CFM ECO-FLO Maintenance and service guide

Installation & Maintenance
ECO-FLO
ENERGY RECOVERY VENTILATOR
READ AND SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE

The ECO-FLO Energy Recovery Ventilator is not explosion proof and should not
be used when a potentially explosive situation exists.
TO REDUCE THE RIS OF FIRE, ELECTRIC SHOC , INJURY TO PERSONS, PLEASE
READ THESE INSTRUCTIONS CAREFULLY
1. Disconnect the ventilator from power mains prior to any installation or maintenance operations.
2. Use this ventilator only in the manner intended by the manufacturer. If you have questions,
contact the factory.
3. A qualied person(s) must perform installation work and electrical wiring in accordance with
all applicable codes and standards, including re-rated construction codes and standards.
4. While installing the ventilator, follow the safety regulations specied to the use of electric tools.
5. The installation location of the ventilator must prevent unauthorized access by unattended
children.
6. Do not use damaged equipment or cables when connecting the ventilator to power mains.
7. Do not lay the power cable of the ventilator in close proximity to heating equipment.
8. Protect electric parts of the ventilator against ingress of water. Do not touch the ventilator’s
controls or carry out installation and maintenance operation with wet hands. Do not wash
the ventilator with water.
9. Do not touch the unit when barefoot.
10 The ventilator should never be operated in an area with hazardous and/or explosive vapors.
11. Do not direct the airow produced by the ventilator toward open ame or ignition sources.
12. When cutting into walls, take care not to damage electrical wires and other hidden utilities.
13. Disconnect the ventilator from power supply and contact the Seller if unusual sounds are
generated or smoke is emitted.
14. The ventilator must be grounded.
1. Check for any visible damage to the ventilator before installing it. The housing internals must
be free of debris, which can damage the impeller blades.
2. For general ventilating use only. To avoid motor damage and noisy and/or unbalanced
impeller, keep the ventilator clean from drywall spray, construction dust, etc.
3. Misuse of the ventilator and/or any unauthorized design alterations or modifications voids
the warranty.
4. Avoid damaging the power cable. Do not bend or put foreign objects on the power cable.
5. The connection to the power mains must be made through a means of disconnection, which
is incorporated in the xed wiring in accordance with the wiring diagram, and has a contact
separation in all poles that allows for full disconnection under overvoltage category III
conditions.
6. For interior use only. The temperature where the interior ventilator is located must range from
34 F/1 C up to 104 F/40 C. Relative humidity shall not exceed 65%. Ambient temperature of
transported air should range from -4 F/-20 C up to 104 F/4 0 C. Do not operate the ventilator
in aggressive or explosive environments.
7 Not for installation or operation by any person that is unable to follow these safety guidelines.
8. Do not open the ventilator during operation.
9. To ensure optimal airow, do not close or block the ventilator’s inlet or outlet. Do not sit or
put objects on the ventilator.
10. In case of continuous operation of the ventilator, periodically check the security of mounting.
11. Store the fan in manufacturer’s packa in in a ventilated room at temperatures between 41 F
/ 5 C and 104 F / 40 C. Relative humidity should not exceed 70%.
SAFETY INSTRUCTIONS
2
WARNING
NOTICE
CAUTION

ECO-FLO ENERGY RECOVERY VENTILATOR
The ECO-FLO energy recovery ventilator is designed for through-the-wall mounting. The telescopic
design enables its installation in walls with various thickness (4.75” to 11.81”).
The delivery set includes:
• Indoor assembly of ventilator – 1 • Cardboard mounting plate – 1
• Telescopic air duct – 1 • Mounting kit – 1
• Ventilation hood – 1 • Mounting wedge – 1
• ERV core assembly w/lters – 1 • Sealing gasket – 1
• Remote control – 1 • Installation & maintenance manual – 1
4.75” - 11.81”
2.25” 3.125”
8.38”
9.44”
10.25”
5.56”11.81”
12.19”
3
1
7
9
8
5
6
4
2
3
1. Ventilation Unit must be installed on inner side of the wall. It is equipped with an automatic
shutter that closes the air duct during ventilation standby and prevents air backdraft.
2. Mounting Plate is used for installation of the ventilation unit on the wall and connecting it to
power mains.
3. Teles opi Du t with adjustable length is where airflow straighteners, ERV core and filters are
located.
4. Airflow Straighteners eliminate air turbulence inside the ventilator.
5. Air Filters are designed to purify supply air and prevent the ingress of foreign objects into the
ERV core. Filters also prevent ERV core soiling.
6. ERV Core extracts heat from exhaust air to warm up supply airflow. The cord laid inside the
ERV core is designed to remove the core from the ventilator. The ERV core is heat insulated
with a specially designed insulating material.
7. Exterior-Mounted Hood must be installed on the outer side of the wall. It directs air discharge
and prevents the ingress of water and other objects into the ventilator.
8. Filter Indi ator glows when filters need to be cleaned or replaced.
9. Infra-Red Re eiver and Light Sensor responds to signals from the remote control and detects
illumination level to activate/deactivate night mode.
The length of the telescopic air duct adjusts without cutting.
Technical specications are located on the ventilator casing.

