BROAN B230H75RT (01) PDF Document

To reduce the risk of fire, electric shock, or injury to persons, observe the following:

1. Use this unit only in the manner intended by the manufacturer.

2. Before servicing or cleaning this unit, disconnect the power cord from the electrical outlet.

3. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.

4. When cutting or drilling into a wall or ceiling, do not damage electrical wiring and other hidden utilities.

5. Do not use this unit with any solid-state speed control device other than those specified in section 3.1.

6. This unit must be grounded. The power supply cord has a 3-prong grounding plug for your personal 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.

7. Do not install in a cooking area or connect directly to any appliances.

8. Do not use to exhaust hazardous or explosive materials and vapors.

9. When performing installation, servicing or cleaning this unit, it is recommended to wear safety glasses and gloves.

10. When applicable local regulation comprises 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 expense.

1. To avoid prematurely clogged filters, turn the unit OFF during construction or renovation.

2. Please read the specification label on the product for further information and requirements.

3. Be sure to duct air outside – Do not intake/exhaust air into spaces within walls or ceiling or into attics, crawl spaces, or garage. Do not attempt to recover the exhaust air from a dryer or a range hood.

4. Intended for residential installation only in accordance with the requirements of NFPA 90B (for a unit installed in U.S.A.) or Part 9 of the National Building Code of Canada (for a unit installed in Canada).

5. Do not run any air ducts directly above or within 2 ft. of a 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 10 ft. away from plenum connection to the furnace.

6. The ductwork is intended to be installed in compliance with all applicable local and national codes.

7. 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.

8. 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 (18°C).

9. At least once a year, the unit mechanical and electronic parts should be inspected by qualified service personnel.

10. Do not use your unit during construction or renovation of your house or when sanding drywall. Certain types of dust and vapors may damage your system.

11. Make sure at all times that the outside intake and exhaust hoods are free from any snow during the winter season. It is important to check your unit during a big snow storm, so it doesn’t draw in any snow. If this is the case, please turn the unit OFF for a few hours.

12. Since the electronic control system of the unit uses a microprocessor, it may not operate correctly because of external noise or very short power failure. If this happens, unplug the unit and wait approximately 10 seconds. Then, plug the unit in again.

13. Do not make excessive use of fragrance appliances or chemicals since some may damage the unit components material.

Choose an appropriate location for the unit:

• Within an area of the house where the ambient temperature is kept between 50°F and 149°F.

• Away from living areas (dining room, living room, bedroom), if possible.

• So as to provide easy access to the interior cabinet for maintenance, and to the control panel on the side of the unit.

• Close to an exterior wall, so as to limit the length of the insulated flexible ducts to and from the unit.

• HRV units only: close to a drain. If no drain is close by, use a pail to collect run-off.

• Away from hot chimneys, electrical panel and other fire hazards.

• Within 6 feet of a power source (standard outlet).

You can mount the unit either suspended from joists or directly on a wall.

Suspended to the joists or trusts:

• Slightly bend the brackets on the unit to insert the provided chains.

• Hang the unit to the joists (or trusts) using the chains. Springs are not required.

• Always make sure that the unit is no more than 1/4″ off level.

Wall mounted:

• Choose the appropriate location(s) for the mounting brackets according to stud(s) position.

• Insert the provided brackets under the unit frame.

• Fix the bracket using the screw no. 8 x 3/8″.

• Using the 4 no. 8 x 1½” screws provided, secure the unit to the wall making sure that the 4 screws engage into a stud.

• Always make sure that the unit is no more than 1/4″ off level.

NOTE: Keep 3″ clearance on the electrical box side for cooling and servicing.

• Cut the appropriate length of drain tubing.

• Connect the tubing to the provided adaptor.

• Make a water trap loop in the tube to prevent the unit from drawing unpleasant odors from the drain source. Add water in the loop to prevent noise or hiss.

• Make sure there is a distance of at least 2″ between the unit and the tubing loop.

• Using tie wraps provided, attach the tubing as illustrated.

• Run the tube to the floor drain or to an alternate drain pipe or pail.

• IMPORTANT: If using a pail to collect water, place the tube end approximately 1″ inside the pail in order to prevent water from being drawn back up into the unit.

Use the following procedure to connect the insulated flexible ducts to the ports of the unit (exhaust to outside and fresh air from outside).

