FANTECH FIT 120E Series Ceiling Mounted ERV Instruction Manual

FANTECH FIT 120E Series Ceiling Mounted ERV

PARTS IN THE BOX

• Energy Recovery Ventilator, 1 pc
• Ceiling bracket, 1 pc
• Angle brackets, 2 pcs
• External Damper Wire harness (for FIT 120E only), 1 pc
• Operation and Installation Manual, 1 pc

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”.

United States

• 10048 Industrial Blvd., Lenexa, KS, 66215
• Tel.: 800.747.1762 • Fax: 800.487.9915

Canada

• 50 Kanalflakt Way, Bouctouche, NB, E4S 3M5
• Tel.: 800.565.3548 • Fax: 877.747.8116

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.

• This product earned the ENERGY STAR® by meeting strict energy efficiency guidelines set by Natural Resources Canada and the US EPA. This product meets ENERGY STAR requirements only when used in Canada.
• To ensure quiet operation of the ENERGY STAR certified H/ERV, each product model must be installed using sound attenuation techniques appropriate for the installation.
• The way your heat/energy-recovery ventilator is installed can make a significant difference to the electrical energy you use. To minimize the electricity use of the heat/energy recovery ventilator, a stand-alone fully ducted installation is recommended. If you choose a simplified installation that operates your forced air system for room-to-room ventilation, an electrically efficient system that has an electronically commutated (EC) variable speed blower motor will minimize your electrical energy consumption and operating cost.
• Installation of a user-accessible control with your product model will improve comfort and may significantly reduce the product model’s energy use.

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 confirmed by measuring the airflow of the Fresh Air Appliance (FAA) using the balancing procedure found in this manual.

• It is always important to assess how the operation of any FAA may interact with vented combustion equipment (i.e. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.)

• Residential FAA ventilation systems are not suitable for pool or spa applications.

• 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.

DETERMINING YOUR AIRFLOW REQUIREMENT

Room Count Method

Room classification       Number of rooms                    CFM(L/s) CFM Required

Master bedroom|  | x 10 L/s (20 CFM)| =
Basement| yes or no| if yes add 10 L/s (20 CFM) if no = 0| =
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 ) =

• 1 CFM = 0.47 L/s
• 1 L/s = 2.13 CFM

ASHRAE method

Ventilation Air requirements

Floor area|  |  |  |  |  | Bedrooms|  |  |  |
 |  | 1|  | 2|  | 3|  | 4|  | 5|
Ft2| m 2| CFM| 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 FAA 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.

Installation examples

Suggested installation for

• Hydronic baseboard
• Infloor heating
• Electric baseboard
• Mini split heat pump

FULLY DEDICATED SYSTEM

• BEST FOR NEW CONSTRUCTION
• Stale air is drawn from key areas of home (bathroom, kitchen, laundry)
• Fresh air supplied to main living areas

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 FAA’s airflow must be balanced after installation using the procedure found in the section “AIRFLOW BALANCING”

DIRECT CONNECTION of the FRESH air to living area to the RETURN PLENUM of the FORCED AIR SYSTEM (Stale air drawn from key areas of home)

PARTIALLY DEDICATED SYSTEM (BETTER)

1. Forced air system blower must operate when ventilation from FAA is required. The system should be set to run continuously or interlocked with FAA. See forced air system electrical connection.
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 forced air system.
4. Before operation, the FAA’s airflow must be balanced on site. For this, use the procedure found in the section “AIRFLOW BALANCING”. During the balancing procedure, make sure the forced air system blower is running and the FAA is running at “Normal” speed.
5. In the case of a multi-zone system, please contact Fantech customer service prior to installing any installation type requiring the use of the forced air system interlock.
6. The FAA should only be paired with one forced air system. In the case where there are more than one forced air system please contact Fantech customer service prior to making a product selection.

Suggested installation for

• Forced air system (central furnace or central air conditioner)
• When ducting fresh air to living area is not possible or practical, i.e. expensive or when the forced air system will operate year-round
• Recommended install for units with a built-in outdoor air motorized damper (such as the FIT 120E-D & the FIT 120E-D-EC) to avoid drawing outdoor air directly into the forced air system when the unit is not running

Benefits: Conditions the fresh air prior to distributing it throughout the house.

