System air fantech VER 150 User manual

Your ventilation system should be installed in conformance with the appropriate provincial requirements or, in the absence of
such requirements, with the current edition of the National Building Code, and / or ASHRAE’s “Good Engineering Practices”.
Fantech reserves the right to modify, at any time and without notice, any or all of its products’ features, designs,
components and specifications to maintain their technological leadership position.
Please visit our website fantech.net for more detailed technical information.
United States
10048 Industrial Blvd., Lenexa, KS, 66215
Tel.: [phone]
Canada
50 Kanalflakt Way, Bouctouche, NB, E4S 3M5
Tel.: [phone]
VER 150
Energy Recovery Ventilator
Installation and Operation Manual
Item #: 445312
Rev Date: 2022-06-15
PARTS IN THE BOX
Energy Recovery Ventilator, 1 pc
Hanging Chain Kit, 1 pc
Hardware Kit, 1 pc
Drain Hose Kit, 1 pc
Operation and Installation Manual, 1 pc

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Note Warning/
Important
note
Information Technical
information
Practical tip
PLEASE READ AND SAVE THESE INSTRUCTIONS
Before installation careful consideration must be given to how this system will operate if connected to
any other piece of mechanical equipment, i.e. a forced air furnace or air handler operating at a higher
static pressure. After installation, the compatibility of the two pieces of equipment must be conrmed by
measuring the airow of the Energy Recovery Ventilator using the balancing procedure found in this manual.
It is always important to assess how the operation of any ERV may interact with vented combustion equipment (i.e.
Gas Furnaces, Oil Furnaces, Wood Stoves, etc.)
Products are designed and manufactured to provide reliable performance, but they are not guaranteed to be 100%
free of defects. Even reliable products will experience occasional failures, and this possibility should be recognized
by the user. If these products are used in a life support ventilation system where failure could result in loss or injury,
the user should provide adequate back-up ventilation, supplementary natural ventilation or failure alarm system, or
acknowledge willingness to accept the risk of such loss or injury.
Your ventilation system should be installed in accordance with the local building code that is in effect, in absence
of such requirements, it is recommenced to check with local authorities having jurisdiction in your area prior to
installing this product.

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TABLE OF CONTENTS
DETERMINING YOUR AIRFLOW REQUIREMENT ..................................................... 4
INSTALLATION EXAMPLES
Fully dedicated system ................................................................ 5
Partially dedicated system .............................................................. 6
Simplified Installation
Option 1 ...................................................................... 7
Option 2 .......................................................................8
EXTERIOR DUCTING INSTALLATION
Weatherhood Location ................................................................. 9
Installing the ducting to the weatherhood ................................................... 9
INTERIOR DUCTING INSTALLATION
General Tips ....................................................................... 10
Installing duct to ERV ................................................................ 10
Supply & Exhaust Air Grilles Location...................................................... 10
ERV INSTALLATION ......................................................................... 11
AIRFLOW ADJUSTMENT & BALANCING
General preparation ................................................................. 13
Adjusting airflow using integrated balancing system ........................................... 13
Balancing steps .................................................................... 14
LOW VOLTAGE CONTROL SYSTEMS ............................................................. 15
WIRING DIAGRAM ......................................................................... 17
TROUBLESHOOTING .........................................................................19
ERV CORE WASHING INSTRUCTIONS ............................................................20
PARTS LIST ...............................................................................21

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Room classification Number of rooms CFM (L/s) CFM Required
Master bedroom x 10 L/s (20 CFM) =
Basement yes or no =
Bedrooms x 5 L/s (10 CFM) =
Living room x 5 L/s (10 CFM) =
Others x 5 L/s (10 CFM) =
Kitchen x 5 L/s (10 CFM) =
Bathroom x 5 L/s (10 CFM) =
Laundry room x 5 L/s (10 CFM) =
Utility room x 5 L/s (10 CFM) =
Total Ventilation Requirements (add last column ) =
if yes add 10 L/s (20 CFM)
if no = 0
1 CFM = 0.47 L/s
1 L/s = 2.13 CFM
Room Count Method
DETERMINING YOUR AIRFLOW REQUIREMENT
ASHRAE method
Ventilation Air requirements
Floor area Bedrooms
1 2 3 4 5
Ft2m2CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s
<500 <47 30 128 38 18 45 21 53 25 60 28
205-1000 47-93 45 21 53 24 60 28 68 31 75 35
1001-1500 94-139 60 28 68 31 75 35 83 38 90 42
1501-2000 140-186 75 35 83 38 90 42 98 45 105 49
2001-2500 187-232 90 42 98 45 105 49 113 52 120 56
2501-3000 233-279 105 49 113 52 120 56 128 59 135 63
3001-3500 280-325 120 56 128 59 135 63 143 66 150 70
3501-4000 326-372 135 63 143 66 150 70 158 73 165 77
4001-4500 373-418 150 70 158 73 165 77 173 80 180 84
4501-5000 419-465 165 77 173 80 180 84 188 87 195 91
* ASHRAE 62.2-2016 Table 4.1, Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings.
Bathroom: If the HRV is going to provide the required local exhaust ventilation for each bathroom with each a continuous 20 CFM
(10 L/s), this ventilation rate can be considered as part of the whole-building ventilation rate.

