1103UDSA-2--EN, Pag. 2/36
INDEX
Warnings ..........................................................................................................................3
1. General .......................................................................................................................4
2. Installation codes .......................................................................................................4
3. Warranty .....................................................................................................................4
4. Uncrating and preparation ..........................................................................................4
5. Dimensions ................................................................................................................5
6. Technical data ............................................................................................................7
7. Flueing requirements .................................................................................................8
8. Unit heater location ....................................................................................................12
9. Hanging the unit .........................................................................................................13
10. Gas piping and pressures ...........................................................................................15
11. Electrical supply and connections ..............................................................................16
12. Check installation and start up ...................................................................................18
13. Maintenance schedule ................................................................................................23
14. Heat exchanger maintenance .....................................................................................24
15. Burner maintenance ...................................................................................................25
16. Burner orifi ce .............................................................................................................27
17. Ignition system ...........................................................................................................27
18. Fan motor ...................................................................................................................28
19. Fan motor, fan blades and guard ................................................................................28
20. Venter motor and wheel .............................................................................................29
21. Gas valve ....................................................................................................................31
22. Combustion air pressure switch .................................................................................32
23. Limit controls .............................................................................................................32
24. Flue and combustion air system .................................................................................33
25. Troubleshooting .........................................................................................................33
26. Parts list ......................................................................................................................36
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