Stulz SCS-024 - Page 4

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INI-SPACE EC INSTALLATION, OPERATION AND MAINTENANCE MANUAL
2.11.1 Pressure/Temperature Settings ...........................21
2.11.2 Saturated Refrigerant Pressure ............................21
3.0 Start-Up/Commissioning ............................. 22
3.1 Operation ......................................................................22
3.2 Step-by-Step Start-Up Instructions ....................22
3.3 Unit Shutdown .............................................................22
3.4 Microprocessor Controller Programming .........22
4.0 Maintenance .................................................. 23
4.1 Periodic General Maintenance ..............................23
4.1.1 Filter ................................................................................23
4.1.2 Drain Pan .......................................................................23
4.1.3 Coils ................................................................................23
4.1.4 Heat/Reheat ................................................................23
4.1.5 Humidifi er ......................................................................23
4.1.6 Condensate Pump .....................................................24
4.1.7 Condenser ....................................................................24
4.1.8 Pump Package ............................................................24
4.2 Troubleshooting ..........................................................24
4.3 Field Service .................................................................28
4.3.1 Leak Detection ............................................................28
4.3.2 Leak Repair ..................................................................28
4.3.3 Refrigerant Piping ......................................................28
4.3.4 General Common Repairs/Component Re-
placement .....................................................................28
4.3.4.1 Compressor Failure ..................................................28
4.3.4.2 Standard Clean out Procedure ..............................29
4.3.4.3 Burn-Out/Acid Cleanup Procedure .....................29
4.3.4.4 Humidifi er Cylinder Replacement .........................29
4.3.4.5 Filter Replacement ....................................................30
5.0 Product Support ............................................ 30
5.1 Technical Support ......................................................30
5.2 Obtaining Warranty Parts ........................................30
5.3 Obtaining Spare/Replacement Parts..................31
Figures
Figure 1. Typical Upfl ow Internal Layout (Model
CCU041AEC shown for reference) ..............3
Figure 2. Installation Clearance ..............................................5
Figure 3. Typical Installation .....................................................6
Figure 4. Optional Floor Stand Installation .........................7
Figure 5. Downfl ow Confi guration Typical Air
Patterns .....................................................................10
Figure 6. Upfl ow Confi guration Typical Air Patterns.....11
Figure 7. Condensate Pump .................................................13
Figure 8. Sample Nameplate ................................................13
Figure 9. Interconnecting Field Wiring - Glycol
Systems ..................................................................... 16
Figure 10. Interconnecting Field Wiring - Remote
Condenser ................................................................ 16
Tables
Table 1. Equivalent Line Size Chart .....................................9
Table 2. Recommended Liquid Line Sizes ........................9
Table 3. Recommended Discharge Line Sizes .............12
Table 4. Estimated Refrigerant Charge Weight
for STULZ SCS Condensers ..............................17
Table 5. Weight of R410A Refrigerant
(lbs/100 ft of type L tubing) ...............................17
Table 6. R410A Pressure/Temperature Settings .......21
Table 7. R410A Refrigerant Pressure .............................21
Table 8. Troubleshooting Guide .........................................25