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Model Nomenclature Legend
Energy Recovery Ventilator
Electrical Specifications
Model
Voltage
ERVF-A3
230/208
CHERV-A3
ERVF-C3
460
CHERV-C3
General Description
The wall mount energy recovery ventilator was designed
to provide energy efficient, cost-effective ventilation
to meet IAQ (indoor air quality) requirements while
still maintaining good indoor comfort and humidity
control for a variety of applications such as schools,
classrooms, lounges, conference rooms, beauty salons
and others. It provides a constant supply of fresh air
for control of airborne pollutants including CO
radon, formaldehyde, excess moisture, virus and
bacteria.
The ventilator incorporates patented rotary heat
exchanger to remove both heat and moisture.
It is designed as a single package which can be
easily factory- or field-installed for new installations
or retrofit to the Bard W**A, W**H and C**H series
wall-mounted units. The package consists of a unique
rotary energy recovery cassette that can be easily
removed for cleaning or maintenance. The ERVF-*3/
CHERV-*3 has two 13" diameter heat transfer wheels.
The heat transfer wheels use a permanently bonded dry
desiccant coating for total heat recovery.
Ventilation is accomplished with two blower/motor
assemblies each consisting of a drive motor and dual
blowers for maximum ventilation at low sound levels.
The intake and exhaust blowers can be operated at the
same speed (airflow rate) or different speeds to allow
flexibility in maintaining desired building pressurization
conditions. Factory shipped on medium intake and low
exhaust. See Figure 6A on page 11 to change speeds.
The rotating energy wheels provide the heat transfer
effectively during both summer and winter conditions.
Provides required ventilation to meet the requirements
of ASHRAE 62.1 standard.
ERV
F
2-Piece Front Door
Control
Amps
Voltage
2.2
24V
1.2
24V
, smoke,
2
—
A
Electrical
A = 230/208 volt
B = 230/208 volt
C = 460 volt
NOTE: During operation below 5˚ F outdoor
temperature, freezing of moisture in the heat
transfer wheel can occur. Consult the factory if
this possibility exists.
General Information
The ventilator should only be installed by a trained
heating and air conditioning technician. These
instructions serve as a guide to the technician
installing the ventilator package. They are not
intended as a step-by-step procedure with which the
mechanically inclined owner can install the package.
The ventilator housing is shipped in one carton, which
contains the following:
1. Energy recovery ventilator
2. Service soor
3. Rain hood and mist eliminator
4. Installation instructions
Unpacking
Upon receipt of the equipment, be sure to compare the
model number found on the shipping label with the
accessory identification information on the ordering and
shipping document to verify that the correct accessory
has been shipped.
Inspect the carton housing of each ventilator as it is
received, and before signing the freight bill, verify that
all items have been received and that there is no visible
damage. Note any shortages or damage on all copies
of the freight bill. The receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier's agent. Concealed
damage not discovered until after loading must be
reported to the carrier within 15 days of its receipt.
3
Wall Mount – Cabinet Size
2 = W18-24A, L and H
3 = W30-36A, L and H
5 = W42-60A, L and H
Manual
2100-512B
Page
3 of 15
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