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ERV ducting for fully Dedicated System
Stale air from inside
Outside
Fresh air to living areas
Fresh air from
outside
Stale air to
outside
INSTALLATION EXAMPLES
Example only – duct configuration may differ depending on the model.
FULLY DEDICATED SYSTEM
BEST FOR NEW CONSTRUCTION
1. Stale air is drawn from key areas of the home requiring local exhaust
(bathroom, kitchen, laundry room).
2. Fresh air is distributed directly to habitable rooms in the house
(bedrooms, living room)
3. The ERV’s airflow must be balanced after installation using the procedure
found in the section “AIRFLOW BALANCING”
Suggested installation for:
• Hydronic baseboard
• Inoor heating
• Electric baseboard
• Mini split heat pump
Benets: Provides the best
fresh air distribution in the
house; lowest operation cost
since the furnace/air handler
unit is not needed.

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ERV/ Furnace ducting for Partially Dedicated System
Stale air from inside
* Unit airflow should be balanced while ERV is on
“Normal” speed and furnace blower is running.
Outside Fresh air
to living
areas
1 m (3' 3")
min.
recommended
Cold air
return
Stale air to
outside
Fresh air from
outside
INSTALLATION EXAMPLES (CONT'D)
DIRECT CONNECTION of the FRESH air to living area to the RETURN PLENUM
of the AIR HANDLER (Stale air drawn from key areas of home)
PARTIALLY DEDICATED SYSTEM (BETTER)
1. In order to provide proper distribution of the fresh air, it is
recommended that the furnace blower be set to run continuously or
interconnected with ERV. See furnace electrical connection on page
18.
2. Stale air is drawn from key areas of the home (bathroom, kitchen,
laundry room).
3. Fresh air is supplied to the return air plenum of the furnace.
4. Due to the difference in pressure between the ERV and the equipment
it is being connected to the ERV’s airflow must be balanced on site,
using the procedure found in the section “AIRFLOW BALANCING”
* In the case of a multi-zone system, please contact Fantech customer
service prior to installing any installation type requiring the use of the
furnace interlock"
Fantech energy recovery ventilators (ERV) that use a supply fan shutdown for frost
prevention do not include an outdoor air motorized damper. If you are using a simplied
installation, i.e. connecting the ERV supply air duct to a furnace's return air duct, the ERV
must operate continuously. When the ERV is turned off, no warm exhaust air will ow
through the ERV but the furnace's fan will continue to draw in outdoor air directly into the
furnace. If it's cold outside, cold air will be introduced, without re-heating, directly into
the furnace.
If the ERV is installed such that the homeowner may turn off the ERV during the winter, we
recommend installing a motorized damper between the ERV's supply air and the furnace's
return air duct that closes when the ERV is not operating. See wiring diagram (gure 1).
Damper
Motor
24 VAC Transformer
COM NO
ERV Furnace interlock
See page 18.
24V
120V
Figure 1
*Transformer and Damper motor not included
Motorized Damper
Suggested installation for:
• Central furnace (air
handling unit or central
air conditioners)
• When ducting fresh
air to living area is not
possible or practical,
i.e. expensive or when
the central AHU will
operate year-round.
Benets: Conditions the
fresh air prior to
distributing it throughout
the house