The ventilator is rated for continuous operation.
OPERATION MODES
1. Natural Airflow
• Shutter is open; fan does not run.
• Air flows freely through ventilator and is purified by filters.
2. Supply Mode
• Ventilator continuously draws in fresh air from outside.
• Air is purified by the filters.
3. Ventilation Mode
• Ventilator operates in permanent supply or extract mode.
• Synchronized units can provide balanced ventilation.
4. Regeneration Mode
• Ventilator alternates between supply and exhaust every 70 seconds.
• Thermal energy is recovered, and the humidity setting is maintained.
Cy le I.
Warm stale air is extracted from the room. It heats and moisturizes the ERV core, transferring
up to 90% of thermal energy. In 70 seconds, the ventilator switches to supply mode.
Cy le II.
Fresh outside air flows through the ventilator, absorbing the accumulated moisture and thermal
energy in the ERV core and supplying warmed air into the room. In 70 seconds, the ventilator
switches back to extraction mode.
ECO-FLO ENERGY RECOVERY VENTILATOR
4
CYCLE I:
AIR EXHAUST
(Duration: 70 seconds)
CYCLE II:
AIR SUPPLY
(Duration: 70 seconds)

INSTALLATION
Disconnect the ventilator from power mains prior to any installation operations.
Working on or near energized equipment could result in death or serious injury.
The ventilator must not be installed in sites where the air duct may be clogged
by blinds, curtains, drapes, etc. to prevent dust deposition and accumulation. Also, curtains can
impede the normal circulation of air in the room, making the operation of the ventilator ineffective.
1. Prepare a round through hole in the outer wall. The hole size is shown (Figure 1). While preparing
the hole, consider the method of laying the power cable and other required cables. Use the
supplied template to mark the position of the duct opening and the cable exit point.
2. Install the telescopic duct inside the wall, using the supplied mounting wedges. Install the air
duct with a downward slope of 0.12” (3 mm) toward the exterior wall. The air duct must pro-
trude from the distance (0.4” - 4.3”) that enables installation of an outer ventilation hood. Seal
gaps between the wall and the telescopic duct with mounting foam (Figure 2).
5
WARNING
0.4” - 4.3”
0.315”
min 0.12” (3 mm)
Sealgaps between
the wall and
the telescopic duct
with mounting foam.
Mounting wedge
ø 7.09”
min 11.8”
min 11.8”
min 11.8”
Figure 2
Figure 1
Interior
wall
Exterior
wall
CAUTION

3. Remove the cover of the mounting plate to access the control board (Figure 3), which is
necessary for connection to power mains and ventilators in series. For details, see wiring diagrams
on pages 8 - 9. Carefully remove the cover of the mounting plate, avoiding damage to the
connecting cables. Install cables with care.
4. Reassemble the cover of the mounting plate in reverse order.
5. With the cardboard template, mark 4 holes for attaching the mounting plate (Figure 4).
6. Drill holes and insert dowels (Figure 5).
7. While placing a sealing gasket under the mounting plate, x the mounting plate to the wall
with screws from the mounting kit (Figures 6).
8. Consecutively install airflow straightener, filter, ERV core, second filter, and second airflow
straightener (Figure 7).
9. Attach the ventilation unit to the mounting plate (Figures 8).
INSTALLATION
Figure 8Figure 7
Figure 6Figure 5
Figure 4
Figure 3
Filter
Airflow
straightener
ERV
core
Filter Airflow
straightener
Ventilation
unit
6