1. Expose the flexible duct by pulling back the insulation, and place it over the inner port ring.

2. Attach the flexible duct to the port using a tie wrap.

3. Seal the joint using duct tape.

4. Pull the insulation and vapor barrier over the joint, tuck them between the inner and outer rings of the double collar and fasten them in place using duct tape.

The control panel has three buttons:

• OK button: To confirm a selection.

• + button: To increase a value or scroll up in a selection.

• – button: To decrease a value or scroll down in a selection.

To change the operating mode (e.g., from MIN to MAX), press the OK button. Use the + or – buttons to select the desired mode, then press OK again to confirm.

PREPARATION

Follow these steps to ensure accurate measurements:

• Seal all the ductwork with tape. Close all windows and doors.

• Turn off all exhaust devices such as range hood, dryer and bathroom fans.

• If the installation is in any way connected to a ductwork of a central forced-air system, make sure that the central forced-air system blower is ON. If not, leave central forced-air system blower OFF.

AUTO-BALANCING PROCEDURE

• Plug the unit in and wait for the maximum CFM to display on the LCD screen. If the unit is colder than ambient temperature, it is normal to experience a 60s longer boot-up since motors have to preheat. Refer to section 8.1 if errors E22 or E32 display.

• The maximum CFM will display on the LCD screen. Use (+/-) to adjust the CFM and OK to confirm.

• The minimum CFM will display on the LCD screen. Use (+/-) to adjust the CFM and OK to confirm.

• The house icon that flashes on the LCD screen indicates which side currently limits the airflow (supply or exhaust). If the airflow reached is not sufficient, the installer can improve the installation to increase airflow.

INSTALLATION CONFIGURATION SELECTION

• INS will display on the LCD screen. Choose among T-1, T-2, T-3, T-4 or T-5 following the installation configuration.

• Auto-balancing is completed.

PROCEDURE TO MODIFY MIN CFM SETTING

• Go to MIN using (+/-) then press on the OK button for 4 seconds.

• Use (+/-) to increase/decrease CFM and OK to confirm.

PROCEDURE TO MODIFY MAX CFM SETTING

• Go to MAX using (+/-) then press on the OK button for 4 seconds.

• Use (+/-) to increase/decrease CFM and OK to confirm.

PROCEDURE TO MODIFY OPTIONS SETTING

• Go to CFG OPT using (+/-) then press on the OK button for 4 seconds.

PROCEDURE TO MODIFY INDEPENDENT AIRFLOWS SETTING

• Press simultaneously (+/-) buttons for 4 seconds.

– SUPPLY AIRFLOW VALUE WILL FLASH. Press on + BUTTON OR – BUTTON TO INCREASE/DECREASE VALUE. Press OK BUTTON.

– EXHAUST AIRFLOW VALUE WILL FLASH. Press on + BUTTON OR – BUTTON TO INCREASE/DECREASE VALUE. Press OK BUTTON.

– WHEN MAX DISPLAYS, PRESS ON + BUTTON TO EXIT INDEPENDENT AIRFLOWS SETTING.

If any change is made to the ducting, reset settings to restart the airflow test.

PROCEDURE TO RESET SETTINGS

Press on the OK and (-) buttons simultaneously for 4 seconds. Use (+/-) to select Yes or No and OK to confirm. Then perform the auto-balancing procedure.

1. Disconnect the power cord.

2. Open the door of the unit, which is hinged and held by 2 latches, and set it aside.

3. Clean the inside of the door with a damp cloth.

4. Clean filters:

• Remove filters.

• Vacuum to remove most of the dust.

• Wash with a mixture of warm water and mild soap. You may add bleach if you wish to disinfect (one tablespoon per gallon). Rinse thoroughly. Shake filters to remove excess water and let dry.

5. Remove the core.

6. Clean the condensing tray with a damp cloth.

7. Check the exterior air intake hood to ensure there are no leaves, twigs, ice or snow that could be drawn into the vent. Clean if necessary.

8. Rotate the blower wheels by hand. If one of the wheels does not rotate easily, contact your installer.

9. Reassemble the components. Pay special attention to the filters by making sure that they are engaged in their slots.

10. Close the unit door and reconnect the power supply.

11. Reset filters, if required. If using an optional main wall control, press the INT/AUTO button for 5 seconds to reset the filters. If using the ADVANCED optional main wall control, follow the instructions on the touch screen.