FAA/Forced Air System Interlock ducting for Partially Dedicated System

• For Fresh Air Appliances (FAAs) that do not include an outdoor air motorized damper: If you are using a partially dedicated or simplified installation, i.e. connecting the FAA supply air duct to a forced air system’s return air duct, the FAA must operate continuously. When the FAA is turned off, no warm exhaust air will flow through the FAA but the forced air system’s blower will continue to draw in outdoor air through the FAA. When this happens, the introduction of unconditioned outdoor air to the indoors can increase the load on the system.
• If the FAA is installed so that the homeowner can turn off the FAA, we recommend installing a motorized damper between the FAA’s supply air and the forced air system’s return air duct that will close when the FAA is not operating. To install a damper accessory to the product, locate the auxiliary connector on the side of the electrical box. See Figure 1. Using the included wire harness, connect the damper accessory to the product.

DIRECT CONNECTION of both the FAA SUPPLY AIR STREAM and EXHAUST AIR STREAM to the RETURN PLENUM of the FORCED AIR SYSTEM

SIMPLIFIED INSTALLATION (GOOD) (RETURN/RETURN METHOD)

1. Forced air system blower must operate when ventilation from FAA is required. The system should be set to run continuously or interlocked with FAA. See forced air system electrical connection.
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 forced air system.
4. Before operation, the FAA’s airflow must be balanced on site. For this, use the procedure found in the section “AIRFLOW BALANCING”. During the balancing procedure, make sure the forced air system blower is running and the FAA is running at “Normal” speed.
5. In the case of a multi-zone system, please contact Fantech customer service prior to installing any installation type requiring the use of the forced air system interlock.
6. The FAA should only be paired with one forced air system. In the case where there are more than one forced air system please contact Fantech customer service prior to making a product selection.

Suggested installation for

• When bathroom and kitchen already have local exhaust system
• May be suitable for retrofitting
• Recommended install for units with a built-in outdoor air motorized damper (such as the FIT 120E-D & the FIT 120E-D-EC) to avoid drawing outdoor air directly into the forced air system when the unit is not running

Benefits: Least expensive installation type.

FAA/Forced Air System ducting for Simplified Installation

• For Fresh Air Appliances (FAAs) that do not include an outdoor air motorized damper: If you are using a partially dedicated or simplified installation, i.e. connecting the FAA supply air duct to a forced air system’s return air duct, the FAA must operate continuously. When the FAA is turned off, no warm exhaust air will flow through the FAA but the forced air system’s blower will continue to draw in outdoor air through the FAA. When this happens, the introduction of unconditioned outdoor air to the indoors can increase the load on the system.
• If the FAA is installed so that the homeowner can turn off the FAA, we recommend installing a motorized damper between the FAA’s supply air and the forced air system’s return air duct that will close when the FAA is not operating. To install a damper accessory to the product, locate the auxiliary connector on the side of the electrical box. See Figure 1. Using the included wire harness, connect the damper accessory to the product.

EXTERIOR DUCTING INSTALLATION

WEATHER HOOD LOCATION

• Decide where your intake and exhaust hoods will be located.

Locating the Intake Weather hood

• 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 weather hoods 1m (3′) from corners.
• Do not locate in the garage, attic, crawl space, or underneath deck.

Locating the Exhaust Weather hood

• At least 460mm (18″) above ground or above the depth of expected snow accumulation
• Ideally, keep weather hoods 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 FAA 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 FAA. 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 FAA using tape and/or caulking. A good bead of high quality caulking (preferably acoustical sealant) will seal the inner flexible duct to both the FAA 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 FAA 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.

STEPS FOR HOOD INSTALLATION

1. Using 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.
2. Pull 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.
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.
4. Using a caulking gun, seal around both hoods to prevent any leaks.

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 FAA to the living areas in the house is recommended whenever possible, although flexible ducting can be used in moderation when necessary.
• The main supply and return line to/from the FAA 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 FAA

• Position a 12″ (300mm) section of nonmetallic flexible duct onto duct collar.
• Using (1) cable tie, attach flexible ducting with the correct FAA duct collar.