Figure 12Figure 11
Figure 10Figure 9
4 holes
7.625”
9.75”
Ø 0.25”
8. Mark the fastening holes for the exterior-mounted hood and drill holes for the wall anchors
(Figure 9). For convenience of marking, use the back part of the exterior-mounted hood.
9. Insert the large wall anchors into the holes.
10. Disassemble the exterior-mounted hood to enable access to the fastening holes. Remove 5
screws and take off the front part of the exterior-mounted hood (Figure 10).
11. Fix the back part of the exterior-mounted hood on the wall with the brass screws (Figure 11).
12. Install the front part of the exterior-mounted hood (Figure 12).
INSTALLATION
77

Jumpers for set-up of
the Ventilation mode.
LN
L
N
120 V~ 60 Hz
Make sure to disconnect the ventilator from power mains prior to installation.
Only qualified person(s) should work on electrical equipment. Working on or near energized
equipment could result in death or serious injury.
The rated electrical parameters of the ventilator are given on the manufacturer’s
label. Any tampering with the internal connections is prohibited and will void the warranty.
The ventilator is rated for connection to a single-phase AC 1~120 V/60 Hz circuit that is equipped
with a magnetic-trip circuit-breaker integrated into the xed wiring system. For a unit supplied
without a power cord with plug, connect its upper terminal block to the AC power circuit coming
from the circuit-breaker. Use exible wires for electrical connection. The supply wires cross-section
should be selected in the range from 0.5 mm² (20 AWG) to 2.5 mm² (14 AWG).
The cable cross-section is provided only for reference. The actual conductor cross-section selection
must be based on its type, maximum permissible heating, insulation, length and installation
method.
WIRING DIAGRAMS
8
WARNING
Air supply Air exhaust
VENTILATION MODE SETTING
Air direction in Ventilation mode is determined by position of the
jumper on the control board. The circuit board of the controller is
located inside the ventilation unit.
CAUTION

All the ventilators connected in series must be grounded!
120 V~ 60 Hz 120 V~ 60 Hz
First ventilator Second ventilator
To the next
ventilator
CONNECTION OF VENTILATORS IN SERIES
When ventilators are connected in series, all connected ventilators are controlled with the first
ventilator and a remote control. To connect ventilators in series, connect the control terminals
with a cable as shown in the diagram below. Connect the second ventilator with the third ventilator
in the same way, etc.
Use a cable with a wire cross section of at least 0.25mm (22 AWG) (not included in the delivery
set). When ventilators are connected in series, power must be supplied individually to each fan.
WIRING DIAGRAMS
WARNING
9

Set the Speed Selection above to and the Operation Mode to to enable remote control.
The ventilator is operated with either the remote control or the buttons on the ventilator casing.
The buttons on the ventilator casing have limited functionality: only the medium and high speeds
can be activated; only three of the four modes of operation may be set.
The remote control has wider control capabilities. Guaranteed range of the remote control is 9.5 ft to
the receiver, which is located at the bottom of the casing of the ventilator. The ventilator stores the
current operation mode and, in case of power failure, returns to this mode when power is restored.
VENTILATOR CONTROLS
SPEED SELECTION SWITCH
High Speed (3) - Ventilator operates at maximum air capacity.
OFF - Ventilator does not operate. Shutter is closed.
Medium Speed (2) - Ventilator operates at 50% air capacity.
OPERATION MODE SWITCH
Ventilation Mode - Ventilators operate in either extract or supply mode,
depending on CN7 jumper position.
Regeneration Mode - Ventilators switch every 70 seconds between supply and
extraction, providing heat regeneration and humidity control.
Supply Mode - Ventilators operate in supply mode, irrespective of CN7 jumper
position.
REMOTE CONTROL
10
1. Power Button 2. Night Mode (ON/OFF)
When ctiv ted, ventil tor switches to low speed when room light
is turned off. Activ tion is confirmed by long sound sign l.
3. Speed Selection
High Medium Low
4. Oper tion Mode
Natural Airflow Supply Mode
Shutter is open; f n does not run. Ventil tors oper te in supply mode, irrespec-
tive of CN7 jumper position.
Ventilation Mode Regeneration Mode
Ventil tors oper te in either extr ct or supply
mode, depending on CN7 jumper position.
Ventil tors switch every 70 seconds between
supply nd extr ction, providing he t regen-
er tion nd humidity control.
5. Humidity Control (M y be ctiv ted with only the remote control)
45% Humidity 55% Humidity 65% Humidity
Humidity Control is possible only in Regener tion mode. Select desired Humidity Control set point. If humidity
exceeds the selected set point, ventil tor switches to higher speed. After re ching the desired humidity level,
ventil tor switches to lower speed. Press ny speed switch to de ctiv te Humidity Control.
VENTILATOR CONTROL

