Bard W24G1-A Installation Instructions Manual

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Bard W24G1-A Installation Instructions Manual Manual pdf 19 page image

Manual 2100-525Page 19 of 7312. VENT RESIZING INSTRUCTIONSWhen an existing furnace is removed from a ventingsystem servicing other appliances, the venting system islikely to be too large to properly vent the remainingattached appliances.The following steps shall be followed with each of theappliances remaining connected to the common ventingsystem, placed in operation one at a time while theother appliances remaining connected to the commonventing system are not in operation.1. Seal any unused openings in the venting system.2. Inspect the venting system for proper size andhorizontal pitch, as required in the National Fuel Gascode, ANSI Z223.1 or the CAN/CGA B149Installation Codes and these instructions. Determinethat there is no blockage or restriction, leakage,corrosion and other deficiencies which could causean unsafe condition.3. In so far as is practical, close all building doors andwindows and all doors between the space in whichthe appliance(s) connected to the venting system arelocated and other spaces of the building. Turn onclothes dryers and any appliances not connected tothe venting system. Turn on any exhaust fans, suchas range hoods and bathroom exhausts, so they willoperate at maximum speed. Do not operate asummer exhaust fan. Close fireplace dampers.4. Follow the lighting instructions. Place the appliancebeing inspected in operation. Adjust thermostat soappliance shall operate continuously.5. Test for draft hood equipped appliance spillage at thedraft hood relief opening after 5 minutes of mainburner operation. Use the flame of a match orcandle.6. After it has been determined that each applianceconnected to the venting system properly vents whentested as outlined above, return doors, windows,exhaust fans, fireplace dampers and any other gas-burning appliances to their previous conditions ofuse.7. If improper venting is observed during any of theabove tests, the venting system must be corrected.13. FRESH AIR INTAKEAll units are built with fresh air inlet slots punched inthe service panel.If the unit is equipped with a fresh air damperassembly, the assembly is shipped already attached tothe unit. The damper blade is locked in the closedposition. To allow the damper to operate, themaximum and minimum blade position stops must beinstalled. See Figure 9.All capacity, efficiency and cost of operationinformation as required for Department of Energy“Energyguide” Fact Sheets is based upon the fresh airblank-off plate in place and is recommended formaximum energy efficiency.The blank-off plate is available upon request from thefactory and is installed in place of the fresh air dampershipped with each unit.One of several other ventilation options may beinstalled. Refer to model number and/or supplementalinstallation instructions.14. CONDENSATE DRAINA plastic drain hose extends from the drain pan at thetop of the unit down to the unit base. There areopenings in the unit base for the drain hose to passthrough. In the event the drain hose is connected to adrain system of some type, it must be an open or ventedtype system to assure proper drainage.FIGURE 9FRESH AIR DAMPER