Greenheck Part #470655 - Manuals

Page 2 - OUTDOOR; — Units designed for outdoor applications; REMOVING FROM STORAGE; — As units are removed; Receiving; — The ideal environment for the storage of

2 DGX Industrial Space Heating The unit should be stored at least 3½ 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...

Page 3 - Table of Contents; Installation; Clearance to Combustibles /; Floor; Clearance to combustibles is defined as the minimum distance

3 DGX Industrial Space Heating Table of Contents Installation Clearance to Combustibles/Service Clearances . . 3Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Unit Arrangement DB / HZ . . . . . . . . . . . . . . . . . . . 5Diffuser . . . . . . . . . . . . . . . . . . . . ...

Page 4 - Installation of Indoor Unit; Indoor Mounting; Seal Wall Opening; NOTE

4 DGX Industrial Space Heating Installation of Indoor Unit 3. Seal Wall Opening Apply sealant around the perimeter of the weatherhood to prevent water penetration and drafts into the building. 1. Install Hangers Install threaded hangers from ceiling supports. When locating hangers, allow enough room...

Page 5 - Installation of Arrangement DB / HZ; Roof Curb; Ductwork; Assemble and Attach Weatherhood

5 DGX Industrial Space Heating Installation of Arrangement DB / HZ 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 i...

Page 6 - Installation of Diffuser and Remote; Thru-Wall Diffuser Height; Rooftop Diffuser Height; TSCP Location; IMPORTANT; Airflow

6 DGX Industrial Space Heating Installation of Diffuser and Remote Panel (TSCP) NOTE The location of the discharge diffuser and the TSCP Space Heat Remote Panel are critical for optimum performance of the Greenheat™ System. 2. Install TSCP When installing the TSCP Space Heat Remote Panel, the locati...

Page 7 - Installation of Electrical Wiring; Connect the Main Power; Electrical Nameplate

7 DGX Industrial Space Heating 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 i...

Page 8 - Installation of Gas Piping; Determine the Supply Gas Requirements; Connect the Supply Gas Line; Supply Gas Line

8 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 Cod...

Page 9 - Optional Vent Line; NEVER test for a gas leak with an open flame.; Refer to the Start-Up Checklist in the Reference; WARNING; SPECIAL TOOLS REQUIRED

9 DGX Industrial Space Heating Optional Vent Line 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. 4. Pipe the Optional Vent Line If an optional vent line is located between the safety ...

Page 10 - Check the Blower Rotation; • Building Freeze Protection; Blower Rotation; Check for Vibration

10 DGX Industrial Space Heating 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. NOTE To reverse the rotation on three phase units...

Page 11 - Check the Supply Gas Pressure; Burner and Baffles; Measuring the Pressure Drop; When required pressure is obtained, be sure to; Direct Gas Nameplate

11 DGX Industrial Space Heating 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. Chec...

Page 12 - Set the Low Fire Time Delay; Maxitrol Series 14

12 DGX Industrial Space Heating 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 se...

Page 13 - continued; Separate Regulator and Modulating Valves; Regulators and Modulating Valves; Transformer; TSCP Space Heat Remote Panel Controls

13 DGX Industrial Space Heating Start-Up Direct Gas continued IMPORTANT Setting the maximum firing rate during mild weather conditions may cause the high limit to trip out during extreme conditions requiring manual resetting. NOTE The minimum setting for the maximum firing rate may be higher than re...

Page 14 - Program the 7 Day Time Clock; ON; Flame Signal Check

14 DGX Industrial Space Heating 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 wh...

Page 15 - light pilot and confirm flame; Operation - Electrical Sequence; which closes once the fan relay (RF) is activated

15 DGX Industrial Space Heating • 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...

Page 17 - Proper supply power at; Blower Does Not Operate; 4 VAC across A2 and A1 on; Troubleshooting

17 DGX Industrial Space Heating Proper supply power at main disconnect 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 Transforme...

Page 18 - Motor Overamps; Adjust drives or increase external

18 DGX Industrial Space Heating Motor Overamps Troubleshooting Air volume too high? Adjust drives or increase external static pressure as needed. (Reference Blower Start-Up – Step #5) Motor horsepower too low? Resize motor. Motor voltage correct? Provide proper power supply. (Reference Blower Start-...