RECOMMENDED MAINTENANCE
Disconnect the ventilator from power mains prior to any maintenance operations.
Working on or near energized equipment could result in death or serious injury.
Maintenance of the ventilator means regular cleaning of its surfaces of dust, and cleaning or
replacing its filters.
1. Ventilation unit inspe tion and leaning (on e per year)
Take off the ventilation unit and clean the fan blades (Figure 13). Remove dust with a soft brush,
cloth or vacuum cleaner. Do not use water, abrasive detergents, solvents or sharp objects.
2. ERV ore and filter maintenan e (3-4 times per year)
a) Remove the first airflow straightener, first filter, ERV core, second filter and second airflow
straightener from the telescopic duct (Figure 14). To remove the ERV core, pull the specially
designed cord and use caution to avoid damage.
b) Clean filters as they get soiled, at least once every three
months.
- After 90 days of operation the filter replacement indicator
in the bottom of the mounting plate will glow red, indicating
it is necessary to switch off the ventilator and replace or
clean the filters.
- Wash the filters and let them dry. Only install dry filters in
the air duct.
- Vacuum cleaning is allowed.
- The filter rated service life is 3 years. For new filters contact
the Seller.
c) Some dust may accumulate on the ERV core even in case of
regular maintenance of the filters.
- Regularly clean the ERV core for maximum ventilator efficiency.
- Vacuum the ERV core at least once per year.
d) To reset the timer, install the airflow straighteners, ERV core
and filters into the ventilator and then press and hold the
power button for 10 seconds (Figure 15). The red indicator,
which indicates the filter is dirty, will turn off.
3. Exterior-mounted hood maintenan e (on e per year)
a) The exterior-mounted hood may get clogged with leaves and
debris, which may reduce the ventilator’s performance. Check
the exterior-mounted hood twice a year and clean it as often
as required.
b) To clean the exterior-mounted hood, disassemble it (Figure 16)
and then clean the hood and air duct.
4. Repla ement of the remote ontrol battery
a) Replace the battery of the remote control after prolonged use.
b) If the ventilator does not respond to the commands from the
remote control, it is a signal to replace the battery (type: CR2025).
c) To replace the battery of the remote control, remove the
battery holder, replace the battery, and reinstall the holder
(Figure 17).
WARNING
Filter
Airflow
straightener
ERV
core
Filter
Airflow
straightener
+
CR2025
3V
+
CR2025
3V
Battery type: CR2025
Figure 17
Figure 15
Figure 16
Figure 14
Figure 13
11

The ECO-FLO fan has been duly certied as serviceable.
Manufactured on (date):
Date of sale:
Sold by:
(name of trading enterprise, stamp of store)
CONNECTION CERTIFICATE
Company name:
Electrician name:
Date: Signature:
Due to constant product improvements, some models may differ slightly from those portrayed in
this manual.
ECO-FLO-I&M-2202
Bualo, New York | Mississauga, Ontario | Dayton, Ohio
www.continentalfan.com | 1-800-779-4021
ACCEPTANCE CERTIFICATE
TROUBLESHOOTING
Only qualified personnel should work on electrical equipment. Working on or
near energized equipment could result in death or serious injury.
1. If the fan fails to start, consult wiring diagram to ensure proper connection.
2. Check the incoming supply for proper voltage.
3. If the circuit breaker trips during start-up, turn off the ventilator and contact the Seller.
4. If the fan fails to start:
- Lock electrical service to the fan in the “OFF” position.
- Verify that the motor is not jammed and impeller isn’t clogged.
- Verify that the impeller blades are not soiled. Clean the blades according the Recommended
Maintenance section (page 11) in this manual.
5 . If the fan experiences low airflow:
- Adjust to a higher fan speed.
- Clean or replace the filters, and clean the fan and ERV core according the Recommended
Maintenance section (page 11) in this manual.
6 . If noise or vibration occurs:
- Tighten screws of the ventilator and exterior-mounted hood.
- Clean or replace the filters, and clean the fan and ERV core according the Recommended
Maintenance section (page 11) in this manual.
7. If fan fails to start, please contact Seller.
WARNING