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2.
AIR FLOW
Due consideration must be given to air flow, i.e. do not obstruct inlet or outlet and ensure discharge air cannot
re-circulate to inlet. (See figure 1)
Suitable opening
Suitable opening
> 50 cm
PLANT ROOM
WALL
WALL
FIG 1 POSSIBLE POSITIONS OF A CALOREX 31 UNIT
SWIMMING POOL/SPA
CALOREX 31
CA
L
O
RE
X
3
1
CALOREX 31
CALOREX 31
CALOREX 31
Note: If multiple units are installed in an enclosed area then the inlet free areas required for each unit can be
added together to form one inlet aperture. BUT discharge from each unit must be kept separate and must not
be incorporated into one common duct system.
Required Free Areas to provide air flow to
and from heat pumps when installed in an
enclosed area or where required to pass air
through a wall, etc.
Free area is the available area through which air
can pass through a grille or louvres.
MODEL
Inlet Discharge
AW 631
0.1648
0.114
AW 831
0.2931
0.114
AW 1231
0.2931
0.114
AW 1531
0.3489
0.114
Minimum Free Area m²
TABLE 1
