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HERON 2.2 - Air Handler Installation; Key Installation Points

HERON 2.2
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7
AIR HANDLER INSTALLATION
The A/H needs to be installed in as central as possible position, such that no short
cycling of discharge air will occur. See figs. 6 & 7.
3 most important points that must be satisfied
1. The distance from the back of the cupboard to the back of the A/H must not be
less than 90 mm to allow proper air entry to the fan.
2. Two separate return air grilles/filters are supplied, and must be installed. If
only one is used, this will reduce the air flow back to the fan.
3. The A/H has a condensate drain underneath. This drain must continuously
“fall” from the outlet. It is recommended that the bottom of the A/H be 70 mm
above the bottom of the cupboard, to allow adequate fall.
A lesser amount is ok, provided much care is exercised to avoid “humps” that will
result in airlocks and the backup & overflow of condensate.
Air flow
Refrig. pipes run through
floor and up rear of wardrobe
Return air
filter assy.
False ceiling
N.B. unit may sit hard on
ceiling as condensate drain
can be run vertically.
Figure 7