Greenheck Fan 55 manuale d’uso

RECEIVING AND HANDLING The HRE is thoroughly inspected and test run at the factory. However, damage may occur during shipping and handling. Upon delivery, inspect the unit for both obvious and hidden damage. If damage is found, record all necessary information on the bill of lading and file a claim with the final carrier. In addition, ensure all ac[...]

2 TABLE OF CONTENTS Storage and Basic Operation .............. 2 Installation .............................. 3 Lifting ................................. 3 Unit Weights & Recommended Roof Openings ............................ 3 Roof Curb Mounting ..................... 4 Rail Mounting ........................... 5 Ductwork Connections ...........[...]

3 INSTALLATION The system design and installation should follow accepted industry practice, such as described in the ASHRAE Handbook. Adequate space should be left around the unit for piping coils and drains, filter replacement, and maintenance. Sufficient space should be provided on the side of the unit for routine service and component removal sh[...]

4 Rooftop units require curbs to be mounted first. The duct connections must be located so they will be clear of structural members of the building. 1. Factory Supplied Roof Curbs Roof curbs are Model GKD, which are shipped in a knockdown kit (includes duct adapter) and require field assembly (by others). Assembly instructions are included with the[...]

5 1 Fan Wheel Dia. 1 Fan Wheel Dia. R o t a t i o n R o t a t i o n R o t a t i o n R o t a t i o n Length of Straight Duct GOOD POOR GOOD POOR GOOD POOR Tu rning V anes Tu rning V anes SYSTEM EFFECT F ACTOR CURVES FPM X 100 OUTLET VELOCITY 0 5 10 15 20 25 30 35 40 45 1.2 1.0 0.8 0.6 0.4 0.2 0.0 S TA TIC PRESSURE LOSS CURVE 1 CURVE 2 CURVE 3 CURVE [...]

6 ELECTRICAL INFORMATION The unitmust be electricallygrounded in accordancewith the currentNational Electrical Code,ANSI/NFPA No. 70.In Canada, usecurrent C.S.A. StandardC22.1, Canadian ElectricalCode, Part 1.In addition, theinstaller should be aware [...]

7 1. Main Disconnect (non-fusible, lockable) 2. Motor Starter - Exhaust Air Fan 3. Motor Starter - Outdoor Air Fan 4. Motor Contactor - Energy Wheel 5. 24 VAC Control Transformer 6. 24 VAC Terminal strip 7. Fuses for blower motors 8. Motor Contactor - Indirect Evap Pump 9. Motor Contactor - Direct Evap Pump 10. Evap Pump Transformer (115 VAC Second[...]

8 Wheel Cassette 2 in. filters 2 in. filters Direct Evap Section Exhaust Air Intake Electrical Box Access Panel Access Panel Access Panel Access Panel Access Panel Cassette Slides Out 52 in. Clearance with IG Heater 0 in. Clearance without IG Heater Exhaust Hood Outdoor Air Hood IG Heater *48 in. **64 in. 36 in. 36 in. TOP VIEW Indirect Evap Sect[...]

9 DIMENSIONAL DATA / ACCESS DOOR DESCRIPTIONS Following is a list of items accessible through the access doors shown on the diagram at the right. Some items are optional and may not have been provided. 1) Exhaust blower, motor, and drives 2) Aluminum mesh filters (intake hood) 3) Energy recovery wheel, motor, belt, and seals Outdoor air filters Out[...]

10 1. After the energy recovery unit is set in place, run the overflow and drain lines to the exterior fittings on the evaporative cooler (drain & overflow connections at unit are 1-inch male pipe thread). The supply line can be attached at the downstream side of the evaporative cooler. A manual shut off valve should be mounted in the supply li[...]

11 7. Verify that both airflow and system static pressure are in agreement with the specifications. If these conditions are met, check for water carry over from the discharge side of the media. If carry over is observed, check the distribution header for holes or tears and the water standoff tube for blockage. 8. After all final adjustments are mad[...]

