Home

Greenheck Fan 470658 MSX Ventilation Hood User Manual

1. fan speed will be at its minimum Potentiometer When the potentiometer is at 100 Control the fan will be at its maximum speed EJ Model MSX Make Up Air Building Pressure Control a variable frequency drive is E Ti controlled according to input from a pressure sensing device Turn both knobs to the upper most pressure setting You may have to remove the outdoor pressure tap tubing VAV systems should go to maximum speed Set both knobs at the lowest setting and the VAV systems should go to minimum speed Building Pressure Control Reset the correct pressure limits before starting the unit Pressure Indicating Needle Pressure Setting Needles This picture depicts a typical photohelic setting Typical settings are 0 0 inch wc for the lower pressure setting and 0 10 inch wc for the upper pressure setting The needle indicates a negative building pressure During correct operation the indicating needle will remain between or near the setting needles Pressure Setting Knobs Photohelic Gauge External Signal a variable frequency drive is controlled according to input from an external 2 10 VDC or 4 20 mA signal by others A 2 VDC or 4 mA signal will send the blower to low speed The blower will go to maximum speed with a 10 VDC or 20 mA signal Variable Kitchen Control a variable frequency drive is controlled by input from a remote speed control This unit allows a
2. AIGREENHECK Building Value in Air Part 470658 MSX Make Up Air Unit Installation Operation and Maintenance Manual Please read and save these instructions Read carefully before attempting to assemble install operate or maintain the product described Protect yourself and others by observing all safety information Failure to comply with instructions could result in personal injury and or property damage Retain instructions for future reference General Safety Information Only qualified personnel should install this unit Personnel should have a clear understanding of these instructions and should be aware of general safety precautions Improper installation can result in electric shock possible injury due to coming in contact with moving parts as well as other potential hazards Other considerations may be required if high winds or seismic activity are present If more information is needed contact a licensed professional engineer before moving forward 1 Follow all local electrical and safety codes as well as the National Electrical Code NEC the National Fire Protection Agency NFPA where applicable Follow the Canadian Electric Code CEC in Canada DANGER Always disconnect power before working on or near a unit Lock and tag the disconnect switch or breaker to prevent accidental power up CAUTION When servicing the unit motor may be hot enough to cause pain or injury Allow motor to cool before
3. approximately 285 feet total length for 14 gauge wire 455 feet total length for 12 gauge wire If the resistance exceeds 0 75 ohms an industrial style plug in relay should be wired in place of the remote switch The relay must be rated for at least 5 amps and have a 24 VAC coil Failure to comply with these guidelines may cause motor starters to chatter or not pull in resulting in contactor failures and or motor failures EM Model MSX Make Up Air 1 Determine the Size of the Main Power Lines The unit s nameplate states the voltage and the unit s MCA The main power lines to the unit should be sized accordingly The nameplate is located on the outside of the unit on the control panel side Voltage Hertz Phase VOLTS HZ PH SUP HP EXH HP MCA MOP Unit s Total MCA Electrical Nameplate 2 Provide the Opening s for the Electrical Connections Electrical openings vary by unit size and arrangement and are field supplied 3 Connect the Main Power Connect the main power lines to the disconnect switch and main grounding lug s Torque field connections to 20 in lbs 4 Wire the Optional Convenience Outlet The convenience outlet requires a separate 115 volt power supply circuit The circuit must include short circuit protection which may need to be supplied by others 5 Wire the Optional Accessories Reference the Ladder Diagram on the inside of
4. mount the pressure tap to the oe outside of the unit 4 Choose a location out of the prevailing lt winds and away from supply or exhaust fans to assure accurate readings 2 Run Pressure Tap Lines Run a pressure tap line from the pressure tap on the outside of the unit to the low pressure tap on the back of the photohelic gauge Run a second pressure tap line from the high pressure tap on the back of the photohelic gauge to the space Fifty feet of tubing is supplied with the unit High Pressure Tap to Space Factory Wiring Low Pressure ap to Outside Connections for Photohelic Gauge 3 Set the Building Pressure The pressure gauge is used to set the desired building pressure The pressure is set by adjusting the knobs for the upper and lower pressure limits Typical settings are 0 0 inch wc for the lower and 0 10 inch wc for the upper pressure setting Pressure Indicating Pressure Setting Needle Needles Pressure Setting Knobs Typical Photohelic Gauge Settings Model MSX Make Up Air EE Start Up Blower Refer to the Start Up Checklist in the Reference section before proceeding further Pre Start Up Check Rotate the fan wheel by hand and make sure no parts are rubbing Check the V belt drive for proper alignment and tension a guide for proper belt tension and alignment is provided in the Belt Maintenance section Check fasteners set screws and locking collars on the fan bearing
5. amps and RPMs 5 Air Volume Measurement amp Check Measure the unit s air volume cfm and compare it with it s rated air volume If the measured air volume is off adjust the fan s RPM by changing adjusting the drive The most accurate way to measure the air volume is by using a pitot traverse method downstream of the blower Other methods can be used but should be proven and accurate IMPORTANT Changing the air volume can significantly increase the motor s amps If the air volume is changed the motor s amps must be checked to prevent overloading the motor NOTE To ensure accuracy the dampers are to be open when measuring the air volume 6 Set Up Optional Components Adjust the settings on the optional components See the Control Center Layout in the Reference section for location of optional components Heating Inlet Air Sensor Typical setting 60 70 F 15 21 C Cooling Inlet Air Sensor Typical setting 75 F 24 C Building Freeze Protection Typical setting 5 minutes 45 F 7 C e Dirty Filter Gauge Typical setting Settings vary greatly for each unit see Reference section for adjusting information Model MSX Make Up Air Start Up Electric Heater optional Refer to the Start Up Checklist in the Reference section before proceeding further Pre Start Up Check Check all electrical connections Tighten any loose connection to all components including contactors heating elements an
6. control the return air amounts Return air damper modulates from fully open to fully closed based on an external 2 10 VDC or 4 20 mA signal by others The return air damper will close with a 10 VDC or 20 mA signal The return air damper should open with a 2 VDC or 4mA signal The damper actuator may take a few minutes to open or close Model MSX Make Up Air BX Operation Electrical Electrical Sequence 1 Exhaust Fan Contact S1 Closed optional Power passes through N C contact on exhaust fan overload ST2 OL which is closed if exhaust fan M2 has not overloaded Power passes to exhaust fan starter ST2 N O contact on exhaust fan starter ST2 is energized and closed Power passes to exhaust fan Exhaust fan M2 starts 2 Supply Fan Contact S2 Closed e Power passes through N C field supplied fire contact FSC Power passes through optional N O contact on exhaust fan starter ST2 which is closed when the optional exhaust starter ST2 is activated Power passes through N C contact on supply starter overload ST1 OL which is closed if the supply fan has not overloaded Power passes through N C contact on optional freeze protection timer RT4 which remains closed if the temperature has remained above the set point Power passes to and energizes optional inlet damper D1 which opens Power passes through optional N O damper limit switch DL1 which is energized and closed when the optional inlet d
7. designed for outdoor applications may be stored outdoors if absolutely necessary Roads or aisles for portable cranes and hauling equipment are needed The fan should be placed on a level surface to prevent water from leaking into the unit The unit should be elevated on an adequate number of wooden blocks so that it is above water and snow levels and has enough blocking to prevent it from settling into soft ground Locate parts far enough apart to permit air circulation sunlight and space for periodic inspection To minimize water accumulation place all unit parts on blocking supports so that rain water will run off Do not cover parts with plastic film or tarps as these cause condensation of moisture from the air passing through heating and cooling cycles Inspection and Maintenance during Storage While in storage inspect fans once per month Keep a record of inspection and maintenance performed If moisture or dirt accumulations are found on parts the source should be located and eliminated At each inspection rotate the fan wheel by hand ten to fifteen revolutions to distribute lubricant on motor Every three months the fan motor should be energized If paint deterioration begins consideration should be given to touch up or repainting Fans with special coatings may require special techniques for touch up or repair Machined parts coated with rust preventive should be restored to good condition promptly if signs of rust o
