SCS Installation, Operation & Maintenance Manual

1 SCS installation , Operation & Maintenance Manual ( Sept, 2007). Air Technology Systems, Inc. SCS installation , Operation & Maintenance Manual MODEL NOMENCLATURE. SCS-060-SAA. AA = 0 F Fan Cycling/Fan Speed/-30 F. SCS Series Flooded Head Pressure Control SA = -20 F Variable Speed Control EC = Intelligent Control Nominal Capacity in S = Single Circuit 1,000's of BTU/H D = Dual Circuit Notice This document contains information protected by copyright. All rights are reserved. The owner of the equipment for which this Manual is written may photocopy the contents of this Manual for internal use only.

2 No part of this docu- ment may be photocopied, reproduced, or translated into another language for use by anyone other than the owner of the equipment for which this Manual is written without the prior written consent of Stulz Air Technology Systems, Inc. (SATS). This document contains confidential and proprietary information of Stulz Air Technology Systems, Inc. Distributing or photocopying this document for external distribution is in direct violation of copyright laws and is strictly prohibited without the express written consent of SATS.

3 Unpublished rights reserved under the copyright laws of the United States and of other countries. Other brands and tradenames are trademarks of their respective owners. Copyright 2007 by Stulz Air Technology Systems, Inc. Printed in the United States of America. All rights reserved. Stulz Air Technology Systems, Inc. 1572 Tilco Drive Frederick, MD 21704. USA. 09/07. ( Sept, 2007). Air Technology Systems, Inc. SCS installation , Operation & Maintenance Manual TABLE OF CONTENTS. Introduction .. 1-1 Start-Up/Commissioning .. 3-1. General.

4 1-1 Operation .. 3-1. Product Description .. 1-1 Step by Step Start-Up Instructions .. 3-1. Capabilities and Features .. 1-1 Operational Description .. 3-1. Application Ranges .. 1-1. Safety Features .. 1-2 Maintenance /Repairs .. 4-1. General Design .. 1-2 Periodic General Maintenance .. 4-1. Product Warranty .. 1-3 General .. 4-1. Safety .. 1-4 Troubleshooting .. 4-2. General .. 1-4 Field Service .. 4-3. Safety Summary .. 1-4 Leak Detection .. 4-3. Leak Repair .. 4-3. installation .. 2-1 Refrigerant Piping .. 4-3. Receiving the Equipment.

5 2-1 Electrical System .. 4-3. Site Preparation .. 2-1. Rigging .. 2-1 Product Support Group .. 5-1. Mounting/Placement .. 2-1 Technical Support .. 5-1. Piping Connections .. 2-2 Obtaining Warranty Parts .. 5-1. Refrigerant Line Sizing .. 2-3 Obtaining Spare/Replacement Parts .. 5-1. Discharge Line .. 2-3. Liquid Line .. 2-4 List of Figures Weight of refrigerant .. 2-4. Figure 1- Typical Layout .. 1-2. Utility Connections .. 2-5. Figure 2- Ground Mounting .. 2-2. Main Power/Control Wiring .. 2-5. Figure 3- Side Clearance .. 2-2. System Settings and Adjustments.

6 2-7. R-22 Refrigerant Charging Procedures .. 2-7 Figure 4- Walled Areas or Pits .. 2-3. R-407C Refrigerant Charging Procedures .. 2-8 Figure 5- Piping installation .. 2-4. Head Pressure Controls .. 2-10 Figure 6- Dual Riser Piping .. 2-4. Condenser Fan Cycling .. 2-10 Figure 7- Field Wiring .. 2-5. Variable Condenser Fan Speed .. 2-10 Figure 8- Sample Nameplate .. 2-6. Flooded Head Pressure Control .. 2-11 Figure 9- Flooded Head Pressure Control Diagram .. 2-11. Refrigerant Characteristics .. 2-12. Pressure/Temperature Settings .. 2-12.

7 Appendix A - Forms Saturated Refrigerant Pressure Tables .. 2-12. Checklist for Completed installation .. A-1. Standard Refrigerant Charge .. 2-13. Periodic General Maintenance Refrigerant Charge Correction Factors .. 2-13. Checks and Service Checklist .. A-2. Appendix B - Glossary Definition of Terms and Acronyms .. B-1. ( Sept, 2007) i Air Technology Systems, Inc. SCS installation , Operation & Maintenance Manual INTRODUCTION which refrigerant is continuously circulated by the pressure differential created by a compressor. The General compressor increases refrigerant pressure to a level sufficiently high for it to be cooled and condensed into The Remote Air Cooled Condenser covered by this liquid by the effect of ambient air being drawn over the Manual is designed and manufactured by Stulz Air condenser coil.

8 SATS condensers are designed to Technology Systems, Inc. (SATS). Recognized as a operate with either R22 or R407C refrigerant. world leader, SATS provides precision cooling systems with the highest quality craftsmanship using the finest Outdoor air cooled condensers use fan cycling for low materials available in the industry. The unit will provide ambient head pressure control down to 0 F. Variable years of trouble free service if installed and maintained fan speed control is used for Operation in low ambient in accordance with this Manual .

9 Damage to the unit temperatures down to -20 F. Flooded head pressure from improper installation , Operation or Maintenance is control is used with fan cycling for low ambient not covered by the warranty. temperatures down to -30 F. This Manual contains information for installation , NOTE. Operation , Maintenance , troubleshooting and repair. SATS condensers are strictly for non-residen- STUDY the instructions contained in this Manual . tial applications. They must be followed to avoid difficulties. Spare parts are available from SATS to insure continuous opera- Operation of the condenser is controlled by a 24 VAC.

10 Tion. Using substitute parts or bypassing electrical or input signal from a system controller provided with the refrigeration components in order to continue opera- indoor evaporator section or, it can be configured for tion is not recommended and will VOID THE WAR- independant, stand-alone Operation . RANTY. Due to technological advancements, compo- Capabilities and Features nents are subject to change without notice. All Aluminum Cabinet Construction SATS Air Cooled Condensers are designed to reject Aluminum Fin Copper Tube Coil Construction heat from refrigerant based cooling equipment.