H650-Fi & H650-Ri MOUNTING Supplied with base rails. Support rod by others. BLOWERS Quantity: 2 Type: Backward-inclined motorized impeller, direct-drive PSC, variable speed, external rotor FILTERS Number: 4 Type: Aluminum (P/N: 683901) Optional: MERV 8 (P/N: 683902), Carbon (P/N: 683903), or High Efficiency/MERV13 Equivalent (P/N: 683904) ELECTRICAL REQUIREMENTS 120 VAC, 60 Hz, 5.5 A, 660 W FROST CONTROL Cycles controlled by a temperature sensor when outdoor temperatures fall below 23°F (-5°C). * Standard: Exhaust Defrost (H650-Fi) * Optional: Recirculation Defrost (H650-Ri) CONTROLS 24 VAC, 10 VA output for supply and exhaust dampers Low-voltage dry contact (24 VAC, 20 VA) for: * Occupancy Control (start/stop) * Fan Interlock (NO and NC) * Speed Selection * Exhaust/Recirculation (with H650-Ri) Compatible With: * Digital Multifunction Control (P/N: 611242) * Mode Control (exchange or recirculation) (P/N: 611230) * Humidity Control (P/N: 611224) * Speed Control (Low/Intermittent/High) (P/N: 611229) * 20/40/60 Minute Timer (P/N: 611228) WARRANTY Core Assembly: Limited 15-year warranty All Other Covered Components: Limited 2-year warranty APPROVALS Meets Standards: Listed: * UL 1812 and C22.2 no113 The H650 heat recovery ventilator provides high-efficiency heat recovery. The unit uses a robust, water-washable polypropylene core that can withstand a wide range of environmental conditions. The H650 produces approximately 665 CFM at 0.20 in.w.g (ESP). It is powerful enough for restaurants, offices, and other small businesses. The H650 is ideal for cold-weather applications. The H650-Fi shuts down the fan for the outdoor air supply during defrost cycles, while the H650-Ri uses a fifth port with a motorized damper to defrost the core with recirculated warm air from inside the building.