Greenheck Fan DGX Part #470655 User's Manual
Contents
1. DGX Industrial Space Heating Reference Typical Control Center Layout 1 Supply Motor Starter 24 volt magnetic contacts 8 for starting supply motor 2 Supply Overload provides electronic overload 9 protection to supply motor 3 Low Voltage Transformer provides low voltage to 10 fan heat enable controls 4 Control Terminal Block provides wiring access to 11 controls 5 Fan Relay allows power to pass to energize 12 motor starter 6 Auxiliary Contact optional provides one 13 normally closed and one normally open contact for other equipment 14 7 Dirty Filter Switch optional monitors filter pressure drop turns on indicating light when 15 pressure drop is above field adjustable set point Dirty Filter Switch Common z 4 Normally Open Normally Closed CCW to decrease trip point CW to increase trip point Negative Pressure after the filters W YA Positive Pressure before the filters EI DGX Industrial Space Heating Heat Relay allows power to pass to heating controls Heating Terminal Block provides wiring access to heating controls Flame Safeguard monitors flame shuts down unit when unsafe conditions are detected High Limit prevents unit from discharging air above a set point Low Voltage Transformer reduces voltage to Maxitrol system Amplifier controls modulating valv2. Supply Gas Line 4 Pipe the Optional Vent Line If an optional vent line is located between the safety shutoff valves it must be piped to the outdoors WARNING Reference the National Fuel Gas Code for additional vent line requirements Vent Line Solenoid to outdoors AZE Vent Line o Il lt to burner IDA i 9 LT x Safety Shut Off Valves lt from supply Optional Vent Line 5 Test the System for Leaks Check both the supply lines and the factory piping for leaks Apply a soap and water solution to all piping and watch for bubbling which indicates a leak WARNING NEVER test for a gas leak with an open flame NOTE The factory piping has been checked for leaks but should be rechecked due to shipping and installation 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 Maintenance V Belt Drives section Check fasteners set screws and locking collars on the fan bearings drive motor base and accessories for tightness WARNING Disconne
3. DESIGN AT AT NORMALE EXTERNAL STATIC PRESSURE PRESSION STATIQUE EXTERIEURE L Direct Gas Nameplate Start Up Direct Gas continued 7 Set the Minimum Firing Rate sd Dis connect and isolate one of the wires running to the IMPORTANT modulating valve to send the unit to its minimum firing rate Set the minimum firing rate by adjusting the needle Setting the maximum firing rate during mild weather valve as shown in the diagrams on this page conditions may cause the high limit to trip out during x x extreme conditions requiring manual resetting After setting the minimum firing rate shut off the pilot to ensure that the flame safeguard can still read the main flame signal Reconnect the wire to the modulating The minimum setting for the maximum firing rate may valve and open the pilot shut off valve be higher than required This is acceptable the burner IMPORTANT will still modulate as needed The proper setting for the minimum firing rate results in a small ribbon of continuous flame across the entire Gas trains are equipped with either a separate burner regulator and modulating valve or with a combined modulating regulator IMPORTANT Do not allow the disconnected wire to come in contact with a potential ground Damage to the Clockwise rotation increases the temperature rise amplifier or transformer could result counterclockwise rotation decreases the temperature rise On
4. Rooftop Diffuser Height l6 DGX Industrial Space Heating 2 Install TSCP When installing the TSCP Space Heat Remote Panel the location is critical to performance of the Greenheat System The TSCP should be installed five to six feet above the floor It is recommended that the TSCP be installed on an outside wall in the space and close to any source of infiltration such as dock doors DO NOT install the TSCP in the blast area of the heater or near any other source of heat IMPORTANT DO NOT install the TSCP in the blast area of the space heater or near any other source of heat Recommended TSCP Location Blast Area TSCP Location 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 Electrical Code ANSI NFPA 70 and any local codes that may apply In Canada wiring should be done in accordance with the Canadian Electrical Code CAUTION If replacement wire is required it must have a temperature rating of at least 105 C except for energy cut off or sensor lead wire which must be rated to 150 C IMPORTANT The equipment must be properly grounded Any wiring running through the unit in the airstream must be protected by metal co
5. WO PRESSURE DROP PSI PERTE MIN DE PRESSION PERTE MAX DE PRESSION DANS LE BRULEUR DANS LE BRULEUR TYPE OF GAS DESIGN AT E NATURE DU GAZ AT NORMALE QUIPPED FOR AGAINST EXTERNAL STATIC PRESSURE SCFM W C CONCU POUR CONTE PRESSION STATIQUE EXTERIEURE p Type of gas Direct Gas Nameplate 2 Check the Pilot Gas Pressure Check the pilot gas pressure The recommended gas pressure is 3 inches wc Adjust the pilot regulator as needed See the Gas Train Layout in the Reference section for the location of the pilot pressure test port and pilot regulator 3 Check the Optional High and Low Gas Pressure Switches Check the settings on the high and low gas pressure switches The high pressure setting is typically 8 inches wc and the low pressure is setting is typically 3 inches wc The switches are set at the factory and should not need adjustment Adjust the setting if needed See the Gas Train Layout diagram in the Reference section for the high and low pressure switch location The purpose of the high and low gas pressure switches is to automatically shutdown the burner if the inlet gas pressure is too low for the burner to safely light or if the manifold pressure is too high for the burner to operate safely Start Up Direct Gas e 100 Outside Air IMPORTANT Proper air velocity over the burner is critical on direct fired gas units If the air velocity is not within t
