Installation Manual InRow® Chilled Water Air Conditioners InRow® RC ACRC500, ACRC501, ACRC502 990-3238B-001 Publication Date: October 2014
Schneider Electric IT Corporation Legal Disclaimer The information presented in this manual is not warranted by the Schneider Electric IT Corporation to be authoritative, error free, or complete. This publication is not meant to be a substitute for a detailed operational and site specific development plan.
Table of Contents Safety................................................................................. 3 Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety Notices for All Installation Procedures. . . . . . . . . . . . . . . . . . . . . 4 General Information ...........................................................6 Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation........................................................................21 Removing the Doors and Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Removing the front and rear doors . . . . . . . . . . . . . . . . . . . . . Removing the side panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the side panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing the electrical panel cover . . . . . . . . . . . . . . . . . . . .
Safety Important Safety Information Read the instructions carefully to become familiar with the equipment before trying to install, operate, service, or maintain it. The following special messages may appear throughout this manual or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.
Safety Notices for All Installation Procedures Read and adhere to the following important safety considerations when working with this equipment. Follow all local and national regulations when handling refrigerants. DANGER HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E or CSA Z462. • This equipment must be installed and serviced by qualified personnel only.
CAUTION HAZARD TO EQUIPMENT OR PERSONNEL Ensure that all spare parts and tools are removed from the equipment before operating it Failure to follow these instructions can result in injury or equipment damage. NOTICE FREEZE HAZARD External water piping must have adequate freeze protection and must be correctly applied based on local climatic conditions and best practices. Install insulation and electric heat tracing (not supplied) on all exposed piping.
General Information Inspecting the Equipment Your Schneider Electric InRow RC Full Rack air conditioner has been tested and inspected for quality assurance before shipment from Schneider Electric. Carefully inspect both the exterior and interior of the equipment immediately upon receipt to ensure that the equipment has not been damaged during transit. Verify that all parts ordered were received as specified and that the equipment is the correct type, size and voltage.
Model Identification The model number can be found on the outside of the shipping crate and on the nameplate located inside the unit as shown. Use the table below to verify that the unit is the correct size and voltage.
Component Identification na2732a Install kit inventory Item Description Item Union end 2 Top power cord set (ACRC500 and ACRC502 only) PLC pipe thread, shutoff, 3/8-in.
na1824a Exterior components Item Description Removable rear doors Side panel lock Removable side panel Adjustable leveling foot InRow RC Installation Manual Item Description Caster Door handle and lock Display interface Removable front door 9
Interior components (front) DA DB FEE na2727a FEE Item 10 Description Item Description Fan Main feed breakers Fan guard User interface connectors Condensate drain pan Ground wire Condensate pump Supply air humidity sensor Electrical panel Supply air temperature sensor InRow RC Installation Manual
na2728a Interior components (rear) Item Description Chilled water coil Chilled water control actuator Chilled water three-way valve body Flow meter InRow RC Installation Manual Item Description Pipe chase Rear doors Air filters Return air temperature sensor 11
Electrical panel Item Transformers User interface connectors Main controller board Relay board Ground lug Main circuit breaker — power feed A Main circuit breaker — power feed B Automatic transfer switch (ATS) contactors ATS timers ATS transformer (ACRC501 only) ATS timer circuit breakers Fan circuit breakers Controller circuit breaker na2729a Description 12 InRow RC Installation Manual
Piping Diagrams INROW RC INROW RC BOTTOM PIPING RETURN SUPPLY TOP PIPING SUPPLY RETURN INROW RC na2572a INROW RC Item Description Item Description Flex hose or copper Circuit setter (field-installed) Copper tubing Hose end drain with cap Y-strainer with 20 mesh screen (field-installed)* *Blow down may be installed on Y-strainer. NOTE: Top or bottom entry can be chosen individually for each type of connection, i.e. power, condensate drain, chilled water supply, and chilled water return.
