System air Fantech SER260D User manual

SER260D
Energy Recovery Ventilators
Installation Manual
Item #: 428244
Rev Date: 2019-04-15
Your ventilation system should be installed in conformance with the appropriate provincial/state 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 www.fantech.net for more detailed technical information.
United States
10048 Industrial Blvd., Lenexa, KS, 66215
Tel.: [phone] • Fax: [phone]
Canada
50 Kanalflakt Way, Bouctouche, NB, E4S 3M5
Tel.: [phone] • Fax: [phone]

2
Note Warning/
Important
note
Information Technical
information
Practical tip
PLEASE READ AND SAVE THESE INSTRUCTIONS
For residential use only
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.

3
TABLE OF CONTENTS
DETERMINING YOUR AIRFLOW REQUIREMENT ..................................................... 4
INSTALLATION EXAMPLES
Fully dedicated system ................................................................ 5
Partially dedicated system .............................................................. 6
Simplified Installation ................................................................. 7
EXTERIOR DUCTING INSTALLATION
Weatherhood Location ................................................................. 8
Installing the ducting to the weatherhood ................................................... 8
INTERIOR DUCTING INSTALLATION
General Tips ........................................................................ 9
Installing duct to ERV ................................................................. 9
Supply & Exhaust Air Grilles Location....................................................... 9
ERV INSTALLATION ........................................................................ 10
AIRFLOW ADJUSTMENT & BALANCING
Start up procedure ...................................................................11
Airflow balancing .....................................................................11
LOW VOLTAGE CONTROL SYSTEMS ............................................................. 13
WIRING DIAGRAM ......................................................................... 14
TROUBLESHOOTING .........................................................................16
ERV MAINTENANCE CHART....................................................................17
ERV CORE WASHING INSTRUCTION..............................................................18
PARTS LIST ...............................................................................19

4
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
501-1000 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 ERV 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.

5
ERV ducting for fully Dedicated System
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.
Air from inside
* Unit air flow should be balanced while ERV is on "Normal" speed and
furnace blower is running.
* Ductwork layout may dif-
fer depending on model
Stale air to
outside
Fresh air from
outside
Fresh air to
living areas

6
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)
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
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
15.
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"
ERV/Furnace ducting for Partially Dedicated System
Air from inside
* Unit air flow should be balanced while ERV is on "Normal" speed and
furnace blower is running.
Air return
1 m (3' 3")
min.
recommended
Cold air
return
* Ductwork layout may dif-
fer depending on model
Stale air to
outside
Fresh air from
outside
Fresh air to
living areas
Fantech energy recovery ventilators (ERV) that use a supply fan shutdown for frost preven-
tion do not include an outdoor air motorized damper. If you are using a simplied instal-
lation, 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).
You may also choose to use a Fantech ERV that uses a recirculation defrost that incorpo-
rates an outdoor air damper.
Damper
Motor
24 VAC Transformer
COM NO
ERV Furnace interlock
See page 15.
24V
120V
Figure 1
*Transformer and Damper motor not included
Make sure the ERV is
capable of meeting the
required airow rate.
Motorized
damper

7
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)
Suggested installation for:
• When bathroom and kitchen
already have local exhaust
system
• May be suitable for
retrotting
Benets: Least expensive
installation type
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 15.
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"
Air from inside
* Unit air flow should be balanced while ERV is on "Normal" speed and
furnace blower is running.
1 m (3' 3")
min.
recommended
Cold air
return
* Ductwork layout may dif-
fer depending on model
ERV/Furnace ducting for Simplified Installation - Option 1
Stale air to
outside
Fresh air from
outside
Fresh air to
living areas
Fantech energy recovery ventilators (ERV) that use a supply fan shutdown for frost preven-
tion do not include an outdoor air motorized damper. If you are using a simplied instal-
lation, 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).
You may also choose to use a Fantech ERV that uses a recirculation defrost that incorpo-
rates an outdoor air damper.
Damper
Motor
24 VAC Transformer
COM NO
ERV Furnace interlock
See page 15.
24V
120V
Figure 1
*Transformer and Damper motor not included
Motorized
damper
1 m (3' 3")
min.
recommended
Air return

8
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)
INTAKE
OUTSIDE CORNER INSIDE CORNER
EXHAUST
18" (460mm) 18" (460mm)
3' (900mm)
min.
36” (1m)
REQUIRES A WEATHERHOOD
WITH A BACKDRAFT
DAMPER ON THE EXHAUST
SIDE.

