Greenheck MSX (470658) User Manual

Installation, Operation and Maintenance ManualPlease read and save these instructions. Read carefully before attempting to assemble, install, operate

10Modular Supply Make-Up Air Unit®Installation Evaporative Cooler Piping (optional)Recirculating Evaporative PipingIMPORTANTAll supply solenoids, valv

11Modular Supply Make-Up Air Unit®Evaporative Cooling with Auto Drain and FillSupply LineVALVE BSupply Line Drain Solenoid(Normally Open)Sump Overflow

12Modular Supply Make-Up Air Unit®Installation of Water WizardTM (optional)Evaporative Cooling with the Water Wizard™1. Install Normally Closed Suppl

13Modular Supply Make-Up Air Unit®5. Mount the Remote Sensing Bulb (by others). The expansion valve’s remote sensing bulb should be securely strappe

14Modular Supply Make-Up Air Unit®8. Install the Drain Line. Connect an unobstructed drain line to the drain pan. A trap should be used to prevent se

15Modular Supply Make-Up Air Unit®6 in. min.6 in. min.DrainTrapIMPORTANTAll traps must be installed below the roof line or be otherwise protected from

16Modular Supply Make-Up Air Unit®Start-Up ChecklistUnit Model Number _______________________________ (e.g. MSX-120-H32-DB)Unit Serial Number _____

17Modular Supply Make-Up Air Unit®Start-Up - BlowerPre Start-Up CheckRotate the fan wheel by hand and make sure no parts are rubbing. Check the V-belt

18Modular Supply Make-Up Air Unit®Start-Up - Electric Heater (optional)Pre Start-Up CheckCheck all electrical connections. Tighten any loose connectio

19Modular Supply Make-Up Air Unit®Optional EconomizerThe following economizer sequences will function to modulate the outdoor and return air dampers t

2Modular Supply Make-Up Air Unit®The unit should be stored at least 3½ in. (89 mm) off the floor on wooden blocks covered with moisture proof paper or

20Modular Supply Make-Up Air Unit®Start-Up - Evaporative Cooling Recirculating (optional)1. Check the Installation. The media may have been removed d

21Modular Supply Make-Up Air Unit®Water Wizard™ User Interface Key Function DescriptionRecommended Water Pressure ChartHousing SizeMedia Width (inches

22Modular Supply Make-Up Air Unit® 9. Enter Program Mode. Press and hold the Enter Key for three seconds. The display will read “Pro” when Program

23Modular Supply Make-Up Air Unit®Building Pressure Control — a variable frequency drive is controlled according to input from a pressure sensing devi

24Modular Supply Make-Up Air Unit®Check Operation - Recirculating Units (optional)NOTEBlower Start-Up, steps 1-5 should be performed before the blower

25Modular Supply Make-Up Air Unit®Operation - ElectricalElectrical Sequence1. Exhaust Fan Contact (S1) Closed (optional) • Power passes through N.C

26Modular Supply Make-Up Air Unit®Drain ModeDrain Mode locks open the drain solenoid and drains the supply line between the supply solenoid and the me

27Modular Supply Make-Up Air Unit®Proper supply power at main disconnect24 VAC betweenterminals R and X?24 VAC betweenterminals G and X?NoNoNoNoNoNoY

28Modular Supply Make-Up Air Unit®TroubleshootingMotor OverampsAir volume too high?Motor horsepower too low?Motor voltage correct?Blower rotation corr

29Modular Supply Make-Up Air Unit®TroubleshootingToo Much AirflowBlower speed too high?Adjust drives as needed.(Reference Blower Start-Up Step #5)Insuf

3Modular Supply Make-Up Air Unit®Table of ContentsInstallationClearance to Combustibles/Service Clearances . . 4Indoor Unit ...

30Modular Supply Make-Up Air Unit®TroubleshootingExcessive Noise or VibrationSheaves aligned?Wheel unbalanced?Belts worn or loose?YesYesNoNoYesBearing

31Modular Supply Make-Up Air Unit®TroubleshootingElectric Heater Does Not Operate (optional)Supply fan must be on for heater to operate24 VAC between

32Modular Supply Make-Up Air Unit®Evaporative Cooler does not Operate (Recirculating pump)Supply fan must be on for cooler to operateTroubleshootingWa

33Modular Supply Make-Up Air Unit®NOTEIf the water supply is too low, the media will continuously appear dry.NOTEIf the water supply is too high, the

34Modular Supply Make-Up Air Unit®Maintenance - RoutineCAUTIONLock-out the gas and the electrical power to the unit before performing any maintenance

35Modular Supply Make-Up Air Unit®FiltersFilter maintenance is generally limited to cleaning and replacement.If aluminum mesh filters are installed, th

36Modular Supply Make-Up Air Unit®Maintenance - FallEvaporative CoolersThe water should be shut off and all the lines drained when the outside tempera

37Modular Supply Make-Up Air Unit®ReferenceTypical Control Center Layout7846911121051421318311615 17 1. Primary Fuses — provides proper fusing to low

38Modular Supply Make-Up Air Unit®Maintenance Log Date ___________________Time _____________ AM/PMNotes: _____________________________________________

39Modular Supply Make-Up Air Unit®Maintenance Log Date ___________________Time _____________ AM/PMNotes: _____________________________________________

4Modular Supply Make-Up Air Unit®Installation of Arrangement DB / HZ / UB1. Install Curb and/or Equipment Support(s). Position curb/equipment supp

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.Specific Greenheck product

5Modular Supply Make-Up Air Unit®Supply Air Ductwork (Arrangement DB only)Sealant Ductwork4. Install Unit. Use a crane and a set of spreader bars hoo

6Modular Supply Make-Up Air Unit®7. Install Supply Unit. Use a crane and a set of spreader bars hooked to the factory lifting lugs to lift and center

7Modular Supply Make-Up Air Unit®Installation of Evaporative Cooling Module (optional)NOTESmall evaporative coolers ship attached to the base unit and

8Modular Supply Make-Up Air Unit®Installation of Electrical WiringIMPORTANTBefore connecting power to the unit, read and understand the following inst

9Modular Supply Make-Up Air Unit®WARNINGElectrical Shock Hazard! Disconnect all power sources before doing any work on the unit.Effect of Low Voltage