Connections All connections to and from the equipment can be made through either the top or the bottom of the equipment. All connections are made with quick-disconnect connectors so no soldering, welding, or gluing is necessary. See the following tables for information about the sizes and types of connectors. Power Connections for Power Feed A and Power Feed B Model Minimum Circuit Ampacity (MCA) Maximum Overload Protection (MOP) 10.9 6.
Pre-Installation Room preparation UNACCEPTABLE OPERATING LIMITS ACCEPTABLE OPERATING 15 20 25 30 35 40 45 AMBIENT TEMPERATURE (°C) 50 90 80 70 60 50 40 30 20 10 0 60 UNACCEPTABLE OPERATING LIMITS ACCEPTABLE OPERATING RANGE 65 70 75 80 85 90 95 100 105 110 115 na2544a 90 80 70 60 50 40 30 20 10 0 10 RELATIVE HUMIDITY (% RH) RELATIVE HUMIDITY (% During the design of the data center, consider ease of entry for the equipment, floor loading factors, and accessibility to piping and wiring.
Automatic Transfer Switch (ATS): The function of the ATS is to transfer the load from feed A to feed B if the power is lost on feed A. na2252a • Feed A (Primary Power Feed) supplies power to all functions in the equipment. • Feed B (Redundant Power Feed) supplies power to all functions in the equipment.
Service access An area of minimum 900 mm (36 in.) of clear floor space in front of and behind the equipment is recommended for servicing (208V equipment), or 1067 mm (42 in.) for servicing 400V and 480V equipment. All required normal maintenance can be performed from the front or rear of the equipment while in the row. An area of minimum 1200 mm (48 in.) of clear floor space in front of or behind the equipment is recommended to roll the equipment out of a row.
Dimensions and Weight Dimensions 2.1) 1070 (4 600 (23 .6) 1991 (78.4) na1822a 2156 (84.9) 4.8) 879 (34 1137 (4 .6) Weight Model ACRC500, ACRC501, ACRC502 Weight of Equipment, Packed Weight of Equipment, Unpacked 405 kg (892 lb) 345 kg (760 lb) Dimensions are shown in mm (in.).
Piping and Power Access Locations Top piping and power access locations (top view) 554 (21.81) 554 (21.81) 40 (1.58) 59 (2.32) 59 (2.32) 112 (4.4) 160 (6.3) na3816a 177 (6.97) 737 (29.02) 0 635 (24.99) 380 (14.98) 325 (12.81) 0 73 (2.86 ) 105 (4.12) 40 (1.58) REAR—HOT AISLE 211 (8.29) 176 (6.
Bottom piping and power access locations (bottom view) 345 (13.58) 397 (15.63) 0 0 796 (31.34) 172 (6.77) 184 (7.24) 187 (7.35) 425 (16.72) 479 (18.86) REAR—HOT AISLE )31.6( 651 na2104a 115 (4.53) 141 (5.54) 57.25 (2.25) 176 (6.91) FRONT—COLD AISLE Item Description Condensate drain Power connections—dual feed Communication connections—27.80 mm (1.09 in.) Condensate overflow Chilled water inlet Chilled water outlet Dimensions are shown in mm (in.).
Installation Removing the Doors and Panels WARNING MOVING PARTS HAZARD All doors and side panels must be locked during normal operation. Do not open the side panels while the fans are operating. Failure to follow these instructions can result in death, serious injury, or equipment damage. NOTICE EQUIPMENT DAMAGE • Unplug the display interface cables. • Do not lean the doors against a wall with the side panel latches facing the wall. This can deform the latches and prevent them from properly working.
na2315a Removing the side panel na2316a Installing the side panel 22 InRow RC Installation Manual
Removing the electrical panel cover Remove the electrical panel cover to install the main power cable. 1. Remove the five M4 screws securing the cover. 2. Remove the cover by opening it and sliding it toward the front of the equipment. WARNING ELECTRICAL HAZARD Ensure all wiring is not energized before routing cables into this equipment. Only qualified service and maintenance personnel should work on this equipment.
