Nu-Air CEA15-R Operating Instructions Manual

Contents

Nu-Air CEA15-R Operating Instructions Manual Manual pdf 5 page image

Rev. December 19, 2008 Page 5 of 192.2.3.1. Simplified System - Continuous Ventilation & Intermittent OperationFor proper supply air distribution with this system, and to prevent short circuiting in the return air duct,the furnace fan must run during ventilation mode. Interlock the furnace and HRV in accordance withSection 3.7.NOTES:1) When selecting an installation option, consideration should be given to the increased electricalconsumption of the furnace fan.2) The HRV fresh air supply duct to the return air plenum shall be connected at a sufficient distanceupstream of the plenum connection to the furnace. This allows proper mixing and ensures appropriateair temperature at the furnace heat exchanger in cold weather. For fuel-fired mid and high efficiencyfurnaces a minimum temperature of 15.5º C (60º F) is recommended at the heat exchanger. (Check thefurnace manufacturer’s specifications).2.2.4 Installation Supplies, Standard Issue ItemsThe HRV comes equipped with: Filters Anti-Vibration Straps Heat Recovery Core Drain Hose Assembly Connections for timers, remote controls, furnace interlock2.2.5. Control Options (sold separately) Windsor mechanical control (WIN-1) Windsor 20 minute timers -up to 6 each system (WIN-20)2.3. Ducting to The OutsideBetween the weather hoods and the HRV you must use fully insulated ducting with an integratedvapour barrier. Insulated ducting with an integrated vapour barrier must also be used on all runspassing through unheated areas. This will avoid condensation problems and energy losses.The minimum RSI value of insulation should equal that of the local building codes.2.3.1. Weather Hood Installation1. Insulated flex duct slides over thegalvanized sleeve of the weather hood.2. Use sheathing tape (red) to join the innerduct to the hood's sleeve.3. Tape the vapour barrier to back of thehood without compressing the insulation.Caulk or foam seal around the collars andhoods to eliminate air and water leaks.4. Locate the hoods for easy access to thebird screen for cleaning purposes.Make the insulated duct that connects the weather