Supply air grilles location
In homes without a forced air system, 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 system, you may want to connect the FAA to the system’s 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 forced air system’s 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 FAA 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.

FAA installation

• Have a nearby power supply (120 volts, 60Hz)
• Choose a location which allows the possibility of mounting the unit to supporting beams.
• To minimize noise, do not install unit in living area

LOCATION
The FAA must be located in a conditioned space where it will be possible to conveniently service the unit. Typically the FAA 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 FAA 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 FAA, damaging the unit.

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

The unit should be installed in the wall mounted position in regions where the outdoor temperature is 13°F (-25°C) or less for 48 consecutive hours or more while the indoor relative humidity is at 40% or more.

Mounting

CEILING INSTALLATION

1. Using the screw with washer mount the mounting bracket through the rubber insulator. Ensure the bracket is straight.
2. Using the screw with washer mount the brackets at the bottom of the unit.
3. Slide the unit the bracket as shown above.
4. Secure both side of the unit using the same method as step 1.

We recommend placing the duct on the unit at this stage of the unit’s installation.

WALL INSTALLATION

1. Using the screw with washer mount the mounting bracket through the rubber insulator. Ensure the bracket is straight.
2. Using the screw with washer mount the brackets at the bottom of the unit.
3. Slide the unit in the bracket and secure with setting screw.

Airflow balancing
Balancing must be completed using the Fantech Programmable Touch Screen Wall Control.

ENTERING BALANCING MODE
In the options menu during the initial 5 second countdown sequence, long press on “ECO” area for 5 seconds to enter basic balancing mode. The supply and exhaust fans are adjusted on high speed only and the offsets are proportionally applied to the medium and low speed automatically.

STAGE 1 (ADJUST LEVEL OF EXHAUST FAN IN HIGH SPEED)

• In this step, balance exhaust fan and measure airflow on the exhaust air side
• Pressing on “up” or “down” will adjust the fan speed in increments of 1%.
• Once the desired exhaust airflow is reached, press on “next” and move on to the next stage.

STAGE 2 (BALANCE SUPPLY FAN ONLY IN HIGH SPEED)

• In this step, balance supply fan and measure airflow on the supply air side
• Pressing on “up” or “down” will adjust the fan speed in increments of 1%.
• Once happy with the outcome, press on “next” to complete balancing
• The supply and exhaust offset values will be proportionally applied to low and medium speed as well.

WALL CONTROLS

Please see instruction manuals for individual controls for proper wiring and set up of control systems.

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” suffix at the end of the model number.

The wiring connectors can be removed for easier connection.

CENTRAL CONTROLS

• These cannot be used with another central control
• Maintain polarity between control and HRV (+ → + ; – → -)

WALL CONTROLS

• AUXILIARY CONTROL –These controls can be paired with central controls or combined together.
• Maintain polarity between control and FAA (+ → + ; – → -)

Wiring diagram – FIT 120E & FIT 120E-D

Observe polarity on all accessory controls where applicable.

Wiring diagram – FIT 120E-D-EC

Observe polarity on all accessory controls where applicable.

Standard Accessory Control Contact

WIRING DIAGRAM TO FORCED AIR SYSTEM

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 Accessory Control Contact”
• ContactAs 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.

Troubleshooting

level of humidity. Change ventilation mode from continuous mode to standby.
FAA out of balance| Have contractor balance FAA airflows
The 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 the outside temperature stabilizes (winter). Heating will also improve

the 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.

The dryer vent exhaust is inside the home| Make sure the dryer vent is exhausting outside.
Poor air circulation near windows| Open curtains or blinds.
FAA out of balance| Have contractor balance FAA airflows
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 the use of continuous

exchange mode.