Leveling the Equipment CAUTION SHOCK HAZARD After reinstalling the front door, reconnect the ground wire and other wire connections. Failure to follow these instructions can result in injury or equipment damage. NOTE: The leveling feet at the corners of the equipment provide a stable base if the floor is uneven, but they cannot compensate for a badly sloped surface. 1. Remove the front and rear doors. See “Removing the front and rear doors” on page 21.
Mechanical Connections Top water piping NOTE: The top chilled water supply pipe is supplied with the equipment and must be installed on-site. NOTE: You may need to remove the top panel from the equipment to gain access to the water connections. 1. Remove the air filters. 2. Loosen the two screws holding the rear condensate drain pan bracket and remove the bracket. 3. Loosen the two screws holding the air filter bracket located on the left side of the unit and remove the bracket. 4.
Bottom water piping 1. Remove the insulation cap from the union (not shown). 2. Remove the union nut , and save it for reuse. Remove and discard the union end blank plate , and the ring seal . NOTE: New items are provided with the equipment. na2745a 3. Install the union nuts to field-supplied tubing . 4. Install new ring seals , extension adapters , and insertion adapters , as shown. Connect the pipe to the union. tighten the union to 20 Nm (14.8 ft-lb).
5. Position the insulated chilled water supply pipe in the equipment. Mount the gasket and connect the pipe to the union. Tighten the union to 20 Nm (14.8 ft-lb). 6. Insulate the joint with the provided insulation (not shown). 7. Reinstall the air filter bracket . 8. Reinstall the rear condensate drain pan bracket and the air filters. na2576a 9. Connect the water supply pipe to the field-installed water supply using the gasket saved from step 5, union end , and union nut .
Condensate pump na2345a The pump is factory-wired and piped internally to the condensate drain pan. The pump can move liquid a maximum of 18 m (60 ft), which may include a maximum lift of 3.5 m (11.5 ft) at a flow rate of 87 l/hr (23 gph). For example, if your lift is 3 m (10 ft), you will have 15 m (50 ft) of usable run remaining. The pump uses an on-board condensate high level float switch wired into the equipment for alarm capabilities.
Leak sensor na1584a Install up to four optional leak sensors (AP9326) as needed. 1. Connect the leak sensor to the equipment using the plug located as shown. na2758a LEAK DETECT 2. Position the leak sensor inside or outside the equipment. NOTE: Install leak sensors on a clean surface, and do not allow them to touch metal that is in an air stream. 3. Route the leak sensor to the outside of the equipment through either the bottom plate or the door. LOAD ON ON-BATT BYPASS FAULT ESC ? na2073a 4.
Filling and Purging the Unit When the unit has been properly piped, begin the filling process (top piping configuration shown). WARNING ELECTRICAL HAZARD Ensure that all electrical connections are unplugged before you introduce water into the unit. Failure to follow these instructions can result in death, serious injury, or equipment damage. 1. Open the 2-way bypass shutoff valve by turning the handle 90° to the right. Using a 2.5-mm hex key, turn the flow control actuator to the fully open position.
Chiller Three types of chillers can be connected to the unit: • Schneider Electric size-matched chiller/thermal storage system • Building chilled water system • Existing dedicated chiller InRow RC requirements Entering water temperature 7.2–12.8°C (45–55°F) Weight of unit fully flooded with chilled water 363 kg (800 lb) Flow rate 1.2–2.5 l/s (19.0–39.6 GPM) See the chiller installation, operation, and maintenance manuals for proper installation procedures.
Electrical Connections The following electrical connections are required in the field: • Controls (user interface, Network Management Card) • Communication (A-Link, Building Management System) • Power NOTE: All electrical connections must be in accordance with local and national codes and regulations. See the equipment nameplate for voltage and current requirements. All low-voltage connections, including data and control connections, must be made with properly insulated wires.
