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User manual Amana, model HRV-200D

Manafacture: Amana
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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). from HRV For minimum distance See local building codes and practical tips. INSTALLING DUCTS TO / FROM INSIDE (CONT'D) Exhaust Air Ducting 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 (i.e. greenhouse, atrium, swimming pool, sauna, etc.) may be installed. The furnace return duct may be also used to exhaust from. In this method, the exhaust air is not ducted back from bathrooms, kitchens, etc to the HRV with “dedicated lines”. This method has become popular and provides good ventilation when installed in accordance with the instructions. The furnace blower must be running when the HRV is operating for this method to be effective. PRACTICAL TIPS • For new construction, the rigid ducts are run in the walls. • Choose the location for your Supply and Exhaust grilles. The Supply grilles should be located in every habitable room and the Exhaust Grilles should be located in the wet rooms. • A piece of flexible ducting should be placed between the Supply Air In and Out collar of the HRV and the rigid ducting to absorb any noise or vibrations. • For proper network of ducting, see TYPES OF INSTALLATIONS. • The grilles are to be installed on the ceiling or on the wall 6” (152 mm) to 12” (305 mm) from the ceiling. Dedicated Installation for Existing Home - (non forced air heating / cooling system) 1 Begin with the duct collar marked “Exhaust Air In”. Slide a short piece (12”) of flexible duct over the duct collar. Using duct tape, tape the flexible duct to the collar. Run the flexible ducting to the main rigid duct trunk line, which connects to the remainder of the ducts going to and from rooms in the house. Repeat the steps for the “Supply Air Out” on the side of the HRV. 2 Working from a closet, attic or inside your joist wall, run the length of ducting required for the proper grille location and cut a hole in the drywall. Fasten the mounting collar (optional) to the ducting and fasten the collar to the wall or ceiling with screws. 3 The grille airflow can be adjusted by rotating the inside unit. It is recommended that the grilles be completely opened at first and then adjusted later as needed. 4 Push the grille into the optional mounting collar or directly into installed elbow. INSTALLATION EXAMPLES It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended. All air movement devices have a performance curve. The amount of air (CFM) that an HRV/ERV will deliver is directly related to the total external static pressure (E.S.P.) of the system. Static pressure is a measure of resistance imposed on the blower by length of duct work/number of fittings used in duct work, duct heater etc. Ducting Fifth Port Units All HRV(D)’s have a fifth duct port on top of the unit. This duct port is for both defrost and the recirculation mode. A motorized damper installed in the port closes during defrost or recirculation temporarily blocking the incoming fresh air-stream, allowing the warm air from the house to circulate through the HRV. You may wish to duct this port to...