8. drain line NOTE Solenoid s may be provided by Greenheck if ordered or by others CAUTION Any wiring deviations may result in personal injury or property damage Greenheck is not responsible for any damage to or failure of the unit caused by incorrect final wiring EE Model MSX Make Up Air s GFC De Unit Assembly Part ASCO Solenoid Energized Diameter Qty Model Number No Part No Type Position i 1 2 inch MSX 461262 8210G2 Supply Closed 1 H12 H22 uppiy 12 7 mm 852370 Supply i MSX H32 383086 8210G34 Line Open inch 4 lt 9000 cfm Drain 12 7 mm 3 4 inch MSX H32 383088 8210G9 Supply Closed 1 29000 cfm 19 05 mm 852371 Supply MSX H35 1 2 inch H38 H42 383086 8210G34 ate Open 12 7 mm 1 To Media A Pressure Factory aa Gauge Installed Sump Drain LI Manual Supply C H lt Valve f a Roof 47 Supply Solenoid Line z Normally Closed Trap Supply Line Drain Solenoid Field Normally Open Installed Water Wizard Installation 3 Wire the Solenoid s Wire the supply line solenoid and drain solenoid as shown on the unit s wiring diagram in the control center 4 Wire the Temperature Sensor If the evaporative cooler shipped separate from the unit the temperature sensor must be wired The sensor wire is bundled inside the discharge end of the evaporative cooler Wire the s
9. level in the sump tank at all times when using the Flow Test Mode Program Mode Program Mode allows the user to view the Program Menu and edit the factory default settings To access Program Mode and view the Program Menu press and hold the Enter key for three seconds While viewing the Program Menu press the Up and Down keys to scroll through the Menu Options To view the setting of the selected Menu Option press the Enter key To edit the setting press the Up or Down key while viewing the setting To save the setting and return to the Program Menu press the Enter key To return to the Program Menu without saving the change wait 10 seconds To exit Program Mode from the Program Menu wait 10 seconds WARNING Changing the default settings will significantly affect performance Only change a setting after reading and understanding this entire manual WARNING The Enter key must be pressed to save any changes made to a setting Dry Bulb Temperature The dry bulb temperature is visible on the home screen If a number is not visible wait 15 seconds and use the Up and Down Keys until a number is displayed Wet Bulb Temperature To view the Wet Bulb Temperature simultaneously press and hold the Up and Down Keys Indicating Lights Three indicating lights are located across the top of the display to indicate the status of the Water Wizard Light Status ae Blinking Blinking ane On Off Long on S
10. panel Securing Evaporative Module When mounting the evaporative cooler it is important that it is level to ensure proper operation and water drainage Model MSX Make Up Air Installation of Electrical Wiring IMPORTANT Before connecting power to the unit read and understand the following instructions and wiring diagrams Complete wiring diagrams are attached on the inside of the control center door s IMPORTANT All wiring should be done in accordance with the latest edition of the National Electric Code ANSI NFPA 70 and any local codes that may apply In Canada wiring should be done in accordance with the Canadian Electrical Code IMPORTANT The equipment must be properly grounded Any wiring running through the unit in the airstream must be protected by metal conduit metal clad cable or raceways CAUTION If replacement wire is required it must have a temperature rating of at least 105 C except for an energy cut off or sensor lead wire which must be rated to 150 C DANGER High voltage electrical input is needed for this equipment This work should be performed by a qualified electrician CAUTION Any wiring deviations may result in personal injury or property damage Greenheck is not responsible for any damage to or failure of the unit caused by incorrect final wiring IMPORTANT Greenheck s standard control voltage is 24 VAC Control wire resistance should not exceed 0 75 ohms
11. read and follow the manufacturer s recommendations before using any cleaning fluid CAUTION Caution should be used to avoid injury when venting the coil High pressure and or high temperature fluids can cause serious injuries Chilled Water Coils Test the circulating fluid for sediment corrosive products and biological contaminants Make the necessary corrective measures Maintain adequate fluid velocities and proper filtering of the fluid If automatic air vents are not utilized periodic venting of the coil is recommended to remove accumulated air Model MSX Make Up Air EE Maintenance Fall Evaporative Coolers The water should be shut off and all the lines drained when the outside temperature drops below 45 F Remove drain plugs for the winter Clean all interior parts of any mineral deposits or foreign materials that may have built up during the cooling season Replace any worn or non functioning parts Winterizing Chilled Water Coils During the winter chilled water coils need to be protected against freezing Greenheck recommends protecting the coils by either blowing out the coils or by flushing the coils Blowing Out Coils 1 Close valves on the supply and return lines 2 Open drain valves and or drain plug Remove vent plug to allow coil to drain faster 3 After coil is fully drained connect a blower to the caps Do not connect the blower to the air vent or drain plug 4 Close the vent p
12. self tapping sheet metal screws Installing the exhaust fan prior to the supply unit will allow for easier installation of options Installing Exhaust Fan NOTE NFPA 96 requires the exhaust fan to be hinged 6 Install Exhaust Options Install optional Greenheck hinge kit with restraining cables and grease trap with drain connection Model MSX Make Up Air JJ 7 Install Supply Unit Use a crane and a set of spreader bars hooked to the factory lifting lugs to lift and center the unit on the extension equipment support s Use self tapping sheet metal screws to fasten the unit to the extension equipment support s Installing Supply Unit NOTE The use of all lifting lugs and a set of spreader bars is mandatory when lifting unit NOTE Some units come with the weatherhood attached and Step 8 may not apply 8 Assemble and Attach Weatherhood The weatherhood can now be assembled and or attached to the unit Detailed assembly instructions can be found with the weatherhood If the optional evaporative cooling module was selected this step does not apply refer to the next section Installation of the Optional Evaporative Cooling Module 9 Seal Weatherhood Seam Using an appropriate sealant seal the seam between the weatherhood and the unit Complete Combination Installation EH Model MSX Make Up Air Installation of Evaporative Cooling Module optional NOTE unit and require no additional mo
13. the control center door for correct wiring of the following accessories e TSCP e KSCP e Blower Switch e Heat Switch Indicating Lights e Dirty Filter Indicator NOTE TSCP has number to number wiring 6 Wire the Optional Evaporative Cooler Reference the Ladder Diagram on the inside of the control center door for correct wiring of the pump and the optional auto drain and flush NOTE Large evaporative coolers may require a separate power supply Installation of Electric Heater optional WARNING Electrical Shock Hazard Disconnect all power sources before doing any work on the unit General The requirements and practices described below are based on the National Electric Code NEC and The Space Heating Standard of the Underwriters Laboratories Inc UL Although UL requirements are uniform throughout the country local electrical codes may deviate from the National Electrical Code Therefore local inspection authorities should be consulted regarding local requirements Electrical Wiring Instructions 1 Use the wiring diagram supplied with the heater as a guide in correlating field wiring with the heater internal wiring 2 All field wiring to the heater must meet the requirements of the National Electric Code and any other applicable local or state codes 3 Wiring to the heater must be rated for 75 C 167 F minimum 4 The fan is interlocked by the factory to the control circuit so th
14. the drain line A trap should be used to prevent sewer gas from being drawn into the unit 3 Check Adjust Water Level Check the water level in the sump tank The water level should be above the pump intake and below the overflow Adjust the float as needed to achieve the proper water level Drain Trap Model MSX Make Up Air EE Installation of Water Wizard optional Evaporative Cooling with the Water Wizard The following instructions are provided for evaporative coolers equipped with the Water Wizard only Additional instructions are provided for evaporative coolers equipped with the auto drain and fill or bleed off WARNING Disconnect and lock out all power and gas before performing any maintenance or service to the unit Failure to do so could result in serious injury or death and damage to equipment Water Wizard Valves When provided by Greenheck Part numbers subject to change 1 Install Normally Closed Supply Line Solenoid Connect the water supply line to the manual supply valve in the unit Install the supply solenoid in the supply line upstream of the manual supply valve and below the roof line 2 Install Normally Open Drain Line Solenoid Connect the drain line to the supply line between the manual supply valve and the supply solenoid Install a drain solenoid in the drain line below the roof line A trap should be installed in the
15. Nozzle Distributor 2 Verify Nozzle Placement Inspect the refrigerant distributor and verify that the nozzle is in place The nozzle is 6 generally held in place eile by a retaining ring oris Ring an integral part of the distributor itself A Nozzle Placement NOTE If a hot gas bypass kit was provided by others refer to the manufacturer s instructions 3 Install Suction Line Install suction line s from the compressor to the suction connection s which are stubbed through the side of the cabinet 4 Install the Liquid Line and Thermal Expansion Valve TEV by others Liquid line openings vary by coil size and circuiting and are field supplied Follow the TEV recommendations for installation to avoid damaging the valve If the valve is externally equalized use a tubing cutter to cut off the plugged end of the factory installed equalizer line Use a de burring tool to remove any loose metal from the equalizer line and attach it to the TEV If the valve is internally equalized the factory installed equalizer line can be left as is Suction Header Coil Distributor Equalizer Line Liquid Line Nozzle Thermal Expansion Valve by others Straps Suction Connection Suction Line Remote Sensing Bulb General Installation 5 Mount the Remote Sensing Bulb by oth