12 Evaporative Timer Evaporative Freeze Protection t2 settings t1 settings Temperature Setting AUTO DRAIN AND FILL WITH FREEZE PROTECTION This system will automatically drain the sump tank and fill it with fresh water at the field adjustable intervals, typically once every 24 hours. This flushes mineral build-up and debris from the tank to promote [...]

13 Cooling coilsare provided witha stainless steeldrain pan with3/4-in. female NPTdrain connection. Adrain trap must be connected to the drain connection to allow excess water to flow out of the drain pan. More importantly, though, due to the negative internal static of the cooling coil compartm[...]

14 DRAIN AND OVERFLOW CONNECTION LOCATIONS Model Connection Locations - in inches Outdoor Air Side Exhaust Side A B C D A B C D HRE-20 4.00 2.875 40.75 42.25 4.00 2.875 52.25 53.75 HRE-45 6.25 5.125 42.625 44.125 6.25 5.125 56.50 58.00 HRE-55 6.375 5.125 53.00 54.50 6.375 5.125 66.375 67.875 HRE-90 6.375 5.125 47.25 48.50 6.375 5.125 71.00 72.25 D [...]

15 Symptom Solution Leaving Air Entering Air 45 ° 15 ° Insufficient water volume or recirculation pump not operating Irregular water distribution on cooling media Scale and mineral deposit formation on face of media Excessive water discharge into drain Water Carry-Over Poor performance after cooling pad replacement Inadequate cooling A. Check wat[...]

16 Regularly scheduled maintenance is the key to peak performance, minimized cost, and extended life of the evaporative cooler. The following is a checklist of items that need to be looked at on a regular basis. 1. The media should be checked for mineral and foreign material deposits that have built up. If these items are left on the media, the lif[...]

17 Electric Heater Application/Operation Factory installed electric heaters can be provided for preheat and/or post-heat. An electric preheater warms the outdoor air prior to the energy recovery wheel to prevent frosting on the wheel. An electric post-heater warms the air leaving the energy recovery wheel to a user specified discharge temperature. [...]

18 Frost Control Application/Operation Extremely cold outdoor air temperatures can cause moisture condensation and frosting on the energy recovery wheel. Frostcontrol is anoptional feature thatwill prevent/control wheelfrosting. Three optionsare available: 1) Timed Exhaust frost control 2) Electric prehe[...]

19 The energy recovery wheel operation can be altered to take advantage of economizer operation (free cooling). Two modesare available: 1)De-energizing the wheelor 2) Modulatingthe wheel. Afield supplied callfor cool (Y1) is required. De-energizing the wheel is accomplished with a signal from[...]

20 Variable Frequency Drives for Blowers Optional factory installed, wired, and programmed variable frequency drives (VFD) may have been provided for modulating or multi-speed control of the blowers. One VFD is provided for each blower (outdoor air and exhaust). The VFDs provided are either Yaskawa model E7 or model GPD305. Refer to the tables on t[...]

21 S1 toSN contactfor On/Off A1 (0-10VDC) referencedto AC (Canuse +15VDC from +V) Parameter Setting A1-01 Access Level 2 C6-02 Carrier frequency 2 d2-02 Ref Lower Limit 50% E2-01 Motor Rated FLA Motor FLA H3-03 Terminal A1 Bias 50% O2-03 User Defaults 1 A1-01 Access Level 0 S1 to SC contact for On/Off[...]

22 FA CT ORY SUPPLIED AND WIRED G MUL TI-VOL TA GE PRIMARY 24 SECONDARY TR1 C FU5 TO UNIT MAIN POWER L3 L2 L1 DS1 SUPPL Y DAMPER D2 ENERGY WHEEL R1 R TR1 SO SR 3 FR FC 2-10V - + 1 TR 5 4 2 SR+ RETURN AIR SENSOR MIXED AIR SENSOR T T1 620 OHM RESISTOR OR OUTDOOR AIR SENSOR SO+ 4 S1 VFD-W L3 3 4 SC L2 L1 MC T3 MA T2 T1 PS1 NO CC OM NO TS 1 6 FROST C O[...]