6. Power passes through N O contact on the space heat relay RS which is energized and closed Power passes through terminal G 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 is closed if the temperature has remained above the set point Power passes to and energizes optional inlet damper D1 which opens Power passes to and energizes fan relay RF Power passes to N O contact on fan relay RF which closes once the fan relay RF is activated 16 DGX Industrial Space Heating 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 Power passes through N O contact on fan relay RF which is energized and closed Power passes to and energizes the heat relay RH Power passes through N O contact on heat relay RH which is energized and closed Power passes to and energizes terminal 5 on the Flame Safeguard FSG Power passes through N C contact on high temperature limit control HLC1 which remains closed if the temperature has remained below the HLC1 set point Power passes through optional N C and N O high and low gas pressure contacts PS4 and PS3 which are both closed if the gas pressure is within the set range Power passes to terminal 6 on the Flame Safegu
7. RPM is flammable vapors and liquids in open changed Me motor ument SHE LIES checked Ta containers in the vicinity of this appliance is make sure it is not exceeding the motor nameplate hazardous amps 5 Do not allow the power cable to kink or come in WARNING ol grease Kals Rege Improper installation adjustment alteration Replace cord immediately if damaged Service Ot maintenance CASS i 6 Verify that the power source is compatible with the property damage injury or death Read the installation operating and maintenance T Never open blower access doors while the fan is instructions thoroughly before installing Or LA servicing this equipment H DGX Industrial Space Heating Ii 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 Electrical Code CEC in Canada LISTED Intertek 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 servicing FOR YOUR SAFETY If you smell gas 1 Open windows Receiving Upon receiving the product check to make sure all items are accounted for by referencing the bill of lading to ensure all items were received Inspe
8. 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 occur Immediately remove the original rust preventive coating with petroleum solvent and clean with
9. is critical on direct fired gas units If the air velocity is not within the unit specifications the unit will not operate efficiently may have sporadic shutdowns and may produce excessive carbon monoxide CO or other gases 4b Set the Burner Air Pressure Differential With the fan running and discharging 70 F air connect a U Tube manometer to the outer sensing probes see below and measure the static pressure across the burner Outer Sensing Probes 0 5 0 8 in WC Batfle a The proper static pressure should be between 0 5 and 0 8 inches wc On units with motors 15 hp and less adjust the fan rpm by means of the adjustable drive pulley For units with motors greater than 15 hp the drive pulley is fixed To change the fan rpm Airflow 5 Set the Low Fire Time Delay Set the low fire time delay to 75 of its maximum setting See below for location of the time delay setting 6 Set the Maximum Firing Rate Monitor the unit s actual temperature rise by placing a thermocouple in the unit s inlet and a second in the discharge three duct diameters downstream of the burner Send the unit to maximum fire by disconnecting and isolating the proper wire on the Maxitrol 14 amplifier While monitoring the units temperature rise set the maximum firing rate by adjusting the separate regulator or combined regulator shown on page 13 until the designed temperature
10. 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 511 Rust Preventive 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 H Table of Contents Installation Clearance to Combustibles Service Clearances 3 Indoor vts i ode T 4 Unit Arrangement DB HZ 5 Diffuser 6 Remote Panel 6 Electrical Wiring 7 Gas PIPING eus e xxr inira dex m ERU 8 9 Start Up BloWOfF sss RR ERA da ee aa aux 9 10 Direct Gas 11 14 10096 Outdoor Air 11 50 50 Recirculation 12 Operation Electrical without 7 Day Time
11. 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 e 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 Start Up Direct Gas IMPORTANT For proper unit function and safety follow the start up procedure in the exact order that it is presented IMPORTANT This start up should begin after all of the installation procedures and the blower start up have been completed 1 Check the Supply Gas Pressure Check the supply gas pressure and compare it with the unit s nameplate pressure requirements Adjust the supply regulator as needed until the supply gas pressure is within the specified range Minimum and maximum gas pressures for maximum output MAX BTU HR MIN BTU HR BTU H MAX BTU H MIN NORMAL MANIFOLD MIN GAS PRESSURE PRESSURE _ WO FOR MAX OUTPUT WO PRESSION DOADMISSION PRESSION DE GAZ MIN NORMALE POUR PUISSANCE MAX W C MIN GAS PRESSURE PRESSION DE GAZ PRESSURE PRESSION DE GAZ MAX MIN BURNER MAX BURNER PRESSURE DROP
