Installation, Operation, Maintenance

1 Modular water - cooled ChillersInstallation, Operation, Maintenance MS010XC, MS015XC, MS020XC, MS030XC, MS040XC, MS050XC, MS070XC, MS085 XCStandard and Total Access Modules2 ContentsSafety and Model Number Arrangement and Components, Standard and Total Access and , Flow Relief Piping, water Treatment Specifications, Pipe Assembly, Standard Assembly, Total Access Assembly, Leak Installation, Wiring, Electrical and Enclosure Panel Data 37 Daily Multistack installation and operation manual will assist in the proper installation and operation of Multistack modular chillers. Review this manual carefully. The information and illustrations contained in this manual are generalized. Consult with a Multistack representative to address specific installation and operating details not covered in this manual.

2 Good electrical and piping practices in accordance with all National and local codes must be followed. This equipment must not be installed near an open flame per local codes and ASHRAE specifications. Personnel servicing Multistack modular chillers must have, at minimum, a Class II EPA certification. Questions regarding the content of this manual and Multistack products should be directed to an authorized Multistack representative or to the Multistack Service Department at: (608) 366-2400 or via e-mail to Planning AheadTo ensure all warranties and a successful installation, a Factory Authorized Technician is required to perform start-up of the Multistack chiller . If start-up is to be performed directly by Multistack, a minimum of two weeks notice is required. Please call the Multistack Service Department at (608) 366-2400 to has a policy of continual improvement and reserves the right to change product design, literature and specifications without notice.

3 2016 MultistackThis manual provides information on the proper installation, operation and Maintenance requirements for Multistack water - cooled modular chillers. Follow these instructions to help ensure that the chiller performs properly. Failure to follow these in-structions can significantly affect the chiller s performance and reliability and may adversely affect the equipment InformationThis manual includes warnings, cautions and conveys serious hazards for injury or indicates risk of injury or warns of possible injury or calls out work practices that can result in optimal , cautions and notes include:DANGER: To avoid the risk of electrical shock, personal injury or death, disconnect all electrical power to the unit before performing any Maintenance or service. The unit may have more than one electrical power supply.

4 Assume all electrical wires are live, energized wires. Use lockout/tag outs. DANGER: Use extreme caution when working around electrical components, wiring and connections to avoid injury or death by electric : Never remove a lockout from equipment unless you placed it there. Each person shall place his/her own lock/tag when required to isolate an energy source. Do not start any adjustment, service or repair without verifying that the tag/lock out switch or control cannot be by-passed or over-ridden. Verify that the locked-out switch or control cannot be overridden. Test the equipment to be certain that the locked-out switch is de-energized and not simply malfunctioning. Press all start buttons to confirm that the equipment WILL NOT start. Confirm that the system being serviced or repaired is the system that has been locked out.

5 Before restarting equipment, verify all tools and other items have been removed, all machine guards are in place, all electric systems are reconnected, and personnel are clear of : During installation, testing, servicing and troubleshooting this product, it may be necessary to work with live electrical components. Only qualified licensed electricians or other properly trained persons may perform these tasks. Failure to follow all electrical safety precautions can result in death or serious injury. All HVAC equipment must be installed per the National Electric Code (NEC) and/or all applicable state/local : Incorrect handling of HVAC equipment can result in explosions, electrical shock or fire, causing property damage, injury and/or fatality. DANGER: HVAC liquids and chemicals can be dangerous if used incorrectly or if spills or accidents occur.

6 Handle detergents and solvents with care to avoid spills and burns. DANGER: Danger of explosion. Refrigerant cylinders can explode causing serious injury and/or death if not handled and stored : Only qualified, licensed electricians with proper personal protection equipment should wire Multistack chillers. Injury or death my result if not properly wired due to electric shock hazardWARNING: Danger of electrical shock. Many types of HVAC equipment have switches and regulators with electrical current on even when other parts of the equipment appear to be turned off. Main circuit breakers must be turned off before servicing equipment to avoid injury, : Be sure to use lifting slings with lifting capacity to safely handle unit weight. Consult the unit s as-built submittal drawings for unit weight data.

