Carrier 48EH, Инструкции по установке, эксплуатации и обслуживанию

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Packaged rooftop units
with integrated gas burner
2
Contents
1. Introduction .......................................................................................................................................................................................................3
2. Operation limits .................................................................................................................................................................................................3
3. Technical characteristics ...................................................................................................................................................................................4
4. General recommendations ................................................................................................................................................................................5
Delivery of the unit ............................................................................................................................................................................................5
Unit identifi cation ...............................................................................................................................................................................................5
Documentation provided ...................................................................................................................................................................................5
Location .............................................................................................................................................................................................................5
Installation .........................................................................................................................................................................................................5
Unit maintenance ..............................................................................................................................................................................................5
Safety advice .....................................................................................................................................................................................................5
Refrigerant safety ..............................................................................................................................................................................................6
Burner safety .....................................................................................................................................................................................................6
5. Transport ...........................................................................................................................................................................................................6
Gravity centre ....................................................................................................................................................................................................7
6. Location and assembling ..................................................................................................................................................................................7
Location designation .........................................................................................................................................................................................7
Sound Level ......................................................................................................................................................................................................7
Anchorage for antivibrators ...............................................................................................................................................................................8
Minimum free space for commissioning and maintenance operations .............................................................................................................8
7. Gas Burner ........................................................................................................................................................................................................9
Operating principle ............................................................................................................................................................................................9
Control of the gas burner ................................................................................................................................................................................10
8. Safety elements ..............................................................................................................................................................................................11
Safety devices in the gas burner .....................................................................................................................................................................11
Safety devices in the 48EN/EH unit ................................................................................................................................................................12
9. Checking before commissioning .....................................................................................................................................................................13
Electrical Connections .....................................................................................................................................................................................13
Gas Burner ......................................................................................................................................................................................................13
Air ducts connections ......................................................................................................................................................................................15
Checks in the axial fans ...................................................................................................................................................................................15
Checks in the centrifugal fans .........................................................................................................................................................................15
Condensate drain connection .........................................................................................................................................................................16
10. Starting the unit ...............................................................................................................................................................................................17
Checks prior to commissioning .......................................................................................................................................................................17
Operational checks .........................................................................................................................................................................................17
Possible problems at commissioning ..............................................................................................................................................................17
11. Options ............................................................................................................................................................................................................18
Pre-assembly frames (optional) ......................................................................................................................................................................18
Outdoor coil protection grille ...........................................................................................................................................................................18
Filters ..............................................................................................................................................................................................................18
Stop-drop ........................................................................................................................................................................................................18
12. Maintenance ....................................................................................................................................................................................................19
13. Control and analysis of breakdowns................................................................................................................................................................22