VHR 150 - Fan Fantech - Free user manual and instructions

USER MANUAL VHR 150 Fantech

Rev Date: 2017-01-03

VHR150

Heat Recovery Ventilator

Exterior view of a beige industrial battery unit with black connectors and a brand logo (no readable text beyond branding)

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.: [phone] • Fax: [phone]

Canada

50 Kanalflakt Way, Bouctouche, NB, E4S 3M5

Tel.: [phone] • Fax: [phone]

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.

Note Warning/Important note		Information Technical information		Practical tip

PLEASE READ THIS MANUAL BEFORE INSTALLING UNIT

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 Heat Recovery Ventilator using the balancing procedure found in this manual. It is always important to assess how the operation of any HRV 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 recommended to check with local authorities having jurisdiction in your area prior to installing this product.

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 HRV 10

Supply & Exhaust Air Grilles Location.... 10

DUCTING INSTALLATION EXAMPLES. 11

HRV INSTALLATION 12

AIRFLOW ADJUSTMENT & BALANCING

General preparation 13

Adjusting airflow using integrated balancing system 13

Balancing steps 14

LOW VOLTAGE CONTROL SYSTEMS 15

WIRING DIAGRAM 16

TROUBLESHOOTING 18

HRV MAINTENANCE CHART 19

PARTS LIST 40

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) =

1 CFM = 0.47 L/s

1 L/s = 2.13 CFM

Total Ventilation Requirements [add last column] =

ASHRAE method

Ventilation Air requirements

Floor area		Bedrooms
		0-1		2-3		4-5		6-7 >7
Ft^2	m^2	CFM	L/s	CFM	L/s	CFM	L/s	CFM	L/s	CFM	L/s
< 1500	<139	30	14	45	21	60	28	75	35	90	42
1501-3000	139.1-279	45	21	60	28	75	35	90	42	105	50
3001-4500	279.1-418	60	28	75	35	90	45	105	50	120	57
4501-6000	418.1-557	75	35	90	42	105	50	120	57	135	64
6001-7500	557.1-697	90	42	105	50	120	57	135	64	150	71
>7500	>697	105	50	120	57	135	64	150	71	165	78

* ASHRAE 62.2-2010 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.

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 HRV's airflow must be balanced after installation using the procedure found in the section "AIRFLOW BALANCING"

Suggested installation for:

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

Benefits: Provides the best fresh air distribution in the house; lowest operation cost since the furnace/air handler unit is not needed.

HRV ducting for fully Dedicated System

graph TD
    A["Stale air to outside"] --> B["Inner Chamber"]
    B --> C["Outside"]
    D["Stale air from outside"] --> E["Inner Chamber"]
    E --> F["Outside"]
    G["Stale air from inside"] --> H["Inner Chamber"]
    H --> I["Outside"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fcc,stroke:#333
    style H fill:#ffc,stroke:#333

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 HRV. See furnace electrical connection on page 17.
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 HRV and the equipment it is being connected to the HRV'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"

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.

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

HRV/ Furnace ducting for Partially Dedicated System

graph TD
    A["Outside"] --> B["Stale air to outside"]
    B --> C["Stale air from outside"]
    C --> D["Stale air from inside"]
    D --> E["Motorized Damper"]
    E --> F["1 m (3' 3'') min. recommended"]
    F --> G["Cold air return"]
    G --> H["Forced Air Furnace"]
    H --> I["* Unit airflow should be balanced while HRV is on "Normal" speed and furnace blower is running."]

Fantech heat recovery ventilators (HRV) that use a supply fan shutdown for frost prevention do not include an outdoor air motorized damper. If you are using a simplified installation, i.e. connecting the HRV supply air duct to a furnace's return air duct, the HRV must operate continuously. When the HRV is turned off, no warm exhaust air will flow through the HRV 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 HRV is installed such that the homeowner may turn off the HRV during the winter, we recommend installing a motorized damper between the HRV's supply air and the furnace's return air duct that closes when the HRV is not operating. See wiring diagram (figure 1). You may also choose to use a Fantech HRV that uses a recirculation defrost that incorporates an outdoor air damper.

