| [1] [1]BSP-W/BSP Models [1] [2] |
SPU-2/SPU-2-W Model [3] | SED 750/250 Model [4] | SEM-1 Model [5] |
 [1][2] |
 [3][2] |
 [4][2] |
 [5] |
| Storage tanks with water surfaces layered property |
SPU-2:Buffering tank without coil SPU-2-W:Buffering tank withcoil |
Dual tanks, suitable for heating and hot water Consumption, with only one tank | Consumption single-coil hot water tank |