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For the Installer
5.6 I
D
E
NSTALLING
UAL
XTERIOR
If desired, a Tandem transition kit can be used instead of 2 exterior hoods; but take into account
this device will generate approximately an additional 0.2 in w.g. static pressure depending on the
installation. If using the Tandem hood, we recommend using 6-in. ducts to minimize the reduction
caused by the tandem hood restriction.
The minimum joist opening needed to install the Tandem
the Tandem transition is 8¾" .
To connect the insulated flexible ducts to the Tandem transition (Exhaust air to outdoors and Fresh
air from outdoors), follow the instructions included with the Tandem transition kit (part no.14690).
*Patented.
5.7 C
ONNECTING THE DUCTS TO THE
•
Make sure that the balancing dampers are wide open before connecting the ducts to the ports.
•
If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts.
•
Make sure the vapor barrier on the insulated ducts does not tear during installation to avoid condensation
within the ducts.
5.7.1 I
NSULATED FLEXIBLE DUCTS
1.
Pull back the insulation to expose the flexible duct.
2.
Attach the flexible duct to the port using a tie wrap.
3.
Pull the insulation over the joint and tuck it in between the inner and outer rings of the double collar, then pull down the vapor barrier
(shaded part in illustrations below) over the insulation and over the outer ring of the double collar.
4.
Apply duct tape to the joint making an airtight seal. Avoid compressing the insulation when pulling the tape tightly around the joint.
Compressed insulation loses its R value and causes water dripping due to condensation on the exterior surface of the duct.
VJ0148
5.7.2 N
-
ON
INSULATED RIGID DUCTS
Do not use screws to connect the rigid ducts to the ports.
To avoid transmission of vibrations, always use a 6-inch section of flexible duct to connect rigid ducts to the unit. Use tie wraps to
perform connections, then seal with duct tape.
6. CONTROLS
6.1 S
ETTING EXTENDED DEFROST FOR
All units are factory set to normal defrost. In cold areas where the outdoor temperature can drop to -27°C and lower, it may be
necessary to set extended defrost. To do so:
•
During the first 2 seconds of the booting sequence, while the integrated control LED is GREEN, press and hold the push-button for
3 seconds.
•
The LED will turn AMBER and blink to indicate that the extended defrost has been successfully set.
•
The LED will then shut OFF and turn RED; this means that the booting sequence has resumed.
H
U
T
®* T
OOD
SING
ANDEM
®
transition is 9¾" . The maximum height of
U
NIT
C12 HRV, C12 ERV, 60H+ HRV
K
(
)
RANSITION
IT
OPTIONAL
CAUTION
CAUTION
60H+ ERV
AND
10
VR0003
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Troubleshooting