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Stale air from inside
Outside
Fresh air to
living areas
1 m (3' 3")
min.
recom-
mended
Cold air
return
Stale air to
outside
Fresh air from
outside
* Unit airflow should be balanced while HRV is on
“Normal” speed and furnace blower is running.
Motorized
Damper
1 m (3' 3")
min.
recom-
mended
ERV/ furnace for Simplified Installation – Option 1
INSTALLATION EXAMPLES (CONT'D)
DIRECT CONNECTION of both the ERV SUPPLY AIR STREAM and EXHAUST AIR STREAM
to the FURNACE COLD AIR RETURN
SIMPLIFIED INSTALLATION (GOOD)
(RETURN/RETURN METHOD) - OPTION 1
1. Furnace blower must operate when ventilation from ERV is required. The
furnace should be set to run continuously or interlocked with ERV. See
furnace electrical connection on page 18.
2. A minimum separation of 1m (39’’) is recommended between the two
direct connections.
3. In order to prevent exhausting any fresh air, the ERV’s exhaust air connection
should be upstream of the ERV’s supply air connection when ducting to the
furnace’s cold air return.
4. Due to the difference in pressure between the ERV and the equipment it is
being connected to the ERV’s airflow must be balanced on site, using the
procedure found in the section “AIRFLOW BALANCING”
* In the case of a multi-zone system, please contact Fantech customer
service prior to installing any installation type requiring the use of the
furnace interlock"
Fantech energy recovery ventilators (ERV) that use a supply fan shutdown for frost
prevention do not include an outdoor air motorized damper. If you are using a simplied
installation, i.e. connecting the ERV supply air duct to a furnace's return air duct, the ERV
must operate continuously. When the ERV is turned off, no warm exhaust air will ow
through the ERV but the furnace's fan will continue to draw in outdoor air directly into the
furnace. If it's cold outside, cold air will be introduced, without re-heating, directly into
the furnace.
If the ERV is installed such that the homeowner may turn off the ERV during the winter, we
recommend installing a motorized damper between the ERV's supply air and the furnace's
return air duct that closes when the ERV is not operating. See wiring diagram (gure 1).
Damper
Motor
24 VAC Transformer
COM NO
ERV Furnace interlock
See page 18.
24V
120V
Figure 1
*Transformer and Damper motor not included
Suggested installation for:
• When bathroom and kitchen
already have local exhaust
system
• May be suitable for
retrotting
Benets: Least expensive
installation type

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* Ductwork layout may differ depend-
ing on model
DIRECT CONNECTION of the ERV SUPPLY AIR STREAM to the SUPPLY AIR SIDE on the
FURNACE & EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN
SIMPLIFIED INSTALLATION (GOOD)
OPTION 2
1. Furnace blower must operate when ventilation from ERV is required. The
furnace should be set to run continuously or interlocked with ERV. See
furnace electrical connection on page 18.
2. Due to the differences in pressure between the ERV and the equipment it is
being connected to, the ERV‘s airflow must be balanced on site, using the
procedure found section "AIRFLOW BALANCING".
* In the case of a multi-zone system, please contact Fantech customer
service prior to installing any installation type requiring the use of the
furnace interlock"
Installation examples (Cont'd)
In the case of a simplified
installation, Option 1 is
recommended.
Air from inside
* Unit air flow should be balanced while ERV is on "Normal" speed and
furnace blower is running.
Outside
Fresh air to living areas
1 m (3' 3") min. recommended
Cold air
return
ERV/Furnace ducting for Simplified Installation - Option 2
Suggested installation for:
• When bathroom and
kitchen already have local
exhaust system
• May be suitable for
retrotting
Benets: Least expensive
installation type
Fantech energy recovery ventilators (ERV) that use a supply fan shutdown for frost
prevention do not include an outdoor air motorized damper. If you are using a simplied
installation, i.e. connecting the ERV supply air duct to a furnace's return air duct, the ERV
must operate continuously. When the ERV is turned off, no warm exhaust air will ow
through the ERV but the furnace's fan will continue to draw in outdoor air directly into the
furnace. If it's cold outside, cold air will be introduced, without re-heating, directly into
the furnace.
If the ERV is installed such that the homeowner may turn off the ERV during the winter, we
recommend installing a motorized damper between the ERV's supply air and the furnace's
return air duct that closes when the ERV is not operating. See wiring diagram (gure 1).
Damper
Motor
24 VAC Transformer
COM NO
ERV Furnace interlock
See page 18.
24V
120V
Figure 1
*Transformer and Damper motor not included
Motorized
Damper
Motorized
Damper
Stale air to
outside
Fresh air from
outside