FAA out of balance| Have contractor balance FAA
Poor air circulation near windows| Open curtains or blinds.
Poor Airflows| 1/4″ (6mm) mesh on the outside hoods is plugged| Clean exterior hoods or vents
Filters plugged| Remove and clean the filter
Core obstructed| Remove and clean core
Indoor grilles closed or blocked| Check and open grilles
Inadequate power supply at the site| Have an electrician check the supply voltage
Ductwork is restricting airflow| Check duct installation
Improper speed control setting| Increase the speed of the FAA (i.e. change unit control from REDUCED to NORMAL

speed)

FAA airflow improperly balanced| Have contractor balance FAA airflows
Ducting has fallen down or been disconnected from FAA| Have the contractor reconnect ducting
Supply air feels cold| Poor location of supply grilles, the airflow may irritate

the occupant

| Locate the grilles high on the walls or under the baseboards, and install ceiling-mounted diffusers or grilles so as not to directly spill the supply air on the occupant (eg. Over a sofa)

Turn down the FAA supply speed. A small duct heater (1kw) could be used to temper the supply of air

The placement of furniture or closed doors is restricting the movement of air in the home

The outdoor temperature is extremely cold| If supply air is ducted into the furnace return, the furnace fan may need to run

continuously to distribute ventilation air comfortably

FAA and/or Ducts frosting up| FAA airflows are improperly balanced| Have the HVAC contractor balance the FAA airflows
Malfunction of the FAA defrost system| Note: minimal frost build-up is expected on cores before the unit initiates defrost

cycle functions

Condensation or Ice Build Up in

Insulated Duct to the Outside

| Incomplete vapor barrier around the insulated duct| Tape and seal all joints
A hole or tear in the outer duct covering| Tape any holes or tears made in the outer duct covering

Ensure that the vapor barrier is completely sealed.

LED is flashing| Everything is in good operation|
No power is being transmitted to the Control Board| Make sure the unit is plugged in. Transformer may need to be replaced

Filters and FAA core washing instructions

For proper maintenance of your energy recovery core please follow these instructions.

1. To remove the door, loosen both latches on the bottom of the unit.
2. Rotate the metal plate holding the FAA core in place.
3. Remove both filters. Wash filters in warm soapy water then rinse and let dry.
4. Remove the core from the unit.
5. With one of your core’s air inlets facing down, place it in a large sink, bathtub, or shower.
6. Pour clean tap water through the face of the core facing upwards until it runs clear. Ensure the entire surface is rinsed.
7. Rotate the core so that its other air inlet is facing down and repeat step 5.
8. With plates still oriented vertically allow the core to dry, normally 2-3 hours.
9. Replace the filter.
10. Slide back the core into the system making sure that the arrow points to the motors. Rotate the metal plate holding the FAA Core in place.
11. Reattach the door.
12. Close the door, and secure both latches.

FAA maintenance chart

Maintenance Required Recommended Frequency Date Maintenance Performed

Clean and Un-block Outside

Hoods

| Annually
Clean and Inspect Duct Work| Annually
General Servicing by a Qualified 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.

WARRANTY

Make a scan of the QR code above to access Fantech’s warranty in English, French, or Spanish. Includes a 7y Motor, 5y on Electrical components and Core limited warranty.

• If additional support is needed to retrieve the warranty,
• visit fantech.net; call (800) 747–1762 (US),
• (800) 565–3548 (Canada), or +52 55 1328–7328
• (Latin America); email support@fantech.net; or mail
• us at 10048 Industrial Blvd, Lenexa, KS 66215
• United States or at 50 Kanalläkt Way, Bouctouche,
• NB E4S 3M5 Canada.

SERVICE MANUAL FIT 120E

BOM #| Description| FIT 120E| FIT 120E-D| FIT 120E-D-EC
---|---|---|---|---
1| Motor| 448002| 448002| 448002
2| Electrostatic Filters| 448004| 448004| 448004
3| Energy Recovery Cell| 448005| 448005| 448005
4| Capacitors| 450038| 450038| N/A
5| PC board| 428252| 428252| 428252
6| Auto-Transformer| 411963| 411963| 411963
7| Control Switch| 410213| 410213| 410213
8| Collar 5″| 414929| 414929| 414929
9| Door Assembly| 448006| 448006| 448006
10| Damper motor| N/A| 448007| 448007
 | Temperature Probe| 40286| 40286| 40286
 | MERV 8 filter (2 pack)| 461674| 461674| 461674
 | MERV 13 filter (2 pack)| 461675| 461675| 461675
 | Installation Manual| 445657| 445657| 445657
 | Wiring Diagram| 445787| 445787| 445787

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

References

• We simplify ventilation solutions | Fantech
• We simplify ventilation solutions | Fantech

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