12. nuts must be used on each end of each threaded hanging rod for proper support 4 DGX Industrial Space Heating 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 Installation of Arrangement DB RZ 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 SS flash to Roof Curb wooden nailer and reinstall cover 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 on a downblast DB arrangement to align the ductwork with the supply unit The duct adapter is only a guide and is not to be used as support for the ductwork 3 Apply Sealant Apply an appropriate sealant ar
13. units with a 42 inch or greater burner the flame safe guard will automatically shut off the pilot Regulators and Modulating Valves Remove cap to access Remove one wire to 10 seconds after the burner has been ignited maximum firing rate send the unit to the adjustment minimum firing rate Gas trains are equipped with either separate n regulators and modulating valves or with a combined 9 4 gt modulating regulator 7 AZ Adjusting the maximum and minimum fire requires the inlet air sensor to be set higher than the outdoor air temperature in order to start the burner Once high and low fire have been set the inlet air sensor should be set to the desired temperature Minimum firing rate adjustment Separate Regulator and Modulating Valves 8 Set Daytime Temperature Maximum firing Set the daytime temperature setting to the desired rate adjustment daytime space temperature the daytime temperature setting is located inside the TSCP Space Heat remote panel which should be mounted in the space Minimum firing rate adjustment Transformer Top 7 Day Timer Terminal optional tri aw op Strip Remove one wire to send the unit to the minimum firing rate Combined Modulating Regulator Night Temperature Day Setting Temperature optional Setting TSCP Space Heat Remote Panel Controls A DGX Industrial Space Heating EE Start Up Direct Gas continued NOTE For units without a 7 day time clock skip S
14. 1 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 energized Check for loose connection repair or replace relay Broken Fan Belt Replace reference V Belt Drives in the 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 A DGX Industrial Space Heating Troubleshooting Motor Overamps Air volume too high Actual static pressure lower than design Blower rotation correct Yes Motor voltage correct Yes Motor horsepower too low Shorted windings in motor Yes Everything is working properly consult factory EE DGX Industrial Space Heating Yes No No Adjust drives or increase external static pressure as needed Reference Blower Start Up Step 5 Adjust drives to reduce blower RPM Reverse blower rotation Reference Blower Start Up Step 2 Provide proper power supply Reference Blower Start Up Step 1 Resize motor Replace motor Troubleshooting Insufficient Airflow Damper s not fully opened System static losses too high Lea
15. BH e n Burner Differential gt Pressure Sensor Burner Manual Shut Off Valve High Gas Pressure Switch optional v L Pilot Solenoid Pilot Gas Pressure Test Port 1 Pilot Regulator N moo Modulating Valve Y IN rao Manual Pilot Low Gas Pressure Shut Off Valve Switch optional n Burner Gas Pressure Test Port Typical Gas Train Layout 800 MBH ALE HO KA Burner Differential gt Pressure Sensor Safety Shut Off Valves Regulator 0 Pilot Solenoid Pilot Gas Pressure Test Port Pilot Regulator Burner Manual Shut Off Valve High Gas Pressure Switch optional Y y Modulating Regulator Valve Y Low Gas Pressure lt Manual Pilot Switch od Shut Off Valve Burner Gas Pressure Test Port E k Shut Off Valves
16. F which closes once the fan relay RF is activated Power passes to and energizes starter relay ST1 N O contact on supply fan starter ST1 is energized and closed Supply fan M1 starts Power passes through N O contact on fan relay RF which is energized and closed Power passes to and energizes the heat relay RH Power passes through N O contact on heat relay RH which is energized and closed Power passes to and energizes terminal 5 on the Flame Safeguard FSG Power passes through N C contact on high temperature limit control HLC1 which remains closed if the temperature has remained below the HLC1 set point Power passes through optional N C and N O high and low gas pressure contacts PS4 and PS3 which are both closed if the gas pressure is within the set range Power passes to terminal 6 on the Flame Safeguard FSG Flame Safeguard FSG begins direct gas burner sequence See Flame Safeguard Sequence 3 Flame Safeguard FSG Sequence Verifies proper airflow with airflow switch PS2 Verifies no flame is present at burner Initiates 10 second prepurge Sends power to open pilot valve V1 and energizes the spark generator SG clicking of the spark generator may be heard Energizes spark generator for up to 10 seconds to light pilot and confirm flame Powers the main gas valve V2 open Shuts down spark generator SG Continuously monitors the flame and airflow Performs self diagnostic c
17. MAX lt BURNER PRESSURE DROP PERTE MAX DE PRESSION DANS LE BRULEUR MIN BURNER PRESSURE DROP PERTE MIN DE PRESSION DANS LE BRULEUR TYPE OF GAS NATURE DU GAZ EQUIPPED FOR AGAINST SCFM CONCU POUR CONTE DESIGN AT NORMALE EXTERNAL STATIC PRESSURE PRESSION STATIQUE EXTERIEURE Type of gas Maximum gas pressure Direct Gas Nameplate 2 Install Additional Regulator if Required When the supply gas pressure exceeds the maximum gas pressure shown on the direct gas nameplate an additional regulator by others is required to reduce the pressure The regulator must have a listed leak limiting device or it must be vented to the outdoors NOTE The regulator located inside the unit is used to adjust the unit s maximum output temperature 3 Connect the Supply Gas Line A manual shut off valve gas cock 1 8 in plugged test port and 6 in drip leg must be installed prior to the gas train The valve and the test port must be accessible for the connection of a test gauge Supply gas connections must be made by a qualified installer and are not furnished by manufacturer To a Controls Ground MN Gas Cock From Gas gt Supply 1 1 8 in Plugged Tap 6 in Trap