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EXTERIOR DUCTING INSTALLATION
WEATHERHOOD LOCATION
• Decide where your intake and exhaust hoods will be located.
Locating the Intake Weatherhood
• Should be located upstream (if there are prevailing winds) from the
exhaust outlet.
• At a minimum distance to 900 mm (3') away from dryer vents and furnace
exhaust (medium or high efficiency furnaces), driveways, oil fill pipes, gas
meters, or garbage containers.
• At a minimum height of 460mm (18’’) above the ground, or above the level
of expected snow accumulation.
• Ideally, keep weatherhoods 1m (3') from corners.
• Do not locate in the garage, attic, crawl space, or underneath deck.
Locating the Exhaust Weatherhood
• At least 460mm (18") above ground or above the depth of expected snow accumulation
• Ideally, keep weatherhoods 1m (3') from corners.
• Not near a gas meter, electric meter or a walkway where fog or ice could create a hazard
• Do not locate in a garage, workshop or other unheated space
INSTALLING THE DUCTING TO THE WEATHERHOODS
A well designed and installed ducting system will allow the ERV to operate at its
maximum efficiency. The inner liner of the flexible insulated duct must be secured to the
sleeve of the weatherhood (as close to the outside as possible) and to the appropriate duct
connection on the ERV. The insulation should remain full and not crushed. The outer liner,
which acts as a vapor barrier, must be completely sealed to the outer wall and the ERV
using tape and/or caulking. A good bead of high quality caulking (preferably acoustical
sealant) will seal the inner flexible duct to both the ERV duct connection and the
weatherhood prior to securing them.
To minimize airflow restriction, the flexible insulated duct that connects the two outside
weatherhoods to the ERV should be stretched tightly and be as short as possible.
Twisting or folding the duct will severely restrict airflow.
See “Installation Diagram Examples” for installation examples.
1Using the duct connection of
the outside hood, outline the
intake & exhaust holes to be
cut. The holes should be slightly
larger than the duct connection
to allow for the thickness of the
insulated flexible duct. Cut a
hole for both the intake and
exhaust hoods.
3 Push the hood into the opening
and then attach the hood to the
outside wall with mounting
screws.
Repeat the installation
procedure for both the supply
and exhaust hoods.
2Pull the insulated flexible duct
through the opening until it is
well extended and straight.
Slide the duct’s inner vinyl sleeve
over the hood duct connection
and secure. Pull the insulation
over the duct and pull the vapor
barrier over the sleeve. Secure
with appropriate tape or
sealant.
4Using a caulking gun, seal
around both hoods to prevent
any leaks.
STEPS FOR HOOD INSTALLATION:
36" (1m)
min.
INTAKE
OUTSIDE CORNER INSIDE CORNER
EXHAUST
18" (460mm) min. 18" (460mm) min.
6' (2m)
min.
36” (1m)
min.

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INTERIOR DUCTING INSTALLATION
• To maximize airflow through the ductwork system, all ducts should be kept short
and have as few bends or elbows as possible.
• 45º elbows are preferable to 90º.
• Use “Y“ ducts instead of “T” ducts whenever possible.
• All duct joints must be fastened with screws or duct sealant and wrapped with
aluminum foil duct tape to prevent leakage.
• Galvanized ducting from the ERV to the living areas in the house is recommended
whenever possible, although flexible ducting can be used in moderation when
necessary.
• To avoid possible noise transfer through the ductwork system, a short length
(approximately 300mm, 12’’) of nonmetallic flexible insulated duct should be
connected between the ERV and the supply/exhaust ductwork system.
• The main supply and return line to/from the ERV must have the same diameter as the
duct connection or larger.
• Branch lines to the individual rooms may be as small as 100mm (4’’).
INSTALLING DUCT TO ERV
For flexible duct installation, slide flexible ducting onto duct connection. Then install a cable tie over flexible duct to prevent leakage between the ducting and
the duct connection.
In the case of solid ducting, slide duct over duct connection, screw in place and seal.
SUPPLY AIR GRILLES LOCATION
In homes without a forced air furnace, fresh air should be supplied to all habitable rooms, including bedrooms and living areas. It should be supplied
from high wall or ceiling locations. Grilles that diffuse the air comfortably are recommended. In homes with a forced air furnace, you may want to connect
the ERV to the furnace ductwork (see information below).
EXHAUST AIR GRILLES LOCATION
The stale air exhaust system is used to draw air from the points in the house where the worst air quality problems occur. It is recommended that return
air ducts be installed in the bathroom, kitchen, and laundry room. Additional return air ducts from strategic locations may be installed. The furnace
return duct may also be used to exhaust from. In this method, the exhaust air is not ducted back from bathrooms, kitchens, etc to the ERV with
“dedicated lines”.
As per building codes and installation requirements for combustion appliances:
Air return ducts, or openings for air return, should not be placed in enclosed spaces containing combustion
appliances that are subject to spillage.