9
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 300 mm, 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 100 mm (4’’).
Installing ducting 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.

10
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.
Connecting any of these types of appliances to the
ERV will void your warranty.
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
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.

11
Start up procedure
The Switch on the side of the unit is used to toggle between STANDBY, REDUCED speed and NORMAL speed modes.
Place the unit in NORMAL speed to perform the balancing.
Airflow balancing
IF THE UNIT'S AIR FLOWS ARE NOT PROPERLY BALANCED...
• THE UNIT'S EFFICIENCY MAY BE REDUCED.
• THE UNIT'S CORE MAY BECOME DAMAGED.
• NORMAL OPERATION OF THE UNIT COULD CAUSE THE PRESSURIZATION OR DEPRESSURIZATION OF YOUR
HOME, WHICH CAN LEAD TO AIR LEAKS OR BACKDRAFTING OF ANY COMBUSTION APPLIANCES.
The balancing procedure consists of measuring the supply air flow and the return air flow to ensure that they are equal. A difference of up to 10% is
considered acceptable. In the cases where the air flow is not exactly the same, it is recommended to have a higher return air flow to ensure that the
temperature of the supply air flow coming from outside is as close to room temperature as possible.
For optimal performance, ERV unit should be re-balanced after a major renovation or after the
installation of extra grilles or registers.
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.

12
Airflow balancing (Cont'd)
1Cut hole in duct and insert flow measuring
station. Make sure that the flow measuring
station’s air direction arrow points in the
direction of the airflow. Secure the flow
measuring station with duct tape.
2Before taking the reading, make sure that
the magnehelic gauge is level and at 0.
Refer to the flow measuring station’s
chart to determine your unit’s airflow
velocity.
3Adjust the “Supply Air Out” damper until
you reach the desired velocity. Follow
steps 1-3 to adjust the “Exhaust Air Out”
damper, if needed.
Measure
here
Minimum
457mm
(18")
Measure
here
Minimum
457mm (18")
• To avoid airflow turbulence and incorrect
readings, the airflow velocity should be
measured on a section of steel ducting.
Reading should also be taken at a minimum
distance of 457 mm (18") from the unit or
elbow. Measurement should also be made
prior to any transition in the duct work so
entire airflow is measured.
Measuring the airflow using station (grid) method
Adjusting airflows
A damper is integrated into the Fresh Air to Building collar and on to the Stale Air to Outside. This damper
replaces the installation of a separate damper into the Fresh Air to Building and on to the Stale Air to Outside
ducting line.
The damper-collar is pre-set in the fully opened position. If the procedure requires a reduction in airflow to
the fresh air duct, simply turn positioning knob located on the side of the collar clockwise until desired airflow
is obtained. The damper position can be determined by the orientation of the pointers situated on the side of
the damper. The damper is fully open when the pointers are towards the top of the collar (as shown in picture)
and fully closed when they are sideways.
Once procedure is completed, install a piece of tape over positioning knob to avoid any tampering by the home owner.
WARNING! DO NOT TURN POSITIONING KNOB COUNTERCLOCKWISE WHEN DAMPERS ARE FULLY OPENED AS DAMAGE MAY OCCUR
TO THE MECHANISM

13
AUXILIARY CONTROL – These controls can be paired
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
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
MDEH1 • Rotary dial Dehumidistat
• Multiple units can be used
• We recommend setting the relative humidity above 80% during the summer
Low Voltage Control Systems
* Please see instruction manuals for individual controls for proper wiring and set up of control systems.
CENTRAL CONTROLS
These control options can only be used individually
CONTROLS 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
outage
• Maintenance reminder indicator
• Error code messages reduce troubleshooting time
EDF7 • MODE button provides 3 modes of operations: Ventilation , Recircula-
tion 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 sys-
tem 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
• Press button a third time and the system will run continuously on HIGH
speed
1. Ensure that unit is not
plugged when connecting
the control
2. Recirculation mode is only
available with the “R” sufx
at the end of the model
number.
The wiring connectors
can be removed for
easier connection.
*Maintain polarity
between control
and ERV
(+ →+ ; - →-)
W
W
W
W
W
W
+T
-T
D
D
+T
-T

