Installation Manual
 Page 21  
SPECIAL CONSIDERATIONS FOR EXTREME 
WEATHER
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90° 
angle to the direction of the wind. If needed, 
build a barrier in front of the unit to protect it 
from extremely heavy winds.
See Fig. 4.2  and  Fig. 4.3  below.
Strong wind
Strong wind
Strong wind
If the unit is frequently exposed to heavy 
rain or snow:
Build a shelter above the unit it to protect 
it from the rain or snow. Be careful not to 
obstruct air flow around the unit.
If the unit is frequently exposed to salty air 
(seaside): 
Use outdoor unit that is specially designed to 
resist corrosion.
Step 2: Install drain joint
Heat pump units require a drain joint. Before 
bolting the outdoor unit in place, you must install 
the drain joint at the bottom of the unit. Note 
that there are two different types of drain joints 
depending on the type of outdoor unit.
If the drain joint comes with a rubber seal  
(see Fig. 4.4 - A ), do the following:
1.  Fit the rubber seal on the end of the drain joint 
that will connect to the outdoor unit.
2.  Insert the drain joint into the hole in the base 
pan of the unit.
3.  Rotate the drain joint 90° until it clicks in place 
facing the front of the unit.
4.  Connect a drain hose extension (not included) 
to the drain joint to redirect water from the 
unit during heating mode.
If the drain joint doesn’t come with a rubber 
seal  (see  Fig. 4.4  - B ), do the following:
1.  Insert the drain joint into the hole in the base 
pan of the unit. The drain joint will click in 
place.
2.  Connect a drain hose extension (not included) 
to the drain joint to redirect water from the 
unit during heating mode.
Seal
Drain joint
(A) (B)
Base pan hole of
outdoor unit
Seal 
 IN COLD CLIMATES 
In cold climates, make sure that the drain hose 
is as vertical as possible to ensure swift water 
drainage. If water drains too slowly, it can 
freeze in the hose and flood the unit.
Fig. 4.2
Fig. 4.3
Fig. 4.4
Outdoor Unit 
Installation
Wind Baffle