24 VAC Transformer 120V 24V COM NO HRV Furnace interlock See page 16. Damper Motor

Figure 1
*Transformer and Damper motor not included

INSTALLATION EXAMPLES (CONT'D)

DIRECT CONNECTION of both the HRV 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 HRV is required. The furnace should be set to run continuously or interlocked with HRV. See furnace electrical connection on page 17.
2. A minimum separation of 1m (39") is recommended between the two direct connections.
3. In order to prevent exhausting any fresh air, the HRV's exhaust air connection should be upstream of the HRV's supply air connection when ducting to the furnace's cold air return.
4. Due to the difference in pressure between the HRV and the equipment it is being connected to the HRV'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"

Suggested installation for:

• When bathroom and kitchen already have local exhaust system
• May be suitable for retrofitting

Benefits: Least expensive installation type

HRV/ furnace for Simplified Installation – Option 1

graph TD
    A["Stale air from inside"] --> B["1 m (3' 3'') min. recommended"]
    C["Fresh air from outside"] --> D["1 m (3' 3'') min. recommended"]
    E["Motorized Damper"] --> F["1 m (3' 3'') min. recommended"]
    G["Outside"] --> H["Stale air to outside"]
    I["Fresh air to living areas"] --> J["Cold air return"]
    K["Forced Air Furnace"] --> L["* Unit airflow should be balanced while HRV is on "Normal" speed and furnace blower is running."]

Fantech heat recovery ventilators (HRV) that use a supply fan shutdown for frost prevention do not include an outdoor air motorized damper. If you are using a simplified installation, i.e. connecting the HRV supply air duct to a furnace's return air duct, the HRV must operate continuously. When the HRV is turned off, no warm exhaust air will flow through the HRV 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 HRV is installed such that the homeowner may turn off the HRV during the winter, we recommend installing a motorized damper between the HRV's supply air and the furnace's return air duct that closes when the HRV is not operating. See wiring diagram (figure 1). You may also choose to use a Fantech HRV that uses a recirculation defrost that incorporates an outdoor air damper.

24 VAC Transformer 24V 120V COM NO HRV Furnace interlock See page 16. Damper Motor

Figure 1
*Transformer and Damper motor not included

Installation examples (Cont'd)

DIRECT CONNECTION of the HRV 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 HRV is required. The furnace should be set to run continuously or interlocked with HRV. See furnace electrical connection on page 17.
2. Due to the differences in pressure between the HRV and the equipment it is being connected to, the HRV'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"

Suggested installation for:

• When bathroom and kitchen already have local exhaust system
• May be suitable for retrofitting

Benefits: Least expensive installation type

In the case of a simplified installation, Option 1 is recommended.

HRV/Furnace ducting for Simplified Installation - Option 2

graph TD
    A["Outside"] --> B["Stale air to outside"]
    B --> C["Air from inside"]
    C --> D["Motorized Damper"]
    D --> E["Cold air return"]
    E --> F["Forced Air Furnace"]
    F --> G["Motorized Damper"]
    G --> H["1 m (3' 3") min. recommended"]
    I["Air from inside"] --> C
    J["Fresh air from outside"] --> C
    K["Stale air to outside"] --> B
    L["* Ductwork layout may differ depending on model"] --> M["1 m (3' 3") min. recommended"]
    N["* Unit air flow should be balanced while HRV is on "Normal" speed and furnace blower is running."] --> O

Fantech heat recovery ventilators (HRV) that use a supply fan shutdown for frost prevention do not include an outdoor air motorized damper. If you are using a simplified installation, i.e. connecting the HRV supply air duct to a furnace's return air duct, the HRV must operate continuously. When the HRV is turned off, no warm exhaust air will flow through the HRV 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 HRV is installed such that the homeowner may turn off the HRV during the winter, we recommend installing a motorized damper between the HRV's supply air and the furnace's return air duct that closes when the HRV is not operating. See wiring diagram (figure 1). You may also choose to use a Fantech HRV that uses a recirculation defrost that incorporates an outdoor air damper.

24 VAC Transformer 120V 24V COM NO HRV Furnace interlock See page 16. Damper Motor

Figure 1
*Transformer and Damper motor not included

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.

OUTSIDE CORNER INSIDE CORNER 36" (1m) INTAKE 18" (460mm) 3' (900mm) min. 36" (1m) EXHAUST 18" (460mm)

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 HRV 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 HRV. 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 HRV using tape and/or caulking. A good bead of high quality caulking (preferably acoustical sealant) will seal the inner flexible duct to both the HRV 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 HRV 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.

Outside wall Insulated flexible Ducting Hood Inner liner Sleeve Outer liner Bird Screen

STEPS FOR HOOD INSTALLATION:

Illustration of a robotic hand holding a circular object with a cross mark (no text or symbols)

Close-up of a robotic arm holding a camera lens (no visible text or symbols)

White plastic panel with hinged handle against a plain wall (no text or symbols visible)

Hand holding a tool interacting with a white vent or grille (no text or symbols visible)

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.
• 45^ elbows are preferable to 90^ .
• 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 HRV 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 HRV and the supply/exhaust ductwork system.
• The main supply and return line to/from the HRV must have the same diameter as the duct connection or larger.
• Branch lines to the individual rooms may be as small as 100mm (4").

Technical line drawing of a mechanical assembly with cylindrical components and mounting brackets (no text or symbols)

INSTALLING DUCT TO HRV

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 HRV 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 HRV 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.

DUCTING INSTALLATION EXAMPLES

Fully dedicated system Partially dedicated system

Bedrooms FEL 4 (4" Miter Elbow) Exhaust CG 4 (4" Adjustable Grill) Bathroom Central Control - optional Fresh air to living room 3m HRV 460 mm Supply Exhaust

FEL 4 (4" Mitter Elbow) Exhaust C5 4 (4" Adjustable Grill) Control Control - optional Bathroom Return Air Furnaco thermostat Bedrooms MIMEC SUPPLY / VENTURE AIR TWO SPEED FUMBLING HRV 460 mm HRY Connection Supply Exhaust Fresh Air Exhaust Air

Simplified installation - Option 1

Isometric line drawing of a house interior showing structural components and airflow paths (no text or labels)

Simplified installation - Option 2

Architectural diagram of a two-story house with internal components and airflow indicators (no text or labels)

HRV INSTALLATION

• 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

LOCATION

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

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

Mounting- Chain mount

Hand holding a small object against a metal shelf (no text or symbols visible)

1 Place fastening hooks on the strapping board or the floor joists.

Hand holding a tool near a mechanical component with chains attached (no visible text or symbols)

2 Attach a hanging chain (provided) to each 19 mm (3/4") bolt (provided) in the top 4 corners of the unit and tighten.

Simple line drawing of a spring attached to a hook, no text or symbols present

3 Install a spring on each chan. 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.

Whiteboard with 'fantech' logo and a hand holding it, no visible text or symbols on the board itself.

4 Hang the unit by slipping a link onto the hanging hooks, making sure the unit is level.

INSTALLING DRAIN LINE

Through normal operation and during its defrost mode, the HRV may produce some condensation. This water should flow into a nearby drain, or be taken away by a condensate pump. The HRV 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.

1 Install the drain nipple.

Secure the condensate line to the drain connection using a tie wrap or other appropriate method.

Pure technical line drawing of a mechanical assembly without any text, numbers, or symbols

2 Install the drain hose, making a "P" trap

Hand holding a vertical pole with a circular ring, against a plain background (no text or symbols visible)

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, HRV 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.

BALANCING STEPS

Use balancing chart located on the door of the HRV

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.

BALANCING CHART (example only)

Airflow Normal Speed Reduced Speed
CFM L/s		ΔIn W.G. Pressure reading	ΔPa	ΔIn W.G. Pressure reading	ΔPa
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

• 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.

HIGHLOWLOWHIGH SUPPLY EXHAUST

STEP #3: Secure the adjustable arm by tightening the set screw as shown in Illustration #3.
Illustration #1

Adjustment lever (in front) Set screw (on top) Illustration #3 Illustration #2

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 systemSleek design with backlight touchscreen LCDECO mode selects the best operating mode and speed for the season, minimizing energy use associated with ventilationSet preferred indoor relative humidity range and ventilation mode for day and night conditionsNo battery to replace, all programmed settings are retained during power outageMaintenance reminder indicatorError code messages reduce troubleshooting time
EDF7	MODE button provides 3 modes of operations: Ventilation , Recirculation and StandbyUser selected fan speed: Reduced, Medium, Normal and 20 minutes per hourAUTO setting allows the homeowner to deactivate the dehumidistatWhen 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
EDF1R • Press button once for continuous Reduced speed	Press button twice and the unit will cycle 20 minutes ON/ 40 minutes OFF and repeatEDF1 – Press button a third time and the system will run continuously on HIGH speedEDF1R –Press button a third time and the system will run recirculation on HIGH speed

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

1. Ensure that unit is not plugged when connecting the control
2. Recirculation mode is only available with the "R" suffix at the end of the model number.

Close-up of a hand holding a small electronic component with visible pins and traces (no text or symbols)

The wiring connectors can be removed for easier connection.

*Maintain polarity between control and HRV

$$ [ + \rightarrow +; - \rightarrow - ] $$

WIRING DIAGRAM

Observe polarity on all accessory controls where applicable. REDUCED STAND BY NORMAL SW1 RED GRN BLK SPEEDS LOW 55V HIGH 120V 90V 75V JP3JP5 SPEED JUMPER SETTINGS T.P. WHITE BRIN SW3 NO COM PC (8μf)CAP2 BROWN BLUE BLACK EXH GREY BLACK (8μf)CAP1 WHT/BLK BROWN BLUE BLACK SUP TR1 WHITE BLUE YELLOW BLACK RED BROWN GREY BROWN GRETTER AUTO XFMR S+ S B A + T+ T W W D+ D NO C NC Damper Voltage 24V 120V RED Damper Voltage Jumper Settings 24V 120V LEGEND: Low voltage factory wiring Line voltage factory wiring. NOTES: 1. Use specified CSA/UL certified glass fuse: MUST be 3A with I²T>20. Speed Jumper Settings JP3 75V JP5 120V

* Wiring diagram of complete unit inside of access panel

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

graph TD
    A["THERMOSTAT TERMINALS"] --> B["Four Wire"]
    A --> C["TWO WIRE heating only"]
    A --> D["FURNACE 24-VOLT TERMINAL BLOCK"]
    A --> E["INTERLOCK"]
    E --> F["N.O."]
    E --> G["COM"]
    E --> H["N.C."]
    I["COOLING SYSTEM"] --> J["TWO WIRE"]
    J --> K["FURNACE 24-VOLT TERMINAL BLOCK"]

Alternative Accessory Control Contact

graph TD
    A["THERMOSTAT TERMINALS"] --> B["FOUR WIRE"]
    A --> C["TWO WIRE HEATING ONLY"]
    A --> D["WIRE JOINT"]
    D --> E["INTERLOCK"]
    D --> F["FURNACE 24-VOLT TERMINAL BLOCK"]
    D --> G["TWO WIRE"]
    G --> H["COOLING SYSTEM"]
    style A fill:#f9f,stroke:#333
    style H fill:#ccf,stroke:#333

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.

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.
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.
	HRV out of balance Have contractor balance HRV 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 use of continuous exchange mode.
	HRV out of balance Have contractor balance HRV
	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 filter
	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 airflow	Check duct installation
	Improper speed control setting	Increase the speed of the HRV (i.e. change unit control from REDUCED to NORMAL speed)
	HRV airflow improperly balanced	Have contractor balance HRV airflows
	Ducting has fallen down or been disconnected from HRV	Have 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, 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 HRV supply speed. A small duct heater (1kw) could be used to temper the supply airPlacement 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
HRV and/or Ducts frosting up	HRV air flows are improperly balanced	Have HVAC contractor balance the HRV airflows
	Malfunction of the HRV 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 coveringEnsure that the vapor barrier is completely sealed.

Note: It is best to get the unit checked by a certified HVAC Contractor/Technician.

HRV MAINTENANCE CHART

Maintenance Required Recommended Frequency Date Maintenance Performed

Check and Clean Filters Every 3 months or if dirty
Check Heat 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 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.

Contractor Telephone Number Date Serviced

The Best Limited Warranty in the Business

• The heat recovery aluminum core has a limited lifetime warranty.
• The motors found in all Fantech HRV's 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.
• The warranty is limited to 5 years on parts and 7 years on the motor 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.
  * 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.

NOTES

Exterior view of a beige industrial device with black circular components and a 'fantech' logo on the side (no other text or symbols visible)

* ASHRAE 62.2-2010 Table 4.1, Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings.

Illustration of a robotic hand holding a circular device with a cross symbol (no text or labels)

Close-up of a camera lens with visible focal lines and screen (no text or symbols)

White wall-mounted air vent with a coiled spring, mounted on a wooden shelf (no text or symbols visible)

Close-up of a hand holding a white plastic tool near a white rectangular panel (no text or symbols visible)

Technical line drawing of a mechanical assembly with cylindrical component and three circular components (no text or symbols)

INSTALLATION DES CONDUITS SUR LE VRC

EMPLACEMENT DES GRILLES D'APPROVISIONNEMENT

Isometric line drawing of a house interior with visible structural elements and airflow indicators (no text or labels)

Isometric line drawing of a house interior with ventilation system and directional arrows indicating airflow or movement (no text or symbols)

INSTALLATION

Hand holding a small object against a wooden structure (no text or symbols visible)

Hand operating a mechanical device with chains and a lever (no visible text or symbols)

Simple line drawing of a spring attached to a vertical rod (no text or symbols)

Black and white photo of a hand holding a blank whiteboard with 'fantech' logo (no other text or symbols visible)

Pure technical diagram of a mechanical assembly with no text, numbers, or symbols

Hand holding a vertical rod with a circular ring, no visible text or symbols

ÉQUILIBRAGE DU DÉBIT D'AIR

SI LES FLUX D'AIR DE L'APPAREIL NE SONT PAS CORRECTEMENT ÉQUILIBRÉS...

• L'EFFICACITÉ DE L'APPAREIL PEUT ÊTRE RÉDUITE.
• DES DOMMAGES AU NOYAU DE RÉTABLISSEMENT DE LA CHALEUR PEUVENT SURVENIR.
- UN REFOULEMENT DE L'AIR DANS VOS APPAREILS DE CHAUFFAGE À COMBUSTION
• LE DÉGIVRAGE DE L'APPAREIL PEUT NE PAS FONCTIONNER.

Close-up of a hand holding a small electronic component with multiple pins (no visible text or symbols)

Technical diagram of a mechanical device with numbered components and exploded views, likely for assembly or manufacturing purposes.

BOM # Description		VHR150(44921)
1 R2E 190 Radical, Rep. Kit 405520
2 Electrostatic Filters Kit 8.5" x 15" 402041
3 Heat Recovery Cell 9" x 9" x 15" 402063
4 Capacitors 8uF 410012
5 Kit,PCB Replacement,Board,AC* 422677
6 Door Switch 410867
7 Auto-Transformer 411963
8 Control Switch 410213
9 Kit Drain Plug 40315
10	Collar 6", Oval, w/Stop	413893
11	Collar 6", Oval, wo/Stop	413894
12	Damper Door, VHR150R	420462
Temperature Probe 40286
	Door Assembly	405532

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