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ERV INSTALLATION
LOCATION
The ERV must be located in a conditioned space where it will be possible to conveniently service the unit. Typically
the ERV would be located in the mechanical room or an area close to the outside wall where the weatherhoods will
be mounted. If a basement area is not convenient or does not exist, a utility room may be used.
Attic installation must meet the following conditions:
• Attic temperature must be above freezing conditions at all times and for best performance should be 12°C
(54 °F).
• The condensate drain (if included) must be installed so that the condensate drains and is protected from freezing.
• The attic is easily accessible for equipment maintenance and inspection.
Connecting appliances to the ERV is not recommended. These include:
• Clothes dryer
• Range top
• Stovetop fan
• Central vacuum system
• Bathroom exhaust fans unless they are specifically designed for this purpose
These appliances may cause lint, dust or grease to collect in the ERV, damaging the unit.
Mounting- Chain mount
• Have a nearby power supply
(120 volts, 60Hz)
• Choose a location which
allows the possibility
of mounting the unit to
supporting beams.
• The unit should be level
in order to allow proper
condensate drainage
• To minimize noise, do not
install unit in living area
• Ensure proper drainage
Connecting any of these types of appliances to the ERV will void your warranty.
1 Place fastening hooks on
the strapping board or
the oor joists.
2 Attach a hanging chain
(provided) to each 19 mm
(3/4") bolt (provided) in the
top 4 corners of the unit
and tighten.
3 Hang the unit by slipping
a link onto the hanging
hooks, making sure the
unit is level.
4 Install a spring on each
chain. Hook the spring
in the links so a loop is
created in the chain. The
spring will then support the
unit's weight and absorb
vibrations.

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1 Remove the nutsert.
INSTALLING DRAIN LINE
Through normal operation and during its defrost mode, the ERV may produce some condensation. This water should flow into a nearby drain, or be taken
away by a condensate pump. The ERV and all condensate lines must be installed in a space where the temperature is maintained above the freezing point.
A “P” trap should be made in the drain line. This will prevent odors from being drawn back up into the unit.
2 Invert the drain nipple. Make
sure to place gasket between
the unit and the drain nipple
inside the unit.
3 Secure the drain nipple using
the nutsert.
4 Install the drain hose making a
"P" trap, secure the
condensate line drain
connection using the tube
clamp provided.
Fill the condensate line with
water.
The drain nipple is placed upside down in the unit to prevent it being damaged during shipping or the installation of the unit.
For both drain and drainless installation the drain nipple needs to be flipped.
Caution:
A Drain and Tubing (included) must be installed for all HRV units. For ERV units, drain is not required,
however, it is recommended for climates where outdoor temperature typically remains below -25°C (-13°F)
combined with an indoor relative humidity higher than 40% for a period of 24 hours or several days in a
row.

