Product specifications
WSTBFJF-J125-4T1S
VRF system — High ESP duct indoor unit
| Model | WSTBFJF-J125-4T1S |
|---|---|
| Series | High ESP duct indoor unit |
| Capacity (ton) | 3.6 |
| Capacity (kW) | 12.5 |
| QCC Registration | Registered |
| Region | UAE |
Indoor unit
| Power supply (V / Hz / phase) | 220–240 / 50 (60) / 1 |
|---|---|
| Cooling capacity (kW) | 12.5 |
| Heating capacity (kW) | 13.3 |
| Indoor air flow by fan speed, high → low (m³/h) | 2000 / 1600 / 1400 |
| Noise level by fan speed, high → low (dB(A)) | 60 / 57 / 51 |
| External static pressure, default (range) (Pa) | 196 |
| Net dimensions (W × D × H, mm) | 1200 × 719 × 380 |
|---|---|
| Packing dimensions (W × D × H, mm) | 1235 × 760 × 415 |
| Net weight (kg) | 56 |
| Gross weight (kg) | 59 |
| Operating temperature (°C) | 16–32 |
| Application area (m²) | 50–90 |
Fan motor and coil
| Fan motor model | YDK200-4 |
|---|---|
| Fan motor brand | Sanxiang |
| Fan motor output (W) | 600 |
| Fan speed by setting, high → low (rpm) | 1230 / 1000 / 800 |
| Coil rows | 3 |
| Fin pitch (mm) | 1.6 |
|---|---|
| Fin material | Hydrophilic aluminium fin |
| Tube outside Ø (mm) and type | Ø 7, inner grooved |
| Heat exchange area (m²) | 12.64 |
Refrigerant pipe and wiring
| Refrigerant pipe, liquid side, Ø (mm) | 9.52 |
|---|---|
| Refrigerant pipe, gas side, Ø (mm) | 19.05 |
| Drainage | R3/4 in (DN20) |
| Power wiring, indoor (mm²) | 3 × 1.5 |
|---|---|
| A/B signal wiring, IDU–ODU and IDU–IDU (mm²) | 2 × 0.5 |
Product features
Flexible air intake
Intake options to suit the ceiling void on the 36K size.
Two return air modes
Return air from the back or from underneath — the duct layout decides, not the unit.
Two-way drain connection
The condensate drain can leave the unit on either side, whichever suits the pipework.