Installation Manual
Rinnai Tankless Rack System (TRS) Installation Manual     5 
CU Series 
Part No.
1
  Rack type  Configuration  Illustration 
TRW02CUiN  2-unit interior wall-hanging rack, NG 
TRW02CUeN  2-unit exterior wall-hanging rack, NG 
TRW02CUiP  2-unit interior wall-hanging rack, LP 
TRW02CUeP  2-unit exterior wall-hanging rack, LP 
TRW23CUiN
2
  2-unit interior wall-hanging rack, NG 
TRW23CUeN
2
2-unit exterior wall-hanging rack, NG 
TRW23CUiP
2
2-unit interior wall-hanging rack, LP 
TRW23CUeP
2
2-unit exterior wall-hanging rack, LP 
TRW03CUiN  3-unit interior wall-hanging rack, NG 
TRW03CUeN  3-unit exterior wall-hanging rack, NG 
TRW03CUiP  3-unit interior wall-hanging rack, LP 
TRW03CUeP  3-unit exterior wall-hanging rack, LP 
SE Series 
Part No.
1
  Rack type  Configuration  Illustration 
TRW02SEiN
2
  2-unit interior wall-hanging rack, NG RUC 
TRW02SEeN
2
  2-unit exterior wall-hanging rack, NG RUC 
TRW02SEiP
2
  2-unit interior wall-hanging rack, LP RUC 
TRW02SEeP
2
  2-unit exterior wall-hanging rack, LP RUC 
SE+ Series Featuring ThermaCirc360™ 
Part No.
1
  Rack type  Configuration  Illustration 
TRW02STiN  2-unit interior wall-hanging rack, NG 
TRW02STeN  2-unit exterior wall-hanging rack, NG 
TRW02STiP  2-unit interior wall-hanging rack, LP 
TRW02STeP  2-unit exterior wall-hanging rack, LP 
TRW03STiN  3-unit interior wall-hanging rack, NG 
TRW03STeN  3-unit exterior wall-hanging rack, NG 
TRW03STiP  3-unit interior wall-hanging rack, LP 
TRW03STeP  3-unit exterior wall-hanging rack, LP 
 Configurations 
4 
TRS conguraons and part numbers are listed in the following tables.  
1 
Part No. Legend: TR = Tankless Rack; W = Wall Hanging; S = Stand Alone; IL = Inline; ILW = Inline Wall Mount;  
2/3/4/5/6 = Number of Water Heaters; i/e = Interior/Exterior; NG/LP = Natural Gas/Liquid Propane 
Wall-Hanging Racks 
2
 This configuration is available only as a custom, made-to-order (MTO) solution with extended lead times. 