18. Part 470655 Model DGX Industrial Space Heating RN GREENHECK Building Value in Air Installation Operation and Maintenance Manual Please read and save these instructions for future reference 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 Model DGX 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 2 The rotation of the wheel is critical It must be free 2 Do not touch electrical switches to rotate without striking or rubbing any stationary 3 Extinguish any open flame puce 4 Immediately call your gas supplier 3 Motor must be securely and adequately grounded 4 Do not spin fan wheel faster than the maximum FOR YOUR SAFETY cataloged fan rpm Adjustments to fan speed The use and storage of gasoline or other significantly affects motor load If the fan
19. ard FSG Flame Safeguard FSG begins direct gas burner sequence See Flame Safeguard Sequence 3 Flame Safeguard FSG Sequence Verifies proper airflow with airflow switch PS2 Verifies no flame is present at burner Initiates 10 second prepurge Sends power to open pilot valve V1 and energizes the spark generator SG clicking of the spark generator may be heard Energizes spark generator for up to 10 seconds to light pilot and confirm flame Powers the main gas valve V2 open Shuts down spark generator SG Continuously monitors the flame and airflow Performs self diagnostic check every four seconds Troubleshooting Blower Does Not Operate Proper supply power at malndie connect Check Main Voltage See Blower Start Up Step 1 Main Disconnect DS1 Off Turn Main Disconnect DS1 On Primary Fuses Blown Replace Fuses 24 VAC between terminals R and X Main Transformer TR1 Defective Replace Transformer 24 VAC between terminals G and X Supply Switch S2 Off Turn Supply Switch S2 On Fire system contact FSC tripped not installed 24 VAC across Correct Replace terminals 3 and X Supply Fan Overload ST1 OL Tripped Reset and check motor amps reference Blower Start Up Step 4 Optional Exhaust Fan Interlocks ST2 ST5 Open 24 VAC across Correct Replace terminals 4 and X Optional Freeze Protection RT4 Tripped Reset 24 VAC across A2 and A1 on supply contactor ST
20. ct 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 TOOLS REQUIRED Voltage Meter with wire probes Amperage Meter Micro Amp Meter Tachometer Thermometer Incline manometer or equivalent 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 Unit s Total MCA Electrical Nameplate DGX Industrial Space Heating EJ 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 reference the example shown 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 inspectio
21. ct 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 the manufacturer 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 during shipment If the unit cannot be installed and operated immediately precautions need to be taken
22. e assures the desired temperature is delivered Spark Generator provides spark to ignite the burner Transformer provides voltage to Flame Safeguard Reference Start Up Checklist Unit Model Number e g DGX 120 GH100 1600 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 L Check tightness of all factory wiring connections L Verify control wiring wire gauge L Hand rotate blower to verify free rotation L Verify supply voltage to the main disconnect L Verify the supply gas pressure L Verify remote controls wiring Start Up Blower Checklist refer to Blower Start Up section for further detail L Check line voltage L1 L2 L2 L3 L1 L3 O Check blower rotation O Check for vibration L1 Supply fan RPM RPM L1 Motor nameplate amps Amps L1 Actual motor amps Amps L1 Actual CFM delivered CFM Optional Accessories refer to Blower Start Up section 6 for further detail O Building Freeze Protection Actual Setting Typical setting 5 minutes 45 F O Dirty Filter Gauge Actual Setting Typical setting varies Start Up Direct Gas refer to Direct Gas Start Up section for further detail O Check supply gas pressure Maximum Minimum Actual L Set optional High Gas Pressure Switch Actual Setting Typical 8 0 in wg L Set optional Low Gas Pressure Switc
23. ed DGX Industrial Space Heating EJ Installation of Indoor Unit 1 Install Hangers Install threaded hangers from ceiling supports When locating hangers allow enough room to open access panel s Be sure to allow for the recommended diffuser height outlined in the Diffuser installation section page 6 Two nuts must be used on the end of each threaded hanger Ceiling supports are supplied by others Refer to diagram below NOTE Refer to the Diffuser installation section page 6 for instructions on mounting the diffuser 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 50 50 units are shipped with the louvered intake assembled to the unit and do not require a thru wall weatherhood 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 manufacturer hanging bracket kit or c channel and angle iron supplied by others should be used Refer to the Indoor Mounting drawing In order to prevent the unit from swinging and to provide a safe environment for service and maintenance additional measures must be taken to secure the unit in all directions Diffuser Ceiling Supports Supports Indoor Mounting Two
24. el causing imbalance When this occurs the wheel and housing should be cleaned to assure proper operation Bearings The bearings for manufacturer 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 Bearing Bore Size inches 15 17 196 176 1 s 2 27 3 Suggested initial greasing interval is based on 12 hours per day operation and 150 F maximum housing temperature For continuous 24 hour operation decrease greasing interval by 5096 f 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 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 g