23 Rotation Sensor Dirty Filter Sensor The rotation sensor monitors energy recovery wheel rotation. If the wheel should stop rotating, the sensor will close a set of contacts in the unit control center. Field wiring of a light (or other alarm) between terminals R & 12 in the unit control center will notify maintenance personnel when a failure h[...]

24 Vapor Tight Lights Vapor tight lights provide light to each of the compartments in the energy recovery unit. The lights are wired to a switch mounted on the outside of the unit. The switch requires a separate power source to allow for power to the lights when the unit main disconnect is off for servicing. OPTIONAL ACCESSORIES Service Outlet 120 [...]

25 OPTIONAL ACCESSORIES The remote panel is a series of junction boxes ganged together and includes a stainless steel face plate. The remote panel is available with a number of different alarm lights and switches to control the unit. The remote panel ships loose and requires mounting and wiring in the field. The remotepanel is available[...]

26 W1 12 7 6 Y2 Y1 G C R NC C NC C NO NO Indicator Lights powered by the ER Unit Unit On/Off Frost Control Economizer Rotation Sensor Supply Dirty Filter Exhaust Dirty Filter PS2 PS3 NC NC NO C NO C Dirty Filter Indicator (Power by Others) Supply Dirty Filter Exhaust Dirty Filter PS2 PS3 Hot L1 Refer to Pressure Switch for voltage and load ratings.[...]

27 A3 A3 W1 12 7 6 Y2 Y1 G C R Heating/Cooling Switches and Night Setback Switch/Timer Unit On/Off Heat Econ/First Stage Cooling Second Stage Cooling Night SetbackSwitch S1 S6 S7 S4 S5 Terminal Block in Unit Control Center Night SetbackTimer OPTIONAL ACCESSORIES Remote Panel Wiring Schematics[...]

28 OPTIONAL ACCESSORIES RAI RAF-P RA FIL TER OA AW COOL COIL ACC HEA T COIL OA F-A OA D SUPP LY BLOWER TO INSIDE FROM INSIDE EW-P OAW- P ENERGY WHEEL EA W EF-A OA I OA FIL TER OAF-P TO OUTSIDE FROM OUSTIDE EXHAUST BLOWER Sensors Mounted by Factory Factory mounted temperature, pressure, and current sensors are available in the locations indicated on[...]

29 START-UP CHECKLIST FOR UNIT Unit ModelNumber ____________________________ (e.g. HRE-55)  Unit Serial Number ____________________________ (e.g. 04C99999) Energy Wheel Date Code ____________________________ (e.g. 0450) Start-up date ____________________________ (MM/DD/YYYY)  Start-upPersonnel Name _________________[...]

30 Line Voltage - check at unit disconnect L1-L2 ________ Volts L2-L3 ________ Volts L1-L3 _______ Volts Motor AmpDraw: Supply Motor Amps L1 ________ Amps L2 ________ Amps L3 ________ Amps Exhaust Motor Amps L1 ________ Amps L2 ________ Amps L3 ________ Amps Fan RPM: SupplyFan RPM _____________ Exhaust Fan RPM _____________ Cor[...]

31 Refer to the respective sections in this Installation, Operation and Maintenance Manual for detailed information. Refer to wiring diagram in unit control center to determine what electrical accessories were provided. Provided with Unit? Frost Control Application / Operation section: Setting Factory Default Yes No Frost Control Setpoint 5ºF Diff[...]

32 Fans (Forward Curved Type) The HRE Models contain a forward curved supply fan and a forward curved exhaust fan. These forward curved fans should be checked for free rotation. If any binding occurs, check for concealed damage and foreign objects in the fan housing. Be sure to check the belt drives per the start-up recommendations in the following[...]

