Table Of Contents - Daikin WRA Installation And Maintenance Data

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