16. Typical setting 75 F 24 C O Building Freeze Protection Actual Setting Typical setting 5 minutes 45 F 7 C O Dirty Filter Gauge Actual Setting Typical setting varies KA Model MSX Make Up Air Start Up Electric Heater optional refer to Electric Heater Start Up section for further detail O Check line voltage L1 L2 L2 L3 L1 L3 O Set the unit s operating temperature F Start Up Evaporative Cooler optional refer to Evaporative Cooler Start Up section for further detail O Check media orientation O Check for proper water flow to distribution headers O Check for distribution header orientation to prevent water spillage Maintenance Log Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes Date Time AM PM Date Time AM PM Notes Notes A Model MSX Make Up Air EX Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date Any units or parts which prove defective during the warranty period will be replaced at our option when ret
17. amper is open It may take several minutes for the damper to fully open and for the damper limit switch to close Power passes to and energizes fan relay RF Power passes through N O contact on fan relay RF which closes when the fan relay RF is energized Power passes to and energizes supply fan starter ST1 N O contact on supply fan starter ST1 is energized and closed Supply fan M1 starts 3 Electric Heat Contact S4 Closed optional Power passes through N O contact on fan relay RF which is energized and closed e Power passes through N C contact on optional inlet air sensor TS4 which is closed if the inlet air temperature is below the set point Power passes to and energizes heat relay RH e Power passes through N O contact on heat relay RH which closes when the heat relay RH is energized e Power passes through N O contact on pressure EZ Model MSX Make Up Air 4 differential switch PDS which closes when proper airflow is achieved Power passes through N C automatic and manual reset temperature cutouts A and M which remain closed if the maximum temperature has not been reached Power passes to and energizes operating contactor relay C1 Power passes through N O contacts on operating contactor C1 which is closed Electric heater modulates stages to maintain temperature set point Evaporative Cooling Contact S4 Closed optional N O contact on fan relay RF is ener
18. ble V belt drives must be checked on a regular basis for Cleaning should be limited to exterior surfaces only wear tension alignment and dirt accumulation Removing dust and grease build up on the motor Check the tension by measuring the deflection in the assures proper motor cooling belt as shown below Motors supplied with grease fittings should be greased in accordance with the manufacturer s Check the alignment by using a straight edge across recommendations both sheaves as shown below IMPORTANT IMPORTANT Premature or frequent belt failures can be caused by Do not allow water or solvents to enter the motor improper belt tension or misaligned sheaves or bearings Motors and bearings should never be sprayed with steam water or solvents misalignment will cause excessive bearing loads and i result in failure of the fan der motor IMPORTANT bearings Greasing motors is only intended when fittings are Abnormally low belt tension will cause squealing provided Many motors are permanently lubricated on start up excessive belt flutter slippage and spi overheated sheaves requiring no additional lubrication IMPORTANT Do not pry belts on or off the sheave Loosen belt tension until belts can be removed by simply lifting the belts off the sheaves IMPORTANT e Abnormally high belt tension or drive Wheels Wheels require little attention when moving clean air Occasionally oil and dust may accumulate
19. ccur Immediately remove the original rust preventive coating with petroleum solvent and clean with lint free cloths Polish any remaining rust from surface with crocus cloth or fine emery paper and oil Do not destroy the continuity of the surfaces Wipe thoroughly clean with Tectyl 506 Ashland Inc or the equivalent For hard to reach internal surfaces or for occasional use consider using Tectyl 511M Rust Preventive or WD 40e or the equivalent REMOVING FROM STORAGE As units are removed from storage to be installed in their final location they should be protected and maintained in a similar fashion until the equipment goes into operation Prior to installing the unit and system components inspect the unit assembly to make sure it is in working order 1 Check all fasteners set screws on the fan wheel bearings drive motor base and accessories for tightness 2 Rotate the fan wheel s by hand and assure no parts are rubbing Table of Contents Installation Clearance to Combustibles Service Clearances 3 Indoor Unit occa caci bedoi a aiina ar dem m an 8 8 Ge a 3 Unit Arrangement DB HZ UB 4 Roof Mounted Unit Arrangement DBC 5 6 Optional Evaporative Cooling Module 7 Electrical Wiring 8 Optional Electrical Heater 9 Optional Evaporative Cooling Piping 10 11 Optional Water Wizard 12 Optional Direct Expansi
20. d 24 VAC between Wire Heat Switch S4 terminals 22 and 21 Main Transformer TR2 defective Replace transformer 24 VAC between terminal A2 on heat relay RH and X Optional Inlet Air Sensor TS4 holding Adjust TS4 setting Reference Blower Start Up Step 6 24 VAC between terminals T1 and 21 Heat Relay RH is not energized Check for loose connections Repair or replace Heat Relay RH 24 VAC between terminals and 21 Pressure Differential Switch PDS open Check on cause of control loss Automatic and or Manual Reset Cutouts A and M tripped Reset Replace Automatic and or Manual Reset Cutouts A and M Check on cause of control loss At this time the heater should be energized The heating elements will not be on if the leaving air temperature is above its set point on the Remote Adjuster RA KI Model MSX Make Up Air Troubleshooting Evaporative Cooler does not Operate Recirculating pump Supply fan must be on for cooler to operate 24 VAC between terminals Cool Switch S4 off Y1 and X Turn Cool Switch S4 on Cool Switch not wired Wire Cool Switch S4 24 VAC between terminal A2 on Cooling Relay RC and X Optional Inlet Air Sensor TS4 holding Adjust TS4 setting Reference Blower Start Up Step 6 115 VAC between terminals 102 and 101 Cooling Transformer TR4 defective Replace transformer 115 VAC between terminal 114 and 101 Cooling Relay RC is not energi
21. d main power lugs WARNING Disconnect and lock out all power before performing any maintenance or service to the unit Failure to due so could result in serious injury or death and damage to equipment 1 Check the Voltage Before starting the heater compare the supplied voltage hertz and phase with the heater s nameplate information 2 Airflow Interlock With the supply fan on verify the electric heater s airflow interlock DDS is made 3 Set the Unit s Operating Temperature Set the operating temperature by adjusting the discharge temperature selector Typical settings are 65 70 F 18 21 C If the heater is equipped with an optional inlet air sensor the heater will not energize unless the outdoor air temperature is less than the inlet air sensor s set point EFA Model MSX Make Up Air Start Up Evaporative Cooling Recirculating optional 1 Check the Installation The media may have been removed a installation so its orientation d should be double checked The media should be installed with the steeper flute angle sloping down towards the entering air side Media Orientation Verify that the stainless steel caps and distribution headers are in place The headers should be located over the media towards the entering air side The caps should be placed over the headers 2 Check the Pump Filter Check that the pump filter is around the pump inlet 3 Fill the Sump and Adjust the F
22. during shipment If the unit cannot be installed and operated immediately precautions need to be taken to prevent deterioration of the unit during storage The user assumes responsibility of the unit and accessories while in storage The manufacturer will not be responsible for damage during storage These suggestions are provided solely as a convenience to the user INDOOR The ideal environment for the storage of units and accessories is indoors above grade ina low humidity atmosphere which is sealed to prevent the entry of blowing dust rain or snow Temperatures should be evenly maintained between 30 F 7 C and 110F 43 C wide temperature swings may cause condensation and sweating of metal parts All accessories must be stored indoors in a clean dry atmosphere Remove any accumulations of dirt water ice or snow and wipe dry before moving to indoor storage To avoid sweating of metal parts allow cold parts to reach room temperature To dry parts and packages use a portable electric heater to get rid of any moisture build up Leave coverings loose to permit air circulation and to allow for periodic inspection H Model MSX Make Up Air The unit should be stored at least 31 2 in 89 mm off the floor on wooden blocks covered with moisture proof paper or polyethylene sheathing Aisles between parts and along all walls should be provided to permit air circulation and space for inspection OUTDOOR Units
