Daikin WRA Installation And Maintenance Data

Daikin WRA Installation And Maintenance Data Manual pdf 2 page image

Page 2 of 44 Water to Water Source Heat Pumps IM 1072-1ContentsProduct Nomenclature ........................................................3Safety Information ...............................................................4Safe Operation Rules .......................................................4Electrical Data ......................................................................5WRA, WHA, WCA 036 – 420 ............................................5Installation............................................................................6Pre-Installation and Code Requirements ..........................6Mounting the Unit..............................................................6Piping the Unit ..................................................................6Domestic Hot Water Heat Recovery .................................6Applications .........................................................................7Start Up.................................................................................8Check the following before powering the unit. ..................8Maintenance Procedures ..................................................8Dimensional Data ................................................................9WRA, WCA, WHA – Size 036-072....................................9WRA, WCA, WHA – Size 120-180..................................10WRA, WCA, WHA – Size 240-420.................................. 11Engineering Data ...............................................................12Physical Data ..................................................................12Operating Pressures (PSIG) ...........................................12Antifreeze Correction ......................................................13Waterflow Correction ......................................................13Wiring Diagram ..................................................................14208-230/60/1, Unit Sizes 036, 048, 060 and 072 ...........14Legend ............................................................................15Control ................................................................................16Optional Low Temperature Control Board "LTC" – 208-230/60/1, Unit Sizes 036, 048, 060 and 072...................16Compressor Control Module Functional Operation – 208-230/60/1, Unit Sizes 036, 048, 060 and 072...................17Wiring Diagram ..................................................................18208-230/60/3, Unit Sizes 036, 048, 060 and 072 ...........18Legend ............................................................................19Control ................................................................................20Optional Low Temperature Control Board "LTC" – 208-230/60/3, Unit Sizes 036, 048, 060 and 072...................20Compressor Control Module Functional Operation – 208-230/60/3, Unit Sizes 036, 048, 060 and 072...................21Wiring Diagram ..................................................................22208-230/60/3, Unit Sizes 120, 150, 180, 240 and 300 ...22(Continued) 208-230/60/3, Unit Sizes 120, 150, 180, 240and 300 ...........................................................................23Legend ............................................................................24Control ................................................................................25Optional Low Temperature Control Board "LTC" – 3 Phase,Unit Sizes 120, 150, 180, 240 and 300...........................25Compressor Control Module Functional Operation – 208-230/60/3, Unit Sizes 120, 150, 180, 240 and 300 ..........26Wiring Diagram ..................................................................27208/230-60-3, Unit Sizes 360, 420 .................................27(Continued) 208/230-60-3, Unit Sizes 360, 420 .............28Legend ............................................................................29Control ................................................................................30Optional Low Temperature Control Board "LTC" – 208/230-60-3, Unit Sizes 360, 420 ...............................................30Compressor Control Module Functional Operation –208/230-60-3, Unit Sizes 360, 420 .................................31Wiring Diagram ..................................................................32460-60-3, 575-60-3, Unit Sizes 360, 420 ........................32(Continued) 460-60-3, 575-60-3, Unit Sizes 360, 420 ....33Legend ............................................................................34Control ................................................................................35Optional Low Temperature Control Board "LTC" – 460-60-3, 575-60-3, Unit Sizes 360, 420 ....................................35Compressor Control Module Functional Operation – 460-60-3, 575-60-3, Unit Sizes 360, 420 ...............................36WHA Circuit Diagram ........................................................37WRA Circuit Diagram ........................................................38WCA Circuit Diagram ........................................................39Check, Test and Start Form ..............................................40General Service Guide ......................................................41Replacement Parts List .....................................................42