33 Vibration Excessive vibration may be experienced during initial start-up. Left unchecked, excessive vibration can cause a multitude of problems, including structural and/or component failure. The most common sources of vibration are listed below. Many of these conditions can be discovered by careful observation. Refer to the Troubleshooting sect[...]

34 UNIT START-UP Energy Recovery Wheel The HRE models contain a sensible energy recovery wheel. The wheels are inspected for proper mechanical operation at the factory. However, during shipping and handling, shifting can occur that may affect wheel operation. The wheel is accessible through the access door marked “Energy Wheel Cassette Access”.[...]

35 Once the unit has been put into operation, a routine maintenance program should be set up to preserve reliability andperformance. Items tobe included inthis program are: SAFETY CAUTION! Use caution when removing access panels or other unit components, especially while standing on a ladder or other potentially unstea[...]

36 ROUTINE MAINTENANCE Proper fan belt settings Belt Span Deflection = Belt Span 64 The proper belt setting is the lowest tension at which the belts will not slip under peak load operation. For initial tensioning, set the belt deflection at 1 / 64 -inch for each inch of belt span (measured half-way between sheave centers). For example, if the belt [...]

37 External Filter Maintenance Aluminum mesh, 2-inch deep filters are located in the supply weatherhood (if the weatherhood option was purchased). Filters should be checked and cleaned on a regular basis for best efficiency. The frequency of cleaning depends upon the cleanliness of the incoming air. These filters should be cleaned prior to start-up[...]

38 Access to wheel through outdoor air filter door The HRE units have one energy recovery wheel. Open the outdoor air filter door to access the wheel. For the HRE-20 and HRE-45 models, the wheel cassette slides out. Due to the size and weight of the HRE-55 and HRE-90 wheels, they remain stationary and all maintenance is performed in place. There is[...]

39 CLEANING THE ENERGY RECOVERY WHEEL If the wheel appears excessively dirty, it should be cleaned to ensure maximum operating efficiency. Only excessive buildup of foreign material needs to be removed. DISCOLORATION AND STAINING OF ENERGY RECOVERY WHEEL DOES NOT AFFECT ITS PERFORMANCE. Thoroughly spray wheel matrix with household cleaner such as F[...]

40 PARTS LIST 1 2 3 4 8 5 6 7 7 9 Model HRE (shown with indirect evaporative cooler, optional direct evaporative cooler, and indirect gas heater) 10 1. Supply blower - Forward curved fan - Adjustable motor mount for belt tensioning - Adjustable sheaves for speed control 2. Vibrations isolators (quantity 4 per blower)   - Neoprene 3. Energy[...]

41 The HRE units are pre-wired such that when a call for outside air is made (via field supplied 24 VAC control signal wired to unit control center), the supply fan, exhaust fan and energy wheel are energized and the motorized dampers open. The HRE units can be supplied with or without heating and cooling coils. For units with coils, controls can b[...]

42 Test and Balance Report The test and balance report (TAB) is utilized to determine whether the appropriate amount of outdoor air and exhaust air is being supplied and removed from a building, respectively. There are no set rules on what information must be included in a TAB report. As such, if a TAB report indicates that the airflow on a unit is[...]

43 * Always provide the unit model and serial number when requesting parts or service information. * Always check motor amps and compare to nameplate rating. Control power (24 Vac) wiring run is too long (resistance should not exceed 0.75 ohms). Shorten wiring run to mechanical room or install a relay which will turn unit on/off (C/F for relay info[...]

*Always provide the unit model and serial number when requesting parts or service information. *Always check motor amps and compare to nameplate rating. Energy Wheel Does NOTTurn Blower fan motor overloads are tripping and auto-resetting. Decrease fan speed. Possible Cause Symptom Corrective Action Exhaust Only frost control sensors are tripp[...]