23. e the example shown to the right Housing Blower Rotation To reverse the rotation on three phase units disconnect and lock out the power then interchange any two power leads To reverse the rotation on single phase units disconnect and lock out the power then rewire the motor per the manufacturer s instructions IMPORTANT If the blower is rotating in the wrong direction the unit will move some air but will not perform as designed Be sure to perform a visual inspection to guarantee the correct blower rotation 3 Check for Vibration Check for unusual noise vibration or overheating of the bearings Reference the Troubleshooting section for corrective actions IMPORTANT Excessive vibration may be experienced during the initial start up Left unchecked it can cause a multitude of problems including structural and or component failure IMPORTANT Generally fan vibration and noise is transmitted to other parts of the building by the ductwork To minimize this undesirable effect the use of heavy canvas duct connectors is recommended 4 Motor Check Measure the motor s voltage amps and RPM Compare to the specifications Motor amps can be reduced by lowering the motor RPM or increasing system static pressure IMPORTANT Additional starters and overloads may be provided in the make up air control center for optional exhaust blowers Any additional overloads must be checked for proper voltage
24. e electric heater will not operate unless the fan is on 5 If heater does not have a built in disconnect switch or main circuit breaker install a remote disconnect furnished by others in accordance with the National Electric Code Article 424 65 Calculation of Line Currents amps watts Single Phase Current volts EXAMPLE 5 kW 208 volt 5000 watts _ 208 volts 24 amps watts Three Phase Current Volts x 1 73 EXAMPLE 14 4 kW 208 volt 14400 watts _ 14400 _ 208 voltsx1 73 360 40 amps Sizing of Supply Conductors The required minimum size of supply conductors is marked at the field wiring terminals within the heater control box or reference the Supply Wire Size table included in this section The wire gauges are calculated for 125 of the heater line current as required by the National Electric Code Article 424 3 b based on conductor insulation rated for 75 C 167 F Supply Wire Size Not more than six conductors in Single Conduit Max Heater Max Heater AWG or ine Current AWG or Line Current MCM MCM Ca 12 oj a 1 1 For 7 24 conductors in raceway or cable reduce allowable heater line currents to 871 2 of those shown above 2 Based on 30 C 86 F ambient temperature for higher ambient temperature see National Electric Code table 310 16 and 310 18 Note 13 3 Based on 80 of ratings in the National Electric Code table 310 16 for 75 C insulation Effect of Low Voltage
25. e recommended water pressure does not provide enough water increase the pressure until the desired water supply is achieved If the recommended water pressure provides too much water decrease the water pressure until the desired water supply is achieved CAUTION Only proceed to Steps 2 and 3 if Step 1 does not correct the problem 2 Enter Program Mode Press and hold the Enter key for three seconds to enter Program Mode The display will read Pro when Program Mode is active Program Display 3 Adjust the On Time Factor O While in the Program Menu use the Up and Down keys to navigate through the menu options until ont is displayed With ont displayed press the Enter key to access the setting With the setting displayed use the Up and Down keys to adjust the setting as needed Increase the factor to increase the water supply or decrease the factor to decrease the water supply Press the Enter key to save the new On Time Factor and return to the Program Menu On Time Factor Display EZA Model MSX Make Up Air A Maintenance Routine CAUTION Snow Accumulation Clear snow away from roof mounted units Keep the snow clear of the intake and access doors Lock out the gas and the electrical power to the unit before performing any maintenance or service operations to this unit Motors Motor maintenance is generally limited to cleaning V Belt Drives and lubrication where applica
26. e roof reference the CAPS submittal for placement of curb equipment support s in relation to the unit Verify that all unit supports are level shim if necessary Attach curb to roof and flash into place Attach the equipment support s to the roof remove metal cover flash to wooden nailer and reinstall cover Equipment Support Roof Curb and Equipment Support 2 Install Combination Extension Install combination extension over curb Lag into place using wood screws Locate the extension so the tall vented side is over the exhaust opening ae 1i Inside Flange Combination Extension 3 Install Ductwork Good duct practices should be followed for all ductwork All ductwork should be installed in accordance with SMACNA and AMCA guidelines NFPA 96 and any local codes Reference the CAPS submittal for ductwork size and location Exhaust H Ductwork y Others Ductwork The use of a duct adapter is recommended ona downblast DBC arrangement to align the ductwork with the supply unit The duct adapter is only a guide and is not to be used as a support for the ductwork 4 Apply Sealant Apply an appropriate sealant around the perimeter of the curb and duct adapter s to isolate fan vibration and prevent water penetration Exhaust Duct Installed Sealant _ Supply Duct with Duct Adapter Installed Sealing Ductwork 5 Install Exhaust Fan Fasten exhaust fan to curb extension with
27. ement to align the ductwork with the supply unit The duct adapter is only a guide and is not to be used as a support for the ductwork 3 Apply Sealant Apply an appropriate sealant around the perimeter of the curb Supply Air Ductwork and duct Arrangement DB only adapter s to isolate fan vibration and prevent water penetration 4 Install Unit Use acrane anda set of spreader bars hooked to the factory lifting lugs to lift and center the unit on the curb equipment support s Use self tapping sheet metal screws to fasten the unit to the curb equipment support s Sealant Ductwork Setting Unit LH Model MSX Make Up Air NOTE The use of all lifting lugs and a set of spreader bars is mandatory when lifting the unit NOTE Some units come with the weatherhood attached and Step 5 may not apply 5 Assemble and Attach Weatherhood The weatherhood can now be assembled and attached to the unit Detailed assembly instructions can be found with the weatherhood If the optional evaporative cooling module was selected this step does not apply refer to the Installation of the Optional Evaporative Cooling Module section page 7 6 Seal Weatherhood Seam Using an appropriate sealant seal the seam between the weatherhood and the unit Complete Rooftop Installation Installation of Roof Mounted Unit Arrangement DBC 1 Install Curb Equipment Support s Position curb equipment support s on th
28. enance additional measures must be taken to secure the unit in all directions Hangers Unit Supports Indoor Mounting NOTE Two nuts must be used on each end of each threaded hanging rod for proper support NOTE Good duct practices should be followed for all ductwork Ductwork should be installed in accordance with SMACNA and AMCA guidelines NFPA 96 and any local codes Reference the CAPS submittal for duct sizes 3 Seal Wall Opening Apply sealant around the perimeter of the weatherhood to prevent water penetration and drafts into the building Sealant Seal Wall Opening Model MSX Make Up Air EJ Installation of Arrangement DB HZ UB 1 Install Curb and or Equipment Support s Position curb equipment support s on the roof reference the CAPS submittal for placement of curb equipment support s in relation to the unit Verify that unit supports are level shim if necessary Attach curb to roof and flash into place Attach the equipment support s to the roof remove metal cover flash to wooden nailer and reinstall cover Roof Curb Equipment Support Roof Curb and Equipment Support 2 Install Ductwork Good duct practices should be followed for all ductwork All ductwork should be installed in accordance with SMACNA and AMCA guidelines NFPA 96 and all local codes Reference the CAPS submittal for ductwork sizes The use of a duct adapter is recommended ona downblast DB arrang
29. ensor wire to terminals Al2 and AIC on the terminal strip in the units control center NOTE The Water Wizard start up must be completed for proper performance Installation of Direct Expansion DX Coil Piping optional IMPORTANT Guidelines for the installation of direct expansion cooling coils have been provided to insure proper performance and longevity of the coils These are general guidelines that may have to be tailored to meet the specific requirements of any one job As always a qualified party or individual should perform the installation and maintenance of any coil Protective equipment such as safety glasses steel toe boots and gloves are recommended during the installation and maintenance of the coil IMPORTANT All field brazing and welding should be performed using high quality materials and an inert gas purge such as nitrogen to reduce oxidation of the internal surface of the coil IMPORTANT All field piping must be self supporting and flexible enough to allow for the thermal expansion of the coil 1 Locate the Distributor s by Removing the Distributor Access Panel Distributor Access Panel Suction Header Coil Distributor Equalizer Line Liquid Line Nozzle Thermal Expansion Valve by others Hot Gas By Pass _ by others 3 A Hot Gas Side Port Suction Line J Straps Suction Connection Remote Sensing Bulb Installation with Hot Gas Bypass
30. ers The expansion valve s remote sensing bulb should be securely strapped to the horizontal run of the suction line at the 3 or 9 o clock position and insulated 6 Check Coil Piping for Leaks Pressurize the coil to 100 psig with dry nitrogen or other suitable gas The coil should be left pressurized for a minimum of 10 minutes If the coil holds the pressure the hook up can be considered leak free If the pressure drops by 5 psig or less re pressurize the coil and wait another 10 minutes If the pressure drops again there is likely one or more small leaks which should be located and repaired Pressure losses greater than 5 psig indicate a large leak that should be isolated and repaired 7 Evacuate and Charge the Coil Use a vacuum pump to evacuate the coil and any interconnecting piping that has been open to the atmosphere Measure the vacuum in the piping using a micron gauge located as far from the pump as possible Evacuate the coil to 500 microns or less and then close the valve between the pump and the system If the vacuum holds to 500 microns or less Model MSX Make Up Air EE for one minute the system is ready to be charged or refrigerant in another portion of the system can be opened to the coil A steady rise in microns would indicate that moisture is still present and that the coil should be further vacuumed until the moisture has been removed Failure to obtain a high vacuum indicates a great deal of moisture