1. Repeat steps 1 to 6 from the quarterly maintenance section.

2. Clean the recovery core:

• HRV MODELS: Remove the core. Let it soak in a mixture of cold or lukewarm water and mild soap (dishwashing liquid). Rinse thoroughly. Shake the core to remove excess water and let it dry.

• ERV MODELS: Remove the dust on the core using a vacuum cleaner and a soft brush attachment. CAUTION: DO NOT SOAK THE ENERGY RECOVERY CORE IN WATER.

3. Clean the blower assemblies. Do not disassemble the blower assemblies.

4. Remove the dust using a vacuum cleaner with a soft brush attachment.

5. Reassemble the components.

6. Reconnect power supply.

If the unit does not work properly, first reset the unit by unplugging it for one minute, then replug it.

If the unit is still not working:

• See if the unit is plugged in.

• See if the unit is receiving power from the house circuit breaker or fuse.

If your unit is noisy, try cleaning the unit as per the maintenance instructions. If the problem is not solved, contact your installer.

• Operate the unit at MAX speed during activities generating excess humidity (family gatherings, extra cooking, etc.).

• Leave curtains half-open to allow air circulation.

• Store all firewood in a closed room with a dehumidifier or in a well-ventilated room, or store the wood outdoors.

• Keep the temperature in your house above 64°F.

• Operate the unit in MIN speed.

• Temporarily switch to INT mode (if available).

• Use a dehumidifier.

• Operate the unit at MIN speed.

• Temporarily switch to INT mode (if available).

• Temporarily use a humidifier.

• Make sure the outdoor hoods are not blocked.

• Operate the unit at MIN speed.

• Install a duct heater (contact your installer).

STEP 1: Unplug the unit, inspect the damper system, remove any undesirable obstacle or dirt (filters and core may have to be removed to access the damper system). Plug the unit in.

STEP 2: If STEP 1 did not fix the problem, open the electrical compartment, check if connector J5 (white) is well inserted, and check for any loose wires.

STEP 3: If STEP 2 did not fix the problem, and the damper is not moving at all, unplug J7 (red) from the electronic assembly, and connect the white damper system connector into J7. If the damper moves (but the system still shows an error), the electronic assembly must be replaced. Otherwise, replace the damper system.

STEP 1: Unplug the unit, inspect the damper system, remove any undesirable obstacle or dirt (filters and core may have to be removed to access the damper system). Plug the unit in.

STEP 2: If STEP 1 did not fix the problem, open the electrical compartment, check if connector J7 (red) is well inserted, and check for any loose wires.

STEP 3: If STEP 2 did not fix the problem, and the damper is not moving at all, unplug J5 (white) from the electronic assembly, and connect the red damper system connector into J5. If the damper moves (but the system still shows an error), the electronic assembly must be replaced. Otherwise, replace the damper system.

STEP 1: Unplug the unit, inspect the damper system, remove any undesirable obstacle or dirt (filters and core may have to be removed to access the damper system). Plug the unit in.

STEP 2: If STEP 1 did not fix the problem, open the electrical compartment, check if connector J6 (blue) is well inserted, and check for any loose wires.

STEP 3: If STEP 2 did not fix the problem, and the damper is not moving at all, unplug J5 (white) from the electronic assembly, and connect the blue damper system connector into J5. If the damper moves (but the system still shows an error), the electronic assembly must be replaced. Otherwise, replace the damper system.

STEP 1: Unplug the unit. Perform a visual inspection of the supply damper system. Clean filters, distribution registers and outside supply hood. Inspect ducting to ensure it is not squeezed or bent. Plug the unit in.

STEP 2: If STEP 1 did not fix the problem, remove ducting of the supply path. On the LCD screen, select MAX to check if the unit is able to reach the selected flow. If so, review the ducting path.

STEP 3: If STEP 2 did not fix the problem, on the LCD screen, select the MIN and MAX flow setting values then reset the unit. MAX flow value will display on the LCD screen. If MAX flow is above desired MAX flow, set MAX and MIN flows.

STEP 4: If STEP 3 did not fix the problem, replace the supply blower and repeat STEP 3.

STEP 5: If STEP 4 did not fix the problem, replace the electronic assembly.

For over/under voltage errors (E24, E25):

STEP 1: Unplug/plug the unit. Under and over voltage may be detected with severe in-house power supply fluctuation and stop the motor for protection.

STEP 2: If STEP 1 did not fix the problem, replace the electronic assembly.

