Amana HRV-150 Installing Ducts to / from Inside, Supply AIR Ducting, Direct Connection, From HRV

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INSTALLING DUCTS TO / FROM INSIDE

To maximize airflow in the ductwork system, all ducts should be kept short and have as few bends or elbows as possible. Forty-five degree are preferred to 90º elbows. Use “Y” tees instead of 90º elbows whenever possible.

All duct joints must be fastened with screws or duct sealant and wrapped with a quality duct tape to prevent leakage. Aluminum foil duct tape is recommended. Galvanized ducting from the HRV to the living areas in the house is recommended whenever possible, although flexible duct can be used in moderation when necessary.

SUPPLY AIR DUCTING

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.To avoid possible noise transfer through the ductwork system, a short length (approximately 12”, 300 mm) of nonmetallic flexible insulated duct should be connected between the HRV and the supply/exhaust ductwork system.

The main supply and return lines to/from the HRV must be 6 inches (150 mm) minimum. Branch lines to the individual rooms may be as small as 4 inches (100 mm), but 5 inch (125 mm) lines are preferred.If the floor is the only option available, then special care should be taken in locating grilles. Areas such as under baseboard heaters will help to temper the air. Also optional inline duct heaters are available for mounting in the supply duct work to add heat if required.In homes with a forced air furnace, you may want to connect the HRV to the furnace ductwork (see information below).

PRACTICAL TIPS

•Building Codes and Combustion Appliance Installation Codes do not allow location of return air grilles or any opening such as a “breathing tee” in an enclosed room with spillage susceptible combustion appliances.

•The fresh air inlet from the HRV needs to respect a minimum distance from the furnace return drop to ensure proper air mixing and temperature at the furnace core.

See furnace manufacturer for appropriate specifications.

Direct Connection

•A direct connection requires that the fan of the furnace runs continuously. It may be inter-linked electrically (low voltage) with the HRV (Accessory Control Contacts) for intermittent demand. Should you wish to hard duct the supply air directly into the cold air return of the furnace, remember to check the airflow balance of the HRV with the furnace fan both “on” and “off” to determine that it does not imbalance the HRV more than 10%. Make sure you respect the 1m minimum distance from the supply air in of the HRV and the furnace (Refer to your local and National Building & Heating Codes for any variations in these notes).

For minimum distance See local building codes and practical tips.

from HRV

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Contents Ventilators Table of Contents Optional Controls FeaturesSpecifications Air Quality SensorAirflow DimensionsFan Performance Performance Data TH port for recirculation defrost modelsDmfc Digital Multi-Function ControlHRV-200 Fan PerformanceHRV-150 HRV-300D 91 % Power Volts 120 VAC Amperage Amps Total Phase Single Phase5TH port for recirculation defrost Type models only Modes of Operation Outside. The heat recovery ventiOperation If the user wishes to stop the unit fromOperation Contd Optional Digital ControlOperation Contd Optional Digital Control DmfcMounting InstallationLocation Clothes dryer Range top Stovetop fan Central vacuum systemModel Installing Ducts Going to / from OutsideInstalling the Ducting To the Weatherhoods Direct Connection Installing Ducts to / from InsideSupply AIR Ducting From HRVExhaust Air Ducting Installing Ducts to / from Inside ContdDedicated Installation for Existing Home For new construction, the rigid ducts are run in the wallsInstallation Examples Ducting Fifth Port UnitsInstallation Examples Contd Partially Dedicated SystemBe interlocked with the furnace blower Simplified InstallationOption Return/Return Method Option Supply/Return Method AIR Flow Balancing Pitot Tube Balancing ProcedureAir as so to increase the supply air’s temperature Place pitot tube a minimum of 18 from blower elbowsAIR Flow Balancing Contd Electronic Balancing Motors HRV 150D & 200D onlyTo Install the Clean Core and Filters MaintenanceAny repairs or maintenance Filters need to be checked regularlyTroubleshooting Low Voltage Control Wiring Connections Electrical ConnectionsElectrical Connections Contd Page Page United States Canada
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