31. filters should be from the same manufacturer and the same size as the original filters provided with the unit Evaporative Coolers The media should be periodically brushed lightly with a soft bristle brush in an up and down motion while flushing with water This aids in reducing the amount of mineral build up For large amounts of mineral build up clean or replace the media and increase the water bleed off or flush rate The cooling media has a useful life of 3 to 5 years depending on the water quality and the bleed off or flush rate IMPORTANT When reinstalling the evaporative media make sure that it is installed correctly Reference the drawing shown below IMPORTANT Replacement media should be from the same manufacturer and be the same size as the original media provided with the unit Entering Air Media Orientation Maintenance Routine continued Cooling Coils WARNING Repair and replacement of the coil and the connecting piping valves etc should be performed by a qualified individual Inspect the coil for signs of corrosion and or leaks Repair any leaks as required Inspect the coil s surface for foreign material If the coil surface needs cleaning clean the coil from the leaving air side so that foreign material will be washed out of the coil rather than pushed farther in Inspect and clean the drain pan to prevent the growth of algae and other organisms IMPORTANT Be sure to
32. gized and closed Power passes through N O contact on optional inlet air sensor TS4 which is energized and closed if the inlet air temperature is above the set point Power passes to and energizes cool relay RC N O contact on cool relay RC is energized and closed Power passes to optional evaporative cooling pump P1 If DX or chilled water coils are used rather than an evaporative cooler the cooling sequence of operation will depend on the coil controls Cooling coil controls are supplied by others Operation Water Wizard optional L1 L2 L3 Function Key Enter Key Water Wizard User Interface Key Function Description Drain Mode Drain Mode locks open the drain solenoid and drains the supply line between the supply solenoid and the media To activate Drain Mode simultaneously press the Function and Enter Keys L2 will light To deactivate Drain Mode and unlock the drain solenoid simultaneously press the Function and Enter Keys again Flow Test Mode Activating Flow Test Mode opens the supply solenoid and allows water to pass to the manual supply valve To activate Flow Test Mode press and hold the Function Key for one second L3 will flash To deactivate Flow Test Mode and allow the supply solenoid to close press and hold the Function Key again for one second CAUTION The sump drain line must be clear and draining to a safe location before using Flow Test Mode CAUTION Be aware of the water
33. hat the return air damper fully opens and fully closes When the potentiometer is at O the return air damper will open When the potentiometer is at 100 the return air damper will close The damper actuator may D take a few minutes to open or BLOWER THereenneox close Potentiometer Control A Building Pressure Control a modulating spring return actuator is used to control the return air amounts The return air damper modulates from fully open to fully closed based on a signal from a remote pressure sensing device Turn both knobs to the upper most pressure setting You may have to remove the outdoor pressure tap tubing The return air damper should close Building Pressure Control Set both knobs at the lowest setting and the damper should open It may take one to two minutes for the damper to reach the desired position Reset the correct pressure limits before starting the unit This picture shows a typical photohelic setting Typical settings are 0 0 inch wc for the lower and 0 10 inch wc for the upper pressure setting The needle in this photo indicates a negative building pressure During correct operation the indicating needle will remain between or near the setting needles Pressure Indicating Needle Pressure Setting Needles Pressure Setting Knobs Photohelic Gauge External Signal a modulating spring return actuator is used to
34. hort on 9 Short Off Long Off Call for Call for No call cooling L1 for Outdoor N A cooling cooling temperature lockout Supply Drain Drain tcn L2 solenoid solenoid N A pen Drain open closed z solenoid closed Supply L3 Cooling Cooling solenoid Flow test on off locked mode active closed Model MSX Make Up Air BJ Troubleshooting Blower Does Not Operate Proper supply power at main disconnect 24 VAC between terminals R and X 24 VAC between terminals G and X 24 VAC across terminals 3 and X 24 VAC across terminals 4 and X 24 VAC across A2 and A1 on supply contactor ST1 EJ Model MSX Make Up Air Check main voltage See Blower Start Up Step 1 Main Disconnect DS1 Off Turn Main Disconnect DS1 On Primary fuses blown Replace fuses Main Transformer TR1 Defective Replace transformer Supply Switch S2 Off Turn Supply Switch S2 On Fire System Contact FSC tripped not installed Correct Replace Supply Fan Overload ST1 OL tripped Reset and check motor amps Reference Blower Start Up 4 Optional Exhaust Fan Interlocks ST2 ST5 open Correct Replace Optional Freeze Protection RT4 Tripped Reset Optional Damper Limit Switch DL1 holding Wait for actuator to open fully or adjust limit switch Optional Damper Limit Switch jumper missing Install jumper Reference the unit s ladder diagram for terminals Fan Relay RF is not ene
35. interval Auto Drain Relay optional assures supply pump does not operate during drain interval Allows pump to operate in cooling mode Cooling Timer optional allows for automatic draining of the evaporative cooling system based on time schedule Dirty Filter Switch optional monitors filter pressure drop turns on indicating light when pressure drop is above field adjustable set point Model MSX Make Up Air Start Up Checklist Start Up Checklist Unit Model Number e g MSX 120 H32 DB Unit Serial Number e g 10111000 Start Up Date Start Up Personnel Name Start Up Company Phone Number Pre Start Up Checklist check boxes as items are completed Check tightness of all factory wiring connections Verify control wiring wire gauge Hand rotate blower to verify free rotation Verify supply voltage to the main disconnect Verify the supply gas pressure O Verify remote controls wiring O O O O O Start Up Blower Checklist refer to Blower Start Up section for further detail O Check line voltage L1 L2 L2 L3 L1 L3 O Check blower rotation O Check for vibration O Supply fan RPM RPM O Motor nameplate amps Amps O Actual motor amps Amps O Actual CFM delivered CFM Optional Accessories refer to Blower Start Up section Step 6 for further detail O Heating Inlet Air Sensor Actual Setting Typical setting 60 70 F 15 21 C O Cooling Inlet Air Sensor Actual Setting
36. loat Turn on the water supply and allow the sump tank to fill Adjust the float valve to shut off the water supply when the sump is filled to within 1 inch of the bottom of the overflow 4 Break in the Media Open the bleed off valve completely and saturate the media with the blower s off for no less than 20 minutes A jumper will need to be installed in the control center to power the evaporative pumps with the blower s off Reference the unit s ladder diagram to determine proper terminals 5 Check the Flow Rate The pumps should provide enough water to saturate the media in 45 to 60 seconds Consult the factory if adequate flow is not achieved 6 Adjust the Water Bleed Off Rate The water bleed off rate is dependent on the water s mineral content The bleed off should be adjusted based on the media s mineral deposits after two weeks of service 7 Set the Optional Auto Drain and Fill Set the auto drain fill timer and temperature settings Timer settings are t1 1 0 10min t2 0 4 60h Temperature is typically set to 45 F 7 C 8 Put the Unit into Service Remove the jumper and energize the blower s Verify proper operation IMPORTANT Check the media for minerals after two weeks of service and adjust the bleed off rate accordingly Threaded Float Adjustment Bleed Off Pump Valve Filter Supply Float Connection Valve Evaporative Cooler Set Up Temperature Setting cee L t2 se
37. low the roof an alternative method must be used to protect the lines from freezing IMPORTANT The supply solenoid Valve A is NOT the same as the drain solenoids Valve B and Valve C Make sure to use the proper solenoid for each location Check your local code requirements for proper installation of this type of system Auto Drain amp Flush Valves When provided by Greenheck GFC ASCO Number Pat Pat 2 re Postion Diameter aty 4 Number Number yp a 1 2 inch 461262 8210G2 Supply Closed 12 7 mm 1 Supply i 852178 461263 8262G262 Line Open 7 1 Drain iao ran Sump 3 4 inch 461264 8210G35 Drain Open 19 05 mm 1 Part numbers subject to change Evaporative Cooling with Auto Drain and Fill continued 1 Install the Water Supply Line Supply line opening requirements vary by unit size and arrangement and are field supplied Connect the water supply line to the float valve through the supply line opening in the evaporative cooling unit Install the 1 2 in normally closed solenoid Valve A in the supply line Install the 1 4 in normally open solenoid Valve B between the supply line and the drain line Refer to Auto Drain amp Fill Evaporative Piping drawing on previous page 2 Install the Drain Line Connect an unobstructed drain line to the sump drain overflow connection Install the 3 4 in normally open solenoid Valve C between the sump drain connection and
