It's necessary to install an electrical heating belt if water can't drain out in cold weather even the big drain hole has
opened.
7.4 Servicing space requirements
7.4.1 In case of stacked installation
1) In case obstacles exist in front of the air outlet side.
7.4.2 In case of multiple-row installation (for roof top use, etc.)
In case of installing multiple units in lateral connection per row.
NOTE
≥500mm
≥400mm
A
Unit
5~9kW
12~16kW
2) In case obstacles exist in front of the air inlet side.
A(mm)
≥1000
≥1500
C
B1
A(mm)
B1(mm)
Unit
≥2500
5~9kW
≥3000
≥1500
12~16kW
10
≥500mm
≥400mm
≥300mm
A
B2(mm)
C(mm)
≥1000
≥600
≥300
B2