User interface connectors Item Description Rack inlet temperature sensors 1, 2, 3 A-Link IN A-Link OUT Network port Console port Customer output, NC (normally closed) Customer output, COM (common) Customer output, NO (normally open) Supply GND (Ground) Supply 12 Vdc (current limit: 20 mA) Supply 24 Vdc (current limit: 20 mA) Customer input + (12–30 Vac/Vdc, 24 Vdc @ 11 mA) Supply COM Modbus D1 Modbus D0 Modbus GND Supply air temperature sensor (front) Supply air humid
Description of user interface connectors Item Description Rack temperature sensors 1, 2, 3 A-Link IN A-Link OUT Network port Console port Customer output, Normally Closed (NC) Customer output, Common (COM) Customer output, Normally Open (NO) Three temperature sensors which must be installed on the cold aisle side of the server racks. See “Rack temperature sensors” on page 34. In and out connections for A-Link.
Installing the rack temperature sensors 1. Insert the rack temperature sensor connector in the temperature sensor port at the user interface. See “User interface connectors” on page 33. b. For a bottom installation, route the sensor through the wire clamps along the electrical panel and then push the sensor through the customer access hole in the bottom of the equipment. TEMPERATURE SENSOR 2. Route the sensor through either the top or the bottom of the adjacent server rack. WIRE CLIP 3.
Water outlet temperature sensors There are two water outlet temperature sensors, one for top connection and one for bottom connection. These sensors are wired to the main board on the electrical panel. TOP CONNECTION: WIRE WITH GREEN TIE WRAP IN J23 The unit is delivered with top connection as the default configuration, i.e., the wire with a green tie wrap is positioned in connector J23 (marked with green) on the main board.
Building Management System (BMS): The Modbus interface allows each InRow RC to communicate with the BMS. Use a three-wire cable to connect each InRow RC in turn. Wire a terminator resistor (150 Ohm, 1/4 W) into the Modbus master and the final InRow RC between Modbus D0 and Modbus D1. This terminator is included in the installation kit (see “Install kit inventory” on page 8). Each InRow RC has a three-wire Modbus terminal on the user interface. A connector with screw terminals is used to attach wiring.
Network port The Network port allows communication from the InRow RC to the network.
Power Connections Wiring configurations Incoming power may be supplied to the equipment using the supplied power cords (ACRC500 and ACRC502, top only). Incoming power may alternately be supplied by field wiring (top or bottom routing). WARNING ELECTRICAL HAZARD • Electrical service must conform to local and national electrical codes and regulations. • The equipment must be grounded. Failure to follow these instructions can result in death, serious injury, or equipment damage.
Install power cords (ACRC500 and ACRC502 only) NOTICE POWER SUPPLY CONNECTION Only qualified personnel may connect the equipment to utility power using direct wiring. All wiring must be done in compliance with local and national codes. Failure to follow these instructions can result in equipment damage. 1. Remove the factory-installed knockout plate from the top of the equipment. See “Top piping and power access locations (top view)” on page 19. Save the screw for later use. 2.
Bottom routing 1. Locate the supplied knockout plate. 2. Install the knockout plate on the top of the equipment where you removed the power connection plate and power cords. 3. Locate the power connection plate in the bottom of the unit. See “Bottom piping and power access locations (bottom view)” on page 20. 4. Loosen the screw securing the connection plate, and remove the plate. 5. Enlarge the two pilot holes in the connection plate as needed to accept conduit connectors. 6.
Voltage selection na2540b Your equipment can operate at various supply voltages, provided the proper voltage jumpers are connected to the input transformers. Read the part number on the jumpers connected at the factory and compare that number to the table below. If the correct jumpers for your input voltage are not connected, remove them and connect the proper jumper.
Worldwide Customer Support Customer support for this or any other product is available at no charge in any of the following ways: • Visit the Schneider Electric Web site to access documents in the Schneider Electric Knowledge Base and to submit customer support requests. – www.schneider-electric.com (Corporate Headquarters) Connect to localized Schneider Electric Web sites for specific countries, each of which provides customer support information. – www.schneider-electric.