Page 19 - Insufficient Airflow; (Damper actuators may take a few minutes to open); Too Much Airflow

19 DGX Industrial Space Heating Insufficient Airflow Troubleshooting Damper(s) not fully opened? Adjust damper linkage(s), or replace faulty actuator(s). (Damper actuators may take a few minutes to open) Filters dirty or clogged? Clean or replace filters. (Reference Filters in the Maintenance sectio...

Page 20 - Excessive Noise or Vibration; Replace worn belts or tighten loose belts.; Bearings worn or need; At this time noise and vibration should

20 DGX Industrial Space Heating Excessive Noise or Vibration Troubleshooting Sheaves aligned? Align sheaves. (Reference V-Belt Drives in the Maintenance section) Wheel(s) unbalanced? Clean and/or balance wheel(s). Belts worn or loose? Replace worn belts or tighten loose belts. (Reference V-Belt Driv...

Page 21 - Heater Does Not Operate; Does not attempt to light (No visible spark); 4 VAC between

21 DGX Industrial Space Heating Heater Does Not Operate Does not attempt to light (No visible spark) Troubleshooting 24 VAC between terminals W1 and X? Heat Switch (S4) Off (Turn Heat Switch (S4) On) Heat Switch Not Wired (Wire Heat Switch (S4)) 115 VAC between terminals 102 and 101? Primary Fuses B...

Page 22 - If problems remain, consult the factory

22 DGX Industrial Space Heating Heater Does Not Operate Attempts to light, but no pilot (visible spark) Troubleshooting Gas pressure between the minimum and maximum shown on the direct gas label? Check inlet gas pressure. (Direct Gas Start-Up Step #1) Air in the gas line? Purge gas line (Verify gas ...

Page 23 - Visible pilot; (Adjust the flame rod to avoid contact with the burner or the unit)

23 DGX Industrial Space Heating Heater Does Not Operate Visible pilot Troubleshooting Flame signal greater than 1.25 VDC Measure the flame signal when there is a visible pilot Pressure drop across the burner between 0.625 and 0.675 in. wg? Check for proper airflow (Direct Gas Start-Up Step #4) Does ...

Page 24 - Maintenance - Routine; Belt Tension; Drive Alignment; Snow Accumulation

24 DGX Industrial Space Heating 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...

Page 25 - Bearings; Lubricate bearings prior to periods of extended; Filters

25 DGX Industrial Space Heating 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...

Page 26 - High Limit; Burner; Gas Train

26 DGX Industrial Space Heating Maintenance - Fall 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. Start-Up Repeat the Blower Start-Up S...

Page 27 - Reference; Typical Gas Train Layout > 800 MBH

27 DGX Industrial Space Heating Reference Typical Gas Train Layout 400 – 800 MBH Typical Gas Train Layout > 800 MBH Burner Differential Pressure Sensor High Gas Pressure Switch (optional) Low Gas Pressure Switch (optional) Manual Pilot Shut-Off Valve Pilot Gas Pressure Test Port Pilot Solenoid Bu...

Page 28 - Typical Control Center Layout

28 DGX Industrial Space Heating Typical Control Center Layout Dirty Filter Switch Reference 7 15 14 12 13 4 1 6 2 3 5 8 9 10 11 1. Supply Motor Starter — 24 volt magnetic contacts for starting supply motor. 2. Supply Overload — provides electronic overload protection to supply motor. 3. Low Voltage ...

Page 29 - Pre Start-Up Checklist; check boxes as items; Start-Up Blower Checklist; refer to Blower; Optional Accessories; refer to Blower Start-Up

29 DGX Industrial Space Heating 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-...

Page 30 - Maintenance Log

30 DGX Industrial Space Heating Maintenance Log Date ___________________Time _____________ AM/PMNotes: _____________________________________________________________________________________________________________________________________________________________________________________________________...

Page 32 - Warranty

32 470655 • DGX Industrial Space Heating, Rev. 3, August 2012 Copyright 2012 © Greenheck Fan Corporation 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 to be defective during the wa...