Wiring Requirements - Lennox VRF VEHD019N432U Installation & Operation Instructions

High ESP Fan Coil Indoor Unit

3.4 Wiring Requirements

(1) Power Cord Size and Air Switch Capacity
Model
VEHD019N432U
VEHD021N432U
VEHD024N432U
VEHD027N432U
VEHD031N432U
VEHD034N432U
VEHD038N432U
VEHD043N432U
VEHD048N432U
VEHD055N432U
(1) Use copper wire only as unit's power cord. Operating temperature should be within its rated
value.
(2) If the power cord is more than 15 m (49-1/4 feet) long, please increase properly the sectional
area of power cord to avoid overload, which may cause accident.
(3) Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at 40°
(104°F) Cambient temperature when laying across plastic pipe. Air switch is D type and used at
40°C (104°F). If actual installation condition varies, please lower the capacity appropriately
according to the specifications of power cord and air switch provided by manufacturer.
(4) Install cut-off device near the unit. The minimum distance between each stage of cut-off device
should be 3 mm (1/8 inch) (The same for both indoor unit and outdoor unit).
Power Cord Size
220~240V-1ph-50
Hz
208~230V-1ph-60
Hz
Air Switch Minimum
apacity Sectional Area of
(A) Ground Wire
6 1.0
6 1.0
6 1.0
6 1.0
6 1.0
6 1.0
6 1.0
6 1.0
6 1.0
6 1.0
7
Minimum
Sectional Area of
Power
2
Cord(mm )
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0