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AIRFLOW ADJUSTMENT & BALANCING
BALANCING THE AIRFLOWS IS CRUCIAL TO ENSURE OPTIMAL OPERATION OF THE UNIT. IF THE AIRFLOW IS NOT PROPERLY BALANCED, THE
FOLLOWING ISSUES MAY OCCUR:
• SIGNIFICANT POSITIVE OR NEGATIVE PRESSURE INSIDE THE HOUSE
• UNIT’S EFFICIENCY MAY BE NEGATIVELY AFFECTED
• UNIT’S DEFROST MAY NOT WORK EFFECTIVELY
• CAN LEAD TO AIR LEAKS OR BACKDRAFTING OF ANY COMBUSTION APPLIANCES.
The airflow adjustment and balancing procedure consists of adjusting the fresh airflow to make sure it meets the requirements for the building and then
balance the system to make sure there is an equal amount of stale air being exhausted. In the case that the airflow is not exactly the same, it is
recommended to have a higher stale airflow of up to 10% in colder climates to ensure that the temperature of the fresh airflow coming from the outside
is as close to the room temperature as possible.
GENERAL PREPARATION:
Before performing the adjustment and balancing for unit, make sure to check the following:
• Seal all the ductwork
• Fully open all dampers (if present)
• Turn off all other exhaust appliances such as range hood, dryers, bathroom fans, etc.
• If performing balancing during cold weather, make sure the unit is not operating in defrost mode.
• If the installation type is Simplified or Partially Dedicated, make sure that the furnace/air handler blower is operating at normal speed during
the balancing sequence.
• When reading with a mechanical type manometer (Magnehelic), make sure the manometer is placed on a level surface
For optimal performance, ERV unit should be re-balanced after a major renovation or after the installation of extra grilles or registers.
• In cold climates, continuous excessive positive pressure inside the house may drive moisture inside the external walls of the
house. Moisture present inside the external wall may condense if the outside temperature is cold enough and can cause damage
to structural components. A symptom of excessive positive pressure inside a house is frozen door locks.
• Continuous excessive negative pressure can have undesirable effects. In some geographic locations, negative pressure can
increase the infiltration of soil gases such as methane and radon. Negative pressure is also undesirable where combustion
equipment is present and may cause back drafting of the combustion gases.
ADJUSTING AIRFLOWS USING INTEGRATED BALANCING SYSTEM
Adjustable dampers are integrated into the Fresh Air to Building and the Stale Air to Outside duct connections. Those dampers replace the installation of
separate back draft and balancing dampers in the duct line.
The integrated dampers are preset at the fully opened position. In order to reduce the amount of airflow, turn the adjustable lever using a flat screw driver
by turning it counter clock wise. Turning the lever clockwise may damage the plastic screw head. Follow the balancing steps to properly adjust the airflow.

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BALANCING STEPS
Use balancing chart located on the
door of the ERV
STEP #1: Identify the desired airflow using the provided chart. From
the desired airflow (left column) identify the pressure reading
needed by simply following the line. Make sure to set the unit at
the Normal speed before performing the next step.
STEP #2: Measure the pressure reading by connecting a manometer
on the LOW and HIGH pressure ports located on the duct
connection. Refer to Illustration #1. If the pressure reading is
LOWER than the desired value, adjust the balancing dampers by
turning the adjustable arm counter clockwise until the correct
corresponding pressure value is reached. Refer to Illustration #2
Do the same for both the SUPPLY and EXHAUST airflows. If the
pressure reading is HIGHER than desired when the damper is fully
opened, please check the distribution system for any anomalies
that could increase the resistance in the distribution system.
• If the house is tightly sealed, adjusting one airflow
may affect the other airflow as well. It is recommended to check each airflow
again to make sure the value did not change dramatically during the
balancing procedure. Make adjustments as necessary.
• The pressure reading from the duct connection refers to the total pressure
loss from the distribution system. A well designed distribution system should
have a total pressure loss between 0.4” (100Pa) and 0.6” (150Pa). The
pressure reading can therefore be used to troubleshoot distribution system.
If the pressure reading is higher than 0.6” (150Pa), we recommend that you
inspect the system and check for closed grilles, blocked exterior hoods or
twisted flexible duct.
STEP #3: Secure the adjustable arm by tightening the set screw as shown in Illustration #3.
HIGH LOW LOW HIGH
SUPPLY
EXHAUST
Adjustment lever (in front) Set screw (on top)
Illustration #1
Illustration #3Illustration #2
BALANCING CHART (example only)
Airow Normal Speed Reduced Speed
CFM L/s ∆In W.G.
Pressure reading ∆Pa ∆In W.G. Pressure reading ∆Pa
110 52 0.36 91
100 47 0.46 114
90 42 0.55 137
80 38 0.64 161
70 33 0.74 184 0.13 32
65 31 0.78 195 0.16 40
60 28 0.83 207 0.19 48
55 26 0.87 219 0.22 55
50 24 0.92 230 0.25 63
EXAMPLE