38. lug on the header that the blower is connected to Open the drain valve or cap on the other header 5 Turn on blower for 30 minutes Place mirror at discharge If the mirror fogs up repeat procedure until no fog appears on the mirror 6 After drying the coil wait a few minutes then repeat Step 5 7 Leave drains open and do not install plugs until beginning of cooling season Flushing Coils Greenheck recommends the use of inhibited glycol such as propylene or ethylene to flush water coils to protect against freezing Additionally the use of inhibited glycol provides corrosion protection The table below indicate the percentage of glycol required to prevent freezing in a coil at a given outdoor air freeze point Completely fill coil with solution Drain coil Residual glycol fluid per these concentrations can be left in the coil without concern of freezing Recovered fluid can be used to flush other coils Percent of Percent of Freeze Point Ethylene Propylene Glycol by Volume Glycol by Volume afo o ofo 25 4 o fa 16 9 20 3 16 30 8 43 er DBO B C o 34 37 60 a C o ss we oo 60 or KJ Model MSX Make Up Air C Reference Typical Control Center Layout 1 Primary Fuses provides proper fusing to low voltage transformer 2 Low Voltage Transformer provides low voltage to controls and optional evaporative co
39. n decrease greasing interval by 50 If extended grease lines are present relubricate while in operation only without endangering personnel For ball bearings operating relubricate until clean grease is seen purging at the seals Be sure not to unseat the seal by over lubricating For ball bearings idle add 1 2 shots of grease up to 2 inch bore size and 4 5 shots above 2 inch bore sizes with a hand grease gun e For roller bearings add 4 shots of grease up to 2 inch bore size and 8 shots for 2 5 inch bore size with a hand grease gun e Adjust relubrication frequency based on condition of purged grease A high quality lithium based grease conforming to NLGI Grade 2 consistency such as those listed here Mobil 532 Texaco Multifak 2 B Shell Alavania 2 Mobilux 2 Texaco Premium 2 Exxon Unirex 2 EZ Model MSX Make Up Air Filters Filter maintenance is generally limited to cleaning and replacement If aluminum mesh filters are installed they can be washed in warm soapy water An adhesive spray can be added to aluminum mesh filters to increase their efficiency If disposable filters are installed they can be checked by holding up to a light source If light cannot pass through the filter it should be replaced IMPORTANT When reinstalling filters be sure to install them with the airflow in the correct direction An airflow direction arrow is located on the side of the filters IMPORTANT Replacement
40. ng in the evaporative cooling unit Install a manual shutoff valve in the supply line as shown 2 install the Drain Line Connect an unobstructed drain line to the drain and overflow connections on the evaporative cooler A manual shut off valve by others is required for the evaporative cooler drain line _ AA A NAM MX MAN A trap should be used to prevent sewer gas from being drawn into the unit 3 Check Adjust Water Level Check the water level in the sump tank The water level should be above the pump intake and below the overflow Adjust the float as needed to achieve the proper water level Drain Trap ET Model MSX Make Up Air Evaporative Cooling with Auto Drain and Fill lt Supply wo Overflow Line VALVE A Supply Solenoid Normally Closed Sump Drain VALVE C Sump Drain Solenoid Normally Open ig ee Trap Drain Line gt Auto Drain amp Fill Evaporative Piping VALVE B Supply Line Drain Solenoid Normally Open IMPORTANT The supply line should be of adequate size and pressure to resupply the amount of water lost due to bleed off and evaporation The drain line should be the same size or larger than the supply line CAUTION All solenoids valves and traps must be installed below the roof to protect the supply water line from freezing If they cannot be installed be
41. oling controls 3 Low Voltage Fuse provides proper fusing to controls and optional evaporative cooling controls 4 Control Terminal Block provides wiring access to controls 5 Building Freeze Protection Timer optional prevents the discharge of cold air into the building 6 Fan Relay allows power to pass to energize motor starter 7 Supply Motor Starter 24 volt magnetic contacts for starting supply motor 8 Supply Overload provides electronic overload protection to supply motor 9 Auxiliary Contact optional provides one normally closed and one normally open contact for other equipment Dirty Filter Switch Common _ lt Normally Open ar Normally Closed CCW to Decrease Trip Point CW to Increase Trip Point Negative Pressure after the filters f A Positive Pressure before the filters gt A 10 11 12 14 15 16 17 Exhaust Fuses optional provides proper fusing for exhaust fan motor s Exhaust Motor Starter optional 24 volt magnetic contacts for starting exhaust motor Exhaust Overload optional provides electronic overload protection to exhaust motor Inlet Air Sensor optional outdoor air stat that automatically controls the cooling based on outdoor air temperature Cooling Relay optional allows power to pass to cooling controls Reset Timer optional resets cooling system to run a time
42. on DX Coil Piping 13 14 Optional Chilled Water Coil Piping 14 Optional Building Pressure Control 15 Start Up BloWer 1 ee 16 17 Optional Electric Heater 18 Optional Evaporative Cooling Recirculating 19 Optional Water Wizard 20 21 Operation Optional VAV Units 22 Optional Recirculating Units 23 Electrical v n na cai geese tee 2284 cnx wd 24 Optional Water Wizard 25 Troubleshooting BIOWGF oe scc beste od ei R R N a a eel et Pi sed we 26 Motor Overamps 27 Insufficient Too Much Airflow 28 Excessive Noise or Vibration 29 Optional Electric Heater 30 Optional Evaporative Cooling 31 Optional Water Wizard 32 Maintenance ROUTING cos caren EDB R aisar A askina 33 35 Folle R EAE a EA NEAR a 36 Reference Control Center Layout Dirty Filter Switch 37 Start Up Check List 38 Maintenance Log 39 Warranty 0 0 cee eee ee eee Backcover Clearance to Combustibles Service Clearances Floor Top Sides Insulated 0 inches 0 inches 0 inches 0 inches Units 0 mm 0 mm 0 mm 0 mm Non Insulated 0inches 6inches 6inches 6 inches Units 0 mm 152 4 mm 152 4 mm 152 4 mm Clearance to combustibles is defined as the minimum di
43. on Wattage and British Thermal Unit BTU The heating elements may be used on voltages lower than the design voltage of the heater however the wattage and BTU output will be reduced to the percentages listed in the table below De rated Wattage For Low Voltage Model MSX Make Up Air J Installation Evaporative Cooler Piping optional Evaporative Cooling with Recirculating Pump a Supply Line Supply Line Valve Normally Closed TP a OS SieHiGbl Drain Line Recirculating Evaporative Piping Drain Line Valve Normally Open IMPORTANT All supply solenoids valves and all traps must be below the roof line or be otherwise protected from freezing IMPORTANT The supply line should be of adequate size and pressure to resupply the amount of water lost due to bleed off and evaporation The drain line should be the same size or larger than the supply line CAUTION Provisions must be taken to prevent damage to the evaporative cooling section during freezing conditions The sump drain lines and supply lines must be drained prior to freezing conditions or an alternate method must be used to protect the lines and media 1 Install the Water Supply Line Supply line opening requirements vary by unit size and arrangement and are field supplied Connect the water supply line to the float valve through the supply line openi
44. on the wheel causing imbalance When this occurs the wheel and housing should be cleaned to assure proper operation When replacing V belts on multiple groove drives all belts should be changed to provide uniform drive loading IMPORTANT Do not install new belts on worn sheaves If the sheaves have grooves worn in them they must be replaced before new belts are installed Belt Span 64 Deflection Belt Span Belt Tension Drive Alignment A Model MSX Make Up Air ER Maintenance Routine continued Bearings The bearings for Greenheck fans are carefully selected to match the maximum load and operating conditions of the specific class arrangement and fan size The instructions provided in this manual and those provided by the bearing manufacturer will minimize any bearing problems IMPORTANT Lubricate bearings prior to periods of extended shutdowns or storage and rotate shaft monthly to aid in corrosion prevention If the fan is stored more than three months purge the bearings with new grease prior to start up Recommended Bearing Lubrication Schedule in Months Fan Bearing Bore Size inches ail 20 6 6 6 6 so 6 6 6 5 7 6 5 4 3 1006 amp 3 8 4 1250 5 3 2 1 s0 5 2 1 1 05 0 25 Suggested initial greasing interval is based on 12 hour per day operation and 150 F 66 C maximum housing temperature For continuous 24 hour operatio
45. or a small leak Break the vacuum with a charge of dry nitrogen or other suitable gas and recheck for leaks If no leaks are found continue vacuuming the coil until the desired vacuum is reached 8 Install the Drain Line Connect an unobstructed drain eons line to the drain pan A trap should be used to prevent sewer gas from being Drain Trap drawn into the unit IMPORTANT All traps must be installed below the roof line or be otherwise protected from freezing EE Model MSX Make Up Air Installation of Chilled Water Coil Piping optional IMPORTANT Guidelines for the installation of the cooling coil have been provided to insure proper performance of the coils and their longevity These are general guidelines that may have to be tailored to meet the specific requirements of any one job As always a qualified party or individual should perform the installation and maintenance of the coil Protective equipment such as safety glasses steel toe boots and gloves are recommended during the installation and maintenance of the coil When installing couplings do not apply undue stress to the connection Use a backup pipe wrench to avoid breaking the weld between the coil connection and the header All field piping must be self supporting System piping should be flexible enough to allow for the thermal expansion and contraction of the coil 1 Verify Coil Hand Designation Check the coil hand designation
