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Exchange Capillary Core 

Whisper Comfort's unique core is made from a paper-like material  
and should never be washed or submerged in water. To clean, 
vacuum with a soft brush attachment. To clean, use vacuum suction 
with a soft brush attachment.  Do not use a vacuum to blow air 
through the ERV core as that may damage the core.

Mounting 

WhisperComfort is UL listed for ceiling or wall mount installation.  
It measures 14" wide and fits between joists 16" on center.  
Adjustable brackets and screws are provided to secure the unit  
to the joist on 4 corners.

Wiring 

Power consumption is 23 Watts at 40 CFM with a power rating  
of 120/60 V/Hz. Bring house power to the unit junction box and  
use 3 wires to connect the 2 switches.

Duct 

Insulated 4" duct is recommended. For cold climates, this will help 
avoid condensation build up. And for warm climates, this will help 

reduce heat transfer to supply air.

In order to reduce unnecessary airflow resistance, duct should be 
stretched straight and braced to avoid sagging. Assure that all duct 
connections are completely secured with duct tape and/or duct 
mastic material.

Termination/Supply Device 

The supply device will need to have the back draft damper removed 
and replaced with a screen to prevent insects and small animals  
from nesting.

The termination and supply devices should be placed a minimum 
of 3-feet apart. If placed closer than 3-feet, then the angle of each 
device should be mounted at 45-degrees in opposite directions.

Grille 

Follow the Operating Manual to remove the grille from the unit. 
Next, remove the filter from the inside louver of the grille. Never  
use gasoline, benzene, thinner or any other chemicals when  
cleaning the grille or ERV unit. Do not wash grille in a dishwasher 
which may cause it to deform. Instead, use light dish soap.

OPTIONAL ACCESSORIES

INSTALLATION

MAINTENANCE (Cleaning)

Grille

3' 

(920 mm)

Supply hood 

should include 

a bird screen 

with backdraft 

damper removed

Exhaust hood 
should include 
a backdraft 
damper

Alternative Panasonic Solution

SUPPLY

Optional Exterior Wall Cap – 
Model # FV-WC04VE1

EXHAUST

Typical Wall Cap Installation

Elbow 

Whisper Comfort's FV-EB04VE1 
styrofoam elbow accessory  
connects to the Y shaped adapter 
of the exterior wall cap to help 
simplify wall installation. The elbow 
also features double chambers 
for exhaust and supply air to help 
prevent cross contamination.

Exterior Wall Cap

Unlike previous installations where two wall caps were required, 
WhisperComfort’s FV-WC04VE1 polypropylene wall cap  
accessory with styrofoam adaptor conveniently allows both 
exhaust (from the right) and supply (from the left) airflow through 
a 5.5"-5.75" hole in the building envelope.  The dividers inside 
the bottom portion of the unique Y shape chamber and the new 
wall cap help prevent cross contamination.

To achieve optimum performance and air flow momentum, allow a 2-3 foot 
straight run of flex duct out of the unit before the first 90 degree bend. If you 
connect the ERV unit directly to the Y shaped adapter of the exterior wall cap, 
you can skip this step. 

Maintenance instructions can be found in the Operating Manual.

Insulated duct

Tape

Tape

Outdoor

Fig. 11-4

Indoor

Elbow

(FV-WC04VE1)

Exterior wall

Y-Shaped Adapter 

(FV-WC04VE1)

Exterior Wall Cap

(FV-WC04VE1)

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