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WALL CONTROLS
CENTRAL CONTROLS
These cannot be used with another central control
*Maintain polarity between control and HRV (+ →+ ; - →-)
ECO SERIES* FEATURES CONNECT TO
ECO-Touch® • Our most complete, yet easy-to-use control system
• Sleek design with backlight touchscreen LCD
• ECO mode selects the best operating mode and speed for the season, minimizing energy use associated with
ventilation
• Set preferred indoor relative humidity range and ventilation mode for day and night conditions
• No battery to replace, all programmed settings are retained during power outages
• Maintenance reminder indicator
• Error code messages reduce troubleshooting time
B
A
→
D+
ECO-TouchIAQ • Integrated VOC Sensor
• Our most complete, yet easy-to-use control system
• Sleek design with backlight touchscreen LCD
• ECO mode selects the best operating mode and speed for the season, minimizing energy use associated with
ventilation
• Set preferred indoor relative humidity range and ventilation mode for day and night conditions
• No battery to replace, all programmed settings are retained during power outages
• Maintenance reminder indicator
• Error code messages reduce troubleshooting time
ECO-Feel • ECO mode selects the best operating mode and speed for the season, minimizing energy use associated with
ventilation
• Integrated VOC Sensor
• No battery to replace, all programmed settings are retained during power outages
1. Ensure that unit is not plugged when connecting the control
2. Recirculation mode is only available with the Flex100H ES, HERO series and the models with the “R” sufx at the end of the model
number.
The wiring connectors can be removed for easier connection.
* Please see instruction manuals for individual controls for proper wiring and set up of control systems.

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AUXILIARY CONTROL –These controls can be paired with central controls or combined together.
*Maintain polarity between control and HRV (+ →+ ; - →-)
RTS SERIES FEATURES CONNECTS TO
• Wireless timer
• Can only be paired with the ECO-TouchIAQ
• 20/40/60 minute timer with LED light
• Boosts system to high speed with the touch of a button
• Up to 5 can be used in one system
• Use in bathroom, kitchen, laundry room
Connects wireleslly to the
RTS2* • 20- minute timer with LED light
• Boosts system to high speed with the touch of a button
• Up to 5 can be used in one system
• Use in bathroom, kitchen, laundry room
+T
-T
RTS5* • 20/40/60 minute timer with LED light
• Boosts system to high speed with the touch of a button
• Up to 5 can be used in one system
• Use in bathroom, kitchen, laundry room
WALL CONTROLS (CONT'D)
MDEH SERIES FEATURES CONNECT TO
MDEH1 • Rotary dial Dehumidistat
• Multiple units can be used
• We recommend setting the relative humidity above 80% during the summer
D
D
EDF SERIES FEATURES CONNECTS TO
EDF7 • MODE button provides 3 modes of operations: Ventilation , Recirculation and Standby
• User selected fan speed: Reduced, Medium, Normal and 20 minutes per hour
• AUTO setting allows the homeowner to deactivate the dehumidistat
• When the humidity exceeds the desired setpoint, the ventilation system operates at normal speed
• Once the desired humidity level is achieved, your ventilation system resumes to its previous mode of
operation.
EDF1 • Press button once for continuous Reduced speed
• Press button twice and the unit will cycle 20 minutes ON/ 40 minutes OFF and repeat
• EDF1 – Press button a third time and the system will run continuously on HIGH speed
W
W

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WIRING DIAGRAM
Observe polarity on all accessory controls where applicable.

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W
R
G
C
Y
WR G Y
Standard Furnace Interlock Wiring
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
W
R
G
C
Y
WR G Y
Alternate Furnace Interlock Wiring
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
WIRE JOINT
WIRING DIAGRAM (CONT'D)
WIRING DIAGRAM TO
FURNACE
FOR A FURNACE
CONNECTION TO
A COOLING SYSTEM:
On some newer furnaces and older
thermostats, energizing the R and
G terminal at the furnace has the
effect of energizing the Y at the
thermostat and thereby turning on
the cooling system. If you identify this
type of thermostat, you must use the
“Alternate Furnace Interlock Wiring”
Standard Accessory Control Contact
Alternative Accessory Control Contact
As per building codes and installation requirements for combustion appliances:
Air return ducts, or openings for air return, should not be placed in enclosed spaces containing combustion
appliances that are subject to spillage.