25. first close the field installed shutoff valve to isolate the unit from the gas supply line WARNING When leak testing pressures that are above 14 in wg 3 5 kPa close the field installed shutoff valve disconnect the furnace and gas train from the gas supply line and plug the supply line before testing IMPORTANT All piping should be clean and free of any foreign matter Foreign material entering the gas train can damage the valves regulators and burner IMPORTANT Do NOT connect the unit to gas types other than what is specified and do NOT connect the unit to gas pressures that are outside of the pressure range shown on the label When connecting the gas supply the length of the run must be considered in determining the pipe size to avoid excessive pressure drop Refer to a Gas Engineer s Handbook for gas pipe capacities 8 DGX Industrial Space Heating 1 Determine the Supply Gas Requirements The unit s direct gas nameplate states the requirements for the gas being supplied to the unit The direct gas nameplate is located on the outside of the unit on the control center side Mi imuni qas pressure for maximum output MAX BTU HR MIN BTU HR BTU H MAX BTU H MIN NORMAL MANIFOLD MIN GAS PRESSURE PRESSURE WC FOR MAX OUTPUT WC PRESSION DE GAZ MIN PRESSION DOADMISSION NORMALE POUR PUISSANCE MAX MIN GAS MAX GAS PRESSURE Wo PRESSURE Wo PRESSION DE GAZ PRESSION DE GAZ
26. h Actual Setting Typical 3 0 in wg Set Burner Pressure Differential Actual Setting Typical 0 65 in wg L Set the maximum firing rate temp rise L Set the minimum firing rate check L Set the unit s operating temperature F DGX Industrial Space Heating E 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 EJ DGX Industrial Space Heating 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 R DGX Industrial Space Heating EH 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 o
27. he unit specifications the unit will not operate efficiently may have sporadic shutdowns and may produce excessive carbon monoxide CO or other gases 4a Set the Burner Air Pressure Differential With the fan running and discharging 70 F 21 C air connect a U Tube manometer to the outer sensing probes see below and measure the static pressure across the burner Outer Sensing Probes N 0 625 0 675 in WC 1 Measuring the Pressure Drop Adjustable Top Baffle The proper static pressure should be between 0 625 and 0 675 inches wc If needed evenly adjust the O id baffles above and below the O burner keeping the burner centered in the opening A until the reguired pressure is obtained Airflow Adjustable Bottom Baffle Burner and Baffles NOTE When required pressure is obtained be sure to reconnect the outer sensing probes IMPORTANT This process may need to be repeated until the proper pressure is achieved This adjustment will change the air quantity delivered by the unit and therefore the air quantity delivered should be rechecked Refer to the Blower Start Up section NOTE To increase the static pressure decrease the opening To decrease the static pressure increase the opening DGX Industrial Space Heating EE Start Up Direct Gas e 50 50 Recirculation IMPORTANT Proper air velocity over the burner
28. heck every four seconds DGX Industrial Space Heating Operation Electrical Sequence With 7 Day Timer 1 Switch S2 in Summer Mode Power passes through N C field supplied fire contact FSC Power passes through terminal G 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 is closed if the temperature has remained above the set point Power passes to and energizes optional inlet damper D1 which opens Power passes to and energizes fan relay RF Power passes to N O contact on fan relay RF which closes once the fan relay RF is activated 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 2 Switch S2 in Winter Mode If space temperature is less than the daytime temperature setting the N O contact on the temperature sensor TS1 closes and power passes to the timer TC1 If the timer TC1 is on power passes through N C field supplied fire contact FSO If the timer TC1 is off but the space temperature is less than the nighttime temperature setting the N O contact on the temperature sensor TS2 closes and power passes through N C field supplied fire contact FSC Power passes through terminal W1 and then energizes the space heat relay RS
29. ks in ductwork Belt slipping Yes Everything is working properly consult factory Too Much Airflow Blower speed too high Filters not in place Insufficient external static pressure Everything is working properly consult factory Yes Yes Yes Yes Yes Yes Yes Yes Yes Adjust damper linkage s or replace faulty actuator s Damper actuators may take a few minutes to open Reduce losses by improving ductwork Adjust drives as needed Clean or replace filters Reference Filters in the Maintenance section Repair leaks Replace or tighten belt Reference V Belt Drives in the Maintenance section Adjust drives as needed Reference Blower Start Up Step 5 Increase external static pressure DGX Industrial Space Heating EE Troubleshooting Excessive Noise or Vibration Belts worn or loose Replace worn belts or tighten loose belts Reference V Belt Drives in the Maintenance section Sheaves aligned Align sheaves Reference V Belt Drives in the Maintenance section Yes Wheel s unbalanced Clean and or balance wheel s Bearings worn or need lubrication Replace worn bearings or lubricate bearings as needed Reference Bearings in the Maintenance section Yes Wheel s rubbing on inlet Adjust wheel s or inlet No At this time noise and vibration should be at acceptable levels EJ DGX Industrial S
