Air Flow - Calorex Pro-Pac Series Owners & Installation Manual

2. AIR FLOW

Due consideration must be given to air flow, ie do not obstruct inlet or
outlet and ensure discharge air cannot recirculate to inlet (see figures
1 and 2)
FIGURE 1
TYPICAL OUTSIDE INSTALLATION
CANOPY OR OBSTRUCTION
TOO CLOSE
TABLE 1
Required Free Areas to provide air flow to and from heat pumps when
installed on an enclosed area or where required to pass through a wall
etc.
Free area is the available area through which air can pass through a
grille or louvres.
1. 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.
2. BUT discharge from each unit must be kept separate and must not be
incorporated into one common duct system.
3. 3. If the unit is installed in a plant room, the room should only be
accessible to authorised persons who are aquainted with the operation of
the equipment and relevant safety precautions.
SD566252 ISSUE 51
Grill or apertures MUST comply wi
FIGURE 2
TYPICAL INSIDE OR PLANT ROOM INSTALLATION
(NOT RECOMMENDED FOR LONG DUCT RUNS).
THE PLANT ROOM IS NOT TO BE USED AS AN
OCCUPIED SPACE.
figures (see Table 1)
TABLE 1
MODEL Minimum Free Area m²
Inlet
Pro-Pac 30 0.59
Pro-Pac 45 0.98
Pro-Pac 70 1.19
Pro-Pac 90 1.731
Pro-Pac 140 2.138
ADEQUATE
DUCTING
PRO-PAC
30/45/70
ADEQUATE
DUCTING
PRO-PAC
90/140
Discharge
0.25
0.42
0.52
0.84
1.04
7