46. performed before the blower is run NOTE For maintenance issues associated with variable frequency drives consult the drive s manual supplied with the unit The drives are programmed at the factory and should not need any adjustment during installation and start up For kitchen applications the drive may be located in the kitchen or in the unit Variable Volume Operation The variable volume option is recommended when a building s exhaust volume may vary This option enables the make up air volume to track with the exhaust volume providing only the amount of make up air required Control strategies include 2 speed and modulating blowers Before the unit is left in service the variable volume control system should be tested 2 Speed A variable frequency drive VFD is used to control air volumes The VFD can be switched to low or high speed from a remote control panel Turn the fan speed switch on the remote control panel to each position and confirm that the fan speed adjusts accordingly Modulating Potentiometer Control a variable frequency drive is controlled by input from a remote m speed selector potentiometer a This unit allows easy manual a adjustment of make up air volumes To test potentiometer operation turn the potentiometer Sd o to the two extremes With variable volume make sure the fan goes to maximum and minimum speed When the potentiometer is at 0 the ores
47. ram Menu NOTE The enter key must be pressed to save the new minimum cooling temperature 8 Exit Program Mode After 15 seconds of idle time the controller will exit Program Mode NOTE The Freeze Temperature is preset to the factory recommended 45 F Steps 9 11 should only be completed if the Freeze Temperature needs adjustment NOTE The Freeze Temperature is the temperature at which the supply solenoid closes and the drain solenoid opens to drain the supply line preventing possible freeze damage A drain solenoid is required for this option 9 Enter Program Mode Press and hold the Enter Key for three seconds The display will read Pro when Program Mode is active Program Display 10 Adjust the Freeze Temperature While in Program Mode use the Up and Down O Keys to navigate through the Menu Options until O Frt is displayed amp v Press the Enter Key to access the selected Menu Option Freeze Temperature setting Display Use the Up and Down Keys to adjust the Freeze Temperature setting as needed Press the Enter Key to set the Freeze Temperature and return to the Program Menu NOTE The enter key must be pressed to save the new freeze temperature 11 Exit Program Mode After 15 seconds of idle time the controller will exit Program Mode Model MSX Make Up Air BX Check Operation VAV Units optional NOTE Blower Start Up Steps 1 5 should be
48. replace filters Reference Filter Maintenance in the Maintenance section Leaks in ductwork Yes No Repair leaks Belt slipping Yes Yes Replace or tighten belt Reference V Belt Maintenance in the Maintenance section Everything is working properly consult factory Too Much Airflow Blower speed too high Adjust drives as needed Reference Blower Start Up Step 5 Filters not in place Insufficient external static pressure Increase external static pressure Everything is working properly consult factory EJ Model MSX Make Up Air Troubleshooting Excessive Noise or Vibration Belts worn or loose Sheaves aligned Yes Wheel unbalanced Bearings worn or need lubrication Yes Yes Yes Yes Replace worn belts or tighten loose belts Reference V Belt Drive Maintenance in the Maintenance section Align sheaves Reference V Belt Drive Maintenance in the Maintenance section Clean and or balance wheel s Replace worn bearings or lubricate bearings as needed Reference Bearing Maintenance in the Maintenance section Adjust wheel s or inlet At this time noise and vibration should be at acceptable levels Model MSX Make Up Air EX Troubleshooting Electric Heater Does Not Operate optional Supply fan must be on for heater to operate 24 VAC between terminals W1 and X Heat Switch S4 Off Turn Heat Switch S4 On Heat Switch not wire
49. rgized Check for loose connection Repair or replace relay Broken fan Bbelt Replace Reference Maintenance section Defective motor or capacitor Repair Replace Blown motor fuse Replace One or more legs of 3 phase is out Restore missing legs At this time the supply contactor ST1 should pull in passing power to the supply motor and the blower should start Troubleshooting Motor Overamps Air volume too high Actual static pressure lower than design Blower rotation correct Motor voltage correct Yes Motor horsepower too low Shorted windings in motor Yes Everything is working properly consult factory Yes Yes No Yes Yes Adjust drives or increase external static pressure as needed Reference Blower Start Up Step 5 Adjust drives to reduce blower RPM Reference Blower Start Up Step 5 Reverse blower rotation Reference Blower Start Up Step 2 Provide proper power supply Reference Blower Start Up Step 1 Resize motor Replace motor Model MSX Make Up Air Troubleshooting Insufficient Airflow Damper s not fully opened LE Adjust damper linkage s or replace faulty actuator s Damper actuators may take a few minutes to open System static losses too high Reduce losses by improving ductwork Blower speed too low Yes Adjust drives as needed Reference Blower Start Up Step 5 Filters dirty or clogged Yes Clean or
50. s drive motor base and accessories for tightness WARNING Disconnect and lock out all power and gas before performing any maintenance or service to the unit Failure to due so could result in serious injury or death and damage to equipment SPECIAL EQUIPMENT REQUIRED Required and recommended tools Equivalent products may be used Manufacturer Fluke Model 177 Phone 1 800 44 FLUKE www fluke com Voltage amp Amperage Meter Manufacturer Model Phone www fluke com Manufacturer Model Phone www fluke com Manufacturer Model Slack Tube Phone 1 219 897 8000 www dwyer inst com Manufacturer Monarch Model Pocket Tach 100 Phone 1 800 999 3390 www monarchinstrument com Thermometer 1 800 44 FLUKE Micro Amp Meter 1 800 44 FLUKE Dwyer U Tube Manometer Tachometer WARNING Check the housing blower and ductwork for any foreign objects before running the blower 1 Check the Voltage Before starting the unit compare the supplied voltage hertz and phase with the unit and motor s nameplate information Voltage Hertz Phase VOLTS HZ PH SUP HP EXH HP MCA MOP Electrical Nameplate ETA Model MSX Make Up Air 2 Check the Blower Rotation Open the blower access door and run the blower momentarily to determine the rotation Arrows are placed on the blower scroll to indicate the proper direction or referenc
51. servicing 2 The rotation of the wheel is critical It must be free to rotate without striking or rubbing any stationary objects 3 Motor must be securely and adequately grounded 4 Do not spin fan wheel faster than maximum cataloged fan rpm Adjustments to fan speed significantly effects motor load If the fan RPM is changed the motor current should be checked to make sure it is not exceeding the motor nameplate amps 5 Do not allow the power cable to kink or come in contact with oil grease hot surfaces or chemicals Replace cord immediately if damaged 6 Verify that the power source is compatible with the equipment 7 Never open blower access doors while the fan is running IMPORTANT All factory provided lifting lugs must be used when lifting any unit Failure to comply with this safety precaution could result in property damage serious injury or death WARNING Disconnect all electrical power to the fan and secure to the OFF position prior to inspection or servicing Failure to comply with this safety precaution could result in serious injury or death WARNING 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 Model MSX Make Up Air E Receiving Upon receiving the product check to make sure all i
52. stance required between the heater and adjacent combustible surfaces to ensure the adjacent surface s temperature does not exceed 90 degrees above the ambient temperature Recommended Minimum Service Clearances 42 inches 1066 8 mm on the controls side of the unit Housing 32 and less 48 inches 1219 2 mm on the controls side of the unit Clearances for component removal such as evaporative cooler media may be greater than the service clearances listed Housing 35 and higher A Installation of Indoor Unit 1 Install Hangers Install threaded hangers from ceiling supports When locating hangers allow enough room to open access panel s Two nuts must be used on the end of each threaded hanger Ceiling supports are supplied by others 2 Install Unit Using sheet metal screws attach the weatherhood thru wall filter section to the blower burner section The flange on the weatherhood thru wall filter section should overlap the flange on the blower burner section Raise the assembled unit into place Using two nuts per hanger fasten the unit supports to the hangers under the unit Appropriate unit supports such as the optional Greenheck hanging bracket kit or c channel and angle iron supplied by others should be used Ductwork Ceiling Supports Using self tapping screws attach ductwork to unit In order to prevent the unit from swinging and to provide a safe environment for service and maint