For over current, duration, speed feedback, or startup errors (E23, E27, E28, E29):

STEP 1: Unplug/plug the unit.

STEP 2: If STEP 1 did not fix the problem, remove the core and clear the ventilation wheel from any dirt or obstacles.

STEP 3: If STEP 2 did not fix the problem, disconnect J2 (white) and connect a spare blower system. If it works, replace the supply blower.

STEP 4: If STEP 3 did not fix the problem, replace the electronic assembly.

For over temp errors (E26):

STEP 1: Validate if the air exchanger is exposed to ambient temperatures within the operating limits.

STEP 2: If STEP 1 did not fix the problem, replace the electronic assembly.

STEP 1: Unplug the unit. Perform a visual inspection of the exhaust damper system. Clean filters, distribution registers and outside exhaust hood. Make sure no non-return damper is installed in exhaust hood since it can freeze in winter. Inspect ducting to ensure it is not squeezed or bent. Plug the unit in.

STEP 2: If STEP 1 did not fix the problem, remove ducting of the exhaust path. On the LCD screen, select MAX to check if the unit is able to reach the selected flow. If so, review the ducting path.

STEP 3: If STEP 2 did not fix the problem, on the LCD screen, select the MIN and MAX flow setting values then reset the unit. MAX flow value will display on the LCD screen. If MAX flow is above desired MAX flow, set MAX and MIN flows.

STEP 4: If STEP 3 did not fix the problem, replace the exhaust blower and repeat STEP 3.

STEP 5: If STEP 4 did not fix the problem, replace the electronic assembly.

For over/under voltage errors (E34, E35):

STEP 1: Unplug/plug the unit. Under and over voltage may be detected with severe in-house power supply fluctuation and stop the motor for protection.

STEP 2: If STEP 1 did not fix the problem, replace the electronic assembly.

For over current, duration, speed feedback, or startup errors (E33, E37, E38, E39):

STEP 1: Unplug/plug the unit.

STEP 2: If STEP 1 did not fix the problem, remove the core and clear the ventilation wheel from any dirt or obstacles.

STEP 3: If STEP 2 did not fix the problem, disconnect J3 (red) and connect a spare blower system. If it works, replace the exhaust blower.

STEP 4: If STEP 3 did not fix the problem, replace the electronic assembly.

For over temp errors (E36):

STEP 1: Validate if the air exchanger is exposed to ambient temperatures within the operating limits.

STEP 2: If STEP 1 did not fix the problem, replace the electronic assembly.

E40 (Outside air thermistor):

STEP 1: Check if thermistor is well connected in connector J7A.

STEP 2: If not fixed, disconnect connector J7A and check if the measured resistance is within 5 Kohms to 120 Kohms. If outside the range, replace the thermistor.

STEP 3: If not fixed, replace the electronic assembly.

E41 (Distribution air thermistor):

STEP 1: Check if thermistor is well connected in connector J7B.

STEP 2: If not fixed, disconnect connector J7B and check if the measured resistance is within 5 Kohms to 120 Kohms. If outside the range, replace the thermistor.

STEP 3: If not fixed, replace the electronic assembly.

E42 (PCBA thermistor fault):

STEP 1: Replace the electronic assembly.

E43 (PCBA temperature over limit):

STEP 1: Validate if the air exchanger is exposed to ambient temperatures within the operating limits.

STEP 2: If not fixed, replace the electronic assembly.

E50 (Wall control communication lost):

STEP 1: Unplug unit, inspect wires, plug unit in.

STEP 2: If not fixed, remove wall control from the wall installation and test with a short cable. If it works, bring a new cable to the wall installation location.

STEP 3: If not fixed, test the air exchanger with a spare wall control. If it works, replace the wall control.

STEP 4: If not fixed, replace the electronic assembly.

E51 (Wall control sensor):

STEP 1: Unplug unit, inspect wires, plug unit in.

STEP 2: If not fixed, replace the wall control.

This means the unit requires a general inspection. Perform a general inspection of the unit (dampers, core, filters).

STEP 1: Press + or – to access the selection menu.

STEP 2: Complete the configuration.

The unit is currently in protection mode. The power transmitted to the motor is deliberately reduced to decrease electronics temperature. The unit will exit this mode by itself once conditions are back to normal. It is normal to observe a reduction in airflows during this period. This condition should appear only when the unit is set in high speed and located in a warmer environment, for example over 30°C (86°F).