7 WARNING: If welding on chiller water connections, use proper electrical grounding to avoid damaging the compressors or chiller controls. Never weld directly on the heat exchanger shells. Only an authorized ASME-certified repair agency may weld directly on ASME-certified shells. After weld-ing, an R stamp is required. CAUTION: Working with HVAC equipment can be hazardous due to electricity, moving parts, chemicals, combustion and other hazards. Use safe work habits including proper tools and personal protective equipment. Understand and heed all safety information, installation guidelines and operation and Maintenance : Pressurized application of cleaning substances or refrigerants must be done with the correct procedures to ensure the safety of technicians and others, and avoid property damage.

8 NOTE: Use correct tools for HVAC equipment installation, Maintenance and adjustment. Use the correct tools to make tight connections without strip-ping threads or breaking screws and bolts. Use accurate refrigerant and electrical meters to properly maintain and diagnose HVAC equipment. 4 MS 050 X C or N 2 H 1 W 0 A A -410 ASeriesModule Nominal Capacity (10 - 160 tons)Compressor Type1 AHRI Certified (C - certified, N - Not certified)Configuration2 Voltage3 Module Number ( 1 - single, 2 - multiple)Application4 AHRI Version - if applicableEvaporator5 Condenser6 Refrigerant1 B: Bristol, C: Trane Cornerstone, R: Bitzer Screw, S: Trane Scroll, T: Danfoss Turbocor, Z: Copeland scroll (old elec), X: Copeland Scroll (ZP), A: Copeland Scroll (ZR)2 1- Standard, 2- Total Access, 3 - Evap extended headers, 4 - Cond extended headers, 5 - Both extended headers, V - others3 A - 208/3/60, L - 230/3/60, H - 460/3/60, C - 575/3/60, D - 200/3/50, E - 400/3/50, F - 380/3/60, S - 220/230/1/60, V - other4 A - Air cooled split, C - Single module temp controller, D - Cond unit, F - Fluid cooler (high temp),H - Heat recovery, R - Heat pump, W - water cooled5 A - Brazed SS, B - Brazed SMO, C- S&T copper, D - S&T cu-Ni, V - Other6 A - Brazed SS, B - Brazed SMO, C- S&T copper, D - S&T cu-Ni, E - Double wall brazed, V - OtherModel Number NomenclatureUnit NameplateThe chiller nameplate is located on the front of the control panel.

9 Use the unit model number nomenclature to identify specific features and options of an Multistack chiller module. Multistack water - cooled Modular Chillers Multistack invented the modular chiller . Multistack modular chillers are available in a wide range of capacities, and with two independent scroll compressors. Modules can be mix-matched and combined to create up to 15-module arrays and 1,275 tons of cooling capacity using environmentally friendly R-410A. Multistack modular chillers can help owners qualify for USGBC LEED points and significant utility rebates. Multistack s innovative modular design makes adding more capacity as easy as purchasing and installing more modules. Total Access Modular ChillersWith Total Access, heat exchangers are located on the outer edges of the chiller frame to provide easy serviceability with a small equip-ment room footprint.

10 Total Access options include 10- through 85-ton modular chillers. 5 UnitNameplateHigh Pressure TransducerHigh VoltagePanelIsolation/Disconnect Switch Buss BarDuctEntering Chilled water HeaderLeaving ChilledWater HeaderEvaporatorFilter/StrainersLeavingC ondenser water HeaderEntering Condenser water HeaderScroll CompressorsCondenserExpansion ValveLiquid Line Sight GlassLow Pressure TransducerLow VoltagePanelStandard Modular chiller ArrangementTotal Access Modular chiller ArrangementMultistack s Total Access option makes Maintenance and serviceability even easier by placing heat exchangers at the outside of the module frame. Manual isolation valves are factory-installed (Total Access units only) between the heat exchangers and water supply mains for heat exchanger isolation and removal without the need to remove a module or shut down the entire chiller while allowing access to all serviceable VoltagePanelHigh Pressure TransducerEvaporatorExpansion ValveLow VoltagePanelIsolation/Disconnect Switch Buss BarDuctCondenserFilter/StrainersScroll CompressorsLow Pressure TransducerIsolation ValveCondenser6 chiller ComponentsMaster Control PanelEach chiller has a master control panel that can be mounted on top of any of the module panels using provided knockouts.