- ETL user guide Modular Direct Fired Heaters

TABLE OF CONTENTS
WARRANTY.................................................................................................................................................. 3
INSTALLATION.............................................................................................................................................4
Mechanical................................................................................................................................................4
Site Preparation.................................................................................................................................... 4
Assembly .............................................................................................................................................. 4
Curb and Ductwork............................................................................................................................... 4
Roof Mount Installation......................................................................................................................... 5
Installation with Exhaust Fan................................................................................................................ 5
Direct Fired Module Installation............................................................................................................6
Indoor (INLINE) Installation .................................................................................................................. 6
Heat Module Add-On Installation .........................................................................................................6
Gas ...........................................................................................................................................................7
Electrical ...................................................................................................................................................8
Motorized Intake Damper .....................................................................................................................8
Remote Control Panel .......................................................................................................................... 9
Fan to Building Wiring Connection .......................................................................................................9
OPERATION ...............................................................................................................................................10
Start Up...................................................................................................................................................10
Special Tools Required ......................................................................................................................10
Start Up Procedure.............................................................................................................................10
Pilot Adjustment..................................................................................................................................10
Main Burner Adjustment.....................................................................................................................11
Heater Start Up Summary .................................................................................................................. 12
Final Start Up Procedure.................................................................................................................... 13
Pulley Adjustment...............................................................................................................................13
Pulley Alignment.................................................................................................................................13
Proper Belt Tension............................................................................................................................13
Pulley Combination Chart...................................................................................................................14
Sequence of Operation...........................................................................................................................15
Flame Safety Control..........................................................................................................................15
Air Flow Switch ................................................................................................................................... 15
Modulating Gas System .....................................................................................................................16
High Temperature Limit...................................................................................................................... 16
Operation Summary ........................................................................................................................... 16
Optional Remote Panel Circuit ...........................................................................................................17
Components............................................................................................................................................18
Remote Panel Option .........................................................................................................................19
Troubleshooting ...................................................................................................................................... 20
Airflow Troubleshooting Chart ............................................................................................................ 20
Burner Troubleshooting Chart ............................................................................................................21
Remote Panel Troubleshooting Chart................................................................................................22
Troubleshooting Flowcharts ...............................................................................................................23
MAINTENANCE .......................................................................................................................................... 26
General Maintenance .............................................................................................................................26
2 weeks after startup ..............................................................................................................................27
Every 3 months.......................................................................................................................................27
Filter Quantity Chart ...........................................................................................................................27
Yearly......................................................................................................................................................27
Start-Up and Maintenance Documentation ............................................................................................28
Job Information...................................................................................................................................28
Heater Information..............................................................................................................................28
Maintenance Record ..........................................................................................................................28
Factory Service Department...............................................................................................................28