrew elts too loose djust belt tension after 24 hours of operation elts too tight Loosen to maintain 3/8 deflection per ft. of span between sheaves Worn belt Replace Motor base or blower loose Tighten mountings bolts Worn bearings Replace earing and drive alignment Realign Motor out of balance Replace Wheel out of balance Replace or rebalance Sheaves eccentric or out of balance Replace or rebalance ccumulation of material on wheel Clean wheel and housing 9

10 Maintenance Greenheck recommends these procedures to insure trouble free operation of this unit. It is especially important to maintain gas heater units for clean and efficient operation. Most unit failures can be attributed to poor setup or poor maintenance. record of maintenance performed on this unit should be kept. This information will provide essential information if problems are encountered. section at the back of this manual is provided for recording the units maintenance history. CUTION: When performing any maintenance on this unit be sure that the power is disconnected and cannot be accidently turned on. The control center disconnect can be locked in the off position. 2 weeks after startup Check belt tension - elts tend to stretch after a period of time. They should be periodically checked for wear and tightness. pproximately 3 /8" of deflection per ft. of span between sheaves is standard for belt tightness. When replacing belts, use the same type as supplied with the unit. Matched belts should always be used on units with multigroove pulleys. Rotation lower Housing Too Tight Too Loose Motor elt Tension djustment Screw Replacement of belts should be accomplished by loosening the tensioning device to the point where the belts can be removed by hand. Do not force belts on or off as this may cause breakage of cords leading to premature belt failure. elts should be adjusted as above. NOTE: For motors of 1 HP or less a smaller bracket is used to attach to blower, Every 3 Months The filter in the unit should be inspected at least every 3 months. Depending on the environment, filters could require changing or cleaning more or less often. The filters can be slid out of either side of the unit. If washable filters are installed, they can be washed in warm soapy water. n adhesive spray can be applied to increase filter efficiency. If disposable filters are installed, check by holding up to a light source. If light cannot pass through the filter, it should be replaced. Replacement filters should be of the same manufacturer and size. When reinstalling filters be sure to install with the airflow in the correct direction indicated on the filter and with any factory spacers that came with the unit. Yearly ll bearings are factory lubricated and require no further lubrication under normal use. Normal use being considered -20 F to 180 F and in a relatively clean environment. Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited to the exterior surfaces only. Removing dust and grease buildup on motor housing assures proper motor cooling. Greasing of motors is intended only when grease fittings are provided. Many fractional motors are permanently lubricated and require no further lubrication. Motors supplied with grease fittings should be greased in accordance with manufacturer's recommendations. When motor temperature does not exceed 104 F (40 C), the grease should be replaced after 2000 hours of running time as a general rule. Wheels require very little attention when moving clean air. Occasionally oil and dust may accumulate on the wheel causing imbalance. When this occurs the wheel and housing should be cleaned to assure smooth and safe operation. Routinely check all fasteners for tightness. 10

11 ELECTRICL CONNECTION DISCONNECT SWITCH LIFTING LUGS E C Dimensions and Weights D ELEVTION VIEW CONTROL CENTER DOOR PLN VIEW Curb Height KSU SIZE C D E pprox Weight** Unit FPE FILTERS QTY 3 4* 10 SIZE 20x25 16x20 20x25 20x20 *Qty 4 of each size listed **Weight based on unit with direct fired gas unit weights will vary per heating options and blower motor combinations. C F G E D FPE Model CUE Sizes C D-Sq. E-Sq. F G ,100,120, , , , , , , Note: Dimensions are shown with an 8 Roof Curb. FPE Model: Last digit is housing size. See CUE literature for complete dimensions and weights of CUE fan. Curb Selection Chart Housing Size Rectangular Curb Square Curb Equip 1 30/ / / w/fpe 30/ W/FPE 40/ W/FPE 52/ FPE - Fan Pack Extension Curb Dimensional Chart Curb Size D W x L W x L 30/ /2 x 74 1 / /4 x 82 3 /4 40/ /2 x 84 1 / /4 x 92 3 /4 52/ /2 x 96 1 / /4 x / /2 x 28 1 / /4 x 36 3 / /2 x 38 1 / /4 x 46 3 / /2 x 50 1 / /4 x 58 3 /4 30/ /2 x 64 1 / /4 x 72 3 /4 40/ /2 x 86 1 / /4 x 94 3 /4 52/ /2 x / /4 x /4 GPNS Curbs Equipment 35 /8 D 11 /2 11 /2 3/4 3/4 Wood Nailer 8" or 12" Insulation 8" or 12" Wood Nailer 117/8 11

12 Maintenance Documentation Job Information Job Name: ddress: City: State: Zip: Phone: Fax: Contact Person: Service Organization: ddress: City: State: Zip: Phone: Fax: Work Done y: Name Plate Information Model: Volts: Hertz: Phase: mps: Mark: Supply Hp: Exhaust Hp: Serial Number: Field Start-Up Documentation ctual Voltage: Hertz: Phase: ctual mperage: lower Rotation Correct ir Volume Design CFM ctual CFM Maintenance Date Time Notes: Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date. ny units or parts which prove to be defective during the warranty period will be repaired or replaced at our option. The motor is warranted by the motor manufacturer for a period of one year. Should the motor prove defective during this period, it should be returned to an authorized motor service station. Greenheck will not be responsible for any installation or removal costs. Due to continuing research, Greenheck reserves the right to change specifications without notice. GREENHECK P.O. OX 410 SCHOFIELD, WISCONSIN PH KSU IOM FS Rev. 2 March 2000