Greenheck APEX-200 - Manuals

6 ® Electrical Connections The electrical supply must be compatible with that shown onthe nameplate: voltage, phase, and amperage capacity.Connect power to the unit per the unit specific wiring diagramlocated on the inside of the control center access door. Thewiring diagram indicates which electric...

7 ® Exhaust Hood Exhaust Hood Exhaust Air Inlet Coil Section ControlCenter Wheel Cassettes 2 in. Filters Outdoor Air Intake Hood Service Clearances / Access Locations APEX-200 units require minimum clearances for access on all sides for routine maintenance. Filter replacement,drain pan inspection an...

Water Coils 1. Piping should be in accordance with accepted industry standards. Pipework should be supported independently of the coils. Waterconnections are male N.P.T iron pipe. When installing couplings,do not apply undue stress to the connection extending throughthe unit. Use a backup pipe wrenc...

Drain Pan Traps Drain lines and traps should be run full size or larger fromthe drain pan connection (drain pan connection is 1.25-inchdiameter female thread). Drain pans should have drain linesand traps to permit the condensate from the coils to drainfreely. On all units with drain pans, the trap d...

® 10 Modulating wheel frost control includes a variable frequency drive in addition to the thermostat and pressure sensor. When modulating wheel frost control is initiated, the variable frequency drive will reduce the speed ofthe wheel. Reducing the speed of the energy wheel reduces its effectivenes...

11 ® 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. De-energizing the wheel is accomplished with a signal from a Temperature or Enthalpy sensor mounted in the ...

12 ® Rotation Sensor Dirty Filter Sensor Service Outlet Temperature Control Package Optional Accessories Vapor Tight Lights The rotation sensor monitors energy recovery wheel rotation. If the wheel should stop rotating, the sensor willclose a set of contacts in the unit control center. Field wiring ...

13 ® Optional Accessories Remote Control Panel The remote panel is a series of junction boxes ganged togetherand includes a stainless steel face plate. The remote panel isavailable with a number of different alarm lights and switches tocontrol the unit. The remote panel ships loose and requiresmount...

14 ® For proper unit function and safety, follow everything in this start-up procedure in the order presented. Performprocedure after the electrical connections are complete. Pre-Start Check List 1. Disconnect and lock-out all power switches. 2. Remove any foreign objects that are located in the ene...

15 ® Exhaust Fans (Forward Curved Type) The APEX-200 contains two forward curved exhaust fans located oneither side of the unit (see Basic Unit Operation). These forward curvedfans should be checked for free rotation. If any binding occurs, checkfor concealed damage and foreign objects in the fan ho...

16 ® WRONG WRONG WRONG CORRECT Belt Drive Installation 1. Remove the protective coating from the end of the fan shaft and ensurethat it is free of nicks and burrs. 2. Check fan and motor shafts for parallel and angular alignment. 3. Slide sheaves on shafts - do not drive sheaves on as this may resul...

17 ® Energy Recovery Wheel The APEX contains two energy recovery wheels (see FIGURES 20 & 21 ). These wheels are inspected for proper mechanical operation at the factory. However,during shipping and handling, shifting can occur that mayaffect wheel operation. Wheels are accessible through theacc...

18 ® Once the unit has been put intooperation, a routinemaintenance program shouldbe set up to preserve reliabilityand performance. Items to beincluded in this program are: • Lubrication • Dampers • Fan Belts • Motors • Wheel & Fasteners • Bearings • Filter Maintenance • Coil Maintenance • Energ...

19 Motors Motor maintenance is generally limited to cleaning and lubrication. Cleaningshould be limited to exterior surfaces only. Removing dust and greasebuildup on the motor housing assists proper motor cooling. Never wash-down motor with high pressure spray. Greasing of motors is only intendedwhe...

20 ® External Filter Maintenance Aluminum mesh, 2-inch deep filters are located in thesupply weatherhood (if the weatherhood option waspurchased). Filters should be checked and cleaned ona regular basis for best efficiency. The frequency ofcleaning depends upon the cleanliness of the incomingair. Th...

21 ® Coil Maintenance Filters upstream of the coil should be checked regularly. If the filters are dirty, they should be cleaned orreplaced. It is important that the coils stay clean to maintain desired airflow (refer to Filters in this section). 1. Coils must be clean to obtain maximum performance....

22 Bracket Segment Retainer Lift AwayFrom Segment Catch-Segment Retainer Push Toward Center Center of Wheel Spoke Inside of Wheel Rim Steel retainers are located onthe inside of the wheel rim( FIGURE 27 ). Push the retainer toward center of wheel, thenlift up and away to releasesegments ( FIGURE 28 ...

23 ® CLEANING ENERGY RECOVERY WHEEL SEGMENTS If the wheel appears excessively dirty, it should be cleaned to ensure maximum operating efficiency. Onlyexcessive buildup of foreign material needs to be removed. DISCOLORATION AND STAINING OF ENERGY RECOVERY WHEEL DOES NOT AFFECT ITS PERFORMANCE. Thorou...

24 ® 1 2 3 8 4 5 6 7 9 Model APEX (shown with optional chilled water and hot water coils) 10 1. Supply blower- Plenum fan- Adjustable motor mount for belt tensioning- Adjustable sheaves for speed control 2. Exhaust blower (2 per unit - each side)- Forward curved fan- Adjustable motor mount for belt ...

25 ® Sequence of Operation The APEX unit is pre-wired such that when a call for outside air is made (via field supplied 24 VAC controlsignal wired to unit control center), the supply fan, exhaust fan and energy wheel are energized and themotorized dampers open. The APEX unit can be supplied with or ...

26 ® Troubleshooting Airflow Test and Balance Report The test and balance report (TAB) is utilized to determine whether the appropriate amount of outdoor air andexhaust air is being supplied and removed from a building, respectively. There are no set rules on whatinformation must be included in a TA...

27 ® * 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) wiringrun is too long (resistanceshould not exceed 0.75 ohms). Shorten wiring run to mechanical room or install a rel...

GREENHECK P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410 PH. 715-359-6171 www.greenheck.com #462255 APEX IOM FS Rev. 1 March 2004 Copyright © 2004 Greenheck Fan Corp. Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year fromthe purchas...