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Product specifications

WSTBZF-J071-MT1FZ

VRF system — Medium ESP duct indoor unit

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The Welkin WSTBZF-J071-MT1FZ — VRF Medium ESP duct indoor unit.
ModelWSTBZF-J071-MT1FZ
SeriesMedium ESP duct indoor unit
Capacity (ton)2
Capacity (kW)7.1
QCC RegistrationRegistered
RegionUAE

Indoor unit

Power supply (V / Hz / phase)220–240 / 50 (60) / 1
Cooling capacity (kW)7.1
Heating capacity (kW)8
Indoor air flow by fan speed, high → low (m³/h)1680 / 1350 / 1100 / 950
Noise level by fan speed, high → low (dB(A))40 / 38 / 36
External static pressure, default (range) (Pa)50 (0–150)
Net dimensions (W × D × H, mm)1000 × 700 × 245
Packing dimensions (W × D × H, mm)1230 × 830 × 300
Net weight (kg)30
Gross weight (kg)36
Operating temperature (°C)16–32
Application area (m²)30–50

Fan motor and coil

Fan motor modelFP200B-ZL 310V
Fan motor brandZhongShan Dayang
Fan motor output (W)125
Fan speed by setting, high → low (rpm)1350 / 1215 / 1140 / 1080
Coil rows2
Fin pitch (mm)1.5
Fin materialHydrophilic aluminium fin
Tube outside Ø (mm) and typeØ 7, inner grooved
Heat exchange area (m²)8.21

Refrigerant pipe and wiring

Refrigerant pipe, liquid side, Ø (mm)9.52
Refrigerant pipe, gas side, Ø (mm)15.88
DrainageR3/4 in (DN20)
Power wiring, indoor (mm²)3 × 1.5
A/B signal wiring, IDU–ODU and IDU–IDU (mm²)2 × 0.5

Product features

Fresh air inlet

A knock-out for outside air, so the unit can ventilate as well as cool.

Two return air modes

Return air from the back or from underneath — the duct layout decides, not the unit.

Constant air flow

The fan holds its set air volume as filters load and ducts vary (on supporting models).