30. lutter slippage and overheated sheaves 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 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 EZ DGX Industrial Space Heating Snow Accumulation Clear snow away from roof mounted units Keep the snow clear of the intake and access doors Motors Motor maintenance is generally limited to cleaning and lubrication where applicable Cleaning should be limited to exterior surfaces only Removing dust and grease build up on the motor assures proper motor cooling Motors supplied with grease fittings should be greased in accordance with the manufacturer s recommendations IMPORTANT Do not allow water or solvents to enter the motor or bearings Motors and bearings should never be sprayed with steam water or solvents IMPORTANT Greasing motors is only intended when fittings are provided Many motors are permanently lubricated requiring no additional lubrication Wheels Wheels require little attention when moving clean air Occasionally oil and dust may accumulate on the whe
31. ly 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 is closed if the temperature has remained above the set point Power passes to and energizes optional inlet damper D1 which opens Power passes to and energizes fan relay RF Power passes to N O contact on fan relay RF which closes once the fan relay RF is activated 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 2 Switch S2 in Winter Mode If space temperature is less than the daytime temperature setting the N O contact on the temperature sensor TS closes Power passes through N C field supplied fire contact FSC Power passes through terminal W1 and then energizes the space heat relay RS Power passes through N O contact on the space heat relay RS which is energized and closed Power passes through terminal G 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 is closed if the temperature has remained above the set point Power passes to and energizes optional inlet damper D1 which opens Power passes to and energizes fan relay RF Power passes to N O contact on fan relay R
32. n both the upstream and downstream sides of the mixing plates Any scaling or foreign material should be removed with a wire brush Refer to image below Visually check that all holes in the mixing plates are clear If any burner ports are plugged even partially clear them with a piece of wire or another appropriate tool Replace or tighten any loose or missing fasteners on the mixing plates Always use zinc plated or stainless steel fasteners Flame Rod Spark Rod Mixing Plate Holes Burner Ports Burner Inspect and clean the flame and spark rod Occasional replacement of the flame rod and spark rod may be necessary to ensure optimum unit performance If a UV sensor is used instead of a flame rod the sensor s lens should be cleaned at least once a year The sensor may require more frequent cleaning depending on the operating environment and should be checked periodically over the heating season WARNING Do not enlarge burner ports when clearing a blockage performance could be affected NOTE Flame rods can last many years but because of thermal expansion of the porcelain flame rods can fail over time EI DGX Industrial Space Heating Gas Train The gas connections joints and valves should be checked annually for tightness Apply a soap and water solution to all piping watch for bubbling which indicates a leak Other leak testing methods can be used Reference Typical Gas Train Layout 400 800 M
33. n 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 amps and RPMs DGX Industrial Space Heating 5 Air Volume Measurement and 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
34. nduit metal clad cable or raceways 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 Manufacturer is not responsible for any damage to or failure of the unit caused by incorrect final wiring IMPORTANT Manufacturer s standard control voltage is 24 VAC Control wire resistance should not exceed 0 75 ohms 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 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 sup
35. ound the perimeter of the curb and duct adapter s to isolate fan vibration and prevent water penetration Supply Air Ductwork Arrangement DB only Sealant Ductwork 4 Install Unit Use a crane and a 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 Setting Unit The use of all lifting lugs and a set of spreader bars is mandatory when lifting the unit 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 6 Seal Weatherhood Seam Using an appropriate sealant seal the seam between the weatherhood and the unit Complete Rooftop Installation DGX Industrial Space Heating EJ Installation of Diffuser and Remote Panel TSCP The location of the discharge diffuser and the TSCP Space Heat Remote Panel are critical for optimum performance of the Greenheat System 1 Install Diffuser Using self tapping screws attach diffuser to the ductwork or unit Be sure to maintain the recommended floor to diffuser height Refer to the chart for the recommended diffuser height Diffuser Height feet 8 13000 20000 Indoor Mounted Unit Thru Wall Diffuser Height Rooftop 4 eq Unit
36. pace Heating Troubleshooting Heater Does Not Operate Does not attempt to light No visible spark 24 VAC between No terminals W1 and X Heat Switch S4 Off Yes Turn Heat Switch S4 On Heat Switch Not Wired ire Heat Switch S4 115 VAC between iis Wire Heat Switch S4 terminals 102 and 101 Primary Fuses Blown Yes Replace Fuses Main Transformer TR4 Defective Transf 115 VAC between No Replace Transformer terminals 103 and 101 Optional Inlet Air Sensor TS4 Holding Yes Adjust TS4 setting Reference Blower Start Up Step 6 Heat Relay RH Defective Replace Heat Relay RH The power light on the flame safeguard should blink approximately every 5 seconds as it performs a self diagnostics check 115 VAC between No terminals 104 and 101 High Limit Tripped Reset Replace High Limit HLC1 Check on cause of control loss Yes 115 VAC between No terminals 106 and 101 Optional High Low Gas Pressure Switch es Yes PS3 and PS4 Tripped Correct gas pressure and reset Reference Direct Gas Start Up Steps 2 and 3 Continuity between No terminals 107 and 108 Airflow Switch PS2 Holding for Proper Airflow Correct airflow across burner Reference Direct Gas Start Up Step 4a or 4b Yes At this time the heater should attempt to light The pilot light on the flame safeguard should illuminate A DGX Industrial Space Hea