53. tems are accounted for by referencing the bill of lading to ensure all items were received Inspect each crate for shipping damage before accepting delivery Notify the carrier if any damage is noticed The carrier will make notification on the delivery receipt acknowledging any damage to the product All damage should be noted on all the copies of the bill of lading which is countersigned by the delivering carrier A Carrier Inspection Report should be filled out by the carrier upon arrival and reported to the Traffic Department If damaged upon arrival file claim with carrier Any physical damage to the unit after acceptance is not the responsibility of Greenheck Fan Corporation Unpacking Verify that all required parts and the correct quantity of each item have been received If any items are missing report shortages to your local representative to arrange for obtaining missing parts Sometimes it is not possible that all items for the unit be shipped together due to availability of transportation and truck space Confirmation of shipment s must be limited to only items on the bill of lading Handling Units are to be rigged and moved by the lifting brackets provided or by the skid when a forklift is used Location of brackets varies by model and size Handle in such a manner as to keep from scratching or chipping the coating Damaged finish may reduce ability of unit to resist corrosion Storage Units are protected against damage
54. to ensure that it matches the system Coils are generally plumbed with the supply connection located on the bottom of the leaving air side of the coil and the return connection at the top of the entering air side of the coil This arrangement provides a counter flow heat exchanger and positive coil drainage 2 Check the Coil for Leaks Pressurize the coil to 100 psig with dry nitrogen or other suitable gas The coil should be left pressurized for a minimum of 10 minutes If the coil holds the pressure the hook up can be considered leak free If the pressure drops by 5 psig or less re pressurize the coil and wait another 10 minutes If the pressure drops again there is likely one or more small leaks which should be located and repaired Pressure losses greater than 5 psig indicate a large leak that should be isolated and repaired 3 Connect the Supply and Return Lines Connect the supply and return lines as shown above 4 Install the Drain Line Connect an unobstructed drain line to the drain pan EEN A A trap should be installed Drain Trap Hot Return Connection Leaving Aira Entering Air q O Cold Supply Connection to prevent sewer gas from being drawn into the unit IMPORTANT All traps must be installed below the roof line or be otherwise protected from freezing Installation of Building Pressure Control optional 1 Mount Pressure Tap Using the factory provided bracket
55. ttings Q sav t1 settings u eee Evaporative Timer Evaporative Freeze Protection Model MSX Make Up Air EX Start Up Water Wizard optional L1 L2 L3 Function Key Enter Key Water Wizard User Interface Key Function Description 1 Open the Solenoid Confirm that the manual water supply valve is closed Press and hold the Function Button for one second L3 will begin blinking short on long off indicating that Flow Test Mode is active and the supply solenoid is open 2 Set the Water Pressure the solenoid open set the supply water pressure to the correct setting see table below Use the manual supply valve to adjust the supply pressure A pressure gauge is provided between the manual supply valve and the media WARNING Opening the manual supply valve will allow water to pass to the media Be sure the sump is safely draining before opening the manual supply valve NOTE The manual supply valve ships closed and must be adjusted for proper performance Recommended Water Pressure Chart Housing Media Width Water Pressure Size inches in wc MSX H12 30 20 43 36 MSX H22 60 61 66 72 MSX H32 96 42 MSX H35 120 61 MSX H38 180 37 MSX H42 216 51 Multiple media sections Values represent total media width NOTE The recommended water pressure is based on media width Refer to the table provided for proper water press
56. unting 1 Locate Equipment Support s Position equipment support s on the roof reference the CAPS submittal for placement of equipment support s in relation to the unit Verify that all unit supports are level shim if necessary Attach equipment support to the roof remove metal cover flash to wooden nailer and reinstall cover Equipment Support Equipment Support 2 Apply Sealant Apply an appropriate sealant around the airstream opening to create an air tight seal A 3 Set Evaporative Cooling Module Use a crane and a set of spreader bars hooked to the factory lifting lugs to lift and center the module on the equipment support s The flange on the evaporative cooler should overlap the flange on the unit Placing Evaporative Module NOTE The use of all lifting lugs and a set of spreader bars is mandatory when lifting the evaporative cooling module 4 Secure Cooling Module to Unit Use self tapping screws to fasten the cooling module to the base unit along the top and down both sides Fasten at the top through the flanges To fasten the sides the media must be removed To remove the media first remove the access panel on the evaporative module and disconnect the evaporative pump s The media will now slide out With the media removed you can access the side fastening points inside the evaporative module With all the screws in place reinstall the media reconnect the pumps and reinstall the access
57. ure settings 3 Break in Media Leave the supply solenoid open to saturate and break in media for 20 minutes with the blower off 4 Close Solenoid the pressure set press the Function Key for one second to deactivate Flow Test Mode and allow the supply solenoid to close E Model MSX Make Up Air 5 Check Media Start the cooling cycle and check the media after one hour of operation If the media is continuously dry or if too much water is draining from the sump tank refer to Troubleshooting Water Wizard Steps 6 through 8 are provided to adjust the minimum cooling temperature The minimum cooling is preset to the factory recommended 75 F 24 C Only adjust if needed The inlet air sensor function overrides and shuts down the evaporative cooler if the outside temperature falls below the minimum cooling temperature 6 Enter Program Mode ea Press and hold the Enter Key for three seconds The display will read Pro when Program Mode is active Program Display 7 Adjust the Minimum Cooling Temperature While in the O Program Menu use the Up and Down Keys to navigate the Menu Options until toF is displayed Press the Enter Key to access the selected Menu Option setting Minimum Cooling Temperature Display Use the Up and Down Keys to adjust the Minimum Cooling Temperature as needed Press the Enter Key to save the Minimum Cooling Temperature setting and return to the Prog
58. urned to our factory transportation prepaid Motors are warranted by the motor manufacturer for a period of one year Should motors furnished by Greenheck prove defective during this period they should be returned to the nearest authorized motor service station Greenheck will not be responsible for any removal or installation costs As a result of our commitment to continuous improvement Greenheck reserves the right to change specifications without notice Greenheck Catalogs MSX provide additional information AMCA Publication 410 96 Safety Practices for Users and describing the equipment fan performance available Installers of Industrial and Commercial Fans provides accessories and specification data additional safety information This publication can be obtained from AMCA International Inc at www amca org H GREENHECK Building Value in Air Phone 715 359 6171 Fax 715 355 2399 E mail gfcinfo greenheck com Web site www greenheck com 40 470658 Model MSX Make Up Air Rev 3 May 2011 Copyright 2011 Greenheck Fan Corporation
59. utomatic adjustment of make up air volumes based on varying cooking loads Check Operation Recirculating Units optional NOTE Blower Start Up steps 1 5 should be performed before the blower is run Recirculation Operation The recirculation operation option is recommended when the ventilation equipment provides the primary source of heating for the space Recirculation can vary from 100 return air to 100 outside air Control strategies include 2 position and modulating dampers Before the unit is left in service the recirculation control system should be tested 2 Position Damper A 2 position spring return actuator is used to control the return air amounts The damper moves from open to closed If power is cut to the unit the outdoor air damper will Seer ES fail to close a mna Turn the recirculating switch o on the remote control panel to each position and confirm that the return air damper adjusts adu accordingly The damper actuator CE may take a few minutes to open 2 Position or close Damper Control DIRTY FILTERS Modulating Potentiometer Control a modulating spring return actuator is used to control the return air amounts The return air damper modulates from fully open to fully closed based on a signal from a remote potentiometer To test potentiometer operation turn the potentiometer to the two Demon extremes Confirm t
60. zed Check for loose connections Repair or replace relay At this time the evaporative cooler pumps should be on Water Blows through Evaporative Cooler Are the headers in place and located near the entering air side of the media Replace headers and or move the headers Reference Evaporative Cooler Start Up Step 1 Water supply greater than evaporation and bleed off rate Use the main supply valve to reduce the supply of water Air velocity greater than specified Reduce the air velocity through the media Reference Blower Start Up Step 5 At this time the evaporative cooler should be operating without water blowing through A Model MSX Make Up Air EX Troubleshooting Water Wizard Improper Water Supply NOTE NOTE If the water supply is too low the media will Changing the On Time Factor by 1 will change the continuously appear dry water supply by approximately 3 NOTE IMPORTANT If the water supply is too high the media will be The enter key must be pressed to save the new On saturated and excessive water will be draining from Time Factor the sump tank 4 Exit Program Mode After 15 seconds of idle time the controller will Some water drainage is desired to keep the media automatically exit Program Mode flushed but it should be minimized to utilize the Water Wizard 1 Adjust the Manual Supply Valve Adjust the manual supply valve refer to Start Up Water Wizard If th

Greenheck Fan 470658 MSX Ventilation Hood User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents