About This Manual
This manual uses the following symbols to emphasize particular information:
Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death.
Identifies an instruction which, if not followed, may severely damage the unit and/or its components.
Indicates supplementary information needed to fully complete an instruction.
About These Units
Limitation
For residential (domestic) installation only. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards.
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE THE FOLLOWING:
- Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty.
- Before servicing or cleaning the unit, disconnect power cord from electrical outlet.
- This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.
- When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
- Do not use this unit with any solid-state speed control device other than following controls:
| UNIT | MAIN CONTROL | AUXILIARY CONTROLS |
|---|---|---|
| ERV100SP | VT8W, VT7W, VT4W OR VT6W | VB60W AND 59W |
| ERV100S | VT7W, VT4W OR VT6W | VB20W AND 59W |
- This unit must be grounded. The power supply cord has a 3-prong grounding plug for your safety. It must be plugged into a mating 3-prong grounding receptacle, grounded in accordance with the national electrical code and local codes and ordinances. Do not remove the ground prong. Do not use an extension cord.
- Do not install in a cooking area or connect directly to any appliances.
- Do not use to exhaust hazardous or explosive materials and vapors.
- When performing installation, servicing or cleaning these units, it is recommended to wear safety glasses and gloves.
- When applicable local regulation comprise more restrictive installation and/or certification requirements, the aforementioned requirements prevail on those of this document and the installer agrees to conform to these at his own expenses.
- To avoid premature clogged filters, turn OFF the unit during construction or renovation.
- Please read specification label on product for further information and requirements.
- Be sure to duct air outdoor - Do not intake/exhaust air into spaces within walls or ceiling or into attics, crawl spaces, or garage.
- Intended for residential installation only in accordance with the requirements of NFPA 90B.
- Do not run any air ducts directly above or closer than 2 ft to any furnace or its supply plenum, boiler, or other heat producing appliance. If a duct has to be connected to the furnace return plenum, it must be connected not closer than 9' 10" from this plenum connection to the furnace.
- The ductwork is intended to be installed in compliance with all local and national codes that are applicable.
- When leaving the house for a long period of time (more than two weeks), a responsible person should regularly check if the unit operates adequately.
- If the ductwork passes through an unconditioned space (e.g.: attic), the unit must operate continuously except when performing maintenance and/or repair. Also, the ambient temperature of the house should never drop below 65°F.
1. Typical Installations
Use the following illustrations as guidelines to help decide how the unit will be installed. All units should be hung from joists or ceiling using brackets (included with the unit). An optional chains and spring kit (part no. V61239, sold separately) can be used instead of brackets. If required, bathroom fans and a range hood can be used to exhaust stale air. For homes with more than one level, one exhaust register at the highest level is recommended. There are 3 installation methods: Fully ducted, Central Draw Point and Simplified Installation.
A standard 3-prong electrical outlet has to be available within 3 feet of the unit.
1.1 For House
1.1.1 Fully Ducted System (Primarily for homes with radiant hot water or electric baseboard heating)
In a fully ducted system for houses, stale air from registers at the highest level of the house is exhausted outdoors. Fresh air from outdoors is filtered and supplied by registers at the lowest liveable level. Homes with more than one level require at least one exhaust register at the highest level. This setup ensures comprehensive air circulation throughout the residence.
1.1.2 Central Draw Point (Connection to a forced air system)
For central draw point installations in houses, stale air from registers at the highest level is exhausted outdoors. Fresh air from outdoors is filtered and supplied to the return (plenum) or supply duct of the forced air unit. While not essential, it is recommended that the forced air system blower runs when the unit is in operation for optimal performance.
Homes with multiple forced air systems should have one unit on each system.
1.1.3 Simplified Installation (Connection to a forced air system)
In a simplified installation for houses, stale air is exhausted outdoors. Fresh air from outdoors is filtered and supplied to the return (plenum) or the supply duct of the forced air unit. To avoid cross-contamination and achieve the highest efficiencies, the forced air system blower must always be ON.
Homes with multiple forced air systems should have one unit on each system.
1.2 For High-Rise Dwelling
1.2.1 Fully Ducted System (Primarily for homes with radiant hot water or electric baseboard heating)
For high-rise dwellings with a fully ducted system, stale air from registers in bathrooms and the kitchen is exhausted outdoors. Fresh air from outdoors is filtered and supplied by registers in bedrooms and the living room, ensuring fresh air distribution throughout the living spaces.
1.2.2 Central Draw Point (Connection to a fan-coil system)
In high-rise dwellings using a central draw point connection to a fan-coil system, stale air from registers in bathrooms and the kitchen is exhausted outdoors. Fresh air from outdoors is filtered and supplied to the supply duct of the fan-coil system unit. While not essential, it is recommended that the fan-coil system blower runs when the unit is in operation for optimal performance.
2. Installation
2.1 Inspect the Contents of the Box
- Inspect the exterior of the unit for shipping damage. Ensure that there is no damage to the door, door hinges, power cord, etc.
- Open the unit door and inspect the interior of the unit for damage. Ensure that energy recovery core, core filters, insulation, dampers, etc. are all intact.
2.2 Unit Preparation
All units are equipped with 2 ports having integrated balancing dampers (Fresh air to building and Exhaust air to outdoors ports). Before installing the unit, check if these 2 ports are in wide open position. If not, proceed as follows:
- Loosen the damper lever locking screw.
- Use the damper lever to open the damper.
- Lock the damper in position by tightening the locking screw.
When loosening or tightening the damper lever locking screw, never use an electric screwdriver or drill, use a standard screwdriver.
2.3 Locating the Unit
Choose an appropriate location for the unit:
- Within an area of the house where the ambient temperature is kept between 65°F and 104°F.
- So as to provide easy access to the interior of the unit, for quarterly and annual maintenance.
- Close to an exterior wall, so as to limit the length of the insulated flexible duct to and from the unit.
- Away from hot chimneys and other fire hazards.
- Allow for a power source within 3 feet (standard 3-prong grounding outlet).
2.4 How to Hang the Unit
Never handle the unit using its ports; hold the unit by its sides.
Hang the unit using 2 included brackets. To mount brackets to ceiling or joists, use the template printed on the cardboard filler located in the unit box. Align bracket notches with cardboard filler tabs. Use at least 2 end screws (A) (or nails) per bracket to secure them to the joists or ceiling; the center one is optional.
To ensure occupants safety, ensure the brackets are mounted to solid surface (e.g.: concrete ceiling, joists).
The included screws are for wood joist only; do not use them to secure brackets to concrete ceiling or metal joists.
To hang the unit: Bend 90° integrated hooks (2 places) on the unit. Hang these hooks onto the mounted brackets. Clip the other side of the unit onto the brackets (2 places).
Ensure the unit is completely held by the brackets before continuing the installation.
The unit can also be hung using 4 hooks (shaded part in illustration), chains, springs and screws (kit sold separately, part no. V61239).
Make sure the unit is level.
2.5 Planning of the Ductwork
- Keep it simple. Plan for a minimum of bends and joints.
- Keep the length of insulated ducts to a minimum.
- Do not ventilate crawl spaces or cold rooms. Do not attempt to recover the exhaust air from a dryer or a range hood. This would cause clogging of the filters and recovery module.
- If the house has two floors or more, be sure to plan for at least one exhaust register on the highest lived-in level.
2.6 Installing the Ductwork and Registers
Never install a stale air exhaust register in a closed room where a combustion device operates, such as a gas furnace, a gas water heater or a fireplace.
2.6.1 Fully Ducted System (As illustrated in sections 1.1.1 and 1.2.1)
Stale air exhaust ductwork:
- Install the stale air exhaust registers where contaminants are produced: kitchen, living room, etc. Position the registers as far from the stairway as possible and in such a way that the air circulates in all the lived-in spaces in the house.
- If a register is installed in the kitchen, it must be located at least 4 feet from the range.
- Install the registers 6 to 12 inches from the ceiling on an interior wall OR install them in the ceiling.
Fresh air distribution ductwork:
- Install the fresh air distribution registers in bedrooms, dining rooms, living room and basement.
- Keep in mind that the fresh air registers must be located as far as possible from the stale air registers.
- Install the registers in the ceiling OR 6 to 12 inches from the ceiling on an interior wall.
- If a register must be floor installed, direct the airflow up the wall.
2.6.2 Central Draw Point System (As illustrated in sections 1.1.2 and 1.2.2)
Stale air exhaust ductwork: Same as for Fully Ducted System, described on point 2.6.1
Fresh air distribution ductwork:
When performing duct connections, always use approved tools and materials. Respect all corresponding laws and safety regulations. Please refer to your local building code.
When performing duct connections to the furnace supply duct, this duct must be sized to support the additional airflow produced by the ERV. Also, use a steel duct.
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply side connection (All units)
- Cut an opening into the furnace supply duct at least 18 inches from the furnace/air handler.
- Connect this opening to the Fresh air to building port of the ERV (use steel duct). The ERV duct should form an elbow inside the furnace/air handler ductwork.
- If desired, interlock (synchronize) the furnace/air handler blower operation (see Section 4).
Method 2: Return side connection (exclusively for ERV100SP unit only)
- Cut an opening into the furnace return duct not less than 10 feet from the furnace/air handler (A+B).
- Connect this opening to the Fresh air to building port of the ERV.
For Method 2, it is not essential that the furnace/air handler runs when the unit is in operation, but it is recommended. If desired, interlock (synchronize) the furnace/air handler blower operation (see Section 4).
2.6.3 Simplified Installation (As illustrated in section 1.1.3)
When performing duct connections, always use approved tools and materials. Respect all corresponding laws and safety regulations. Please refer to your local building code.
When performing duct connections to the furnace supply duct, this duct must be sized to support the additional airflow produced by the ERV. Also, use a steel duct. For a Return-Return installation, the furnace blower must be in operation when the ERV is in operation.
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply-return connection (All units)
Method 2: Return-return (exclusively for ERV100SP unit)
Stale air intake:
- Cut an opening into the furnace/air handler return duct not less than 10 feet from the furnace/air handler (A+B).
- Connect this opening to the Exhaust air from building port of the ERV.
Fresh air distribution:
- Same instructions as for Method 1 or Method 2, Section 2.6.2.
For Method 2 (Return-return), make sure there is a distance of at least 3 feet between the 2 connections to the furnace/air handler.
For Method 1, it is not essential to synchronize the furnace blower operation with the unit operation, but it is recommended.
If using Method 2, make sure the furnace/air handler blower operation is synchronized with the unit operation! See Section 4.
2.7 Connecting the Ducts to the Unit
All units ports were created to be connected to ducts having a minimum of 5" diameter, but if need be, they can be connected to bigger sized ducts by using an appropriate transition (e.g.: 5" diameter to 6" diameter transition).
Insulated flexible ducts:
Make sure the balancing dampers are set to wide open position before connecting the ducts to the ports. Also, the ductwork connecting Fresh air to building and Exhaust air to outdoors ports with exterior hood(s) must be made of insulated ducts, all way long.
All units have both Fresh air to building and Exhaust air to outdoors ports equipped with integrated balancing damper. Prior to install the insulated flexible ducts on, ensure these both ports have their dampers set to wide open position (See Section 2.2)
If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts.
Use the following procedure for connecting the insulated flexible ducts to the port of the unit (Exhaust air to outdoors and Fresh air from outdoors ports).
- Pull back the insulation to expose the flexible duct.
- Attach the flexible duct to the port using tie wrap.
- Pull the insulation over the joint and tuck in between the inner and outer rings of the double collar, then pull down the vapor barrier over the insulation and tuck in between the inner and outer rings.
- Apply duct tape to the joint (outer ring and vapor barrier) making an airtight seal. Avoid compressing the insulation when pulling the tape tightly around the joint. Compressed insulation loses its R value and causes water dripping due to condensation on the exterior surface of the duct.
Make sure the vapor barrier on the insulated ducts does not tear during installation to avoid condensation within the ducts.
Rigid ducts:
Do not use screws to connect the rigid ducts to the ports.
Use a small length (6" length) of flexible duct to connect the rigid duct to the ports in order to avoid vibration transmissions. Use tie-wraps to perform connections, then seal with duct tape.
2.8 Installing 2 Exterior Hoods
Choose an appropriate location to install the exterior hoods:
- There must be a minimum distance of 6' between the hoods to avoid cross-contamination.
- There must be a minimum distance of 18" from the ground.
Make sure the intake hood is at least 6 feet away from any of the following:
- Dryer exhaust, high efficiency furnace vent, central vacuum vent
- Gas meter exhaust, gas barbecue-grill
- Any exhaust from a combustion source
- Garbage bin and any other source of contamination
Refer to the installation guidelines for connecting insulated ducts to the exterior hoods. An "Anti-gust intake hood" should be installed in regions where a lot of snow is expected to fall. The exhaust hood and intake hood should be positioned with a minimum 6-foot horizontal separation and 18-inch vertical separation from the ground. An optional duct location is also shown, maintaining 6-foot separation from the main unit and 18-inch from the ground. Connections involve tape and duct ties for secure sealing.
2.9 Installing Tandem® Transition Kit
If desired, a Tandem transition kit (part no. VTYIK1) can be used instead of 2 exterior hoods. The joist opening needed to install the Tandem® transition must be 9¾" minimum. The maximum height of the Tandem transition is 8". To connect the insulated flexible ducts to the Tandem transition (Exhaust air to outdoors and Fresh air from outdoors), follow the instructions included with the Tandem transition kit. This kit is patented.
3. Controls
The ERV100SP unit is equipped with an integrated defrost control while the ERV100S unit has an integrated control. In both cases, these electronic devices are located under the unit, in front of the electrical compartment. The integrated control features an LED (1) and a push button (2) for operation and status indication. Plug in the unit to begin.
3.1 Booting Sequence
The unit booting sequence is similar to a personal computer boot sequence. Each time the unit is plugged after being unplugged, or after a power failure, the unit will perform a booting sequence before starting to operate.
| 3.1.1 ERV100SP Unit Booting Sequence | 3.1.2 ERV100S Unit Booting Sequence |
|---|---|
| During the booting sequence, the integrated defrost control LED (1) will be OFF for 3 seconds, and then will turn RED for the rest of the booting sequence (approximately 15 seconds). During this RED light phase, the unit is checking and resetting the motorized damper position. Once the motorized damper position completely set, the booting sequence is done; the color of the LED will show on which defrost cycle the unit is set. | During the booting sequence, the integrated control LED (1) will light up and remain GREEN or AMBER for 3 seconds, and will then shut off*; the booting sequence is done. * or will light up in the color of the previous mode to show the unit resumed to it, if the unit is controlled by its integrated control. |
NOTE: No command will be taken until the unit is fully booted. | |
If a problem occurs during the unit operation, or if the unit turns in Protection Mode, its LED (1) will blink. The color and the blinking pattern depend on the type of error detected, or if the unit is in Protection Mode. Refer to the sticker on the unit and Section 9 Troubleshooting on page 22 for further details.
3.2 ERV100SP Unit Integrated Defrost Control
After the booting sequence is done, the LED (1) will light and stay lit to show in which defrost cycle the unit is set. Use the push button (2) to change the defrost cycle of the unit.
| LED COLOR | DEFROST CYCLE |
|---|---|
| GREEN | STANDARD |
| RED | PLUS |
| AMBER | DISCRETION |
There is a 15-minute delay for the new defrost cycle choice to be kept in memory; if a power failure occurs during this time delay, when the power returns, the unit resume to its previous setting.
According to your needs, there are 3 defrost cycles available:
- STANDARD: This is the factory set defrost cycle. Being the most energy recovery efficient defrost cycle available on this unit, STANDARD is used to achieve HVI and ENERGY STAR® listed performance. When needed, the unit will perform defrost cycle on high speed.
- PLUS: This mode has been created for people who live in cold region (outdoor temperature -17°F and lower). This setting makes the unit perform defrost cycle on high speed for a longer period of time.
- DISCRETION: When needed, the defrost cycle will be performed on the same speed than the unit ventilation speed. This means that if the unit is set on high speed, the defrost cycle will be done on high speed, but if the unit is set on low speed, the defrost cycle will be done on low speed.
3.3 ERV100S Unit Integrated Control
Use the push button (2) to control the unit. The LED (1) will then shows on which mode the unit is in.
| LED COLOR | RESULTS |
|---|---|
| AMBER | UNIT IS ON LOW SPEED |
| GREEN | UNIT IS ON HIGH SPEED |
| NO LIGHT | UNIT IS OFF OR CONTROLLED BY A MAIN CONTROL |
When using main control, the integrated control must be turned off.
3.4 Setting Extended Defrost for ERV100S Unit
These units are factory set to normal defrost. In cold regions (outdoor temperature -17°F and lower), it may be necessary to setup extended defrost. During the first 3 seconds of booting sequence, the integrated control LED shows the current defrost mode.
| LED COLOR | DEFROST MODE |
|---|---|
| GREEN | NORMAL |
| AMBER | EXTENDED |
Within the first 3 seconds of booting sequence, press on push button until the LED starts to blink, then release the push button; the LED will blink AMBER 5 times. After that, the LED will shut off, then turn RED (the unit returns in its booting sequence).
3.5 Electrical Connection to Wall Controls
The ERV100SP unit must be controlled by a main control. For more convenience, the ERV100S unit can also be controlled using an optional main control.
- The integrated control must be turned OFF on ERV100S unit to use an optional main control.
- If an optional auxiliary control is used, if activated, this auxiliary control will override the optional main control operation.
Always disconnect the unit before making any connections. Failure in disconnecting power could result in electric shock or damage of the wall control or electronic module inside the unit.
Never install more than one main wall control per unit. Make sure that the wires do not short-circuit between themselves or by touching any other components on the wall control. Avoid poor wiring connections. To reduce electrical interference (noise) potential, do not run wall control wiring next to control contactors or near light dimming circuits, electrical motors, dwelling/building power or lighting wiring, or power distribution panel.
Open the unit door. Insert the terminal connector (included in the installation kit) under the unit, on the electrical compartment front face. Use this terminal connector to perform the electrical connection for main and optional wall controls, then secure the cable(s) with a tie wrap. To ensure proper connection, check if all wires are correctly inserted in their corresponding holes in the terminal block (a wire is correctly inserted when its orange receptacle is lower than another one without wire). Splice back the end of the cable to access the 4 wires. Strip the end of each wire. Connect each wire to its corresponding terminal: YELLOW wire to "Y", RED wire to "R", GREEN wire to "G" and BLACK wire to "B". Connect the auxiliary control cable, if installed.
3.5.1 Electrical Connection to VT8W Main Wall Control (ERV100SP unit only)
Connect the VT8W main wall control to the unit's terminal block. The connections are typically: NO, C, NC, I, OC, OL, Y, R, G, B. Ensure correct wire color matching for proper functionality.
3.5.2 Electrical Connection to VT7W Main Wall Control (All units)
Connect the VT7W main wall control to the unit's terminal block. The connections are typically: NO, C, NC, I, OC, OL, Y, R, G, B. Ensure correct wire color matching for proper functionality.
3.5.3 Electrical Connection to VT4W Main Wall Control (All units)
Connect the VT4W main wall control to the unit's terminal block. The connections are typically: NO, C, NC, I, OC, OL, Y, R, G, B. The rear view of the VT4W main wall control shows terminals for G and B connections.
3.5.4 Electrical Connection to VT6W Main Wall Control (All units)
Connect the VT6W main wall control to the unit's terminal block. The connections are typically: NO, C, NC, I, OC, OL, Y, R, G, B. Ensure correct wire color matching for proper functionality.
3.5.5 Electrical Connection to Optional Auxiliary Wall Controls (59W: All units, VB60W: ERV100SP unit only and VB20W: ERV100S unit only)
Connect optional auxiliary wall controls (59W, VB60W, VB20W) to the unit's terminal block. The connections are typically: NO, C, NC, I, OC, OL, Y, R, G, B. If an optional auxiliary wall control is activated, this control will override the main wall control commands.
Once the wall control(s) connections have been made and checked, close the unit door.
For information about the operation of the wall controls, refer to the Main and auxiliary wall controls user guide.
4. Electrical Connection to the Furnace
Never connect a 120-volt AC circuit to the terminals of the furnace interlock (standard wiring). Only use the low voltage class 2 circuit of the furnace blower control.
For a furnace connected to a cooling system: On some older thermostats, energizing the “R” and “G” terminals at the furnace has the effect of energizing "Y" at the thermostat and thereby turning on the cooling system. If this type of thermostat is identified, the ALTERNATE FURNACE INTERLOCK WIRING must be used.
Standard Furnace Interlock Wiring: This setup typically involves a 24-volt furnace terminal block with connections for four wires (W, R, G, Y) or two wires (heating only). The unit terminal connector connects to NO, C, OC, OL, Y, R, G, B. For cooling systems, two wires connect to the cooling system. This configuration ensures the ERV operates in conjunction with the furnace blower.
Alternate Furnace Interlock Wiring: This setup is used when the standard wiring might inadvertently activate the cooling system. It involves a 24-volt furnace terminal block with connections for four wires (W, R, G, Y) or two wires (heating only). The unit terminal connector connects to NO, C, NC, I, OC, OL, Y, R, G, B. Wiring nuts are used for connections, with specific terminals for NO and NC. This alternative ensures proper interlock without unintended cooling activation.
5. Speed Selection
The factory set high speed value for these units is 100 CFM, and low speed value is approximately 50 CFM. To change these values, the transformer wire taps connections must be changed according to the table below.
| Speed | Connection | JU1 Jumper | |
|---|---|---|---|
| 100 CFM | BL-BL | H (1-2) | |
| High Speed | 85 CFM | BN-BL | M (2-3) |
| 65 CFM | GY-R | ||
| Low Speed | 50 CFM | R-R |
The internal wiring diagram for speed selection shows the transformer (T1) with various voltage taps (120V, 103V, 76V, 64V, 55V, 9.5V) and connections to the electronic assembly (A1). The JU1 jumper position (1-2 for H, 2-3 for M) and specific wire connections (BL-BL, BN-BL, GY-R, R-R) determine the CFM output for high and low speeds. Key connections include J5, J7, J8, J9, J10, J11, J12, J13, J14, J20, and J24. The color code for wires is also provided: BK (BLACK), BL (BLUE), BN (BROWN), G (GREEN), GY (GREY), O (ORANGE), R (RED), W (WHITE), Y (YELLOW), NC (NO CONNECTION).
6. Wiring Diagram
- Risk of electric shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
- This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation. If the fuse blows, unplug the product from the outlet. Discontinue using the unit and contact technical support.
The wiring diagram provides a detailed electrical schematic for the Broan ERV100S and ERV100SP units. It includes both a wiring diagram and a logic diagram, illustrating connections for the main power line (120 VAC), neutral, exhaust fan motor (M1), supply fan motor (M2), motor capacitors (C1, C2), door interlock switch (S1), thermistors (R1, R2), transformer (T1), and various connectors (J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J20, J24). It also shows the electronic assembly (A1, A2) and connections for wall controls and furnace interlock. The diagram is crucial for qualified personnel to understand the electrical flow, troubleshoot issues, and perform maintenance safely. It highlights critical characteristics and notes regarding wiring compliance with codes and standards, remote controls, and furnace fan circuits.
7. Balancing the Unit
7.1 What You Need to Balance the Unit
- A magnehelic gauge capable of measuring 0 to 0.5 inch of water (0 to 125 Pa) and 2 plastic tubes.
- The balancing chart located on the unit door.
7.2 Preliminary Stages to Balance the Unit
- Seal all the unit ductwork with tape. Close all windows and doors.
- Turn off all exhaust devices such as range hood, dryer and bathroom fans.
- Make sure the integrated balancing dampers are fully open. Both are located on the Exhaust air to outdoor port and on Fresh air from outdoor port (see step 2.2).
- Make sure all filters are clean (if it is not the first time you balance the unit).
Make sure the unit is not running in defrost mode while balancing. When the outdoor temperature is below 32°F, the defrost mode can be activated. During defrost cycle, it is not possible to balance the unit since there is no flow in one direction. To cancel the defrost cycle, use the auxiliary control or jump OC-OL on unit terminal block; this will set the unit on high speed ventilation without defrost for the next 20 minutes. Once the 20 minutes of high speed ventilation is completed, the unit will perform an extended defrost. If installed, do not forget to remove the jumper between OL and OC on terminal block. Another way to avoid the defrost cycle is to wait 10 minutes after plugging the unit in; this procedure ensures that the unit is not in a defrost cycle.
Both units start in defrost mode within the first minute of operation.
7.3 Balancing Procedure
- Set the unit to high speed. Make sure that the furnace/air handler blower is ON if the installation is in any way connected to the ductwork of the cold air return. If not, leave furnace/air handler blower OFF.
- Place the magnehelic gauge on a level surface and adjust it to zero.
- Connect tubing from gauge to exhaust air flow pressure taps and fresh airflow pressure taps. Be sure to connect the tubes to their appropriate high/low fittings. If the gauge drops below zero, reverse the tubing connections.
- Measure both flows; adjust higher flow to equal the lower one, using balancing damper lever. The diagram illustrates airflow paths: Fresh Airflow (HIGH/LOW) and Exhaust Airflow (HIGH/LOW), with pressure taps for measurement.
When loosening or tightening the damper lever locking screw, never use an electric screwdriver or drill, use a standard screwdriver.
Make sure to turn the damper lever to the right direction (opposite to its stopper). Securing the lever in wrong position may cause freezing into the unit.
- Secure both damper levers in place using their locking screw, then shut all the pressure taps with the small plastic plugs included in the hardware kit.
- Write the required air flow information on a label and stick it near the unit for future reference (date, maximum speed air flows, your name, phone number and business address).
The unit is considered balanced even if there is a difference of ±10 cfm between the two air flows.
8. Service Parts
The exploded view diagram illustrates the various components of the Broan ERV unit, corresponding to the parts listed in the table below. This visual aid helps in identifying and locating specific service parts for maintenance and repair.
| No. | DESCRIPTION | PART NO. | ERV100S | ERV100SP |
|---|---|---|---|---|
| 1 | INSTALLATION BRACKETS KIT (2) | SV61240 | 1 | 1 |
| 2 | RECIRCULATION CHANNEL KIT | SV61213 | 1 | |
| 3 | DAMPER SYSTEM KIT | SV61214 | 1 | |
| 4 | BALANCING PORT KIT | SV61216 | 1 | |
| 5 | BALANCING AND BACKDRAFT DAMPER PORT KIT | SV61219 | 1 | |
| 6 | 5" METAL PORT KIT FOR COLD SIDE | SV61236 | 2 | 2 |
| 7 | ADJUSTABLE PORT KIT | SV61215 | 1 | 1 |
| 8 | DOOR METAL KEEPERS AND LATCHES KIT | SV61218 | 1 | 1 |
| 9 | COLD SIDE BLOWER KIT (INCL. 1 CAPACITOR) | SV61235 | 1 | 1 |
| 10 | WARM SIDE BLOWER KIT (INCL.1 CAPACITOR) | SV61234B | 1 | 1 |
| 11 | WARM SIDE THERMISTOR | SV61233 | 1 | 1 |
| 12 | TRANSFORMER KIT | SV61232 | 1 | 1 |
| 13 | CAPACITORS 5 µF (2) | SV16042 | 1 | 1 |
| 14 | ELECTRONIC BOARD KIT | SV61229 | 1 | |
| SV61230 | 1 | |||
| 15 | MAGNET WITH BRACKET KIT | SV61241 | 1 | 1 |
| 16 | DOOR ASSEMBLY | SV63498 | 1 | 1 |
| 17 | FILTER KIT (2) | SV21029 | 1 | 1 |
| OPTIONAL MERV 8 FILTERS (2) | V21030 | 1 | 1 | |
| 18 | ERV CORE | SV61223 | 1 | 1 |
| 19 | CORE LOCKING DEVICE KIT | SV61237 | 1 | 1 |
| 20 | 5" METAL PORT KIT FOR WARM SIDE | SV61217 | 2 | 2 |
| 21 | DOOR METAL HINGES KIT (2) | SV61228 | 2 | 2 |
| * | TERMINAL CONNECTOR | SV16416 | 1 | 1 |
| * | COLD SIDE THERMISTOR KIT | SV61221 | 1 | |
| * | OPTIONAL HARDWARE KIT | V61239 | 1 | 1 |
* NOT SHOWN.
REPLACEMENT PARTS AND REPAIR In order to ensure your ventilation unit remains in good working condition, Broan-NuTone LLC genuine replacement parts only must be used. These parts are specially designed for each unit and are manufactured to comply with all applicable certification standards and maintain a high standard of safety. Any third party replacement part used may cause serious damage and drastically reduce the performance level of your unit, which will result in premature failing. Broan-NuTone LLC recommends contacting a Broan-NuTone LLC certified service depot for all replacement parts and repairs.
9. Troubleshooting
If the unit does not work properly, reset the unit by unplugging it for one minute and then replugging it. If it still not working properly, refer to table below.
If the LED of the unit is flashing, this means the unit sensors have detected a problem. Refer to the table below to know where the problem occurs on the unit.
| LED SIGNAL | ERROR TYPE | ACTION | UNIT STATUS |
|---|---|---|---|
| LED flashes GREEN (double blink every 2 seconds). | Outdoor thermistor error. |
| Unit works but will defrost frequently. |
| LED flashes GREEN (2 blinks per second; faster blink). | Building side thermistor error. |
| Unit does not work. |
| LED flashes AMBER (ERV100SP unit only). | Damper system error. |
| Unit does not work. |
| LED flashes RED (one blink every 2 seconds). | Cold side motor error, open door or magnetic switch bad contact. | For ERV100SP unit:
| Unit does not work. |
| LED flashes RED (2 blinks per second; faster blink). | Unit is on protection mode or is in error because it has been in protection mode for an abnormal time. |
| Unit exhaust air without entering fresh air for a 2-hour period, then resume to its previous operation mode and stops flashing RED. If LED continues to flash RED when back to previous mode, the unit is in error. Go to point 9 in next table. |
Troubleshooting Table (Continued)
Risk of electric shocks. Electronic board connections must be checked by qualified personnel only.
| PROBLEMS | POSSIBLE CAUSES | YOU SHOULD TRY THIS | |
|---|---|---|---|
| 1 | The error code E1 is displayed on VT8W or VT7W wall control screen. |
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| 2 | There is no outdoor temperature displayed on VT8W wall control screen --. |
| NOTE: At its very start-up or after a power failure, it takes some minutes before the outdoor temperature appears on screen. The shortest delay is obtained when the wall control is set on MIN or MAX in VENT Mode.
|
| 3 | VT8W or VT7W wall control screen alternates between normal display and E3. |
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| 4 | The main wall control does not work. | ERV100S unit only:
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| 5 | Unit does not work (LED not lit on power up). |
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| 6 | The auxiliary control does not work. |
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| 7 | The damper system does not work (ERV100SP unit only) (AMBER error code). | At power up, no RED LED. At power up, LED lights RED and there is a clicking sound coming from electrical compartment, but damper does not move:
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| 8 | A. The supply motor does not work, but exhaust motor works. |
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| B. The LED flashes RED. |
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| 9 | Unit shows protection mode error (different than being in protection mode) |
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