37. plied 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 115V power supply circuit The circuit must include short circuit protection which may need to be supplied by others 5 Wire Accessories Reference the Ladder Diagram on the inside of the control center door for correct wiring of the following accessories e Summer Off Winter Switch e Indicating Lights e Dirty Filter Indicator e Industrial Space Heat TSCP NOTE TSCP has number to number wiring DGX Industrial Space Heating Installation of Gas Piping IMPORTANT All gas piping must be installed in accordance with the latest edition of the National Fuel Gas Code ANSI Z223 1 and any local codes that may apply In Canada the equipment shall be installed in accordance with the Installation Code for Gas Burning Appliances and Equipment CGA B149 and Provincial Regulations for the class Authorities having jurisdiction should be consulted before installations are made WARNING All components of this or any other gas fired heating unit must be leak tested prior to placing the unit into operation A soap and water solution should be used to perform this test NEVER test for gas leaks with an open flame WARNING When leak testing pressures that are equal to 14 in wg 8 5 kPa
38. r 15 Electrical with 7 Day Timer 16 Troubleshooting BIOWOE raas M 17 iuda atus PP SEXE GERE ped Pac d SNG 18 Insufficient Airflow Too Much Airflow 19 Excessive Noise or Vibration 20 Heater 21 23 Maintenance Routine na 24 25 26 Reference Gas Train Layout 400 800 MBH 27 Gas Train Layout gt 800 MBH 27 Control Center Layout Dirty Filter Switch 28 Start Up Check List 29 Maintenance Log 30 31 Warranty oss sess cere mm Backcover A Clearance to Combustibles Service Clearances Floor Top Sides Ends Insulated Oinches Oinches Oinches 0 inches Units 0 mm 0 mm 0 mm 0 mm Non Insulated 0 inches 6inches 6 inches 6 inches Units 0mm 152 4 mm 152 4 mm 152 4 mm Clearance to combustibles is defined as the minimum distance 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 A A 48 inches 1219 2 mm alle ear on the controls side of the unit Clearances for component removal may be greater than the service clearances list
39. r lighting the main burner and the flame safeguard monitors the main flame instead of the pilot flame If the minimum fire is set too low the flame safeguard may not be able to sense it Adjust the minimum firing rate Reference Direct Gas Start Up Step 7 If the signal slowly drops off typically the airflow is too low Adjust drives as needed If it suddenly drops to zero the flame rod is grounding out Adjust the flame rod to avoid contact with the burner or the unit If the flame signal is above 1 25 VDC and constant the main gas valves will remain open until the call for heat is interrupted or the unit is shut down DGX Industrial Space Heating EI Maintenance Routine CAUTION Lock out the gas and the electrical power to the unit before performing any maintenance or service operations to this unit V Belt Drives V belt drives must be checked on a regular basis for wear tension alignment and dirt accumulation Check the tension by measuring the deflection in the belt as shown below Check the alignment by using a straight edge across both sheaves as shown below IMPORTANT Premature or frequent belt failures can be caused by improper belt tension or misaligned sheaves e Abnormally high belt tension or drive misalignment will cause excessive bearing loads and may result in failure of the fan and or motor bearings e Abnormally low belt tension will cause squealing on start up excessive belt f
40. r parts which prove to be defective during the warranty period will be replaced at our option when returned 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 s Industrial Space Heating catalog provides AMCA Publication 410 96 Safety Practices for Users and additional information describing the equipment fan Installers of Industrial and Commercial Fans provides performance available accessories and specification data additional safety information This publication can be obtained from AMCA International Inc at www amca org E GREENHECK Building Value in Air Phone 715 359 6171 Fax 715 355 2399 e E mail gfcinfo greenheck com Website www greenheck com 470655 DGX Industrial Space Heating Rev 3 August 2012 Copyright 2012 Greenheck Fan Corporation
41. rect Gas Start Up Step 2 Adjust the pilot pressure Reference Direct Gas Start Up Step 2 With proper airflow gas pressure and spark the unit should light If problems remain consult the factory Troubleshooting Heater Does Not Operate Visible pilot Measure the flame signal when there is a visible pilot Flame signal greater than 1 25 VDC Check for proper airflow Direct Gas Start Up Step 4 Pressure drop across the burner between 0 625 and 0 675 in wg Check the minimum firing rate Direct Gas Start Up Step 7 Is the minimum firing rate set correctly Does the flame signal remain constant Yes Note The flame signal should be steady and above 1 25 VDC with a visible pilot Reference Direct Gas Start Up Step 11 Unit is not grounded Properly ground unit Flame rod is grounding out Adjust the flame rod to avoid contact with the burner or the unit Cracked porcelain on flame rod Replace flame rod Note When the pressure is low or marginal and the unit begins heating the air density will change This can cause the pressure to drop below the minimum setting Also low airflow can cause the flame to walk out of the burner and away from the flame sensor causing the unit to recycle Adjust burner baffles Reference Direct Gas Start Up Step 4a or 4b Note Burners greater than 36 inches in length use an interrupted pilot The pilot is turned off 10 seconds afte