14
WIRING DIAGRAM
Speed
Jumper Settings
JP5 120V JP3 90V
NOTES: 1. Use specied CSA/UL certied
glass fuse:
MUST
be 3A with
LEGEND:
Low voltage factory wiring
Line voltage factory wiring.
F4
Damper Voltage
Jumper Settings
I²T>20.
HIGH
SPEEDS
LOW
55V
JP5JP3
75V
120V90V
LOW
JP3JP5
HIGH
120V 90V
75V
55V
SPEEDS
BROWN
BLUE
BLACK
BLACK
BROWN
BLUE
SUP 2
SUP 1
BLACK
BLUE
BROWN
BLUE
BROWN
BLACK
EXH 2
EXH 1
Optional components
JUMPER SETTINGS
J7 J6 J5 J4 J3 J2 J1
OFFSER260
Model
OFF
ON
OFFSHR260RD
ONONON
OFF
ONONON
OFF OFF OFF OFF
ON
T.P
STAND BY
NORMAL
REDUCED
BLK
SW1
RED
GRN
BLACK
WHITE
PC
NO COM
SW3
BROWN
TR1
BROWN GREY
BLACK YELLOW
RED
BLUE
WHITE
AUTO XFMR
D+
D-
W
W
T-
T+
A
B
S-
S+
J1
J2
J3
J4
J5
J6
J7
Damper Voltage
SPEED
SETTINGS
JUMPER
C
NC
NO
NO COM
SW2
WHT/BLK
CAP1
RED
BLUE
WHT/RED
BLACK
GREY
CAP3 CAP4
WHT/BLK
CAP2
WHT/RED
WHT/BLK
BLACK
GREY
RED
BLUE
WHT/RED
DAMPER
MOTORYel
Org Pur
Blk
Blu Brn
Observe polarity on all accessory controls where applicable.

15
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.

16
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.
Failed damper system may be stuck in recirculation
mode
Check defrost damper. If damper is always blocking incoming fresh air, have
contractor verify damper system.
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.
LED is ashing Everything is in good operations
LED is not ashing No Power is being transmitted to the Control Board Make sure unit is plugged.
Transformer may need replacing.
Note: It is best to get the unit checked by a certied HVAC Contractor/Technician.

17
Limited Warranty
• The Energy recovery core has limited
5 year warranty.
• The warranty is limited to 5 years on
parts and 7 years 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 MAINTENANCE CHART
Maintenance Required Recommended Frequency Date Maintenance Performed
Check and Clean Filters Every 3 months or if
dirty
Check Energy Recovery
Core
Every 6 months
Check Drain Pan and
Lines
Every 3 months
Vacuum the Inside of the
Unit
Annually
Clean and Un-block
Outside
Hoods
Annually
Clean and Inspect Duct
Work
Annually
General Servicing by a
Qualied Contractor
Annually
* Schedule may be altered to meet your own needs. More frequent servicing may be required depending on the
severity of your home's indoor and outdoor environments.
Contractor Telephone Number Date Serviced

18
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

19
PARTS LIST
BOM # Description SER260D
(99299)
1 8” Collar 410533
2 8” Collar Insert 411467
3 Temperature Probe 40326
4 Electrostatic Filters Kit 11.5” x 11” 40328
5 Energy Recovery Cell 422712
6 Door Switch 410867
7 Capacitors, 6uF 422677
8 Electronic Board 402004
9 Auto-Transformer 411963
10 Control Switch 410213
12 Kit Drain Plug 40315
13 Motor Assembly 405520
Kit, Filter,2xMERV6,11.5x11.4” 414911
Door Kit 427141
Kit, Chain 404261
12
13
5
4
2
1
10
9
8
7

Fantech reserves the right to make technical changes.
For updated documentation please refer to www.fantech.net
Fantech®