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TROUBLESHOOTING
Problem Causes Solutions
Air is too dry Dehumidistat control is set too low Increase the desired level of humidity. Change ventilation mode from
continuous mode to standby.
ERV out of balance Have contractor balance ERV airows
Air is too humid Dehumidistat control is set too high Reduce the desired level of humidity. Combine this with the use of continuous
exchange mode.
Sudden change in temperature Wait until outside temperature stabilizes (winter). Heating will also improve
situation.
Storing too much wood for heating Store a majority of your wood outside. Even dried, a cord of wood contains
more than 20 gallons of water.
Dryer vent exhaust is inside home Make sure the dryer vent is exhausting outside.
Poor air circulation near windows Open curtains or blinds.
ERV out of balance Have contractor balance ERV airows
Well sealed basement door is closed Open the door or install a grill on the door.
Persistent condensation
on window
Improper adjustment of dehumidistat control Reduce the desired level of humidity. Combine this step with use of continuous
exchange mode.
ERV out of balance Have contractor balance ERV
Poor air circulation near windows Open curtains or blinds.
Poor Air Flows 1/4" (6mm) mesh on the outside hoods is plugged Clean exterior hoods or vents
Filters plugged Remove and clean lter
Core obstructed Remove and clean core
Indoor grilles closed or blocked Check and open grilles
Inadequate power supply at site Have electrician check supply voltage
Ductwork is restricting airow Check duct installation
Improper speed control setting Increase the speed of the ERV (i.e. change unit control from REDUCED to NORMAL
speed)
ERV airow improperly balanced Have contractor balance ERV airows
Ducting has fallen down or been disconnected from ERV Have contractor reconnect ducting
Supply air feels cold Poor location of supply grilles, the airow may irritate
the occupant
Locate the grilles high on the walls or under the baseboards, install ceiling
mounted diffuser or grilles so as not to directly spill the supply air on the
occupant (eg. Over a sofa)
Turn down the ERV supply speed. A small duct heater (1kw) could be used to
temper the supply air
Placement of furniture or closed doors is restricting the movement of air in
the home
Outdoor temperature extremely cold If supply air is ducted into furnace return, the furnace fan may need to run
continuously to distribute ventilation air comfortably
ERV and/or Ducts frosting up ERV air ows are improperly balanced Have HVAC contractor balance the ERV airows
Malfunction of the ERV defrost system Note: minimal frost build-up is expected on the core before unit initiates
defrost cycle functions
Condensation or Ice Build Up in
Insulated Duct to the Outside
Incomplete vapor barrier around insulated duct Tape and seal all joints
A hole or tear in outer duct covering Tape any holes or tears made in the outer duct covering
Ensure that the vapor barrier is completely sealed.
Note: It is best to get the unit checked by a certied HVAC Contractor/Technician.

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Limited Warranty
• The Energy recovery core has limited 5Y
warranty.
• The warranty is limited to 5Y on parts and 7Y
on fans from the date of purchase, including
parts replaced during this time period. If there
is no proof of purchase available, the date
associated with the serial number will be used
for the beginning of the warranty period.
• The fans found in all Fantech ERVs require no
lubrication, and are factory balanced to
prevent vibration and promote silent
operation.
• The limited warranty covers normal use. It
does not apply to any defects, malfunctions
or failures as a result of improper
installation, abuse, mishandling,
misapplication, fortuitous occurrence or any
other circumstances outside Fantech’s
control.
• Inappropriate installation or maintenance may
result in the cancellation of the warranty.
• Any unauthorized work will result in
the cancellation of the warranty.
• Fantech is not responsible for any
incidental or consequential damages
incurred in the use of the ventilation
system.
• Fantech is not responsible for providing an
authorized service centre near the
purchaser or in the general area.
• Fantech reserves the right to supply
refurbished parts as replacements.
• Transportation, removal and installation fees
are the responsibility of the purchaser.
• The purchaser is responsible to adhering to all
codes in effect in his area.
* This warranty is the exclusive and only warranty in effect relative to
the ventilation system and all other warranties either expressed or
implied are invalid.
ERV CORE WASHING INSTRUCTIONS
For proper maintenance of your energy recovery core please follow these instructions
5
6
3
4
1Remove both lters by sliding them out.
2Remove the core from the unit.
3With one of your core's air inlets facing
down, place it in a large sink, bathtub, or
shower.
4Pour clean tap water through the face of the
core facing upwards until it runs clear.
Ensure the entire surface is rinsed.
5Rotate the core so that its other air inlet is
facing down and repeat step 5.
6With plates still oriented vertically allow the
core to dry, normally 2-3 hours.
7Slide back the core into the unit
8 Replace both lters.
1 2
7 8