Daikin McQuay AWS210BDS Installation Manual
                                                                                                                                                                                                                        | |
Contents
| 
IM 1167 13Installation and StartupFigure 13: Typical Field Water PipingNote: Connections for vent and drain fittings are located on the topand bottom of the evaporator.Note: Piping must be supported to avoid putting strain on theevaporator nozzles.Refrigerant ChargeAll packaged units are designed for use with R-134a and areshipped with a full operating charge. The operating charge foreach unit is shown in the Physical Data Tables beginning onpage 15.Glycol SolutionsWhen using glycol anti-freeze solutions, the chiller's capacity,glycol solution flow rate, and pressure drop through theevaporator can be calculated using the following:Note: The procedure below does not specify the type ofglycol. Use the derate factors found in Table 5 or Table 6forcorrections when using glycol.1 Capacity - Cooling capacity is reduced from that withplain water. To find the reduced value, multiply thechiller’s water system tonnage by the capacity correctionfactor to find the chiller’s capacity when using glycol.2 Flow - To determine flow (or Delta-T) knowing Delta-T(or flow) and capacity:3 Pressure drop - To determine pressure drop through theevaporator when using glycol, enter the water pressuredrop curve at the water flow rate. Multiply the waterpressure drop found there by the "PD" factor to obtaincorrected glycol pressure drop.4 Power - To determine glycol system kW, multiply thewater system kW by the factor designated "Power".Test coolant with a clean, accurate glycol solution hydrometer(similar to that found in service stations) to determine thefreezing point. Obtain percent glycol from the freezing pointtable below. On glycol applications, the supplier normallyrecommends that a minimum of 25% solution by weight beused for protection against corrosion or that additionalinhibitors should be employed.CAUTIONDo not use automotive grade antifreeze. Industrial grade glycols mustbe used. Automotive antifreeze contains inhibitors that will causeplating on the copper tubes within the chiller evaporator. The type andhandling of glycol used must be consistent with local codes.Performance Adjustment FactorsAWS chiller units are designed to operate with leaving chilledfluid temperatures of 20.0°F to 60.0°F (-6.7°C to 15.6°C).Consult the local Daikin McQuay sales office for performanceoutside these temperatures. Leaving chilled fluid temperaturesbelow 40°F (4.4°C) result in evaporating temperatures at orbelow the freezing point of water and a glycol solution isrequired. MicroTech III control inhibits compressor unloadingat leaving fluid temperatures below 30°F (-1°C).Low fluid temperatures or high equipment room humidity mayrequire optional double evaporator insulation. The systemdesigner should determine its necessity. The use of glycol willreduce the performance of the unit depending on its concentra-tion. Take this into consideration during initial system design.On glycol applications, the supplier typically recommends thata minimum of 25% solution by weight be used for protectionagainst corrosion, or additional inhibitors will be required.Min.Adjst.Flow gpm 5.8 7.5 13.7 18.0 27.5 65.0 125.0 190.0 205.0Lpm 1.3 1.7 3.1 4.1 6.2 14.8 28.4 43.2 46.6No Flow gpm 3.7 5.0 9.5 12.5 19.0 50.0 101.0 158.0 170.0Lpm 0.8 1.1 2.2 2.8 4.3 11.4 22.9 35.9 38.6Max.Adjst.Flow gpm 13.3 19.2 29.0 34.5 53.0 128.0 245.0 375.0 415.0Lpm 3.0 4.4 6.6 7.8 12.0 29.1 55.6 85.2 94.3No Flow gpm 12.5 18.0 27.0 32.0 50.0 122.0 235.0 360.0 400.0Lpm 2.8 4.1 6.1 7.3 11.4 27.7 53.4 81.8 90.8Table 4: Paddle Type Flow Switch Flow RatesNote: 1A segmented 3-inch paddle (1, 2, and 3 inches) is furnished mounted, plus a 6-inch paddle loose.Note: 2Flow rates for a 2-inch paddle trimmed to fit the pipe.Note: 3Flow rates for a 3-inch paddle trimmed to fit the pipe.Note: 4Flow rates for a 3-inch paddle.Note: 5Flow rates for a 6-inch paddle.VentDrainGateValveWaterStrainerVibrationEliminatorValvedPressureGaugeInOut Protect All Field PipingAgainst FreezingFlowVibrationEliminatorFlowSwitch BalancingValve GateValveFlowLiquidSuction TDeltafactorflowtonsGPM 24 Table 5: Ethylene Glycol Correction Factors% E.G Freeze Point Capacity Power Flow PDoF oC |
Related manuals for Daikin McQuay AWS170BDS VFD
This manual is suitable for:
AWS170BDS VFDAWS190BDS VFDAWS200BDS VFDAWS210BDH VFDAWS210BDSAWS225BDSAWS230BDH VFDAWS240BDP VFDAWS250BDH VFDAWS250BDSAWS260BDSAWS265BDP VFDAWS280BDH VFDAWS290BDP VFDAWS290BDSAWS300BDH VFDAWS310BDP VFDAWS310BDSAWS330BDH VFDAWS330BDP VFDAWS350BDH VFDAWS350BDSAWS365BDP VFDAWS375BDSAWS390BDH VFDAWS400BDP VFDAWS400BTSAWS410BDH VFDAWS425BTSAWS450BTH VFDAWS450BTSAWS470BTSAWS475BTH VFDAWS500BTH VFDAWS500BTSAWS525BTSAWS530BTH VFDAWS550BTS
manualsdatabase
Your AI-powered manual search engine