4. UNIT INSTALLATION (CONT’D)
11
4.7 CONNECTING INSULATED FLEXIBLE DUCTS TO THE UNIT PORTS
CAUTION
Make sure the vapor barrier on the insulated ducts does not tear during
installation to avoid condensation within the ducts.
VJ0060
Fresh air from outside
Aspiration d’air frais
Exhaust air to outside
Évacuation d’air vicié
a) b)
c) d)
VO0148
Exhaust air from building
Aspiration d’air vicié
• Each port is identified on top of the unit (see illustrations below). Attach the
fresh air to building duct and the exhaust air from building duct to their
corresponding port, using tie wraps (1).
4.6.5 HOW TO CONNECT NON-INSULATED FLEXIBLE DUCTS TO THE UNIT PORTS
1
Use the following procedure for connecting the insulated flexible ducts to the unit ports
(exhaust to outside and fresh air from outside).
a) Pull back the insulation to expose the flexible duct.
b) Connect the interior flexible duct to the port using a tie wrap.
c) Pull the insulation over the joint and tuck it between the inner and outer ring
of the double collar.
d) Pull down the vapor barrier (shaded part in illustrations below) over the
outer ring to cover it completely. Fasten in place the vapor barrier using the
port strap (included in unit parts bag). To do so, inser t one collar pin
through vapor barr ier and first strap hole, then insert the other collar pin
through vapor barrier and center strap hole and close the loop by inserting
the first collar pin in the last strap hole.
COLLAR PIN
COLLAR PIN
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