42. rise is achieved After setting the maximum firing rate reconnect the wire to the amplifier Remove the wire from the 3 terminal Low fire to send the unit to maximum fire setting LFST dipswitch MAXITROL Selectra romn A1014R Set the discharge temperature Typical 140 F Minimum Maximum Typical 90 F Typical 140 F Maxitrol Series 14 Do not set the burner maximum firing rate based on gas pressure It should be set based on the unit s designed temperature rise shown on the direct gas label Bottom Baffle Burner and Baffles a new pulley will have to be acquired NOTE When required pressure is obtained be sure to reconnect the outer sensing probes NOTE To increase the static pressure increase the fan rpm To decrease the static pressure decrease the fan rpm DGX Industrial Space Heating MAX BTU HR BTU H MAX MIN BTU HR BTU H MIN NORMAL MANIFOLD PRESSURE PRESSION D ADMISSION NORMALE W C MIN GAS PRESSURE FOR MAX OUTPUT PRESSION DE GAZ MIN POUR PUISSANCE MAX GAS PRESSURE PRESSION DE GAZ W C MAX GAS PRESSURE PRESSION DE GAZ MAX MIN BURNER PRESSURE DROP PERTE MIN DE PRESSION DANS LE BRULEUR W C MAX BURNER PRESSURE DROP PERTE MAX DE PRESSION DANS LE BRULEUR TYPE OF GAS NATURE DU GAZ EQUIPPED FOR CONCU POUR AGAINST SCFM CONTE
43. teps 9 and 10 9 Set Nighttime Temperature Set the nighttime temperature setting to the desired nighttime space temperature the nighttime temperature setting is located inside the TSCP Space Heat remote panel which should be mounted in the space The TSCP Space Heat remote panel controls image is found on page 13 For the unit to function properly the daytime temperature setting should always be set higher than the nighttime temperature 10 Program the 7 Day Time Clock Follow the detailed Programming and Operating Instructions for 7 Day Time Clock that shipped with the unit Set the timer ON times to the times when the daytime temperature setting is to be used Set the timer OFF times to the times when the nighttime temperature setting is to be used 11 Flame Signal Check To measure the flame signal connect a standard DC voltmeter to the flame amplifier test jacks and com as shown The flame signal should be above 1 25 VDC and steady Check the flame signal with the burner at pilot only minimum fire mid fire and high fire Flame Signal Check NOTE If the flame signal is not above 1 25 VDC and steady consult the Troubleshooting section 1 DGX Industrial Space Heating Operation Electrical Sequence e Without 7 Day Timer 1 Switch S2 in Summer Mode Power passes through N C field supplied fire contact FSC Power passes through terminal G Power passes through N C contact on supp
44. ting BI Troubleshooting Heater Does Not Operate Attempts to light but no pilot visible spark Check inlet gas pressure Direct Gas Start Up Step 1 Yes Gas pressure between the minimum and maximum shown No on the direct gas label Air in the gas line Yes No Check for proper airflow Direct Gas Start Up Step 4 Yes Pressure drop across the burner No between 0 625 and 0 675 in wg Yes Proper spark No Yes Check for proper pilot pressure Direct Gas Start Up Step 2 Pilot pressure correct Yes EI DGX Industrial Space Heating Note The minimum and maximum gas pressures for your unit are shown on the direct gas label Reference Direct Gas Start Up Step 1 Correct gas pressure Reference Direct Gas Start Up Step 1 Purge gas line Verify gas at the pilot Note The airflow may satisfy the airflow switch but may make lighting the pilot difficult Adjust the pressure drop across the burner between 0 625 and 0 675 in wg shown in Direct Gas Start Up Step 4a or 4b Adjust burner baffles Reference Direct Gas Start Up Step 4 Crossed flame and spark wires Uncross wires and reconnect Incorrect spark plug gap Set spark plug gap to 0 062 in Defective spark plug Replace spark plug Note A high pilot pressure will make lighting more difficult Lower the pilot pressure in increments until the unit lights Then set the pilot per the instruction in Di
45. 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 in a low humidity atmosphere which is sealed to prevent the entry of blowing dust rain or snow Temperatures should be evenly maintained between 30 F 1 C and 110 F 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 2 DGX Industrial Space Heating The unit should be stored at least 37 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 designed for outdoor applications may be stored outdoors if absolutely necessary Roads or aisles
46. un 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 Shell Alavania 2 Mobilux 2 Texaco Premium 2 Exxon Unirex 2 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 filters should be from the same manufacturer and the same size as the original filters provided with the unit DGX Industrial Space Heating E3 Maintenance Fall Start Up Repeat the Blower Start Up Step 5 and Direct Gas Start Up Step 1 2 and 4a or 4b This will ensure that the gas and air are set properly before the heating season begins and should lead to trouble free operation all winter High Limit The high limit switch may have tripped over the summer it should be checked and reset if necessary Burner Inspect the burner for accumulation of scales o
Download Pdf Manuals
Related Search